CN107162133A - A kind of oil gas field sewage functionalization chitin composite flocculant and preparation method thereof - Google Patents
A kind of oil gas field sewage functionalization chitin composite flocculant and preparation method thereof Download PDFInfo
- Publication number
- CN107162133A CN107162133A CN201710385283.XA CN201710385283A CN107162133A CN 107162133 A CN107162133 A CN 107162133A CN 201710385283 A CN201710385283 A CN 201710385283A CN 107162133 A CN107162133 A CN 107162133A
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- China
- Prior art keywords
- chitosan
- acid
- functionalization
- oil gas
- gas field
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- 239000010865 sewage Substances 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 238000007306 functionalization reaction Methods 0.000 title claims abstract description 42
- 229920002101 Chitin Polymers 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 61
- 238000003756 stirring Methods 0.000 claims abstract description 46
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002734 clay mineral Substances 0.000 claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 239000008394 flocculating agent Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 13
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000077 silane Inorganic materials 0.000 claims abstract description 12
- 238000005189 flocculation Methods 0.000 claims abstract description 11
- 230000016615 flocculation Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 46
- 229920001661 Chitosan Polymers 0.000 claims description 43
- 239000000725 suspension Substances 0.000 claims description 38
- 239000002253 acid Substances 0.000 claims description 37
- 150000003839 salts Chemical class 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 28
- 235000002639 sodium chloride Nutrition 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 14
- 238000012986 modification Methods 0.000 claims description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 159000000000 sodium salts Chemical class 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 7
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 239000004021 humic acid Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 150000007522 mineralic acids Chemical class 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- 229960000583 acetic acid Drugs 0.000 claims description 4
- 239000012362 glacial acetic acid Substances 0.000 claims description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- 239000012134 supernatant fraction Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 3
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 239000002262 Schiff base Substances 0.000 claims description 2
- 150000004753 Schiff bases Chemical class 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 2
- 230000010933 acylation Effects 0.000 claims description 2
- 238000005917 acylation reaction Methods 0.000 claims description 2
- 230000029936 alkylation Effects 0.000 claims description 2
- 238000005804 alkylation reaction Methods 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 238000004132 cross linking Methods 0.000 claims description 2
- 230000032050 esterification Effects 0.000 claims description 2
- 238000005886 esterification reaction Methods 0.000 claims description 2
- 238000006266 etherification reaction Methods 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 2
- 235000011008 sodium phosphates Nutrition 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 230000001988 toxicity Effects 0.000 claims description 2
- 231100000419 toxicity Toxicity 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 239000005909 Kieselgur Substances 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- 230000000694 effects Effects 0.000 description 17
- 125000002091 cationic group Chemical group 0.000 description 7
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010129 solution processing Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 229960004029 silicic acid Drugs 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 208000024827 Alzheimer disease Diseases 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229940123973 Oxygen scavenger Drugs 0.000 description 1
- 206010039966 Senile dementia Diseases 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Landscapes
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of oil gas field sewage functionalization chitin composite flocculant, it is composited by the natural clay mineral of no biotoxicity, iron-based flocculating agent, silane coupler and Chitosan-phospholipid complex；The invention also discloses its preparation method in addition.This method includes the steps such as ultrasonic disperse, Purification by filtration, temperature control stirring, silane coupled, drying and grinding.The present invention can not only effectively improve oil gas field sewage flocculation settling property using the characteristic of natural clay mineral, inorganic flocculating agent and Chitosan-phospholipid complex, the heavy metal ion and decomposed oils and other organic pollutions in oil gas field sewage can be trapped simultaneously, the preparation technology of the flocculant is simple to operate, it is easy to promote.
Description
Technical field
The present invention relates to the preparation field of environmentally friendly pollution treatment medicament, more particularly to a kind of oil gas field sewage functionalization chitosan
Composite flocculation agent, further relates to its preparation method.
Background technology
The average aggregate moisture content of current China oil gas field production fluid causes substantial amounts of oil-polluted water to produce more than 80%
It is raw.Oil gas field sewage composition is complicated, except containing solubility salt, high salinity, high chloride ion content, high COD, heavy metal,
Outside the natural impuritys such as oil emulsion, the solid particle of suspension, also containing the chemical addition agent that some are used for changing extraction aqueous nature, with
And the acids on injection stratum, oxygen scavenger, lubricant, bactericide, scale preventative etc..In recent years, with polymer displacement of reservoir oil etc. three times
Promoting the use for oil recovery technique, also contains the chemical substances such as polymer, surfactant in production fluid.If its re-injection is easy
Cause formation blockage, accelerate pipeline corrosion, outer row can then cause environmental pollution, thus have to pass through strict processing could re-injection or
Discharge.
In sewage disposal, coagulation technology is generally used at present, and flocculant is key component therein.Conventional poly- third
Acrylamide flocculant not yet obtains clear and definite conclusion to the potential danger of the biological and mankind, and AlSnSi alloy has potential to human body
Toxicity, easily causes senile dementia.Secondary pollution is likely to result in because it is remained in water, its application is received certain journey
The limitation of degree.To seek the flocculant of nontoxic, efficient reduction process cost, using Chitosan-phospholipid complex as stock, addition
Blending constituent after the natural clay mineral of iron-based flocculating agent compounding no biotoxicity, makes new function chitosan and is combined
Flocculant.
The charge neutrality ability of Chitosan-phospholipid complex is poor, is influenceed greatly by pH.Chitosan-phospholipid complex is used as one kind
Contain substantial amounts of amino (- NH2) and hydroxyl (- OH) in cationic flocculant, its molecular structure, this kind of micel contains orphan
To electronics, stable chelate can be formed with metal ion.Introducing the iron-based flocculating agent with compared with forceful electric power lotus neutralising capacity
And after clay flocculation aid, the strand of Chitosan-phospholipid complex is built bridge between steady particulate matter has been taken off, and is conducive to larger
The formation of flco, the effect of sweeping of the volume through flco enhances the function of removing tiny particle in water.The effect of composite flocculation agent is significantly
Better than the effect that chitosan class flocculant is used alone and the effect of inorganic flocculating agent is used alone, with good turbidity removal and removes
The features such as oily effect, dosage are low, pH value is applied widely, flco forms fast.
The content of the invention
In view of this, an object of the present invention is to provide a kind of oil gas field sewage functionalization chitosan composite flocculation
Agent, can effectively improve oil gas field sewage flocculation settling property, while the heavy metal ion in oil gas field sewage can be trapped, and portion
Decompose oils and other organic pollutions；The second object of the present invention is to provide this kind of functionalization chitin composite flocculant
Preparation method, the preparation technology is by the way that the natural clay mineral of no biotoxicity, iron-based flocculating agent, silane coupler and shell are gathered
Carbohydrates and their derivative is reacted, and can successfully synthesize this kind of functionalization chitin composite flocculant, and combined coefficient is high, technique
It is simple to operate, it is easy to promote.
An object of the present invention is achieved through the following technical solutions：.
This kind of oil gas field sewage functionalization chitin composite flocculant, by the natural clay mineral of no biotoxicity, iron
Based flocculating agent, silane coupler and Chitosan-phospholipid complex are prepared from.
Further, the natural clay mineral of the no biotoxicity is volcanic ash, perlite, medical stone, vermiculite, kaolinite
Soil, montmorillonite, bentonite, diatomite, city turfy soil, meadow soil and, one or more mixing compositions in red soil.
Further, the iron-based flocculating agent be mainly humic acid iron, polyferric silicate sulfate, bodied ferric sulfate, poly-ferric chloride,
One or more mixing compositions in iron chloride, ferric sulfate, ferrous sulfate, frerrous chloride.
Further, the Chitosan-phospholipid complex be mainly thiolated modified chitosan, chitosan, acylation modification shell gather
It is sugar, carboxylated modification of chitosan, etherification modified chitosan, alkylation modification chitosan, esterification modification chitosan, quaternised modified
One or more in chitosan, hydrolyzed modified chitosan, schiff base reaction modification of chitosan, graft crosslinking modification of chitosan
Mixing composition.
The second object of the present invention is achieved through the following technical solutions：
This kind of oil gas field sewage preparation method of functionalization chitin composite flocculant, comprises the following steps：
Step 1:The natural clay mineral of no biotoxicity is pre-processed, is air-dried first, is removed impurity, crush, grind
Grinding rate to after 0.05 micron~150 microns, be made again 1%~20% water slurry suspension；
Step 2：The sodium salt for accounting for natural clay mineral solid part quality 0~10%, Ran Hou are added into water slurry suspension
Stirred 30~180 minutes at 20 DEG C~60 DEG C of temperature, stir speed (S.S.) is 60~300rmin-1, and coordinate 40~100Hz ultrasounds
Ripple ultrasonic disperse, prepares modified suspension；
Step 3：Into modified suspension plus inorganic acid solution that mass ratio is 10~50% concentration, regulation pH 1~4 it
Between, with 150~1000rmin-1Stir speed (S.S.) under high-speed stirred 30~180 minutes, and heated at temperature 45 C~85 DEG C
It is fully reacted within 1~24 hour, filter to take supernatant fraction, generate polysilics acid metal salt class solution；
Step 4：The aqueous solution by mass ratio for the iron-based flocculating agent of 1%~50% concentration is added to polysilics acid metal salt class
Mixed in solution, polysilics acid metal salt class solution is 1 with nanometer iron-series flocculant aqueous solution mass ratio:1~20, in 20 DEG C of temperature
High-speed stirred 30~180 minutes at~60 DEG C, stir speed (S.S.) is 150~1000rmin-1, added while stirring into mixed liquor
The silane coupler of natural clay mineral solid part quality 1~20% is accounted for, static curing 2~24 hours generates liquid polysilicon acid
Metallic salt flocculant；
Step 5：Chitosan-phospholipid complex is added to mass ratio in the acid of 1%~5% concentration, to heat 40~60
DEG C, with 60~300rmin-1Stir speed (S.S.) stir 2~24 hours, it is fully reacted, until Chitosan-phospholipid complex
Dissolving, is finally made into 1g/L Chitosan-phospholipid complex solution；
Step 6：By step 5) obtained Chitosan-phospholipid complex solution and step 4) obtained liquid polysilicon acid metal
Saline flocculating agent is 1 according to mass ratio:1~20 ratio is well mixed, 20 DEG C~60 DEG C of temperature and stir speed (S.S.) 60~
300r·min-1Lower stirring is sufficiently mixed it in 0.5~24 hour, is made into functionalization chitin composite flocculant liquid；
Step 7：By functionalization chitin composite flocculant liquid in the drying baker of 25 DEG C~105 DEG C of temperature continuous drying
5~24 hours, solid sample is ground after taking-up, fineness of grind obtains finished product to after 0.05 micron~150 microns.
Further, the step 2) in, sodium salt is sodium metasilicate, sodium polyphosphate, sodium phosphate, sodium chloride, sodium sulphate, chlorination
One or more mixing compositions in sodium, sodium nitrate, sodium hypochlorite, sodium carbonate, sodium thiosulfate, sodium peroxydisulfate.
Further, the step 3) in, the inorganic acid that the inorganic acid solution is used be sulfuric acid, hydrochloric acid, nitric acid, boric acid,
One or more mixing compositions in silicic acid, phosphoric acid.
Further, the step 5) in, the acid that Chitosan-phospholipid complex is added in the acid of 1%~5% concentration is
One or more mixing compositions in glacial acetic acid, formic acid, citric acid, hydrochloric acid, nitric acid.
The beneficial effects of the invention are as follows：
The preparation technology of the present invention is by by the natural clay mineral of no biotoxicity, iron-based flocculating agent, silane coupler
Reacted with Chitosan-phospholipid complex, successfully synthesize a kind of oil gas field sewage functionalization chitin composite flocculant,
In technique combined coefficient is improved using ultrasonic disperse and silane coupling strategies, simple to operate and efficiency high, whole set process is nontoxic,
Environmental protection.The flocculant of synthesis can not only effectively improve oil gas field sewage flocculation settling property, and can trap oil gas field sewage
In heavy metal ion, high activity oxide can be also produced under illumination condition and then oils and other organic pollutions are decomposed,
Oil gas field sewage disposal integrated cost can be reduced.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can be wanted by following specification and right
Book is sought to realize and obtain.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is preparation method schematic flow sheet of the invention；
Fig. 2 is decomposition oils and the reaction principle figure of other organic pollutions.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.It should be appreciated that preferred embodiment
Only for the explanation present invention, the protection domain being not intended to be limiting of the invention.
Embodiment one
As shown in figure 1, the preparation method of the present embodiment comprises the following steps：
Step 1：Wudalianchi Volcanic ash is pre-processed, air-dries first, remove impurity, crushing, fineness of grind to 0.1
Micron after, be made again 10% water slurry suspension；
Step 2：The sodium metasilicate for accounting for volcanic ash solid part quality 1% is added into water slurry suspension, then in 25 DEG C of temperature
Lower stirring 60 minutes, stir speed (S.S.) is 80rmin-1, and coordinate 60Hz ultrasonic echographies to disperse, prepare sodium and be modified suspension；
Step 3：Mass ratio is added to adjust pH 2 for the sulfuric acid solution of 20% concentration into modified suspension, in stir speed (S.S.)
For 1000rmin-1Lower high-speed stirred 45 minutes, and heating makes it fully react in 2 hours under temperature 60 C, filters to take clear liquid
Part, generates polysilics acid metal salt class solution；
Step 4：The aqueous solution by mass ratio for the humic acid iron of 20% concentration is added in polysilics acid metal salt class solution
Mixing, polysilics acid metal salt class solution is 1 with humic acid ferric flocculant aqueous solution mass ratio:5, the high-speed stirred at 25 DEG C of temperature
60 minutes, stir speed (S.S.) was 1000rmin-1, the silicon for accounting for volcanic ash solid part quality 1% is added into mixed liquor while stirring
Alkane coupling agent, static curing 12 hours generates liquid polysilics acid metal salt class flocculant；
Step 5：Hydrolyzed modified chitosan is added in the glacial acetic acid that mass ratio is 1% concentration, heats 50 DEG C, in stirring
Speed is stirred 5 hours fully to be reacted under 80rmin-1, until the dissolving of hydrolyzed modified chitosan, is finally made into 1g/L mercapto
Base modification of chitosan solution；
Step 6：Hydrolyzed modified chitosan solution is mixed according to a certain percentage with liquid polysilics acid metal salt class flocculant
Uniformly, mass ratio is 1 when mixing is added:1, it is 100rmin in 25 DEG C of temperature and stir speed (S.S.)-1Lower stirring fills it in 5 hours
Divide mixing, be made into functionalization chitin composite flocculant liquid.
Step 7：By liquid functional chitin composite flocculant in the drying baker of 65 DEG C of temperature continuous drying 12 hours,
Solid sample is ground after taking-up, fineness of grind completes oil gas field sewage functionalization chitosan composite flocculation to after 0.1 micron
The preparation of agent.
Embodiment two
The preparation method of the present embodiment comprises the following steps：
Step 1：By volcanic ash and two kinds of clay minerals of montmorillonite according to mass ratio 1:1 mixing, is then pre-processed, first
First air-dry, remove impurity, crushing, fineness of grind to after 0.05 micron, be made again 15% water slurry suspension；
Step 2：The sodium polyphosphate for accounting for mixing clay mineral solid part quality 5% is added into water slurry suspension, then
Stirred 180 minutes at 30 DEG C of temperature, stir speed (S.S.) is 120rmin-1, and coordinate 40Hz ultrasonic echographies to disperse, preparation changes
Property suspension；
Step 3：Mass ratio is added to adjust pH 1.5 for the hydrochloric acid solution of 10% concentration into modified suspension, in stirring speed
Rate is high-speed stirred under 300rmin-1, and heating makes it fully react in 10 hours under temperature 50 C, filters to take clear liquid portion
Point, generate polysilics acid metal salt class solution；
Step 4：The aqueous solution by mass ratio for the polymeric silicicacid ferric flocculant of 30% concentration is added to polysilics acid metal salt
Mixed in class solution, polysilics acid metal salt class solution is 1 with polyferric silicate sulfate flocculant aqueous solution mass ratio:20, in temperature 30
High-speed stirred 180 minutes at DEG C, stir speed (S.S.) is 300rmin-1, is added into mixed liquor account for mixing clay ore deposit while stirring
The silane coupler of thing solid part quality 1.5%, static curing 24 hours generates liquid polysilics acid metal salt class flocculant；
Step 5：Carboxy-modified chitosan is added in the hydrochloric acid that mass ratio is 1% concentration, heats 50 DEG C, in stirring speed
Rate is is sufficiently stirred for 10 hours under 120rmin-1, until Chitosan-phospholipid complex dissolving, the sulfydryl for being finally made into 1g/L changes
Property chitosan solution.
Step 6：According to mass ratio it is 1 by carboxy-modified chitosan solution and liquid polysilics acid metal salt class flocculant:5 mix
Close uniform, stirring is sufficiently mixed it in 10 hours in the case where temperature 60 C and stir speed (S.S.) are 120rmin-1, is made into functional shell
Glycan composite flocculation agent liquid.
Step 7：By liquid functional chitin composite flocculant in the drying baker of 85 DEG C of temperature continuous drying 10 hours,
Solid sample is ground after taking-up, fineness of grind is to after 0.05 micron, completing the oil gas field sewage compound wadding of functionalization chitosan
The preparation of solidifying agent.
Embodiment three
The preparation method of the present embodiment comprises the following steps：
Step 1：By perlite and two kinds of clay minerals of kaolin according to mass ratio 2:1 is uniformly mixed, then to mixed
Compound is pre-processed, air-dry first, remove impurity, crushing, fineness of grind to after 1 micron, be made again 20% water slurry it is suspended
Liquid；
Step 2：The sodium thiosulfate for accounting for mixing clay mineral solid part quality 10% is added into water slurry suspension, then
Stirred 30 minutes under temperature 60 C, stir speed (S.S.) is 300rmin-1, and coordinate 100Hz ultrasonic echographies to disperse, preparation changes
Property suspension；
Step 3：Mass ratio is added to adjust pH 2.5 for the silicate solution of 15% concentration into modified suspension, in stirring speed
Rate is high-speed stirred under 400rmin-1, and heating makes it fully react in 8 hours under temperature 45 C, filters to take supernatant fraction,
Generate polysilics acid metal salt class solution；
Step 4：The aqueous solution by mass ratio for the poly-ferric chloride of 1% concentration is added in polysilics acid metal salt class solution
Mixing, both liquid quality ratios are 1:10, high-speed stirred 120 minutes under temperature 50 C, stir speed (S.S.) is 400rmin-1,
The silane coupler for accounting for mixing clay mineral solid part quality 2.5% is added into mixed liquor while stirring, static curing 5 is small
When, generate liquid polysilics acid metal salt class flocculant；
Step 5：Sulfhydryl modified chitosan is added in the nitric acid that mass ratio is 2% concentration, heats 45 DEG C, in stirring speed
Rate is fully reacts under 60rmin-1, until the dissolving of hydrolyzed modified chitosan, is finally made into 1g/L hydrolyzed modified chitosan
Solution.
Step 6：Sulfhydryl modified chitosan solution is mixed according to a certain percentage with liquid polysilics acid metal salt class flocculant
Uniformly, mass ratio is 1 when mixing is added:10, in the case where temperature 60 C and stir speed (S.S.) are 60rmin-1, stirring makes it in 24 hours
It is sufficiently mixed, is made into functionalization chitin composite flocculant liquid.
Step 7：By liquid functional chitin composite flocculant, continuous drying 12 is small in the drying baker of 105 DEG C of temperature
When, solid sample is ground after taking-up, fineness of grind is to after 1 micron, completing the oil gas field sewage compound wadding of functionalization chitosan
The preparation of solidifying agent.
Example IV
The preparation method of the present embodiment comprises the following steps：
Step 1：Wudalianchi Volcanic ash is pre-processed, air-dries first, remove impurity, crushing, fineness of grind to 0.1
Micron after, be made again 10% water slurry suspension；
Step 2：The sodium salt for accounting for the grey solid part quality 0% of Wudalianchi Volcanic is added into water slurry suspension (without sodium
Salt is modified), then stirred 60 minutes at 25 DEG C of temperature, stir speed (S.S.) is 80rmin-1, and coordinate 60Hz ultrasonic echographies point
Dissipate, prepare suspension；
Step 3：To step 2) in the suspension for preparing plus mass ratio for 20% concentration sulfuric acid solution regulation pH 2,
Stir speed (S.S.) is 1000rmin-1Lower high-speed stirred 45 minutes, and heating makes it fully react in 2 hours under temperature 60 C, mistake
Leaching supernatant fraction, generates polysilics acid metal salt class solution；
Step 4：The aqueous solution by mass ratio for the humic acid iron of 20% concentration is added in polysilics acid metal salt class solution
Mixing, polysilics acid metal salt class solution is 1 with humic acid ferric flocculant aqueous solution mass ratio:5, the high-speed stirred at 25 DEG C of temperature
60 minutes, stir speed (S.S.) was 1000rmin-1, added into mixed liquor account for the grey solid part quality of Wudalianchi Volcanic while stirring
1% silane coupler, static curing 12 hours generates liquid polysilics acid metal salt class flocculant；
Step 5：Hydrolyzed modified chitosan is added in the glacial acetic acid that mass ratio is 1% concentration, heats 50 DEG C, in stirring
Speed is stirred 5 hours fully to be reacted under 80rmin-1, until the dissolving of hydrolyzed modified chitosan, is finally made into 1g/L mercapto
Base modification of chitosan solution；
Step 6：Hydrolyzed modified chitosan solution is mixed according to a certain percentage with liquid polysilics acid metal salt class flocculant
Uniformly, mass ratio is 1 when mixing is added:1, it is 100rmin in 25 DEG C of temperature and stir speed (S.S.)-1Lower stirring fills it in 5 hours
Divide mixing, be made into functionalization chitin composite flocculant liquid.
Step 7：By liquid functional chitin composite flocculant in the drying baker of 65 DEG C of temperature continuous drying 12 hours,
Solid sample is ground after taking-up, fineness of grind completes oil gas field sewage functionalization chitosan composite flocculation to after 0.1 micron
The preparation of agent.
Concrete application is illustrated：
Application examples one：The oil gas field sewage functionalization chitin composite flocculant that embodiment one is prepared is used for new
Boundary disposing polluted water in oil, water sampling 1L, before processing suspension content is 264mg/L, uses the oil that 1ml mass concentrations are 10%
Gas field sewage is handled after sewage with functionalization chitin composite flocculant, and suspension content is 8.3mg/L in sewage, and processing suspends
Thing effect is obvious.The cationic PAM solution processing that the PAC solution+1ml mass concentrations for the use of 1ml mass concentrations being 10% are 2 ‰
Suspension content is 89mg/L in sewage afterwards, because oil-containing is not removal effect is good in sample.
Application examples two：The oil gas field sewage functionalization chitin composite flocculant that embodiment two is prepared is used for Shan
The western mercurous oil gas field sewage disposal in certain oil field, water sampling 1L, before processing suspension content 317mg/L, total mercury content 1533ppb.
Handled after sewage, hanged in sewage for 10% oil gas field sewage functionalization chitin composite flocculant using 1ml mass concentrations
Float content is 9.7mg/L, total mercury concentration 163ppb, and processing suspension and total mercury effect are obvious.It is using 1ml mass concentrations
Suspension content is 57mg/L in sewage after the cationic PAM solution processing that 10% PAC solution+1ml mass concentrations are 2 ‰,
Total mercury concentration 1048ppb, because oil-containing is go the effect of oil removal and total mercury not good in sample.
Application examples three：The oil gas field sewage functionalization chitin composite flocculant that embodiment three is obtained is used for Sichuan area
Domain shale gas collection base anti-waste discharge water process containing heavy metal, water sampling 1L, before processing suspension content 572mg/L, magnesium from
Sub- concentration 964ppb, oil-containing 318mg/L.It is combined using 1ml mass concentrations for 10% oil gas field sewage functionalization chitosan
After flocculant process sewage, suspension content is 23mg/L, magnesium ion concentration 395ppb, oil-containing 84mg/L, after processing in sewage
It was found that having obvious removal effect to suspension, magnesium ion and oil content.Using 1ml mass concentrations for 10% PAC solution+
Suspension content is 237mg/L, magnesium ion concentration in sewage after the cationic PAM solution processing that 1ml mass concentrations are 2 ‰
751ppb, oil-containing 178mg/L, it is found that treatment effect is not obvious.
Application examples four：The oil gas field sewage nano functionalization chitin composite flocculant that embodiment three is obtained is used to contain
The processing of mercury oil gas field sewage demercuration, takes the mercurous oil gas field Wastewater Samples of 6 groups of 500ml, and it is 10% that 1ml mass concentrations are added respectively
The sun that the SPFS+1ml mass concentrations that cationic PAM that PAC+1ml mass concentrations are 2 ‰, 1ml mass concentrations are 10% are 2 ‰
The heavy metal that functionalization chitin composite flocculant that ion PAM, 1ml mass concentration is 10%, 1ml mass concentrations are 10% is caught
Catch agent, the cationic PAM that the heavy metal chelating agent+1mlSPFS+1ml mass concentrations that 1ml mass concentrations are 10% are 2 ‰, 1ml
The functionalization chitin composite flocculant that the heavy metal chelating agent+1ml mass concentrations that mass concentration is 10% are 10%, is obtained
Each flocculant is as shown in the table to mercury ion treatment effect comparing result：
Table 1
Application examples five：Example IV is prepared oil gas field sewage functionalization chitin composite flocculant (without
Cross sodium salt modification) it is used for Xinjiang disposing polluted water in oil, water sampling 1L, before processing suspension content is 264mg/L, uses 1ml
Mass concentration is handled after sewage for 10% oil gas field sewage with functionalization chitin composite flocculant (being modified without sodium salt),
Suspension content is 24mg/L in sewage, although processing suspension effect is also obvious, but be not as bright as the effect being modified by sodium salt
Aobvious (the oil gas field sewage functionalization chitin composite flocculant that such as embodiment one is prepared).Use 1ml mass concentrations
For 10% PAC solution+1ml mass concentrations be 2 ‰ the processing of cationic PAM solution after in sewage suspension content be 89mg/
L, because oil-containing is not removal effect is good in sample.
The functionalization chitin composite flocculant of the present invention coordinates heavy metal to catch it can be seen from above-mentioned application examples and table 1
Catch agent to use, have splendid seizure effect for the heavy metal ion in oil gas field sewage, it should be pointed out that work(of the invention
Chitin composite flocculant can be changed can also decomposed oils and other organic pollutions, decomposition efficiency height, without poisonous and harmful residual
Stay, decomposition reaction principle is as shown in Figure 2.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (8)
1. a kind of oil gas field sewage functionalization chitin composite flocculant, it is characterised in that：The composite flocculation agent is by without life
Natural clay mineral, iron-based flocculating agent, silane coupler and the Chitosan-phospholipid complex of thing toxicity are prepared from.
2. a kind of oil gas field sewage functionalization chitin composite flocculant according to claim 1, it is characterised in that：Institute
The natural clay mineral for stating no biotoxicity is volcanic ash, perlite, medical stone, vermiculite, kaolin, montmorillonite, bentonite, silicon
One or more mixing compositions in diatomaceous earth, city turfy soil, meadow soil, red soil.
3. a kind of oil gas field sewage functionalization chitin composite flocculant according to claim 1, it is characterised in that：Institute
It is mainly humic acid iron, polyferric silicate sulfate, bodied ferric sulfate, poly-ferric chloride, iron chloride, ferric sulfate, sulphur to state iron-based flocculating agent
One or more mixing compositions in sour ferrous, frerrous chloride.
4. a kind of oil gas field sewage functionalization chitin composite flocculant according to claim 1, it is characterised in that：Institute
State Chitosan-phospholipid complex be mainly thiolated modified chitosan, chitosan, acylation modification chitosan, carboxylated be modified shell gather
Sugared, etherification modified chitosan, alkylation modification chitosan, esterification modification chitosan, quaternised modified chitosan, hydrolyzed modified shell
One or more mixing compositions in glycan, schiff base reaction modification of chitosan, graft crosslinking modification of chitosan.
5. according to a kind of preparation of any described oil gas field sewage functionalization chitin composite flocculant of Claims 1-4
Method, it is characterised in that：Comprise the following steps：
Step 1:The natural clay mineral of no biotoxicity is pre-processed, air-dries first, remove impurity, crushing, grinding carefully
Spend to after 0.05 micron~150 microns, be made again 1%~20% water slurry suspension；
Step 2：The sodium salt for accounting for natural clay mineral solid part quality 0~10% is added into water slurry suspension, then in temperature
Stirred 30~180 minutes at 20 DEG C~60 DEG C, stir speed (S.S.) is 60~300rmin-1, and coordinate 40~100Hz ultrasonic waves to surpass
Sound disperses, and prepares modified suspension；
Step 3：Add the inorganic acid solution that mass ratio is 10~50% concentration into modified suspension, pH is between 1~4 for regulation,
With 150~1000rmin-1Stir speed (S.S.) under high-speed stirred 30~180 minutes, and at temperature 45 C~85 DEG C heating 1~
It is fully reacted within 24 hours, filter to take supernatant fraction, generate polysilics acid metal salt class solution；
Step 4：The aqueous solution by mass ratio for the iron-based flocculating agent of 1%~50% concentration is added to polysilics acid metal salt class solution
Middle mixing, polysilics acid metal salt class solution is 1 with iron-based flocculating agent aqueous solution mass ratio:1~20, at 20 DEG C~60 DEG C of temperature
High-speed stirred 30~180 minutes, stir speed (S.S.) is 150~1000rmin-1, added into mixed liquor account for natural glutinous while stirring
The silane coupler of native mineral solids part quality 1~20%, static curing 2~24 hours generates liquid polysilics acid metal salt class
Flocculant；
Step 5：Chitosan-phospholipid complex is added to mass ratio in the acid of 1%~5% concentration, to heat 40~60 DEG C, with
60~300rmin-1Stir speed (S.S.) stir 2~24 hours, it is fully reacted, until Chitosan-phospholipid complex dissolving,
The final Chitosan-phospholipid complex solution for being made into 1g/L；
Step 6：By step 5) obtained Chitosan-phospholipid complex solution and step 4) obtained liquid polysilics acid metal salt class
Flocculant is 1 according to mass ratio:1~20 ratio is well mixed, in 20 DEG C~60 DEG C of temperature and 60~300r of stir speed (S.S.)
min-1Lower stirring is sufficiently mixed it in 0.5~24 hour, is made into functionalization chitin composite flocculant liquid；
Step 7：By functionalization chitin composite flocculant liquid in the drying baker of 25 DEG C~105 DEG C of temperature continuous drying 5~
24 hours, solid sample is ground after taking-up, fineness of grind obtains finished product to after 0.05 micron~150 microns.
6. a kind of preparation method of oil gas field sewage functionalization chitin composite flocculant according to claim 5, its
It is characterised by：The step 2) in, sodium salt is sodium metasilicate, sodium polyphosphate, sodium phosphate, sodium chloride, sodium sulphate, sodium chloride, nitre
One or more mixing compositions in sour sodium, sodium hypochlorite, sodium carbonate, sodium thiosulfate, sodium peroxydisulfate.
7. a kind of preparation method of oil gas field sewage functionalization chitin composite flocculant according to claim 5, its
It is characterised by：The step 3) in, the inorganic acid that the inorganic acid solution is used is sulfuric acid, hydrochloric acid, nitric acid, boric acid, silicic acid, phosphorus
One or more mixing compositions in acid.
8. a kind of preparation method of oil gas field sewage functionalization chitin composite flocculant according to claim 5, its
It is characterised by：The step 5) in, by Chitosan-phospholipid complex be added to 1%~5% concentration acid in acid for glacial acetic acid,
One or more mixing compositions in formic acid, citric acid, hydrochloric acid, nitric acid.
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| CN112321657A (en) * | 2020-11-26 | 2021-02-05 | 蚌埠市华东生物科技有限公司 | A kind of extraction method of stevioside |
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| CN113000029B (en) * | 2021-03-01 | 2022-11-25 | 贵州美瑞特环保科技有限公司 | Preparation method of bio-based adsorption filtration fiber membrane for removing and recovering mercury in oil and gas field sewage |
| CN113096847A (en) * | 2021-03-31 | 2021-07-09 | 国网山东省电力公司电力科学研究院 | Conductive particles, and equipment and process for treating discharged wastewater of direct current converter station by using conductive particles |
| CN114684903A (en) * | 2022-04-08 | 2022-07-01 | 湖南诚通天岳环保科技有限公司 | Preparation method of inorganic-organic enhanced phosphorus removal flocculating agent and wastewater treatment method |
| CN114684903B (en) * | 2022-04-08 | 2023-09-19 | 湖南诚通天岳环保科技有限公司 | Preparation method of inorganic-organic reinforced dephosphorization flocculant and wastewater treatment method |
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