CN109809532A - A kind of sewage treatment electrochemical reactor of super low-power consumption - Google Patents
A kind of sewage treatment electrochemical reactor of super low-power consumption Download PDFInfo
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- CN109809532A CN109809532A CN201910186388.1A CN201910186388A CN109809532A CN 109809532 A CN109809532 A CN 109809532A CN 201910186388 A CN201910186388 A CN 201910186388A CN 109809532 A CN109809532 A CN 109809532A
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- electrode
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Abstract
The invention belongs to industrial waste water treatments.Currently, the processing method for industrial wastewater mainly still uses physical sedimentation and biochemical degradation etc..Although electrochemical advanced oxidation method is considered as environmentally protective sewage disposal technology, cannot be widely applied in the improvement of various industrial wastewaters since the energy consumption of electrochemical advanced oxidation method is high.For problem of the prior art, the invention discloses a kind of sewage treatment electrochemical reactors of super low-power consumption.Reactor includes positive electrode, negative electrode, insulating film, elctro-catalyst titanium net coating, water inlet insulation shell, water outlet insulation shell, gasket, hydraulic gage and valve.Insulating film, elctro-catalyst titanium net coating are staggeredly arranged successively, and electrode assembly is formed together with the anodic-cathodic of the left and right sides.Electrode assembly is linked by rubber pad with one side seal of water outlet shell, and water inlet shell is linked by rubber pad and the water outlet housing seal with electrode assembly side, is equipped with hydraulic gage in outlet housing side, there are placement valve in inlet and outlet two sides respectively.The configuration of the present invention is simple can be removed COD, ammonia nitrogen and total nitrogen degradation treatment to industrial wastewater, have many advantages, such as super low-power consumption.
Description
Technical field
The present invention relates to electro-chemical water process fields, and in particular to a kind of sewage treatment electrochemistry with super low-power consumption is anti-
Answer device.
Background technique
With the increasingly attention that Environmental is protected, the discharge standard of waste water control is continuously improved.This means that
It handles industrial wastewater using processes such as conventional biochemical, physical sedimentations to be difficult to reach discharge standard, especially to difficult biology
Degradation organic sewage, such as Fine Chemistry Wastewater, Wastewater in Biologic Pharmacy, petroleum wastewater, coking of coal waste water etc. can not be carried out to dirt
Organic matter, NH3 degradation and qualified discharge in water.Electrochemical advanced oxidation technique is considered as a kind of place of high effective green environmentally friendly
Reason technology.Catalysed oxidn is generated by electrochemical reaction, it not only can be directly the direct oxygen of the organic matter of bio-refractory
It turns to carbon dioxide and water and is removed, the ammonia nitrogen direct oxidation in waste water directly can also be become into nitrogen and water is gone
It removes.Many is developed for administering the electrochemical reactor of Industrial Wastewater Treatment, such as patent (Authorization Notice No.: CN
105420752 B) disclose a kind of filled type oriented flow electrochemical reactor.Nevertheless, at electrochemical advanced oxidation method
The technology of reason trade effluent can't be used widely.This is because the cost phase with the treatment process such as traditional biochemical degradation
Than the cost of advanced electrochemical oxidation process is still very expensive.Expensive cost is mainly the energy by electrochemical reactor
Caused by consumption is high.And energy consumption height is primarily due to electrochemical reactor and designs not reasonable, tank voltage height, current efficiency is low.
Currently, the structure of electrochemical reactor also mainly uses traditional undivided cell mode, although can add into electrolytic cell
Some charcoals, the microparticles such as iron enhance polarization effect, form three-diemsnional electrode, but tank voltage is still very high, especially for salt
Divide very low waste water, tank voltage may be up to 10V or more.
Summary of the invention
It is high that the purpose of the present invention is to solve above-mentioned electrochemical cell voltages, and the technical problems such as energy consumption is high provide one kind
Structure is simple, investment cost and operating cost is low, electrolytic efficiency is high, can remove the sewage treatment of organic matter, ammonia nitrogen and total nitrogen
Electrochemical reactor.
A kind of sewage treatment electrochemical reactor of super low-power consumption, including water inlet insulation shell, electrode assembly, water outlet
Insulation shell, gasket, hydraulic gage and valve, the electrode assembly sealing are placed in exhausted by water inlet insulation shell and water outlet
In the space that edge shell is sealed, the electrode assembly is made of positive electrode, isolation module and negative electrode, and the positive electrode is set
In the side of isolation module, the negative electrode is placed in the other side of isolation module, and the isolation module is by insulating film and electro-catalysis
Agent titanium net coating is successively staggered composition, and the left side of isolation module and the right side are all insulating films, the water outlet insulation
The inner hollow of shell, the right side are provided with outlet pipe, and from left to right successively placement hydraulic gage and valve, the left side are on water pipe
Sealing plane is linked by the negative electrode sealing of gasket and the electrode assembly, in the water inlet insulation shell inside
Sky, the left side is equipped with water inlet pipe, and valve is disposed on water inlet pipe, and the right side is sealing plane, is insulated by gasket and water outlet
The link of the shell left side.
The positive electricity is extremely coated with the porous electrode of electrocatalytic properties, is also possible to reticular structure electrode.
The oxygen evolution potential of the positive electrode is in 1.5V or more, preferably 2.5V or more (reference mark hydrogen electrode potential).
The negative electricity extremely stainless steel, titanium, one kind of copper and graphite plate, be porous or reticular structure, edge be equipped with
The threaded hole of gasket and the sealing of water outlet left plane.
The thickness of the isolation module is at 400 microns hereinafter, it is preferred that 300 microns or less.
It is 2 millimeters of holes below that the insulating film, which is with equally distributed aperture, thickness be 100 microns with
Under.
The elctro-catalyst titanium net coating is that single side is coated with tin oxide, ruthenium-oxide, yttrium oxide and its alloyed oxide
Any one of coating, 200 microns of thickness or less.
Spacing between the positive electrode and negative electrode is 400 microns hereinafter, it is preferred that 300 microns or less.
The gasket is made of plastics or rubber insulation material.
The water inlet insulation shell is that polytetrafluoroethylene (PTFE) or plastic material are made.
The shape of the constituent element of the sewage treatment electrochemical reactor is round, circular ring shape or all geometry such as rectangular
Shape.
The present invention is implemented as follows: the valve that water inlet goes out is first turned on, so that industrial wastewater enters water inlet insulation
Shell space, then drawing-in is crossed by positive electrode, electrode assembly composed by isolation module and negative electrode, enters water outlet insulation
Shell space after waiting the hydraulic pressure inside this electrochemical reactor to rise to certain pressure, opens outlet valve, and simultaneously
Be electrolysed, complete in industrial wastewater organic matter and ammonia nitrogen degrade.
The utility model has the advantages that
The present invention uses with a thickness of micron-sized isolation module, and the spacing controlled between negative electrode and positive electrode is grown in the micron-scale
It spends in range, largely reduces the slot electricity of electrochemical reactor；Pass through the electro-catalysis titanium net coating in isolation module
Polarization, further improves the organic matter in electrochemical oxidation Decomposition Wastewater, the efficiency of ammonia nitrogen and total nitrogen is greatly reduced
The tank voltage of electrochemical reactor, improves the current efficiency of electrochemical reactor, to reduce the oxygen of electrochemical reactor
Change and decomposes industrial wastewater organic matter, the energy consumption of ammonia nitrogen and total nitrogen.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention
Fig. 2 is the structural schematic diagram of electrode assembly part of the present invention.
1 is water outlet insulation shell, and 2 be positive electrode, and 3 be negative electrode, and 4 be water inlet insulation shell, and 5 be isolation module,
501 be the insulating film in isolation module, and 502 be the elctro-catalyst titanium net coating in isolation module, and 6 be gasket, and 7 be hydraulic pressure
Meter, 8 be valve, and 9 be water inlet pipe, and 10 be outlet pipe.
Specific embodiment
Technical principle of the invention is constructing intermediate micron-sized intermediate isolating module, it is ensured that positive electrode and negative electrode it
Between spacing at 400 microns hereinafter, and the electro-catalysis titanium net coating in isolation module can increase electrolysis water polarization it is strong
Degree, in the case where being passed through high current, the tank voltage of electrochemical reactor is extremely low, generates a large amount of hydroxyl radical free radical, active oxygen
Equal oxidizing species, and the reactor realizes confined reaction space, can be electrochemically reacted under high pressure, to make
It obtains current efficiency to be greatly improved, energy consumption sharp fall.
Below in conjunction with the principle of the invention and feature are described in conjunction with the accompanying drawings and embodiments, illustrated embodiment is served only for solving
The present invention is released, is not limited the scope of the invention.
Embodiment 1:
Fig. 1 is the electrochemical reactor schematic diagram of super low-power consumption of the present invention.Including water outlet insulation shell 1, positive electrode 2, negative electricity
Pole 3, water inlet insulation shell 4, isolation module 5, seal washer 6, hydraulic gage 7, valve 8, water inlet pipe 9, outlet pipe 10.Select PP
Material is processed into water outlet insulation shell 1 and water inlet insulation shell 4, and positive electrode selection has the diamond of oxygen evolution potential
Film titanium net electrode (oxygen evolution potential 2.7V, reference mark hydrogen electrode potential), mesh 5mm, negative electrode select 304 stainless steels
Plate, the hole for being 4mm with equally distributed size on plate.Insulating film in isolation module selects 300 mesh polytetrafluoroethylene (PTFE) nets, line
Diameter is 0.05mm, and the thickness of nethike embrane is less than 0.1mm, and the electro-catalysis titanium net coating selection doped stannum oxide titanium net in isolation module applies
Layer, with a thickness of 0.2mm.One piece of doped stannum oxide titanium net painting is placed in the insulation net of two blocks of polytetrafluoroethylene (PTFE), thickness is formed
For 400 microns of isolation module, diamond titanium net electrode and stainless steel cathode are then being placed in isolation module two sides, formed
Cathode is sealed by the PP shell of rubber gasket and water outlet and is linked by electrode assembly, and water outlet PP shell passes through rubber
Sealing ring is linked with water inlet PP housing seal, then water pipe and valve, water outlet PP shell are installed on the left of water inlet PP shell
Right side is installed by water pipe, hydraulic gage and valve.Water inlet valve is opened, by phenolic waste water (the COD 4000mg/ containing high concentration
L it) is filled in electrochemical reactor, when the registration of hydraulic gage is equal to two atmospheric pressure, is passed through current density to electrode assembly
300A/m2Electric current be electrolysed, then turn on water outlet valve, after electrolysis 1 hour, waste water COD be down to 500mg/L with
Under, for energy consumption in about 10kwh/kgCOD, energy consumption is about a quarter of Conventional electrochemical reactor.
Embodiment 2:
Fig. 1 is the electrochemical reactor schematic diagram of super low-power consumption of the present invention.Including water outlet insulation shell 1, positive electrode 2, negative electricity
Pole 3, water inlet insulation shell 4, isolation module 5, seal washer 6, hydraulic gage 7, valve 8, water inlet pipe 9, outlet pipe 10.Select PP
Material is processed into water outlet insulation shell 1 and water inlet insulation shell 4, and positive electrode selection has the diamond of oxygen evolution potential
Film titanium net electrode (oxygen evolution potential 2.7V, reference mark hydrogen electrode potential), mesh 5mm, negative electrode select copper sheet, have on plate
Having equally distributed size is the hole of 4mm.Insulating film in isolation module selects 300 mesh polytetrafluoroethylene (PTFE) nets, and line footpath is
0.05mm, the thickness of nethike embrane are less than 0.1mm, and the electro-catalysis titanium net coating in isolation module selects doped stannum oxide titanium net coating,
With a thickness of 0.2mm.The painting of one piece of doped stannum oxide titanium net is placed in the insulation net of two blocks of polytetrafluoroethylene (PTFE), formed with a thickness of
Then diamond titanium net electrode and stainless steel cathode are being placed in isolation module two sides, are forming electricity by 400 microns of isolation module
Cathode is sealed by the PP shell of rubber gasket and water outlet and is linked by pole component, and water outlet PP shell is close by rubber
Seal is linked with water inlet PP housing seal, then water pipe and valve are installed on the left of water inlet PP shell, and water outlet PP shell is right
Side is installed by water pipe, hydraulic gage and valve.The valve for opening water inlet, by ammonia nitrogen waste water (the NH3 3000mg/ containing high concentration
L or more) it is filled in electrochemical reactor, when the registration of hydraulic gage is equal to 3 atmospheric pressure, current density is passed through to electrode assembly
500A/cm2Electric current be electrolysed, then turn on water outlet valve, after electrolysis 2 hours, ammonia nitrogen in waste water concentration is down to 20mg/
L is hereinafter, energy consumption is about 5kwh/kgNH3, and compared to Conventional electrochemical reactor, energy consumption is about three points of Conventional electrochemical reactor
One of.
Embodiment 3:
Fig. 1 is the electrochemical reactor schematic diagram of super low-power consumption of the present invention.Including water outlet insulation shell 1, positive electrode 2, negative electricity
Pole 3, water inlet insulation shell 4, isolation module 5, seal washer 6, hydraulic gage 7, valve 8, water inlet pipe 9, outlet pipe 10.Select PP
Material is processed into water outlet insulation shell 1 and water inlet insulation shell 4, iridium tantalum titanium net electrode (analysis that positive electrode selection has
Oxygen current potential is about 1.5V, reference mark hydrogen electrode potential), mesh 6mm, negative electrode selects 304 stainless steel plates, has on plate uniform
The size of distribution is the hole of 4mm.Insulating film in isolation module selects 200 mesh polytetrafluoroethylene (PTFE) nets, line footpath 0.01mm, nethike embrane
Thickness be less than 0.05mm, the electro-catalysis titanium net coating in isolation module selects doped stannum oxide titanium net coating, with a thickness of
0.1mm.One piece of doped stannum oxide titanium net painting is placed in the insulation net of two blocks of polytetrafluoroethylene (PTFE), is formed micro- with a thickness of about 220
Then diamond titanium net electrode and stainless steel cathode are being placed in isolation module two sides, are forming electrode group by the isolation module of rice
Cathode is sealed by the PP shell of rubber gasket and water outlet and is linked by part, and water outlet PP shell passes through rubber seal
It is linked with water inlet PP housing seal, then water pipe and valve is installed on the left of water inlet PP shell, peace on the right side of water outlet PP shell
Fill water pipe, hydraulic gage and valve.Water inlet valve is opened, it is anti-that the benzene class waste water that COD is about 1000mg/L is filled with electrochemistry
It answers in device, when the registration of hydraulic gage is equal to 4 atmospheric pressure, is passed through current density 400A/cm to electrode assembly2Electric current carry out
Electrolysis then turns on water outlet valve, and after electrolysis 2 hours, COD is down to 300mg/L hereinafter, energy consumption about 15kwh/kgCOD, phase
Than Conventional electrochemical reactor, energy consumption is about 2/5ths of Conventional electrochemical reactor.
It is understood that for those of ordinary skill in the art, can do in accordance with the technical idea of the present invention
Various other changes and modifications out, and all these changes and deformation all should belong to the protection model of the claims in the present invention
It encloses.
Claims (7)
1. a kind of sewage treatment electrochemical reactor of super low-power consumption, which is characterized in that including water inlet insulation shell, electrode group
Part, water outlet insulation shell, gasket, hydraulic gage and valve, the electrode assembly is by positive electrode, isolation module and negative electrode
Composition, the positive electrode are placed in the side of isolation module, and the negative electrode is placed in the other side of isolation module, the isolation module
It is successively staggered and is formed with elctro-catalyst titanium net coating by insulating film, and the left side of isolation module and the right side are all insulation
Film, the inner hollow of the water outlet insulation shell, the right side is provided with outlet pipe, and water is from left to right successively disposed on water pipe
Pressure meter and valve, the left side are sealing plane, are linked by the negative electrode sealing of gasket and the electrode assembly, the water inlet
Mouth insulation shell inner hollow, the left side is equipped with water inlet pipe, and valve is disposed on water inlet pipe, and the right side is sealing plane, by close
Packing is linked with the water outlet insulation shell left side.
2. the sewage treatment electrochemical reactor of super low-power consumption according to claim 1, it is characterised in that the positive electrode
Spacing between negative electrode is 400 microns or less.
3. the sewage treatment electrochemical reactor of super low-power consumption according to claim 1, it is characterised in that positive electrode and yin
There is one with a thickness of micron-sized partition module, with a thickness of 400 microns or less between electrode.
4. separating module according to claim 3, it is characterised in that include between insulating film single side be coated with electricity urge property
Catalyst titanium net coating.
5. according to claim 4 elctro-catalyst titanium net coating, it is characterised in that elctro-catalyst titanium net coating is tin oxide, oxygen
Change ruthenium, any one of yttrium oxide and its alloyed oxide coating, 200 microns of elctro-catalyst titanium net coating layer thickness or less.
6. the sewage treatment electrochemical reactor of super low-power consumption according to claim 1, it is characterised in that positive electricity extremely plates tool
There is the coated electrode of electrocatalysis material, oxygen evolution potential is at 1.5V or more (reference mark hydrogen electrode potential).
7. the sewage treatment electrochemical reactor of super low-power consumption according to claim 1, it is characterised in that positive electricity extremely plates tool
There are the coated electrode of electrocatalysis material, 2.7 V or more of oxygen evolution potential (reference mark hydrogen electrode potential).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186388.1A CN109809532A (en) | 2019-03-13 | 2019-03-13 | A kind of sewage treatment electrochemical reactor of super low-power consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186388.1A CN109809532A (en) | 2019-03-13 | 2019-03-13 | A kind of sewage treatment electrochemical reactor of super low-power consumption |
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| CN109809532A true CN109809532A (en) | 2019-05-28 |
Family
ID=66608831
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| CN201910186388.1A Pending CN109809532A (en) | 2019-03-13 | 2019-03-13 | A kind of sewage treatment electrochemical reactor of super low-power consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479318A (en) * | 2019-09-12 | 2021-03-12 | 华东理工大学 | Micro-interpolar membraneless electrochemical water treatment method |
| CN116081781A (en) * | 2023-04-06 | 2023-05-09 | 天津市环境保护技术开发中心设计所有限责任公司 | High-voltage cathode electro-Fenton catalytic oxidation sewage treatment device |
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