CN110862167A - Electrode foil corrosion wastewater treatment system and treatment process thereof - Google Patents
Electrode foil corrosion wastewater treatment system and treatment process thereof Download PDFInfo
- Publication number
- CN110862167A CN110862167A CN201910808630.4A CN201910808630A CN110862167A CN 110862167 A CN110862167 A CN 110862167A CN 201910808630 A CN201910808630 A CN 201910808630A CN 110862167 A CN110862167 A CN 110862167A
- Authority
- CN
- China
- Prior art keywords
- tank
- reverse osmosis
- microfiltration membrane
- wastewater
- water
- 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.)
- Pending
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 87
- 230000007797 corrosion Effects 0.000 title claims abstract description 87
- 239000011888 foil Substances 0.000 title claims abstract description 59
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 121
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 108
- 238000001471 micro-filtration Methods 0.000 claims abstract description 102
- 238000004140 cleaning Methods 0.000 claims abstract description 93
- 239000002351 wastewater Substances 0.000 claims abstract description 80
- 239000000706 filtrate Substances 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 13
- 231100000719 pollutant Toxicity 0.000 claims abstract description 13
- 238000011033 desalting Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 183
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 239000012141 concentrate Substances 0.000 claims description 29
- 239000010802 sludge Substances 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 239000012065 filter cake Substances 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 5
- 239000002455 scale inhibitor Substances 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 20
- 238000001514 detection method Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 238000000108 ultra-filtration Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011268 retreatment Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009295 crossflow filtration Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Crystallography & Structural Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides an electrode foil corrosion wastewater treatment system, which comprises: the pretreatment system is used for adjusting the pH value of the corrosion wastewater and decomposing pollutants in the corrosion wastewater to form a concentrated solution; the tubular microfiltration membrane system is used for receiving the concentrated solution conveyed from the front treatment system and filtering suspended particles in the concentrated solution; the two-stage reverse osmosis system is connected with the output end of the tubular microfiltration membrane system and is used for desalting the filtered filtrate; and the cleaning system is used for cleaning the tubular microfiltration membrane system and the two-stage reverse osmosis system at regular time. An electrode foil corrosion wastewater treatment process comprises the following steps: regulating the pH value of the corrosion wastewater and decomposing pollutants by a pretreatment system; s20: filtering suspended particles of the concentrated solution to form filtrate; s30: and desalting the filtrate. The electrode foil corrosion wastewater treatment system provided by the invention has the advantages of short reaction time, small occupied area and stable effluent quality.
Description
Technical Field
The invention belongs to the technical field of electrode foil wastewater treatment, and particularly relates to an electrode foil corrosion wastewater treatment system and a treatment process thereof.
Background
The electrode foil generally undergoes an etching process and a chemical conversion process, wherein the etching process takes the electronic optical foil as a raw material, and holes are formed on the surface of the electronic optical foil by etching through an electrochemical method, so that the surface areas of the cathode and anode optical foils are increased, and the specific capacitance of the cathode and anode optical foils is improved to prepare the etched foil. In the corrosion process, corrosion wastewater is generated, and in the past, the treatment method of the electrode foil corrosion wastewater is directly abandoned, so that water resources are greatly wasted.
At present, some enterprises slowly start to recover and treat the electrode foil corrosion wastewater, but the pretreatment stage of the electrode foil corrosion wastewater generally comprises four stages of chemical coagulation, precipitation, medium filtration and ultrafiltration.
Disclosure of Invention
The invention aims to provide an electrode foil corrosion wastewater treatment system, which solves the technical problems of large occupied area, long hydraulic retention time, incapability of working under an alkaline condition, easiness in blockage, limited water outlet quality and the like caused by adopting four stages of chemical coagulation, precipitation, medium filtration and ultrafiltration as pretreatment of corrosion wastewater in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is an electrode foil corrosion wastewater treatment system including:
the pretreatment system is used for adjusting the pH value of the corrosion wastewater and decomposing pollutants in the corrosion wastewater to form a concentrated solution;
the tubular microfiltration membrane system is used for receiving the concentrated solution conveyed from the pretreatment system and filtering suspended particles in the concentrated solution;
the two-stage reverse osmosis system is connected with the output end of the tubular microfiltration membrane system and is used for desalting the filtered filtrate;
and the cleaning system is used for cleaning the tubular microfiltration membrane system and the two-stage reverse osmosis system at regular time.
Further, the electrode foil corrosion wastewater treatment system also comprises a PLC control cabinet, wherein the PLC control cabinet is respectively electrically connected with the pretreatment system, the tubular microfiltration membrane system, the two-stage reverse osmosis system and the cleaning system, and the PLC control cabinet is used for controlling the working sequence of the pretreatment system, the tubular microfiltration membrane system, the two-stage reverse osmosis system and the cleaning system.
Further, the preprocessing system comprises:
the waste water equalizing tank is used for containing corrosive waste water;
the first reaction tank is used for adjusting the pH value of the corrosion wastewater conveyed by the wastewater equalizing tank;
and the second reaction tank is used for finely adjusting the pH value of the corrosion wastewater conveyed by the first reaction tank and adding a medicament to decompose pollutants in the corrosion wastewater to form a concentrated solution.
Furthermore, the electrode foil corrosion wastewater treatment system also comprises a concentration tank and a clear water collecting tank;
the concentration tank is used for receiving the concentrated solution conveyed from the pretreatment system, the concentrated solution input end of the tubular microfiltration membrane system is used for collecting the concentrated solution conveyed from the concentration tank, the clear water collection tank is used for collecting the filtrate output from the filtrate output end of the tubular microfiltration membrane system, and the tubular microfiltration membrane system is also provided with a backflow end used for returning the concentrated solution remained in the tubular microfiltration membrane system to the concentration tank.
Further, the bottom of the concentration tank is connected with a sludge collection tank which receives the concentrated solution when the concentration of the concentrated solution in the concentration tank is large, the sludge collection tank is connected with a filter press which is used for extruding sludge in the sludge collection tank into filter cakes, the water outlet end of the filter press is connected to the wastewater equalization tank, and the water outlet end in the sludge collection tank is also connected to the wastewater equalization tank.
Further, the cleaning system includes a first cleaning assembly;
the first cleaning assembly includes:
the input end of the cleaning pipeline is connected with the filtrate output end of the tubular microfiltration membrane system, and the output end of the cleaning pipeline is connected with the concentrated solution input end of the tubular microfiltration membrane;
the cleaning pump is arranged in the cleaning pipeline and is used for reversely conveying the filtrate output by the tubular microfiltration membrane system to the concentrated solution input end of the tubular microfiltration membrane system;
the cleaning valve is arranged in the cleaning pipeline and used for controlling the on-off of the cleaning pipeline;
and the chemical tank is arranged in the cleaning pipeline and is used for adding chemical reagents into the cleaning pipeline at regular time to enhance the cleaning effect.
Furthermore, the two-stage reverse osmosis system comprises a first-stage reverse osmosis component and a second-stage reverse osmosis component which are arranged in sequence;
the tubular microfiltration membrane system comprises a plurality of tubular microfiltration membranes which are connected in series; the tubular microfiltration membrane is made of SIC materials.
Furthermore, a security filter for removing fine particles with turbidity higher than 1 degree is connected between the primary reverse osmosis assembly and the clear water collecting tank, and a medicine adding structure for adding a scale inhibitor into the filtrate is arranged on a water inlet pipe of the primary reverse osmosis assembly;
a first high-pressure pump is arranged between the cartridge filter and the first-stage reverse osmosis component, and a second high-pressure pump is arranged between the first-stage water production tank and the second-stage reverse osmosis component.
Furthermore, the primary reverse osmosis component is also provided with a primary concentrated water end, and the primary concentrated water end is used for outputting concentrated water and can be connected with a concentrated water tank or returning the concentrated water to the clear water collecting tank;
the second-stage reverse osmosis component is also provided with a second-stage concentrated water end, and the second-stage concentrated water end is used for outputting concentrated water and can be connected with a concentrated water tank or reflows the concentrated water to the clear water collecting tank.
The electrode foil corrosion wastewater treatment system provided by the invention has the beneficial effects that: compared with the prior art, the electrode foil corrosion wastewater treatment system comprises a pretreatment system, a tubular microfiltration membrane system, a two-stage reverse osmosis system and a cleaning system, wherein concentrated solution is filtered by the tubular microfiltration membrane system, and the tubular microfiltration membrane system has strong adaptability to the water quality change of corrosion wastewater, short reaction time, stable effluent water quality and small occupied area. Meanwhile, the ultrafiltration system and the two-stage reverse osmosis system are cleaned at regular time by the cleaning system, so that the service lives of the ultrafiltration system and the two-stage reverse osmosis system are longer.
The invention also provides an electrode foil corrosion wastewater treatment process, which is used for treating the electrode foil corrosion wastewater by the electrode foil corrosion wastewater treatment system and comprises the following steps:
s10: adjusting the pH value of the corrosion wastewater through a pretreatment system and decomposing pollutants in the corrosion wastewater to form a concentrated solution;
s20: filtering the suspended particles of the concentrated solution in the step S10 through a tubular microfiltration membrane system to form filtrate;
s30: desalting the filtrate by a two-stage permeation system;
wherein, the working sequence of the steps S10, S20 and S30 is controlled by a PLC control cabinet, and the PLC control cabinet controls the cleaning system to clean the tubular microfiltration membrane system and the two-stage reverse osmosis system at specific time intervals.
Further, step S20 includes the steps of:
s21: conveying the concentrated solution to a concentration tank;
s22: conveying the concentrated solution in the concentration tank to a tubular microfiltration membrane system through a circulating pump so as to be filtered by the tubular microfiltration membrane system;
and at intervals, the PLC control cabinet controls the first cleaning component to clean the tubular microfiltration membrane system, and when the concentration of the concentrated solution in the concentration tank is too high, the PLC control cabinet controls the concentrated solution to be conveyed to a sludge collection tank and a filter press for collection treatment.
Further, the step S31 includes the following steps: part of the concentrated water output by the first-stage reverse osmosis module is conveyed back to the clear water collecting pool, and part of the concentrated water is discharged; the step S32 includes the following steps: and conveying the concentrated water output by the secondary reverse osmosis component back to the clear water collecting tank.
The electrode foil corrosion wastewater treatment process provided by the invention has the beneficial effects that: compared with the prior art, the electrode foil corrosion wastewater treatment process provided by the invention has the advantages that the electrode foil corrosion wastewater is treated, and the effects of high effluent quality, stable effluent quality and long operation period can be achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic flow diagram of an electrode foil corrosion wastewater treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic flow diagram of the pretreatment system and the tubular microfiltration system of FIG. 1;
FIG. 3 is a schematic flow diagram of the primary reverse osmosis module of FIG. 1.
Wherein, in the figures, the respective reference numerals:
1-pretreatment system; 2-a tubular microfiltration membrane system; 3-a concentration tank; 4-clear water collecting tank; 5-a circulating pump; 6-a sludge collecting tank; 7-a filter press; 8-a first cleaning assembly; 9-a first-stage reverse osmosis component; 10-a secondary reverse osmosis module; 11-first-level water production tank; 12-a secondary water production tank; 13-a cartridge filter; 14-a dosing structure; 15-a first high pressure pump; 16-a second high pressure pump; 17-a PLC control cabinet; 18-a concentrate tank; 19-a concentrate valve; 21-concentrated liquid input end; 22-filtrate output; 23-a reflux end; 31-a first liquid level detection device; 41-second liquid level monitoring device; 42-a first PH detection device; 81-washing the pipeline; 82-cleaning the pump; 83-cleaning the valve; 84-a chemical pool; 91-first level water inlet end; 92-first order pure water end; 93-first concentrated water end; 110-a wastewater equalization tank; 120-a first reaction tank; 130-a second reaction tank; 210-cleaning the inlet; 202-cleaning the inlet valve; 203-water inlet pipe; 204-a purge outlet; 205-cleaning the outlet valve; 206-outlet conduit.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, a system for treating electrode foil corrosion wastewater according to the present invention will now be described. The electrode foil corrosion wastewater treatment system is used for treating electrode foil corrosion wastewater so as to achieve the purpose of recycling.
The electrode foil corrosion wastewater treatment system comprises a pretreatment system 1, a tubular microfiltration membrane system 2, a two-stage reverse osmosis system and a cleaning system.
The pretreatment system 1 is used for adjusting the pH value of the corrosion wastewater and decomposing pollutants in the corrosion wastewater to form a concentrated solution. The tubular microfiltration membrane system 2 is used for receiving the concentrated solution conveyed from the pretreatment system 1 and filtering suspended particles in the concentrated solution. The two-stage reverse osmosis system is connected with the output end of the tubular microfiltration membrane system 2 and is used for desalting the filtered filtrate. The cleaning system is used for cleaning the tubular microfiltration membrane system 2 and the two-stage reverse osmosis system at regular time.
Here, it should be noted that the tubular microfiltration membrane system 2 utilizes the cross-flow filtration principle, can endure very high turbidity, has short hydraulic retention time, is also ultra-microfiltration, and has good effluent quality, so that the tubular microfiltration membrane system can replace four combined processes of chemical coagulation, precipitation, medium filtration and ultrafiltration.
So, after current processing system 1 inserts corrosion wastewater, at first, pretreatment system 1 will adjust corrosion wastewater's pH value to the pollutant that will corrode among the wastewater decomposes out and forms the concentrate, then tubular microfiltration membrane system 2 will filter the concentrate in order to obtain filtrating, and last two-stage reverse osmosis system will carry out desalination in proper order to the filtrating and handle in order to obtain the better play water of purity. Simultaneously, still can regularly wash tubular microfiltration membrane system 2 and two-stage reverse osmosis system through cleaning system to guarantee tubular microfiltration membrane system 2 and two-stage reverse osmosis system's life.
The electrode foil corrosion wastewater treatment system provided by the invention comprises a pretreatment system 1, a tubular microfiltration membrane system, a two-stage reverse osmosis system and a cleaning system, wherein a concentrated solution is filtered by the tubular microfiltration membrane system 2, and the tubular microfiltration membrane system 2 has strong adaptability to the water quality change of corrosion wastewater, short reaction time, stable effluent water quality and small occupied area. Meanwhile, the ultrafiltration system and the two-stage reverse osmosis system are cleaned at regular time by the cleaning system, so that the service lives of the ultrafiltration system and the two-stage reverse osmosis system are longer.
In the present embodiment, referring to fig. 2, the pretreatment system 1 includes a wastewater equalizing tank 110, a first reaction tank 120, and a second reaction tank 130. The wastewater equalizing tank 110 is used for containing corrosive wastewater, the first reaction tank 120 is used for adjusting the pH value of the corrosive wastewater conveyed by the wastewater equalizing tank 110, the second reaction tank 130 is used for fine adjusting the pH value of the corrosive wastewater conveyed by the first reaction tank 120, and a medicament is added to decompose pollutants in the corrosive wastewater to form a concentrated solution. Because it is difficult to adjust the PH of the waste corrosion water to a desired value at a time through the first reaction tank 120, the second reaction tank 130 is required to assist in fine adjustment of the PH, and meanwhile, the adjusting agent is added to the second reaction tank 130, and the stirring enables the adjusting agent to chemically react with the pollutants in the waste corrosion water to form insoluble suspended particles, which is a chemical coagulation process.
Preferably, in this embodiment, a fine grid net (not shown) may be further disposed before the wastewater equalization tank 110, and the fine grid net intercepts the large-volume particulate matters and the strip-like matters before the corrosive wastewater enters the wastewater equalization tank 110, so that the damage of the particulate matters and the strip-like matters to the pumps in the pipelines can be reduced.
It should be noted here that in the whole electrode foil corrosion wastewater treatment system, corrosion wastewater, concentrated solution, pure water, etc. need to be transported by using various pipes and pumps, for example, the corrosion wastewater in the wastewater equalization tank 110 needs to be transported to the first reaction tank 120 by a pipe and a lift pump, and the corrosion wastewater in the first reaction tank 120 needs to be transported to the second reaction tank 130 by another pipe and a lift pump, and if particulate matter and strip-like matter are involved in the pumps along with the liquid when the pumps are operated, the pumps are damaged.
In the present embodiment, referring to fig. 1 and fig. 2, the electrode foil corrosion wastewater treatment system further includes a concentration tank 3 and a clean water collecting tank 4. The tubular microfiltration membrane system 2 has a concentrate input end 21, a filtrate output end 22 and a return end 23, the concentration tank 3 is used for collecting the concentrate conveyed from the pretreatment system 1 (i.e. the second reaction tank 130), the concentrate input end 21 of the tubular microfiltration membrane system 2 is used for accessing the concentrate conveyed from the concentration tank 3, the clear water collection tank 4 is used for collecting the filtrate output from the filtrate output end 22 of the tubular microfiltration membrane system 2, and the return end 23 is used for returning the concentrate remaining in the tubular microfiltration membrane system 2 to the concentration tank 3.
Specifically, the top of concentrated pond 3 is equipped with first liquid level detection device 31 that is used for monitoring water level in the concentrated pond 3, be equipped with circulating pump 5 between concentrated pond 3 and the tubular microfiltration membrane system 2, through the liquid level in the concentrated pond 3 of first liquid level detection device 31 monitoring, when the liquid level reaches a take the altitude, start circulating pump 5 and carry the corruption waste water in the concentrated pond 3 to tubular microfiltration membrane system 2 in order to filter, and like this, can prevent when the concentrated pond 3 water-logging is very few, circulating pump 5 just starts the water in the concentrated pond 3 of extraction, the power of extravagant circulating pump 5 on the one hand, on the other hand also prevents the harm of concentrated pond 3 and circulating pump 5.
Equally, be equipped with the second liquid level monitoring devices 41 that are used for monitoring the liquid level above the clear water collecting pit 4, and simultaneously, because two-stage reverse osmosis system requires than higher to quality of water, consequently, still be equipped with the first PH detection device 42 that is used for monitoring the PH value above the clear water collecting pit 4, be equipped with the booster pump between clear water collecting pit 4 and the two-stage reverse osmosis system, liquid level and the PH value of filtrating all reach the standard in the clear water collecting pit 4, just can start the booster pump in order to carry the water in the clear water collecting pit 4 to two-stage reverse osmosis system, thereby can play the effect of protection to two-stage reverse osmosis system.
Preferably, in this embodiment, the tubular microfiltration membrane system 2 comprises a plurality of tubular microfiltration membranes connected in series, so that the tubular microfiltration membrane system 2 can adjust the water yield by increasing or decreasing the number of tubular microfiltration membranes connected in series according to the actual water yield, and is very simple and convenient to use.
Preferably, tubular microfiltration membrane adopts the SIC material to make, and the tubular microfiltration membrane of this application adopts firm tubular structure to form the membrane through the sintering method, therefore the condition of disconnected silk can not appear, simultaneously, because tubular microfiltration membrane's membrane aperture is very little (0.1 micron), can all hold back whole suspended particle and mud in the concentrate, its solid-liquid separation effect should be better than the sedimentation tank far away, tubular microfiltration membrane is to suspended particle's clearance more than 99%, even reaches 100%, the removal of turbidity can reach < 1NTU, the play water turbidity is similar with the running water. In addition, the tubular microfiltration membrane can work under alkaline conditions for a long time, and solid-liquid separation is realized to the greatest extent by utilizing the characteristic of low solubility of metal hydroxide in a high-alkali environment. Meanwhile, for the sludge bulking phenomenon in the traditional sedimentation process, the tubular microfiltration membrane system 2 can be easily solved because the sedimentation tank is not used for solid-liquid separation, thereby greatly reducing the complexity of management operation and enabling high-quality and stable water outlet.
In this embodiment, referring to fig. 2 again, the electrode foil corrosion wastewater treatment system further includes a sludge collection tank 6 and a filter press 7. The sludge collecting tank 6 is connected from the bottom of the concentration tank 3, the sludge collecting tank 6 is used for receiving the concentrated solution when the concentration of the concentrated solution in the concentration tank 3 is large, the concentrated solution is subjected to solid-liquid separation in the sludge collecting tank 6, and the water outlet end above the sludge collecting tank can be connected to the wastewater equalizing tank 110 so as to recover wastewater in the next round. The filter press 7 is connected to the sludge outlet end of the sludge collecting tank 6, and the sludge in the concentrating tank 3 can also be directly connected to the filter press 7, the filter press 7 is used for pressing the sludge into a filter cake for filter cake collection, and the water outlet end of the filter press 7 can be directly connected to the wastewater equalizing tank 110 for wastewater recovery of the next round. In the embodiment, the water delivery end of the sludge collection tank 6 and the filtered water of the filter press 7 can return to the wastewater equalization tank 110 for cyclic treatment, and the recovery rate is close to 100%. In addition, thorough solid-liquid separation can be realized by the filter press 7, and solid particles (filter cakes) can be recycled, so that the recycling of solid wastes is realized.
In this example, the tubular microfiltration membrane retains suspended particles in the concentrate during operation and forms a compressible filter cake on the surface of the tubular microfiltration membrane. The filter cake can also be used as a filtering medium, so that the filtering performance of the tubular microfiltration membrane is enhanced. But the cake layer also needs to be controlled to ensure that the transmembrane pressure differential is maintained within a reasonable range during filtration. When the solid content in the concentration tank 3 rises to a certain value, the concentrated water in the concentration tank 3 is discharged to the sludge collection tank through the pump, and the tubular microfiltration membrane is cleaned through the cleaning system.
Specifically, referring to fig. 2, the cleaning system includes a first cleaning assembly 8, and the first cleaning assembly 8 is specially used for cleaning the tubular microfiltration membrane. The first cleaning assembly 8 includes a cleaning line 81, a cleaning pump 82, a cleaning valve 83, and a chemical tank 84. The input of washing pipeline 81 is connected with tubular microfiltration membrane system 2's filtrating output 22, the output of washing pipeline 81 is connected with tubular microfiltration membrane's concentrate input, the scavenging pump 82 is arranged in washing pipeline 81, the scavenging pump 82 is arranged in reverse carrying the concentrated solution input 21 of tubular microfiltration membrane system 2 with the filtrating of tubular microfiltration membrane system 2 output, the purge valve 83 is arranged in washing pipeline 81, the purge valve 83 is used for controlling the break-make of washing pipeline 81, chemical pond 84 is arranged in regularly adding chemical reagent in washing pipeline 81 in order to strengthen the cleaning performance.
In this embodiment, after the tubular microfiltration membrane system 2 is operated for a period of time, the tubular microfiltration membrane system 2 needs to be backwashed normally, that is, the circulation pump 5 is turned off, the cleaning valve 83 is turned on, the cleaning pump 82 is started, and the filtrate output from the filtrate output 22 of the tubular microfiltration membrane system 2 is reversely conveyed to the concentrate input 21 thereof for backwashing. And when the system has run for a long time, when ordinary backwash can not clean the tubular microfiltration membrane, chemical cleaning can be carried out twice every week, and chemical cleaning is to increase the chemical reagent adding process on the basis of ordinary backwash, namely to start the chemical tank 84, for example, to clean the tubular microfiltration membrane by using the filtered liquid of 150-200 ppm sodium hypochlorite.
Referring to fig. 1, in the present embodiment, the two-stage reverse osmosis system includes a first-stage reverse osmosis module 9 and a second-stage reverse osmosis module 10, which are sequentially disposed, and the first-stage reverse osmosis module 9 and the second-stage reverse osmosis module 10 are sequentially disposed at the filtrate output end 22 of the tubular microfiltration membrane system 2, so that the produced water after being treated by the electrode foil corrosion wastewater treatment system has higher purity and higher recovery value.
The first-stage reverse osmosis module 9 has a first-stage water inlet end 91, a first-stage pure water end 92 and a first-stage concentrated water end 93, wherein the first-stage water inlet end 91 is used for accessing filtrate, the first-stage pure water end 92 is used for outputting purified water after purification treatment, and the first-stage concentrated water end 93 is used for outputting concentrated solution generated after purification.
Similarly, the secondary reverse osmosis module 10 has a secondary water inlet end (not shown), a secondary pure water end and a secondary concentrated water end, wherein the secondary water inlet end has a function corresponding to that of the primary water inlet end 91, the secondary pure water end has a function corresponding to that of the primary pure water end 92, and the secondary concentrated water end has a function corresponding to that of the primary concentrated water end 93.
In addition, in order to ensure that water in each stage can be retained and stored in the whole electrode foil corrosion wastewater treatment system, the electrode foil corrosion wastewater treatment system also comprises a primary water production tank 11 and a secondary water production tank 12.
The water tank 11 is produced to the one-level and is connected between the one-level pure water end 92 of one-level reverse osmosis subassembly 9 and the second grade of second grade reverse osmosis subassembly 10 intake the end, the second grade is produced the water tank 12 and is connected in the second grade pure water end of second grade reverse osmosis subassembly 10, the effect that the water tank 11 was produced to the one-level and second grade produced water tank 12 is similar with clear water collecting pit 4, be equipped with the third water level detection device who is used for monitoring the water level and the second PH detection device who is used for detecting the PH value on the water tank 11 is produced to the one-level, be equipped with the.
In the present embodiment, referring to fig. 1 and fig. 3, a cartridge filter 13 for removing fine particles with turbidity higher than 1 degree is connected between the primary reverse osmosis module 9 and the clean water collecting tank 4, and a chemical adding structure 14 for adding a scale inhibitor into the filtrate is arranged on a water inlet pipe of the primary reverse osmosis module 9. The cartridge filter 13 in this embodiment is used to filter fine particles (e.g., crushed resin) to prevent the fine particles from entering the primary reverse osmosis module 9 and the secondary reverse osmosis module 10 and damaging the primary reverse osmosis module 9 and the secondary reverse osmosis module 10. Meanwhile, the medicine adding structure 14 is used for adding a scale inhibitor before the filtrate enters the first reverse osmosis component, dispersing the insoluble inorganic salt in the water through the scale inhibitor, and preventing or interfering the insoluble inorganic salt from precipitating and scaling on the surface of the first-stage reverse osmosis component 9 or the second-stage reverse osmosis component 10.
A first high-pressure pump 15 is arranged between the cartridge filter 13 and the first-stage reverse osmosis component 9, and a second high-pressure pump 16 is arranged between the first-stage water production tank 11 and the second-stage reverse osmosis component 10. The first reverse osmosis module 9 and the second reverse osmosis module 10 both utilize pressure difference to realize desalination and purification, so the first high-pressure pump 15 is used for realizing the pressure difference between the first-stage water inlet end 91 and the first-stage pure water end 92 of the first reverse osmosis module 9, and the second high-pressure pump 16 is used for realizing the pressure difference between the second-stage water inlet end and the second-stage pure water end of the second reverse osmosis module 10.
In this embodiment, referring to fig. 3, the first-stage reverse osmosis module 9 further has a first-stage concentrate end 93, and the first-stage concentrate end 93 is used for outputting concentrate and can be connected to a concentrate tank or returning the concentrate to the clear water collecting tank 4. Specifically, be equipped with dense water valve 19 between one-level dense water end 93 and the dense water tank 18, when the dense water concentration of one-level dense water end 93 output was not high, can break off the dense water valve, during dense water got into clear water collecting pit 4, formed hydrologic cycle to there is water to flow all the time in guaranteeing one-level reverse osmosis subassembly 9, and then reach the purpose that certain one-level reverse osmosis subassembly 9 of preventing blockked up. When the concentration of the concentrated water output from the first-stage concentrated water end 93 is high, the concentrated water valve 19 is connected, and the concentrated water is introduced into the concentrated water tank 18 for subsequent treatment, so that the concentrated water with high concentration is prevented from entering the clear water collecting tank 4.
The secondary reverse osmosis module 10 also has a secondary concentrate end for outputting concentrate and which may be connected to a concentrate tank 18 or return the concentrate to the clear water collection tank 4. The connection of the secondary reverse osmosis module 10 to the concentrate tank 18 and the clean water collection tank 4 is the same as that of the primary reverse osmosis module 9, and a description thereof is not repeated.
In this embodiment, the cleaning system further includes a second cleaning assembly 20 and a third cleaning assembly (not shown), wherein the second cleaning assembly 20 is used for cleaning the primary reverse osmosis assembly 9, and the third cleaning assembly is used for cleaning the secondary reverse osmosis assembly 10.
Taking the second cleaning assembly 20 as an example, the second cleaning assembly 20 includes a cleaning inlet 201, a cleaning inlet valve 202, a water inlet pipe 203, two cleaning outlets 204, two cleaning outlet valves 205 and two water outlet pipes 206, the water inlet pipe 205 is connected to the first-stage water inlet 91 of the first-stage reverse osmosis assembly 9, the cleaning inlet 201 and the cleaning inlet valve 202 are both disposed on the water inlet pipe 205, the two water outlet pipes 206 are respectively connected to the first-stage pure water end 92 and the first-stage concentrated water end 93, and the two cleaning outlets 204 and two cleaning outlet valves 205 are respectively disposed on the two water outlet pipes 206. In this embodiment, since the operation principle of the primary reverse osmosis module 9 is opposite to that of the tubular micro-filtration membrane, the cleaning of the primary reverse osmosis module 9 should be performed by entering from the primary water inlet 91, and when the cleaning inlet 201 is connected to external clean water and the cleaning inlet valve 202 is connected, the clean water enters from the primary water inlet 91 and cleans solid particles on the membrane pores of the primary reverse osmosis module 9 and exits from the primary pure water end 92 or the primary concentrated water end 93, thereby completing the cleaning.
Preferably, in the present embodiment, the primary reverse osmosis module 9 and the secondary reverse osmosis module 10 have the same structure, the primary reverse osmosis module 9 includes a plurality of primary reverse osmosis membrane elements arranged in parallel, and the secondary reverse osmosis module 10 includes a plurality of secondary reverse osmosis membrane elements arranged in parallel.
Taking a first-stage reverse osmosis membrane element as an example, the first-stage reverse osmosis membrane element is a roll-type membrane element which is manufactured by winding a plurality of membrane bags on a central water collecting pipe of engineering plastics with holes. Each membrane bag is composed of two membrane sheets which are opposite to each other, a layer of polyester fiber is clamped between the membrane sheets to weave a fresh water grid, 3 edges around the membrane sheets are sealed by epoxy or polyurethane adhesive, and the fourth edge is reserved as a water production channel to be connected with the central water collecting pipe. A plastic separation net is laid and clamped between two adjacent membrane bags to form a water inlet runner (water inlet grid). The inlet water enters the membrane element from one end of the membrane element along the inlet grid outside the membrane bag, part of the inlet water is used as the produced water to permeate the membrane, and the rest part of the inlet water is used as the concentrated water to be discharged from the other side of the membrane element. The produced water permeating the membrane enters the membrane bag, flows inwards in a spiral shape along the water production grid, enters the central water collecting pipe through the holes on the central pipe, and flows out through the water production outlet.
In this embodiment, referring to fig. 1, the electrode foil corrosion wastewater treatment system further includes a PLC control cabinet 17, the PLC control cabinet 17 is electrically connected to the pretreatment system 1, the tubular microfiltration membrane system 2, the two-stage reverse osmosis system, and the cleaning system, respectively, and the PLC control cabinet is used for controlling the working sequence of the pretreatment system 1, the tubular microfiltration membrane system 2, the two-stage reverse osmosis system, and the cleaning system. Therefore, the whole electrode foil corrosion wastewater treatment system is operated automatically, and the filtering, backwashing, chemical dosing backwashing and reverse osmosis are monitored by the PLC control cabinet 17 without manual reference, so that the operation is convenient.
Specifically, all valves, pumps, the dosing structure 14, the monitoring device and the like in the embodiment are electrically connected with the PLC control cabinet 17, and the operation sequence of each structure is controlled by the PLC control cabinet 17 in the whole process.
The invention also provides a treatment process of the electrode foil corrosion wastewater, which comprises the following steps:
s10: adjusting the pH value of the corrosion wastewater through the pretreatment system 1 and decomposing pollutants in the corrosion wastewater to form a concentrated solution;
s20: filtering the suspended particles in the concentrated solution in the step S10 through a tubular microfiltration membrane system 2 to form filtrate;
s30: desalting the filtrate by a two-stage permeation system;
wherein, the working sequence of the steps S10, S20 and S30 is controlled by a PLC control cabinet, and the PLC control cabinet controls the cleaning system to clean the tubular microfiltration membrane system and the two-stage reverse osmosis system at specific time intervals.
In this embodiment, the electrode foil corrosion wastewater treatment process is used for treating the electrode foil corrosion wastewater, so that the effects of high effluent quality, stable effluent quality and long service life can be achieved.
Specifically, in this embodiment, step S10 includes the following steps:
s11: conveying the corrosion wastewater in the wastewater equalization tank 110 to the first reaction tank 120;
in this embodiment, since the corrosion wastewater is contained in the wastewater equalizing tank 110, the corrosion wastewater needs to be transported to the first reaction tank 120 by the lift pump.
S12: adjusting the PH of the wastewater in the first reaction tank 120;
s13: conveying the corrosion wastewater with the pH value adjusted in the first reaction tank 120 to the second reaction tank 130;
similarly, it is necessary to transfer the etching waste water from the first reaction tank 120 to the second reaction tank 130 by another lift pump.
S14: the PH of the wastewater in the second reaction tank 130 is adjusted, and a regulating agent is added to decompose the contaminants in the wastewater to form a concentrated solution.
Specifically, in this embodiment, step S20 includes the following steps:
s21: the concentrated solution in the second reaction tank 130 is conveyed to a concentration tank 3;
s22: the concentrated solution in the concentration tank 3 is conveyed to the tubular microfiltration membrane system 2 through a circulating pump 5 to be filtered by the tubular microfiltration membrane system 2;
wherein, at intervals, the PLC switch board 17 will control the first cleaning component 8 to wash the pair of tubular microfiltration membrane system 2, and when the concentrate concentration in the concentration tank 3 is too high, the PLC switch board 17 control will be carried the concentrate to silt collecting pit 6 and pressure filter 7 and collect the processing. Namely, the concentrated solution is subjected to solid-liquid separation by the sludge collecting tank 6, the separated liquid can be sent to the wastewater equalizing tank 110 for retreatment, the sludge in the sludge collecting tank 6 and the sludge in the concentrating tank 3 can be squeezed by the filter press 7 to form a recyclable filter cake, and the separated liquid can be sent to the wastewater equalizing tank 110 for retreatment.
In the present embodiment, step S30 includes the following steps:
s31: the filtrate is subjected to primary desalination and purification treatment through a primary reverse osmosis component 9;
s32: the filtrate is subjected to secondary desalination and purification treatment through a secondary reverse osmosis component 10.
In the present embodiment, step S31 includes the following steps: part of the concentrated water output by the first-stage reverse osmosis component 9 is conveyed back to the clear water collecting tank 4, and part of the concentrated water is discharged; the step S32 includes the following steps: and conveying the concentrated water output by the secondary reverse osmosis module 10 back to the clear water collecting tank 4. The concentrated water enters the clear water collecting tank 4 to form water circulation, so that the water in the first-stage reverse osmosis component 9 flows all the time, and the purpose of preventing the first-stage reverse osmosis component 9 from being blocked is achieved. When the concentration of the concentrated water output from the first-stage concentrated water end 93 is high, the concentrated water valve 19 is connected, the concentrated water is introduced into the concentrated water tank 18 for subsequent treatment, and the concentrated water with high concentration is prevented from entering the clear water collecting tank 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (12)
1. Electrode foil corrodes effluent disposal system, its characterized in that includes:
the pretreatment system is used for adjusting the pH value of the corrosion wastewater and decomposing pollutants in the corrosion wastewater to form a concentrated solution;
the tubular microfiltration membrane system is used for receiving the concentrated solution conveyed from the pretreatment system and filtering suspended particles in the concentrated solution;
the two-stage reverse osmosis system is connected with the output end of the tubular microfiltration membrane system and is used for desalting the filtered filtrate;
and the cleaning system is used for cleaning the tubular microfiltration membrane system and the two-stage reverse osmosis system at regular time.
2. The electrode foil corrosion wastewater treatment system of claim 1, further comprising a PLC control cabinet, wherein the PLC control cabinet is electrically connected with the pretreatment system, the tubular microfiltration membrane system, the two-stage reverse osmosis system and the cleaning system respectively, and is used for controlling the working sequence of the pretreatment system, the tubular microfiltration membrane system, the two-stage reverse osmosis system and the cleaning system.
3. The electrode foil corrosion wastewater treatment system of claim 1, wherein the pretreatment system comprises:
the waste water equalizing tank is used for containing corrosive waste water;
the first reaction tank is used for adjusting the pH value of the corrosion wastewater conveyed by the wastewater equalizing tank;
and the second reaction tank is used for finely adjusting the pH value of the corrosion wastewater conveyed by the first reaction tank and adding a medicament to decompose pollutants in the corrosion wastewater to form a concentrated solution.
4. The electrode foil corrosion wastewater treatment system according to claim 1, further comprising a concentration tank and a clean water collection tank;
the concentration tank is used for receiving the concentrated solution conveyed from the pretreatment system, the concentrated solution input end of the tubular microfiltration membrane system is used for collecting the concentrated solution conveyed from the concentration tank, the clear water collection tank is used for collecting the filtrate output from the filtrate output end of the tubular microfiltration membrane system, and the tubular microfiltration membrane system is also provided with a backflow end used for returning the concentrated solution remained in the tubular microfiltration membrane system to the concentration tank.
5. The electrode foil corrosion wastewater treatment system according to claim 4, wherein a sludge collecting tank is connected to the bottom of the concentrating tank for receiving the concentrated solution when the concentration of the concentrated solution in the concentrating tank is high, a filter press for pressing sludge in the sludge collecting tank into a filter cake is connected to the sludge collecting tank, the water outlet end of the filter press is connected to the wastewater equalizing tank, and the water outlet end of the sludge collecting tank is also connected to the wastewater equalizing tank.
6. The electrode foil corrosion wastewater treatment system of claim 4, wherein the cleaning system comprises a first cleaning assembly;
the first cleaning assembly includes:
the input end of the cleaning pipeline is connected with the filtrate output end of the tubular microfiltration membrane system, and the output end of the cleaning pipeline is connected with the concentrated solution input end of the tubular microfiltration membrane;
the cleaning pump is arranged in the cleaning pipeline and is used for reversely conveying the filtrate output by the tubular microfiltration membrane system to the concentrated solution input end of the tubular microfiltration membrane system;
the cleaning valve is arranged in the cleaning pipeline and used for controlling the on-off of the cleaning pipeline;
and the chemical tank is arranged in the cleaning pipeline and is used for adding chemical reagents into the cleaning pipeline at regular time to enhance the cleaning effect.
7. The electrode foil corrosion wastewater treatment system according to claim 4, wherein the two-stage reverse osmosis system comprises a first-stage reverse osmosis module and a second-stage reverse osmosis module arranged in sequence;
the tubular microfiltration membrane system comprises a plurality of tubular microfiltration membranes which are connected in series; the tubular microfiltration membrane is made of SIC materials.
8. The electrode foil corrosion wastewater treatment system of claim 7, wherein a cartridge filter for removing fine particles with turbidity higher than 1 degree is connected between the primary reverse osmosis assembly and the clean water collecting tank, and a dosing structure for adding a scale inhibitor into the filtrate is arranged on a water inlet pipe of the primary reverse osmosis assembly;
a first high-pressure pump is arranged between the cartridge filter and the first-stage reverse osmosis component, and a second high-pressure pump is arranged between the first-stage water production tank and the second-stage reverse osmosis component.
9. The electrode foil corrosion wastewater treatment system of claim 7, wherein the primary reverse osmosis module further has a primary concentrate end for outputting concentrate and being connectable to a concentrate tank or returning concentrate to the clean water collection tank;
the second-stage reverse osmosis component is also provided with a second-stage concentrated water end, and the second-stage concentrated water end is used for outputting concentrated water and can be connected with a concentrated water tank or reflows the concentrated water to the clear water collecting tank.
10. The electrode foil corrosion wastewater treatment process, characterized in that the electrode foil corrosion wastewater treatment is performed by the electrode foil corrosion wastewater treatment system according to any one of claims 1 to 9, comprising the steps of:
s10: adjusting the pH value of the corrosion wastewater through a pretreatment system and decomposing pollutants in the corrosion wastewater to form a concentrated solution;
s20: filtering the suspended particles of the concentrated solution in the step S10 through a tubular microfiltration membrane system to form filtrate;
s30: desalting the filtrate by a two-stage permeation system;
wherein, the working sequence of the steps S10, S20 and S30 is controlled by a PLC control cabinet, and the PLC control cabinet controls the cleaning system to clean the tubular microfiltration membrane system and the two-stage reverse osmosis system at specific time intervals.
11. The electrode foil corrosion wastewater treatment process according to claim 10, wherein the step S20 includes the steps of:
s21: conveying the concentrated solution to a concentration tank;
s22: conveying the concentrated solution in the concentration tank to a tubular microfiltration membrane system through a circulating pump so as to be filtered by the tubular microfiltration membrane system;
and at intervals, the PLC control cabinet controls the first cleaning component to clean the tubular microfiltration membrane system, and when the concentration of the concentrated solution in the concentration tank is too high, the PLC control cabinet controls the concentrated solution to be conveyed to a sludge collection tank and a filter press for collection treatment.
12. The electrode foil etching wastewater treatment process as set forth in claim 10, comprising the steps of, in step S31: part of the concentrated water output by the first-stage reverse osmosis module is conveyed back to the clear water collecting pool, and part of the concentrated water is discharged; the step S32 includes the following steps: and conveying the concentrated water output by the secondary reverse osmosis component back to the clear water collecting tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910808630.4A CN110862167A (en) | 2019-08-29 | 2019-08-29 | Electrode foil corrosion wastewater treatment system and treatment process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910808630.4A CN110862167A (en) | 2019-08-29 | 2019-08-29 | Electrode foil corrosion wastewater treatment system and treatment process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110862167A true CN110862167A (en) | 2020-03-06 |
Family
ID=69652680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910808630.4A Pending CN110862167A (en) | 2019-08-29 | 2019-08-29 | Electrode foil corrosion wastewater treatment system and treatment process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110862167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950140A (en) * | 2022-05-16 | 2022-08-30 | 东莞市月恒环保科技有限公司 | Tubular microfiltration membrane filtration system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320706A (en) * | 2011-07-08 | 2012-01-18 | 上海希沃环境科技有限公司 | System for deep recovery and treatment of coking wastewater biochemical effluent |
| CN102923876A (en) * | 2012-10-11 | 2013-02-13 | 上海瑞勇实业有限公司 | System for recovering heavy metals and recycling wastewater through treating metal wastewater by using tube type filter membrane method |
| CN105645641A (en) * | 2016-03-16 | 2016-06-08 | 李刚 | Method for treating wastewater in production of corrosion foil for aluminum electrolytic capacitor |
| CN107253777A (en) * | 2017-07-27 | 2017-10-17 | 周口师范学院 | A kind of electrode foil corrodes waste liquor recovery process |
| CN107324548A (en) * | 2017-08-24 | 2017-11-07 | 天津邦盛净化设备工程有限公司 | A kind of seawater filtering system |
| CN109336314A (en) * | 2018-12-06 | 2019-02-15 | 扬州宏远电子股份有限公司 | A kind of reclaiming system and its reuse method of etched foil cleaning waste water |
| CN110143710A (en) * | 2019-05-29 | 2019-08-20 | 四川石棉华瑞电子有限公司 | Formation foil production line Sewage treatment utilizes method |
| CN210796016U (en) * | 2019-08-29 | 2020-06-19 | 深圳中拓天达环境工程有限公司 | Electrode foil corrosion wastewater treatment system |
-
2019
- 2019-08-29 CN CN201910808630.4A patent/CN110862167A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320706A (en) * | 2011-07-08 | 2012-01-18 | 上海希沃环境科技有限公司 | System for deep recovery and treatment of coking wastewater biochemical effluent |
| CN102923876A (en) * | 2012-10-11 | 2013-02-13 | 上海瑞勇实业有限公司 | System for recovering heavy metals and recycling wastewater through treating metal wastewater by using tube type filter membrane method |
| CN105645641A (en) * | 2016-03-16 | 2016-06-08 | 李刚 | Method for treating wastewater in production of corrosion foil for aluminum electrolytic capacitor |
| CN107253777A (en) * | 2017-07-27 | 2017-10-17 | 周口师范学院 | A kind of electrode foil corrodes waste liquor recovery process |
| CN107324548A (en) * | 2017-08-24 | 2017-11-07 | 天津邦盛净化设备工程有限公司 | A kind of seawater filtering system |
| CN109336314A (en) * | 2018-12-06 | 2019-02-15 | 扬州宏远电子股份有限公司 | A kind of reclaiming system and its reuse method of etched foil cleaning waste water |
| CN110143710A (en) * | 2019-05-29 | 2019-08-20 | 四川石棉华瑞电子有限公司 | Formation foil production line Sewage treatment utilizes method |
| CN210796016U (en) * | 2019-08-29 | 2020-06-19 | 深圳中拓天达环境工程有限公司 | Electrode foil corrosion wastewater treatment system |
Non-Patent Citations (3)
| Title |
|---|
| 段谟华;王伟;: "含铝废水膜法深度处理研究", 环境保护与循环经济, vol. 35, no. 05, pages 54 - 58 * |
| 陈锁斌;: "电解电容器用电极箔厂家含酸废水处理方法综述", 新疆有色金属, vol. 35, no. 1, pages 1679 - 414 * |
| 高艳玲等: "城市水系统运营与管理", 中国建材工业出版社, pages: 201 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950140A (en) * | 2022-05-16 | 2022-08-30 | 东莞市月恒环保科技有限公司 | Tubular microfiltration membrane filtration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213012286U (en) | Membrane filtration and heavy metal-containing wastewater purification system | |
| CN201610402U (en) | Recycling and deep treatment device for electronic electroplating wastewater | |
| EP3950603B1 (en) | Drinking water purification system comprising a backwashable filter cartridge and a nanofiltration unit | |
| CN210796016U (en) | Electrode foil corrosion wastewater treatment system | |
| CN210796017U (en) | Electrode foil boron-containing cleaning wastewater treatment system | |
| CN110862167A (en) | Electrode foil corrosion wastewater treatment system and treatment process thereof | |
| CN214004228U (en) | Reverse osmosis water purification system for electroplating wastewater treatment | |
| CN202671334U (en) | Double-film method heavy metal waste water purification treatment reuse device | |
| CN210796018U (en) | Phosphorus-containing cleaning wastewater treatment system for electrode foil | |
| JP2011041907A (en) | Water treatment system | |
| CN212246590U (en) | Reverse osmosis water treatment system | |
| CN211004887U (en) | Waste incineration power plant waste water processing system | |
| JP4454922B2 (en) | Control method of filtration apparatus using hollow fiber type separation membrane | |
| JP3838689B2 (en) | Water treatment system | |
| CN110862168A (en) | Electrode foil phosphorus-containing cleaning wastewater treatment system and treatment process thereof | |
| CN111392930A (en) | Reverse osmosis water treatment system | |
| JP2005046762A (en) | Water treatment method and water treatment apparatus | |
| CN212954737U (en) | Landfill leachate MBR goes out water processing system | |
| JP3951373B2 (en) | Waste water treatment apparatus and method, water purification treatment facility | |
| CN215102732U (en) | Diamond sewage treatment filtering reactor | |
| CN214653998U (en) | Two-stage reverse osmosis water purifier | |
| JP2005046801A (en) | Water treatment method and apparatus therefor | |
| CN215250262U (en) | Industrial water system wetting system | |
| JP3218077B2 (en) | Surface water purification method and apparatus | |
| CN210286989U (en) | Reclaimed water recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200306 |