CN205710228U - Unmanned low cost green drink water purifying processing system - Google Patents

Abstract

The unattended low-cost green drinking water purification treatment system involves green drinking water purification and high-quality water supply systems. It is processed into purified water that removes microorganisms and can be directly drunk; then adopts a sealed storage method isolated from the outside world and daily disinfection with ultraviolet disinfection without disinfection by-products to provide users with safe, green and high-quality drinking purified water; using a front-end water pump Or source water static pressure provides power to directly supply water to users, and automatically pressurizes and increases the flow of peak water without adding additional equipment, providing low-energy quality water supply. The system includes source water pumps, pretreatment equipment, ultrafiltration membranes, closed water storage, backwash pumps, ultraviolet disinfection equipment, connecting pipes, valves, testing instruments, electrical, and automatic control systems between various equipment. It can be used as production, domestic water, drinking water, reclaimed water reuse and sewage treatment equipment.

Description

Unattended low-cost green drinking water purification treatment system

technical field

The invention is a green drinking water purification and high-quality water supply system, which is mainly used in the fields of water treatment (industrial and agricultural water supply and drainage, municipal water supply and drainage, etc.), production and domestic water treatment, and reclaimed water treatment. It is an ideal equipment for safe drinking water treatment and water supply in small cities, towns, and rural areas; it is also an ideal equipment for deep purification of water supply in urban communities.

Background technique

At present, drinking water production plants (tap water plants) basically follow the principle of sedimentation (mainly flocculation) → filtration (mainly sand filtration, a small part of activated carbon filtration, a small part of newly modified ultrafiltration membrane filtration) → adding disinfectants (Liquid chlorine disinfection and chlorine dioxide) → clean water pool (unclosed) → water supply pump. During the entire treatment process, except for the ultrafiltration membrane filtration which can effectively retain bacteria and viruses, other filtered water carries bacteria and viruses; after coming out of the filter tank to the clean water tank, it is in contact with external objects such as air, which breeds bacteria and viruses again ; In order to ensure the biological safety of drinking water, chemical disinfection (liquid chlorine disinfection and chlorine dioxide) with long-term disinfection ability is used, resulting in the generation of toxic disinfection by-products and reducing drinking safety.

In a small number of rural water improvements, there are also small equipment that do not use clear water tanks and are directly supplied after filtration with ultrafiltration membranes; the shortcoming is that they cannot cope with peak water use, and only appropriately increase the number of ultrafiltration membranes (because the cost cannot be added to the peak value) The amount of treatment when using water), and reduce the quality of water supply to deal with it, resulting in a decline in people's quality of life.

The water quality after advanced treatment by ultrafiltration membrane technology is excellent and can be drunk directly, but it can't do anything about turbidity source water. It is mostly used for groundwater with better water quality, high-quality mountain spring water and reservoir water treatment.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art, to provide a kind of source water that meets the requirements of drinking water, such as surface water, ground water, municipal tap water, etc., to be treated with green drinking water purification equipment into purified water that can be directly drunk, and is safe. , High-quality, low-cost, unattended unattended low-cost green drinking water purification system.

The unattended low-cost green drinking water purification treatment system of the present invention is composed of source water pumps, pretreatment equipment, ultrafiltration membranes, airtight water storage, backwash pumps, ultraviolet disinfection equipment, and detection instruments. The connecting pipes are connected end to end through the connecting pipes, and the connecting pipes between each equipment are equipped with valves, electrical and automatic control systems.

Described unattended low-cost green drinking water purification treatment system, its usage method is:

a. Check the source water pump, pretreatment equipment, ultrafiltration membrane, closed water storage, backwash pump (peak water supply pump), ultraviolet disinfection equipment, and testing instruments. When the pressure of the source water meets the requirements, do not turn on the source water pump. When the pressure of the source water does not meet the requirements, the source water pump is turned on, and the source water is pumped to the pretreatment equipment, ultrafiltration membrane, airtight water storage, backwash pump, and ultraviolet disinfection equipment through the connecting pipeline in sequence, and is set in each equipment Connect the electric valve and manual valve on the pipeline, and the detection instrument detects the pressure, flow, online turbidity and temperature, and transmits the detected amount to the automatic control system;

b. Confirm the processing capacity of the ultrafiltration membrane according to the detected maximum flow rate of water production; confirm the size of the closed water storage device and the ultraviolet disinfection equipment according to the maximum water supply volume; determine the backwash pump according to the maximum water supply volume and backwash volume ( Peak feed water pump) flow parameters;

c. According to the highest turbidity of the source water and the flow rate to be treated that is consistent with the processing capacity of the ultrafiltration membrane in step b, confirm that the pretreatment equipment corrects the processing flow rate, and the corrected processing flow rate is the final processing rate plus the flow parameter discharged with the sediment; press Correction The flow parameters, as well as the pressure loss of the pretreatment equipment, the pressure loss of the ultrafiltration, and the water supply pressure transmitted to the user, confirm the pressure parameters of the source water pump;

d. Set the connecting pipe specifications and valve specifications between each equipment according to the flow rate between each section confirmed in steps b and c;

e. Individual equipment debugging, instrument calibration; and then on-line debugging;

f. Disinfect the equipment and pipelines, and after trial operation and optimization, they can be officially put into operation.

In the unattended low-cost green drinking water purification treatment system, the pretreatment equipment is one of mechanical pre-filter or pretreatment equipment with coagulation and sedimentation; the pretreatment equipment is used for pretreatment of source water, according to The water quality of the source water is selected: the source water with low turbidity is equipped with a mechanical pre-filter, and the source water with high turbidity is equipped with coagulation and sedimentation pretreatment equipment.

The ultrafiltration membrane element removes microorganisms in source water, such as viruses, bacteria, and algae.

The airtight water storage is a way of sealing and storing it in isolation from the outside world.

The unattended low-cost green drinking water purification treatment system is a kind of water supply driven by the power of the front stage, that is, the source water pump or the source static pressure, the conventional water supply in the off-peak period, and the pressurized and increased flow water supply in the peak period. Methods.

The airtight water storage device is composed of an outer wall and an inner wall. The outer wall is a protective shell made of a solid material, and the inner wall is smooth without burrs; the inner wall is a bag-shaped or sac-shaped inner bag made of a flexible film material, and the inner bag is completely sealed. , respectively connected to the water production port of the ultrafiltration membrane element and the inlet of the backwash pump through the inlet and outlet.

The outer wall of the airtight water storage is a protective shell made of steel or composite material.

The inner wall of the airtight water storage is made of polyurethane, PVC_U to make a water bag or a water bag.

In the unattended low-cost green drinking water purification treatment system, the backwash pump is used as a backwash pump for ultrafiltration membranes, and at the same time, it is used to provide high-quality water supply during peak water pressure and flow, that is, a peak water supply pump.

The present invention adopts two basic treatment processes: standard treatment process and energy-saving treatment process; standard treatment process is non-pressure source water treatment process: source water → source water pump (providing power) → maintenance-free pretreatment equipment → ultrafiltration membrane → Closed water storage → Backwash pump (peak water pump) → Ultraviolet disinfection equipment → User; Water tank → backwash pump (peak water pump) → ultraviolet disinfection equipment → user; the main difference is whether there is a source water pump. The source water enters the pretreatment equipment driven by the power provided by the source water pump (omitted when it is under pressure). In the pretreatment equipment, the large suspended solids, small suspended solids and colloids are precipitated, separated and discharged, and the clarified The source water is sent from the outlet to the ultrafiltration membrane for fine filtration. The ultrafiltration membrane module intercepts suspended solids such as viruses, bacteria, algae, and colloids, and macromolecular organic matter in the source water and discharges them from the sewage outlet (forward washing or backwashing) or the inlet. (backwash) discharge, while the purified water is sent into the closed water storage from the water production port, and the purified water in the closed water storage is driven by the power of the source water pump (or the self-pressure of the source water) through the backwash pump (peak value) water supply pump), UV disinfection equipment to directly supply water to users.

The maintenance-free pretreatment equipment is used for pretreatment of source water, providing water quality that meets the requirements of influent water for the lower-level ultrafiltration membranes, and ensuring the stable operation of ultrafiltration. According to the water quality of the source water, the corresponding pretreatment equipment is selected. For the source water with low turbidity, a mechanical pre-filter is equipped to intercept, separate and discharge the large solid suspended matter in the source water; for the source water with high turbidity The water is equipped with a coagulation and sedimentation pretreatment device to precipitate, separate and discharge small suspended particles and colloids. The pretreatment equipment adopts maintenance-free hardware design, and it is fully automatically controlled by the automatic control system, which is guaranteed from the two links of software and hardware to achieve maintenance-free.

Ultrafiltration membranes are precision filtration equipment for unattended low-cost green drinking water purification treatment systems. UF membranes with a retention capacity of less than 50,000 Daltons (larger Daltons can be used for reclaimed water reuse) are selected for drinking water treatment. , Effectively retain suspended solids such as viruses, bacteria, algae, colloids, and macromolecules in the source water, and discharge them through the sewage outlet, while the purified water that can be directly drunk is introduced into the airtight water storage after coming out of the outlet.

The airtight water storage is composed of two parts. The outer part is a protective shell made of strong materials, such as steel and composite materials. The inner wall is smooth and burr-free; the inner part is made of flexible membrane materials, such as polyurethane, PVC_U, etc. The inner bag is bag-like or sac-like, and the bag-like shape is like a water bag; the sac-like shape is like a water sac; the inner bag is completely sealed, and is only connected to the ultrafiltration water product and the inlet of the backwash water pump through the inlet and outlet. The airtight water storage is flexible within the range of the volume of the shell and does not bear pressure. After it is filled to the shell, it is protected by the shell and is pressure-bearing and conductive. At the same time, provide sufficient drinking water reserves for peak water supply; reduce the number of ultrafiltration membranes and reduce investment costs.

The backwash pump (peak water supply pump) starts for a short time when the ultrafiltration membrane is backwashed, and automatically starts the pressurization and flow increase when the water is in the peak, and provides users with high-quality water supply without increasing the equipment; the water consumption is not large (less than the ultrafiltration membrane water production capacity), it will not start (or stop), greatly reducing operating costs.

Viruses, bacteria, and algae in the source water are effectively intercepted during ultrafiltration, and there are no viruses, bacteria, algae and other microorganisms in the drinking water; the airtight water storage device does not contact the outside world, has no source of microorganisms, and does not produce secondary pollution. Under the premise of aseptic drinking water (water retention, storage and sealing), the use of preventive green disinfection treatment is the premise to ensure high quality. Here, ultraviolet disinfection equipment is used as daily preventive disinfection, without additional additions, and no disinfection by-products; chlorine dioxide green disinfectant is regularly used for long-term disinfection of the entire system and pipelines, and this is also used in tube extension and damage repair Disinfect once in one way.

The automatic control system will collect real-time process parameters such as pressure, flow, turbidity, temperature, etc., monitor the status of pumps, valves, ultraviolet disinfection and other equipment, and control pumps, valves, ultraviolet disinfection and other equipment as required to realize unattended fully automatic control. At the same time, the operation data of the unattended low-cost green drinking water purification treatment system is transmitted to the central monitoring computer through the wireless public network.

Unattended low-cost green drinking water purification treatment system adopts effective and reliable treatment technology, which reduces input and operating costs, does not change the mineral composition of water, and fully automatic unattended way to effectively intercept and isolate viruses, bacteria, and algae and other microorganisms, and then adopt the preventive sealed storage method isolated from the outside world and the daily disinfection measures of ultraviolet disinfection without disinfection by-products to provide users with safe, green and high-quality drinking purified water. The invention uses the front-end water pump or source water static pressure to provide power to directly supply water to users, and automatically pressurizes and increases the flow of peak water without adding additional equipment to provide low-energy quality water supply. It is a safe, high-quality, low-cost, unattended, green drinking water purification treatment system.

Description of drawings

Figure 1 shows the standard treatment process for source water without pressure.

Figure 2 shows the energy-saving treatment process of source water under pressure.

In the figure, 1-source water pump, 2-pretreatment equipment, 3-ultrafiltration membrane, 4-closed water storage, 5-backwash pump (peak water pump), 6-ultraviolet disinfection equipment, 7-valve, 8 - Detection instrumentation.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings, but not limited to the embodiments.

Embodiment 1: brook water (river water) water treatment

As shown in Figure 1, the unattended low-cost green drinking water purification system needs to be equipped with source water pumps to provide power, coagulation sedimentation pretreatment equipment, ultrafiltration membranes, closed water storage, backwash pumps, that is, peak feed water pumps, Various electric valves and manual valves for ultraviolet disinfection equipment, instruments for detecting pressure, flow, online turbidity, temperature, etc., connecting pipelines, automatic control systems, etc.

The first step is to confirm the processing capacity of the ultrafiltration membrane according to the daily water flow; confirm the size of the closed water storage device and the ultraviolet disinfection equipment according to the maximum water supply; determine the backwash according to the maximum water supply and the maximum required backwash volume Pump flow and other parameters.

The water quality of stream or river water is mainly based on turbidity, which varies greatly with the seasons, and the rainy season is the most turbid. To treat this type of water, it is necessary to use coagulation sedimentation pretreatment equipment; Turbidity and the flow rate to be treated, the flow rate is consistent with the ultrafiltration membrane to confirm the corrected treatment flow rate of the coagulation sedimentation pretreatment equipment, the final treatment amount plus the amount discharged with the sediment and other equipment parameters; according to the corrected flow parameters, And the pressure loss of the coagulation sedimentation pretreatment equipment, the pressure loss of ultrafiltration, and the water supply pressure transmitted to the user to confirm the parameters of the source water pump.

Confirm the connecting pipe specifications and valve specifications between each equipment according to the flow rate between each section.

The second step is to design and manufacture coagulation sedimentation pretreatment equipment, ultrafiltration membranes, airtight water storage and other equipment according to the flow rate and other parameters of each equipment and on-site installation space, and purchase source water pumps, backwash pumps, ultraviolet disinfection equipment, Valves, instruments for detecting pressure, flow, online turbidity, temperature, etc., connecting pipelines, etc., purchase integrated electrical and automatic control systems, etc.

The third step is to install in-place coagulation and sedimentation pretreatment equipment, ultrafiltration membranes, airtight water storage, water pumps, ultraviolet disinfection equipment, etc. according to the layout plan and predetermined foundation; then connect the pipelines, and install various valves, instruments, electrical appliances, etc. Automatic control equipment.

The fourth step, individual equipment debugging, instrument calibration; finally online debugging.

The fifth step, equipment and pipeline disinfection.

The sixth step is trial operation→optimization→officially put into operation.

Embodiment 2: mountain spring water (reservoir water) processing

As shown in Figure 2, the unattended low-cost green drinking water purification treatment system only needs to be equipped with a mechanical pre-filter, an ultrafiltration membrane, a closed water storage, a backwash pump, and an online pressure detection system for high-quality source water under pressure. , flow, turbidity, temperature, etc., connected pipelines, automatic control systems, etc.

First, confirm the processing capacity of mechanical pre-filter and ultrafiltration membrane according to the daily water flow; confirm the size of the closed water storage and ultraviolet disinfection equipment according to the maximum water supply; Determine the backwash pump, that is, the flow rate of the peak feed pump and other parameters. And confirm the connecting pipe specifications and valve specifications between each equipment according to the flow rate between each section.

Secondly, according to the flow rate and other parameters of each equipment and the installation space on site, design and manufacture mechanical pre-filters, ultrafiltration membranes, airtight water storage and other equipment, and purchase backwash pumps, ultraviolet disinfection equipment, valves, test pressure, flow , online turbidity, temperature and other instruments, connecting pipelines, etc., and purchase integrated electrical and automatic control systems.

The third step is to install mechanical pre-filters, ultrafiltration membranes, airtight water storage, water pumps, ultraviolet disinfection equipment, etc. in place according to the layout drawing and predetermined foundation; then connect the pipelines, and install various valves, instruments, and electrical automatic controls at the same time equipment.

The fourth step, individual equipment debugging, instrument calibration; finally online debugging.

The fifth step, equipment and pipeline disinfection.

The sixth step is trial operation→optimization→officially put into operation.

Claims (6)

1. An unattended low-cost green drinking water purification treatment system is characterized in that it consists of source water pumps, pretreatment equipment, ultrafiltration membranes, airtight water storage, backwash pumps, ultraviolet disinfection equipment, and testing instruments. Each equipment is connected end to end through connecting pipes, and valves, electrical and automatic control systems are installed on the connecting pipes between each equipment. 2. The unattended low-cost green drinking water purification treatment system according to claim 1, wherein the pretreatment equipment is one of a mechanical prefilter or a pretreatment equipment with coagulation and sedimentation. 3. The unattended low-cost green drinking water purification treatment system according to claim 1, characterized in that, the ultrafiltration membrane element removes microorganisms in the source water, and the microorganisms are viruses, bacteria, and algae. 4. The unattended low-cost green drinking water purification treatment system according to claim 1, characterized in that the airtight water storage is composed of an outer wall and an inner wall, the outer wall is a protective shell made of a solid material, and the inner wall is smooth without burrs ; The inner wall is a bag-shaped or sac-shaped inner bag made of flexible membrane material. The inner bag is completely sealed and connected to the water production port of the ultrafiltration membrane and the inlet of the backwash pump through the inlet and outlet. 5. The unattended low-cost green drinking water purification treatment system according to claim 4, characterized in that the outer wall of the airtight water storage is a protective shell made of steel or composite materials. 6. The unattended low-cost green drinking water purification treatment system according to claim 4, characterized in that, the inner wall of the airtight water storage is made of polyurethane, PVC_U into a water bag or a water bag.