CN106365365A - Method of treating manganese ore waste water - Google Patents

Method of treating manganese ore waste water Download PDF

Info

Publication number
CN106365365A
CN106365365A CN201610729983.1A CN201610729983A CN106365365A CN 106365365 A CN106365365 A CN 106365365A CN 201610729983 A CN201610729983 A CN 201610729983A CN 106365365 A CN106365365 A CN 106365365A
Authority
CN
China
Prior art keywords
waste water
manganese ore
ore waste
char
irradiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610729983.1A
Other languages
Chinese (zh)
Other versions
CN106365365B (en
Inventor
肖军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Tongren Hecheng Manganese Alloy Co.,Ltd.
Original Assignee
Guizhou Wanshan Xinglong Manganese Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guizhou Wanshan Xinglong Manganese Industry Co Ltd filed Critical Guizhou Wanshan Xinglong Manganese Industry Co Ltd
Priority to CN201610729983.1A priority Critical patent/CN106365365B/en
Publication of CN106365365A publication Critical patent/CN106365365A/en
Application granted granted Critical
Publication of CN106365365B publication Critical patent/CN106365365B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/288Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • C02F2101/206Manganese or manganese compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Water Treatment By Sorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention discloses a method of treating manganese ore waste water. The method includes the steps of: adsorption, irradiation, secondary adsorption, and coagulation and emission. In the method, a secondary adsorption method is employed, wherein a large amount of harmful substances in the manganese ore waste water are adsorbed; the waste water is further disinfected by means of ultraviolet treatment. A self-made carbonized material employed in the invention has very strong adsorption and purification effects. The method is simple and has significant effects. Finally, a high-effective coagulator is employed and has compensation effects with the carbonized material, thereby improving efficiency.

Description

A kind of method processing manganese ore waste water
Technical field
The present invention relates to technical field of waste water processing is and in particular to a kind of method of process manganese ore waste water.
Background technology
The exploitation of manganese ore can produce substantial amounts of manganese ore waste water, and manganese ore waste water can reduce drain pipe in long-term discharge process Water passing capacity, substantial amounts of precipitation can be produced in pipeline, when serious, also can cause pipeline breaking, and if entered containing the waste water of manganese Enter in our normal Drinking Waters, chronic poisoning also can be caused to be detrimental to health, but China's manganese resource is relatively scarce Weary, rich ore is less, due to the restriction of each side such as equipment and treatment technology in the exploitation of a large amount of manganese ores and deep-processing process, makes The waste material containing manganese of China and Mn-bearing waste water pollution are more serious, and manganese ore mine water pollution can be divided into mineral pollution, Organic substance dirty Dye and germ contamination.Also there is radioactive material contamination and thermal pollution in some mines.Mineral pollution has sand, mud granule, ore deposit Thing impurity, dust, solvency, bronsted lowry acids and bases bronsted lowry etc.;Organic Pollution has the oxygen of oils and fatss, biological metabolic product, timber and other materials Change catabolite.The polluting of rock dust, breeze and the associated mineral that germ contamination is mainly exploited, be scattered in transportation.Manganese One big feature of Ore mine water is that manganese ion content is high, and the manganese in mine water is by the oxide of manganese, sulfur in rock and mineral Caused by compound, carbonate and silicate etc. are dissolved in water.In oxidizing process, manganese migrates generation mn2 in water, therefore in mine water Manganese is mainly existed with mn2 form.During mining, discharge a large amount of waste water barren rocks from down-hole, pollute river, occupy A large amount of farmland, mountain forest, grasslands, if destroy ecological balance it can be seen that manganese ore waste water deal with improperly will result in serious Environmental pollution, passes through substantial amounts of experiment for this present inventor and studies, there is provided a kind of method processing manganese ore waste water.
Content of the invention
For solving above-mentioned technical problem, the invention provides a kind of method processing manganese ore waste water.
The present invention is achieved by the following technical programs:
A kind of method processing manganese ore waste water, the method comprises the following steps:
A, absorption: manganese ore waste water is imported in sedimentation tank, adds char-forming material, stewing process 3-7h in manganese ore waste water;
B, irradiation: after the completion of stewing process, the supernatant taking out waste water carries out ultraviolet treatment with irradiation, then add strong Oxidant, according to the linear velocity stirring 16-20min of regulation;
C, second adsorption: continuously add char-forming material in the supernatant completing to treatment with irradiation, process 1-2h;
D, coagulation discharge: add flocculant in the supernatant completing to second adsorption, stand after stirring reaction 16-20min 1h separates and discharges.
Char-forming material in described step a is made up of following raw material: rice husk 8-14 part, timber 8-14 part, swelling Native 6-12 part, kieselguhr 4-12 part, calcite 4-8 part, quartz sand 4-8 part, zeolite 2-8 part, gelatin 4-10 part.
The preparation method of described char-forming material is: by calcite and zeolite be crushed to after 220-260 mesh with bentonite, diatom Soil, quartz sand, mix homogeneously obtain compound, after the wood particle that timber is cut into a diameter of 0.8-1cm is mixed with rice husk Pour the diesel oil improved quality as wood particle and rice husk 5-7%, after igniting is fired into black wood charcoal, is put out by water with water and obtain carbon material, according to than After compound is mixed homogeneously with carbon material by example, put into and in pulverizer, be crushed to 220-260 mesh, obtain mixed powder, by mixed powder After material is mixed with water according to mass ratio, add gelatin, obtain the carbonization material for wastewater treatment finally by dried Material finished product.
The ratio mixing for 1:1 according to mass ratio of the mixed proportion of described compound and carbon material.
Described step mixed powder is 1:1 with the mass ratio of water.
The time of described step b middle-ultraviolet lamp treatment with irradiation is 8-16min, and irradiation distance is 12-18cm.
The temperature of described dried is 60-70 DEG C, and drying time is 20-30min.
Strong oxidizer in described step b is potassium permanganate.
Stirring wire velocity control in described step b is 8-12m/s.
Flocculant in described step d is iron sulfate.
The beneficial effects of the present invention is: present invention employs absorption method twice, effectively will be a large amount of in manganese ore waste water Harmful substance suctions out, and the process of combined with ultraviolet radiation, further waste water is sterilized, the self-control carbon that the present invention adopts Change material and there is extremely strong absorption, clean-up effect, and processing method simply, effect substantially, finally coordinates efficient flocculant again, Serve with char-forming material and mutually make up, propose efficient effect.
Specific embodiment
Below in conjunction with specific embodiment, technical scheme is further described, but claimed scope is not It is confined to described.
Embodiment one
A kind of method processing manganese ore waste water, the method comprises the following steps:
A, absorption: manganese ore waste water is imported in sedimentation tank, adds char-forming material, stewing process 3h in manganese ore waste water;
B, irradiation: after the completion of stewing process, the supernatant taking out waste water carries out ultraviolet treatment with irradiation, at ultraviolet irradiation The time of reason is 8min, and irradiation distance is 12cm, then adds potassium permanganate, stirs for 8m/s according to stirring wire velocity control 16min;
C, second adsorption: continuously add char-forming material in the supernatant completing to treatment with irradiation, process 1h;
D, coagulation discharge: add iron sulfate in the supernatant completing to second adsorption, after stirring reaction 16min, standing 1h divides From discharging.
Char-forming material formula: 8 parts of rice husk, 8 parts of timber, 6 parts of bentonite, 4 parts of kieselguhr, 4 parts of calcite, 4 parts of quartz sand, 2 parts of zeolite, 4 parts of gelatin.
Char-forming material preparation method: by calcite and zeolite be crushed to after 220 mesh with bentonite, kieselguhr, quartz sand, mixed Close and uniformly obtain compound, the wood particle that timber is cut into a diameter of 0.8cm is poured after being mixed with rice husk and improves quality as timber Granule and the diesel oil of rice husk 5%, after igniting is fired into black wood charcoal, is put out by water with water and obtain carbon material, will according to the ratio for 1:1 for the mass ratio After compound is mixed homogeneously with carbon material, put into and in pulverizer, be crushed to 220 mesh, obtain mixed powder, mixed powder is pressed with water After the ratio mixing for 1:1 for the mass ratio, add gelatin, obtain the carbonization for wastewater treatment finally by dried Finished material, the temperature of dried is 60 DEG C, and drying time is 20min.
Embodiment two
A kind of method processing manganese ore waste water, the method comprises the following steps:
A, absorption: manganese ore waste water is imported in sedimentation tank, adds char-forming material, stewing process 7h in manganese ore waste water;
B, irradiation: after the completion of stewing process, the supernatant taking out waste water carries out ultraviolet treatment with irradiation, at ultraviolet irradiation The time of reason is 16min, and irradiation distance is 18cm, then adds potassium permanganate, stirs for 12m/s according to stirring wire velocity control Mix 20min;
C, second adsorption: continuously add char-forming material in the supernatant completing to treatment with irradiation, process 2h;
D, coagulation discharge: add iron sulfate in the supernatant completing to second adsorption, after stirring reaction 20min, standing 1h divides From discharging.
Char-forming material formula: 14 parts of rice husk, 14 parts of timber, 12 parts of bentonite, 12 parts of kieselguhr, 8 parts of calcite, quartz sand 8 parts, 8 parts of zeolite, 10 parts of gelatin.
Char-forming material preparation method: by calcite and zeolite be crushed to after 260 mesh with bentonite, kieselguhr, quartz sand, mixed Close and uniformly obtain compound, the wood particle that timber is cut into a diameter of 1cm is poured after being mixed with rice husk and improves quality as timber Grain and the diesel oil of rice husk 7%, after igniting is fired into black wood charcoal, is put out by water with water and obtain carbon material, will mix according to the ratio for 1:1 for the mass ratio Close after material mixs homogeneously with carbon material, put into and in pulverizer, be crushed to 260 mesh, obtain mixed powder, by mixed powder and water according to After mass ratio is the ratio mixing of 1:1, adds gelatin, obtain the carbonization material for wastewater treatment finally by dried Material finished product, the temperature of dried is 70 DEG C, and drying time is 30min.
Embodiment three
A kind of method processing manganese ore waste water, the method comprises the following steps:
A, absorption: manganese ore waste water is imported in sedimentation tank, adds char-forming material, stewing process 5h in manganese ore waste water;
B, irradiation: after the completion of stewing process, the supernatant taking out waste water carries out ultraviolet treatment with irradiation, at ultraviolet irradiation The time of reason is 12min, and irradiation distance is 15cm, then adds potassium permanganate, stirs for 15m/s according to stirring wire velocity control Mix 18min;
C, second adsorption: continuously add char-forming material in the supernatant completing to treatment with irradiation, process 1.5h;
D, coagulation discharge: add iron sulfate in the supernatant completing to second adsorption, after stirring reaction 18min, standing 1h divides From discharging.
Char-forming material formula: 11 parts of rice husk, 11 parts of timber, 9 parts of bentonite, 8 parts of kieselguhr, 6 parts of calcite, quartz sand 6 Part, 5 parts of zeolite, 7 parts of gelatin.
Char-forming material preparation method: by calcite and zeolite be crushed to after 240 mesh with bentonite, kieselguhr, quartz sand, mixed Close and uniformly obtain compound, the wood particle that timber is cut into a diameter of 0.9cm is poured after being mixed with rice husk and improves quality as timber Granule and the diesel oil of rice husk 6%, after igniting is fired into black wood charcoal, is put out by water with water and obtain carbon material, will according to the ratio for 1:1 for the mass ratio After compound is mixed homogeneously with carbon material, put into and in pulverizer, be crushed to 240 mesh, obtain mixed powder, mixed powder is pressed with water After the ratio mixing for 1:1 for the mass ratio, add gelatin, obtain the carbonization for wastewater treatment finally by dried Finished material, the temperature of dried is 65 DEG C, and drying time is 25min.

Claims (10)

1. a kind of process manganese ore waste water method it is characterised in that: the method comprises the following steps:
A, absorption: manganese ore waste water is imported in sedimentation tank, adds char-forming material, stewing process 3-7h in manganese ore waste water;
B, irradiation: after the completion of stewing process, the supernatant taking out waste water carries out ultraviolet treatment with irradiation, then adds Strong oxdiative Agent, according to the linear velocity stirring 16-20min of regulation;
C, second adsorption: continuously add char-forming material in the supernatant completing to treatment with irradiation, process 1-2h;
D, coagulation discharge: add flocculant in the supernatant completing to second adsorption, after stirring reaction 16-20min, standing 1h divides From discharging.
2. according to claim 1 process manganese ore waste water method it is characterised in that: the char-forming material in described step a It is made up of following raw material: rice husk 8-14 part, timber 8-14 part, bentonite 6-12 part, kieselguhr 4-12 part, calcite 4- 8 parts, quartz sand 4-8 part, zeolite 2-8 part, gelatin 4-10 part.
3. according to claim 2 process manganese ore waste water method it is characterised in that: the preparation method of described char-forming material For: by calcite and zeolite be crushed to after 220-260 mesh with bentonite, kieselguhr, quartz sand, mix homogeneously and obtain compound, The wood particle that timber is cut into a diameter of 0.8-1cm is poured after being mixed with rice husk improves quality as wood particle and rice husk 5-7% Diesel oil, igniting be fired into black wood charcoal after, put out by water with water and obtain carbon material, after proportionally compound being mixed homogeneously with carbon material, put Enter to be crushed to 220-260 mesh in pulverizer, obtain mixed powder, after mixed powder is mixed with water according to mass ratio, add Gelatin, obtains the char-forming material finished product for wastewater treatment finally by dried.
4. the method processing manganese ore waste water according to claim 3 it is characterised in that: the mixing of described compound and carbon material Ratio ratio mixing for 1:1 according to mass ratio.
5. the method processing manganese ore waste water according to claim 3 it is characterised in that: described step mixed powder and water Mass ratio is 1:1.
6. the method processing manganese ore waste water according to claim 1 it is characterised in that: described step b middle-ultraviolet lamp irradiates The time processing is 8-16min, and irradiation distance is 12-18cm.
7. according to claim 3 process manganese ore waste water method it is characterised in that: the temperature of described dried is 60-70 DEG C, drying time is 20-30min.
8. according to claim 1 process manganese ore waste water method it is characterised in that: the strong oxidizer in described step b For potassium permanganate.
9. according to claim 1 process manganese ore waste water method it is characterised in that: the stirring linear speed in described step b Degree is controlled to 8-12m/s.
10. according to claim 1 process manganese ore waste water method it is characterised in that: the flocculant in described step d is Iron sulfate.
CN201610729983.1A 2016-08-25 2016-08-25 Method for treating manganese ore wastewater Active CN106365365B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610729983.1A CN106365365B (en) 2016-08-25 2016-08-25 Method for treating manganese ore wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610729983.1A CN106365365B (en) 2016-08-25 2016-08-25 Method for treating manganese ore wastewater

Publications (2)

Publication Number Publication Date
CN106365365A true CN106365365A (en) 2017-02-01
CN106365365B CN106365365B (en) 2020-02-14

Family

ID=57902749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610729983.1A Active CN106365365B (en) 2016-08-25 2016-08-25 Method for treating manganese ore wastewater

Country Status (1)

Country Link
CN (1) CN106365365B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040188352A1 (en) * 2003-03-28 2004-09-30 Avijit Dey Apparatus and method for continuous electrodeionization
CN104229957A (en) * 2013-06-24 2014-12-24 张家领 Compound flocculant taking natural minerals as main components
CN105236637A (en) * 2015-10-10 2016-01-13 贵州万山兴隆锰业有限公司 Manganese ore wastewater comprehensive treatment method
CN105706704A (en) * 2016-03-02 2016-06-29 贵州闲草堂医药科技有限公司 Method for cultivating rhizoma gastrodiae by taking carbonization material as rhizoma gastrodiae cultivating filler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040188352A1 (en) * 2003-03-28 2004-09-30 Avijit Dey Apparatus and method for continuous electrodeionization
CN104229957A (en) * 2013-06-24 2014-12-24 张家领 Compound flocculant taking natural minerals as main components
CN105236637A (en) * 2015-10-10 2016-01-13 贵州万山兴隆锰业有限公司 Manganese ore wastewater comprehensive treatment method
CN105706704A (en) * 2016-03-02 2016-06-29 贵州闲草堂医药科技有限公司 Method for cultivating rhizoma gastrodiae by taking carbonization material as rhizoma gastrodiae cultivating filler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张克荣等: ""活性炭对锰吸附作用的研究"", 《中国卫生检验杂志》 *

Also Published As

Publication number Publication date
CN106365365B (en) 2020-02-14

Similar Documents

Publication Publication Date Title
CN103073166B (en) Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge
CN107821090B (en) A kind of planting soil and preparation method thereof
CN102992559B (en) Method for comprehensively utilizing anaerobic digestion and carbonization of municipal sludge
CN102886247B (en) Method for preparing adsorbent by virtue of red mud in alumina industry and sludge in sewage treatment
CN104874350B (en) Medium material for removing underground water heavy metal arsenic pollution and preparation method of medium material
CN104973995A (en) Phosphate fertilizer taking waste as main raw material and preparation method of phosphate fertilizer
CN102432152B (en) Method for pretreating and strengthening sludge dehydration by using acetylene sludge
CN102001814A (en) Conditioner for sludge dehydration and conditioning method
CN106630813A (en) Curing agent for treating drill cuttings and application thereof
CN103641286A (en) Sludge stabilizing method
CN106508163B (en) A waste water-based drilling fluid soil treatment composition and its application
CN104830396A (en) Preparation method of sludge clean fuel
CN106365365A (en) Method of treating manganese ore waste water
CN101747900B (en) Method for preparing soil conditioner by carrying out carbonization treatment on lake substrate sludge
CN106336052B (en) A kind of method of adsorption treatment Mn-bearing waste water
JP2008062219A (en) Sludge treatment method and porous material
CN102731063A (en) Method for preparing ceramsite by water supply sludge and sewage sludge
CN106186168A (en) A kind of char-forming material for waste water process and preparation method thereof
CN106277500B (en) A kind of processing method of Mn-bearing waste water
CN106186477B (en) A kind of integrated conduct method of manganese ore waste water
CN102491607A (en) Technology for producing sewage adsorbing stones by using sewage processing plant sludge
Zeng et al. Plant ash prevents acid mine drainage from sulfur-bearing tailings through multiple actions—A low-cost alkaline material
CN106186478A (en) A kind of char-forming material processes the method for waste water
CN104998615A (en) Charcoal preparation method based on mattress fermented feed and application thereof
CN110117057A (en) Cyanide wastewater or ore pulp treatment agent

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20200713

Address after: 3 / F, building 2, economic development zone, Wanshan District, Tongren City, Guizhou Province

Patentee after: Tongren Guizhou Hecheng Manganese Industry Co.,Ltd.

Address before: Xi Xiang prosperous village Wanshan District 554200 in Guizhou province Tongren City

Patentee before: GUIZHOU WANSHAN XINGLONG MANGANESE INDUSTRY Co.,Ltd.

TR01 Transfer of patent right
CP01 Change in the name or title of a patent holder

Address after: 554299 floor 3, building 2, economic development zone, Wanshan District, Tongren City, Guizhou Province

Patentee after: Guizhou Tongren Hecheng Manganese Alloy Co.,Ltd.

Address before: 554299 floor 3, building 2, economic development zone, Wanshan District, Tongren City, Guizhou Province

Patentee before: Tongren Guizhou Hecheng Manganese Industry Co.,Ltd.

CP01 Change in the name or title of a patent holder