CN204643916U - A kind of standard zero polar distance electrolytic bath for water treatment - Google Patents
A kind of standard zero polar distance electrolytic bath for water treatment Download PDFInfo
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- CN204643916U CN204643916U CN201520325766.7U CN201520325766U CN204643916U CN 204643916 U CN204643916 U CN 204643916U CN 201520325766 U CN201520325766 U CN 201520325766U CN 204643916 U CN204643916 U CN 204643916U
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Abstract
The utility model belongs to technical field of electrochemistry, relates to a kind of standard zero polar distance electrolytic bath for water treatment.Be made up of more than one electrolyzer unit, primarily of electrolytic cell body and intercalation, the plural electrode assemblie in cell body is formed each electrolyzer unit; Described electrode assemblie is made up of porous cathode, diaphragm frame, barrier film and porous anode, and described diaphragm frame inside casing size is identical with diaphragm size, and described barrier film is electrical isolation, permeable porous fiber film.The utility model electrolyzer, because electrode pole span can be reduced to the thickness of porous-film, makes pole span to be less than 1mm, and porous-film after absorbing water simultaneously, and resistance is very low, and groove pressure is significantly reduced, and energy consumption sharply reduces.This electrolyzer, when same treatment amount, significantly can reduce facility investment, reduces plant area area.
Description
Technical field
The utility model belongs to technical field of electrochemistry, relates to a kind of electrochemical processing apparatus for water treatment, particularly relates to a kind of standard zero polar distance electrolytic bath for water treatment.
Background technology
Water pollution problems gets more and more people's extensive concerning at present.Trade effluent, percolate, sanitary sewage etc. have that toxicity is large, organic content is high, complicated component and the large feature of intractability.When now widely used these waste water of water technology process, sewage, its water outlet is difficult to reach discharging standards, or needs very high processing cost.
Electrocatalysis high-grade oxidized technology uses has the superpotential anode of high oxygen separated, and when electrolysis, organic pollutant is in the oxidized modification of anode surface or direct mineralising.Waste water after electrocatalysis high-grade oxidized technical finesse, both can with other technology coupling, can be used alone again.
At present, use the electrolyzer of this technology, ubiquity energy consumption be high, problem that treatment capacity is little.
Reducing one of approach of energy consumption is add inorganic salt, improves electrical conductivity of water, and then reduces groove pressure, reach the object reducing energy consumption, but the inorganic salt added add reagent cost, and improve the salinity of waste water, to subsequent disposal, particularly biochemical treatment causes and has a strong impact on.Another approach reducing energy consumption reduces pole span, but the reduction of pole span makes the usage quantity of pole plate increase, and adds the cost of investment of equipment.
The method improving treatment capacity increases electrolyzer quantity or improves single groove processing power.The former makes cost of investment significantly increase, and is unfavorable for actual use; The latter realizes on the basis not increasing cost of investment by suitable design of electrolysis cells.Improve single groove processing power, can quantity of polar plate be increased on the one hand, running current density can be improved on the other hand.Increase quantity of polar plate, face the problem that cost of investment increases equally, and improve current density and face groove and press through height, the problem that energy consumption increases.
Therefore, electrocatalysis high-grade oxidized electrolyzer reduces energy consumption, increases the key for the treatment of capacity is reduce groove pressure, raising current density.
The groove pressure of electrolyzer is directly proportional to solution resistance in electrolyzer and working current density.When working current density one timing, bath voltage is proportional to the waste water of the resistance of solution, particularly Low-salinity, and its specific conductivity is very low, resistance and Yin/Yang two interelectrode distance of electrolytic solution are proportional, so reducing interpole gap is the effective measure reducing solution resistance, reduce groove pressure.
Chinese patent CN 104176797 A, CN 103046067 A, CN 103103560 A, CN 202492585U, CN 202246892 U, CN 1083871 A etc., with the ion-exchange membrane of thickness less than 1mm, cathode and anode is separated, and three is compressed, make " zero pole span " electrolyzer, pole span can be decreased to the thickness of film, generally be used in chlorine industry at present.But in water treatment, above-mentioned " zero pole span " electrolyzer also cannot be suitable for, because ionic membrane can by foreign ion and Organic Material Blocking in sewage, ion-exchange capacity declines, and during operation, actual groove voltage rise is high, cannot reduce energy consumption.
Utility model content
In order to overcome the deficiencies in the prior art, technical problem to be solved in the utility model is to provide standard zero polar distance electrolytic bath for water treatment that a kind of operation energy consumption is low, treatment capacity is large.
The utility model is achieved through the following technical solutions:
For standard zero polar distance electrolytic bath for water treatment, this electrolyzer is made up of more than one electrolyzer unit, and primarily of electrolytic cell body and intercalation, the plural electrode assemblie in cell body is formed each electrolyzer unit;
Described electrolytic cell body is made up of side plate, base plate and end plate, fix on the top of side plate outer wall and receiving tank, the inwall of side plate has stripe board, side plate inwall also has support bar be positioned at below stripe board, the groove between stripe board and support bar be the fixing electrode assemblie inserted jointly; The position of described side plate on stripe board also has overflow weir to be communicated with receiving tank; Also have water inlet pipe to pass at biside plate in the upper/lower positions of support bar, described water inlet pipe has equally distributed prosopyle; There is rising pipe bottom described receiving tank, described electrolyzer base plate is provided with blow-off pipe;
Described electrode assemblie is made up of porous cathode, diaphragm frame, barrier film and porous anode, and described diaphragm frame inside casing size is identical with diaphragm size, and described barrier film is electrical isolation, permeable porous fiber film.
Described electrolyzer side plate upper end is provided with overflow weir, and lower end is provided with water inlet pipe, and on electrolyzer side plate, water inlet pipe is positioned at below support bar.
Be provided with receiving tank outside described electrolyzer side plate, be provided with rising pipe bottom receiving tank, receiving tank upper end is concordant with electrolyzer side plate upper end, is positioned at the below in electrolyzer lateral plate overflowing hole bottom receiving tank.
Described stripe board is positioned at electrolyzer side plate interior sides, and is fixed together with electrolyzer side plate.Form groove between two adjacent stripe board, this groove is electrode assemblie and inserts groove, and stripe board lower end is support bar, and support bar is fixed together with electrolyzer side plate.The number of stripe board is determined according to the electrode assemblie quantity in each electrolyzer unit.As inserted two electrode assemblies, need three pieces of stripe board.
The water inlet pipe of described electrolyzer side plate bottom, is connected together in electrolyzer, and its pipeline section being positioned at electrolyzer is evenly distributed with prosopyle.
Described receiving tank, electrolyzer side plate, stripe board, support bar, base plate and end-plate material can select polyvinyl chloride, polyethylene, polypropylene, synthetic glass, ABS or nylon material, optimization polypropylene material.
Described electrode assemblie is made up of porous cathode, diaphragm frame, barrier film and porous anode.
Described porous cathode is expanded metal, preferable alloy stretching nets, hole dimension 2 × 2mm ~ 10 × 20mm, preferably 5 × 12mm, and porous cathode material can select Fe, Co, Ni, Cu, Pb and alloy thereof or stainless material, preferred stainless material.Described porous cathode upper end is provided with cathode connection terminal.
Described diaphragm frame is square frame-shaped structure, is made up of fluid-tight insulating material, and material can select polyvinyl chloride, polyethylene, polypropylene, synthetic glass, ABS or nylon material, optimization polypropylene material.
Described barrier film is electrical isolation, permeable porous fiber film, and diaphragm material can select PP, PE, glass fibre or microporous hydrophilic PTFE film, preferred PP; Membrane thicknesses 0.5-3mm, preferred 1-2mm; Aperture 1-500 μm, preferably 50 μm; Its shape size is identical with dividing plate inside casing shape size of becoming attached to.
Described porous anode is POROUS TITANIUM PLATE, preferred titanium stretching nets, hole dimension 2 × 2mm ~ 10 × 20mm, preferably 5 × 12mm.POROUS TITANIUM PLATE surface-coated has metal oxide catalyst layer, and metal oxide catalyst can select PbO
2, SnO
2, Sb
2o
3, RuO
2, IrO
2or multi-element coating metal oxide, preferred PbO
2.Above-mentioned meshed anode upper end is provided with anode connection terminal.
Sequentially above-mentioned porous cathode, diaphragm frame, barrier film and porous anode are forced together again, barrier film is placed in diaphragm frame inside casing, namely forms an electrode assemblie.In the groove of electrode assemblie intercalation between aforementioned electrolyzer stripe board.
Electrode assemblie circuit in said units electrolyzer takes parallel way to connect, and is connected in parallel respectively by the cathode connection terminal of each electrode assemblie and anode connection terminal, and when multiple-unit electrolyzer combines, its circuit adopts series system.
The utility model can reach following beneficial effect:
The utility model electrolyzer, because electrode pole span can be reduced to the thickness of porous-film, makes pole span to be less than 1mm, and porous-film after absorbing water simultaneously, and resistance is very low, and groove pressure is significantly reduced, and energy consumption sharply reduces.Meanwhile, this electrolyzer in equal groove pressure, namely under same consumption energy, can improve current density, improves treatment capacity.In addition, this electrolyzer, when same treatment amount, significantly can reduce facility investment, reduces plant area area.
Accompanying drawing explanation
Fig. 1: accurate zero polar distance electrolytic bath structural representation.
1-end plate, 2-blow-off pipe, 3-base plate, 4-stripe board, 5-side plate, 6-rising pipe, 7-support bar, 8-receiving tank, 9-overflow weir, 10-prosopyle, 11-water inlet pipe, 12-electrode assemblie in Fig. 1
Fig. 2: electrode assemblie schematic diagram.
121-porous cathode, 122-cathode connection terminal, 123-diaphragm frame, 124-barrier film, 125-porous anode, 126-anode connection terminal in Fig. 2
The uv-visible absorption spectra of metronidazole waste water before and after electrolysis in Fig. 3 embodiment 2.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, a kind of standard zero polar distance electrolytic bath for water treatment of the present utility model is further described.
As shown in Figure 1, a kind of standard zero polar distance electrolytic bath for water treatment, this electrolyzer is made up of more than one electrolyzer unit, and primarily of electrolytic cell body and intercalation, the plural electrode assemblie in cell body is formed each electrolyzer unit;
Described electrolytic cell body is made up of side plate 5, base plate 3 and end plate 1, top and the receiving tank 8 of side plate 5 outer wall are fixed, the inwall of side plate 5 there is stripe board 4, side plate inwall also has support bar 7 be positioned at below stripe board 4, the groove between stripe board 4 and support bar 7 be the fixing electrode assemblie 12 inserted jointly; The described position of side plate 5 on stripe board 4 also has overflow weir 9 to be communicated with receiving tank 8; Also have water inlet pipe 11 to pass at biside plate 5 in the upper/lower positions of support bar 7, described water inlet pipe 11 is evenly distributed with prosopyle 10; There is rising pipe 6 bottom described receiving tank 8, described electrolyzer base plate 3 is provided with blow-off pipe 2;
Described electrode assemblie 12 is made up of porous cathode 121, diaphragm frame 123, barrier film 124 and porous anode 126, and described diaphragm frame inside casing size is identical with diaphragm size, and described barrier film is electrical isolation, permeable porous fiber film.
Before and after above-mentioned electrolyzer unit, side plate is provided with receiving tank, bottom receiving tank, mid-way is provided with a rising pipe, and this rising pipe is connected with the water inlet pipe of next electrolyzer unit.
Above-mentioned base plate is provided with a blow-off pipe, and this blow-off pipe is positioned at the mid-way of the base plate of electrolyzer unit.
As shown in Figure 1, when electrolyzer has two or more electrolyzer unit, one piece of end plate can be share in electrolyzer junction, and between each unit, circuit takes series system to be connected together.
Cathode connection terminal and the anode connection terminal of each electrode assemblie in electrolyzer unit 1 are connected in parallel respectively.
Similarly, cathode connection terminal and the anode connection terminal of each electrode assemblie in above-mentioned electrolyzer unit 2 are connected in parallel respectively.
The cathode connection terminal be connected in parallel in above-mentioned electrolyzer unit 1 and electrolyzer unit 2 and anode connection terminal series-shunt link together.Finally, this series circuit is connected with pulse dc power.
Pending waste water enters electrolyzer unit 1 by the water inlet pipe on electrolyzer side plate, electrolysis is carried out in electrolyzer unit 1, the overflow weir of electrolytic solution after electrolysis through electrolyzer side plate upper end flows in receiving tank, electrolytic solution in receiving tank is by the rising pipe bottom receiving tank, electrolyzer unit 2 is entered again by the water inlet pipe on the side plate of electrolyzer unit 2, electrolysis is continued in electrolyzer unit 2, order enters the 3rd, the 4th and subsequent baths unit, until pending waste water meets the requirements of emission standard again.
Below in conjunction with specific embodiment, the utility model is further described.
Embodiment 1: the process of certain garbage stacking yard percolate
Adopt standard zero polar distance electrolytic bath of a unit, electrolyzer is containing 2 electrode assemblies.The cathode connection terminal of 2 electrode assemblies and anode connection terminal are connected in parallel respectively.Finally, the cathode connection terminal be connected in parallel is connected with pulse dc power with anode connection terminal.
For the process of the percolate of certain garbage stacking yard, under same current density, the groove pressure data of accurate zero polar distance electrolytic bath, traditional electrolyte groove and ion-exchange membrane electrolyzer single-stage (containing 1 negative electrode and 1 anode) groove are as table 1.
Table 1:
Get the former water of 10L percolate, do electrolysis, by COD by 2800mgL with accurate zero polar distance electrolytic bath and traditional electrolyte groove
-1be down to 2000mgL
-1near.Effective electrolysis area of two kinds of electrolyzers is 400cm
2; Accurate zero polar distance electrolytic bath current density opens 60mA, and electric current is 24A, and groove pressure is 5.8V; The current density of traditional electrolyte groove opens 20mA, and electric current is 8A, groove pressure 8.0V.COD is down to ~ 2000mgL
-1time, accurate zero polar distance electrolytic bath used time 50min, traditional electrolyte groove used time 145min, related data is as shown in table 2.
Table 2:
| Accurate zero polar distance electrolytic bath | Traditional electrolyte groove | Evaluate | |
| Initial COD/mgL -1 | 2800 | 2800 | |
| COD/mgL after process -1 | 2020 | 2050 | |
| Electric current/A | 24 | 8 | Improve 300% |
| Groove pressure/V | 5.8 | 8.0 | Reduce by 27.5% |
| Treatment time/minL -1 | 5 | 14.5 | Shorten 65.5% |
| Energy consumption/kWht -1 | 11.6 | 15.5 | Reduce by 25.2% |
By the COD process of equal-volume waste water to par, relative to traditional electrolyte groove, the treatment time can be shortened 65.5% by accurate zero polar distance electrolytic bath, and namely unit time treatment capacity improves 2.9 times, and energy consumption reduces by 25.5% simultaneously.
Embodiment 2: certain company's metronidazole waste water modification
Adopt standard zero polar distance electrolytic bath of a unit, electrolyzer is containing 4 electrode assemblies.The cathode connection terminal of 4 electrode assemblies and anode connection terminal are connected in parallel respectively.Finally, the cathode connection terminal be connected in parallel is connected with pulse dc power with anode connection terminal.
Be modified as example with certain company's metronidazole waste water, under same current density, the groove pressure data of accurate zero polar distance electrolytic bath, traditional electrolyte groove and ion-exchange membrane electrolyzer single-stage (containing 1 negative electrode and 1 anode) groove are as table 3.
Table 3:
Get 10L metronidazole waste water, do electrolysis, by metronidazole present by 32mgL with accurate zero polar distance electrolytic bath and traditional electrolyte groove
-1be down to 5mgL
-1near.Effective electrolysis area of two kinds of electrolyzers is 400cm
2; Accurate zero polar distance electrolytic bath current density opens 40mA, and electric current is 16A, and groove pressure is 5.3V; The current density of traditional electrolyte groove opens 10mA, and electric current is 4A, groove pressure 6.2V.Before and after electrolysis, the uv-visible absorption spectra of metronidazole waste water as shown in Figure 3.
Through two kinds of electrolytic tank electrolysis, metronidazole present can be down to 4 ~ 5mgL
-1.Accurate zero polar distance electrolytic bath used time 160min, traditional electrolyte groove used time 630min, related data is as shown in table 4.
Table 4:
The metronidazole present of equal-volume waste water is down to par, and relative to traditional electrolyte groove, the treatment time can be shortened 73.8% by accurate zero polar distance electrolytic bath, and namely unit time treatment capacity improves 3.8 times, and energy consumption reduces by 10.3% simultaneously.
Claims (8)
1. for standard zero polar distance electrolytic bath for water treatment, be made up of more than one electrolyzer unit, primarily of electrolytic cell body and intercalation, the plural electrode assemblie in cell body is formed each electrolyzer unit, it is characterized in that,
Described electrolytic cell body is made up of side plate (5), base plate (3) and end plate (1), the top of side plate (5) outer wall and receiving tank (8) are fixed, the inwall of side plate (5) has stripe board (4), side plate (5) inwall also has support bar (7) be positioned at stripe board (4) below, the groove between stripe board (4) and support bar (7) be the fixing electrode assemblie (12) inserted jointly; The position of described side plate (5) on stripe board (4) also has overflow weir (9) to be communicated with receiving tank (8); Also have water inlet pipe (11) to pass at biside plate (5) in the upper/lower positions of support bar (7), described water inlet pipe (11) is evenly distributed with prosopyle (10); Rising pipe (6) is arranged at described receiving tank (8) bottom, and described electrolyzer base plate (3) is provided with blow-off pipe (2);
Described electrode assemblie (12) is made up of porous cathode (121), diaphragm frame (123), barrier film (124) and porous anode (126), described diaphragm frame (123) inside casing size and barrier film (124) measure-alike, described barrier film (124) is electrical isolation, permeable porous fiber film.
2. accurate zero polar distance electrolytic bath according to claim 1, it is characterized in that, the side plate of described receiving tank, electrolytic cell body, stripe board, support bar, base plate and end-plate material are polyvinyl chloride, polyethylene, polypropylene, synthetic glass, ABS or nylon material.
3. accurate zero polar distance electrolytic bath according to claim 1, is characterized in that, described porous cathode is expanded metal, hole dimension 2 × 2mm ~ 10 × 20mm.
4. accurate zero polar distance electrolytic bath according to claim 3, it is characterized in that, porous cathode (121) selects Fe, Co, Ni, Cu, Pb and alloy or stainless material thereof to make, and is provided with cathode connection terminal (122) in mesh cathode upper end.
5. accurate zero polar distance electrolytic bath according to claim 1, is characterized in that, described diaphragm frame (123) is square frame-shaped structure, is made up of polyvinyl chloride, polyethylene, polypropylene, synthetic glass, ABS or nylon material.
6. accurate zero polar distance electrolytic bath according to claim 1, is characterized in that, described diaphragm material is PP, PE, glass fibre or microporous hydrophilic PTFE film, membrane thicknesses 0.5-3mm, aperture 1-500 μm.
7. accurate zero polar distance electrolytic bath according to claim 1, is characterized in that, described porous anode (125) is POROUS TITANIUM PLATE, hole dimension 2 × 2mm ~ 10 × 20mm.
8. accurate zero polar distance electrolytic bath according to claim 7, is characterized in that, described porous anode (125) POROUS TITANIUM PLATE surface-coated has metal oxide catalyst layer, and metal oxide catalyst selects PbO
2, SnO
2, Sb
2o
3, RuO
2, IrO
2or multi-element coating metal oxide, anode connection terminal (126) is provided with in meshed anode upper end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520325766.7U CN204643916U (en) | 2015-05-19 | 2015-05-19 | A kind of standard zero polar distance electrolytic bath for water treatment |
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| CN201520325766.7U CN204643916U (en) | 2015-05-19 | 2015-05-19 | A kind of standard zero polar distance electrolytic bath for water treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817137A (en) * | 2015-05-19 | 2015-08-05 | 武汉威蒙环保科技有限公司 | Quasi-zero-polar-distance electrolytic tank for water treatment |
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- 2015-05-19 CN CN201520325766.7U patent/CN204643916U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817137A (en) * | 2015-05-19 | 2015-08-05 | 武汉威蒙环保科技有限公司 | Quasi-zero-polar-distance electrolytic tank for water treatment |
| CN104817137B (en) * | 2015-05-19 | 2016-11-23 | 武汉威蒙环保科技有限公司 | A kind of standard zero polar distance electrolytic bath processed for water |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150916 Effective date of abandoning: 20161012 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |