CN206940627U - A kind of electric Fenton water treatment facilities - Google Patents

A kind of electric Fenton water treatment facilities Download PDF

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Publication number
CN206940627U
CN206940627U CN201720610850.2U CN201720610850U CN206940627U CN 206940627 U CN206940627 U CN 206940627U CN 201720610850 U CN201720610850 U CN 201720610850U CN 206940627 U CN206940627 U CN 206940627U
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electrolytic cell
fenton
water treatment
treatment facilities
negative electrode
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CN201720610850.2U
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田智
李洪
刘世林
赵绍燕
杨红梅
周世平
唐俊
蒲柳
冀禹彤
胡琴
董廷旭
刘泉
黄天志
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MIANYANG TEACHERS COLLEGE
SICHUAN SCIENCECITY CENTRAL TECHNOLOGY Inc
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MIANYANG TEACHERS COLLEGE
SICHUAN SCIENCECITY CENTRAL TECHNOLOGY Inc
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Abstract

The utility model discloses a kind of electric Fenton water treatment facilities, including housing, in the electrolytic cell of enclosure interior, the Fenton reactor being connected with electrolytic cell, three parallel relative electrodes are provided with electrolytic cell, the first anode and second plate are helicoidal structure, negative electrode is loose structure, the negative electrode includes graphite cake, it is arranged on graphite cake both sides and the adsorption layer being connected with graphite cake, temperature sensor is provided with the Fenton reactor, temperature controller, the hull outside is provided with water pump, control module, the signal input part of the iron ion sensor signal output end and control module that are arranged on water outlet connects, the water pump signal input is connected with control module signal output part.The utility model uses said structure, and caused sediment will not pollute solution in electrolytic cell after reaction, while carry out detection in real time and regulation and control in time to iron concentration after solution temperature and reaction.

Description

A kind of electric Fenton water treatment facilities
Technical field
The invention belongs to sewage disposal technology, and in particular to a kind of fragrant degree water treatment facilities of electricity.
Background technology
The annual environmental aspect publication issued according to State Environmental Protection Administration, China's total amount of sewage discharge in 2011 are 659.2 Hundred million tons, wherein discharged volume of industrial waste water is 230.9 hundred million tons.Wherein textile industry/printing and dyeing class waste water year yield is about 2,500,000,000 tons, work The sludge of industry discharge of wastewater also reaches ten million ton every year.Due to containing fibrous raw material entrainment in itself and adding in dyeing waste water Slurry, finish, dyestuff and chemical assistant for being used during work etc. so that dyeing waste water has COD height, colourity deep, difficult biological The features such as degraded and component, physicochemical property change more.
In sewage disposal technology, the most significant feature of advanced oxidation water process is can to produce hydroxyl radical free radical(•OH), by There is high oxidizing potential in OH, can be with the organic pollution in waste water without quick chain reaction selectively occurs, by difficulty The larger molecular organicses of biochemical degradation are converted into the micromolecular compound of bio-degradable, or even are finally broken down into CO2、H2O etc. Simple inorganic molecule, so as to be greatly enhanced the biodegradability of bio-refractory waste water or realize directly degraded.Wherein, Fenton Oxidation technology is the efficient water technology that a kind of Quick Oxidation removes removal organic polluter, is with a wide range of applications.Use iron Plate or steel plate do sacrificial anode, under electric field action, Anodic Stripping Fe2+;O2In negative electrode(Oxygen diffusion cathode)Upper generation bielectron Reduction reaction(In acid condition)Generate H2O2.Fenton reagent reaction, H are produced in solution2O2It is catalytically decomposed as OH, Fe2+ It is oxidized to Fe3+ .Conventional electrolysis product is the alternate vertical plate structure of multigroup both positive and negative polarity, the upper and lower baffling of solution or level Staggeredly baffling, anode all use iron anode so that the iron ion inside solution increases, and it is anti-Fenton to occur immediately in electrolytic cell Should, caused sediment can pollute electrolytic cell, be unfavorable for sewage disposal.In addition, the catalyst in Fenton's reaction in solution needs To carry out at a suitable temperature.
Administer at present in place of some equal Shortcomings of solution method and apparatus of high-concentration hardly-degradable dyeing waste water, and face to face When facing combined pollution, lack systematicness, the solution and technical equipment of relevance.
Utility model content
The invention provides a kind of electric Fenton water treatment facilities, solves multi-group electrode plate sun in existing electric Fenton water process Effect is poor at pole, the alternate constitution water of negative electrode, and iron concentration can not be real in the solution temperature and solution in water treatment procedure When the problem of being monitored and controlled, it is right by Fenton's reaction process lasting in electrolyzer electric chemical reaction and Fenton reactor Sewage is pre-processed.Meanwhile the temperature of solution and the situation of water process are carried out by temperature controller, control module real-time Monitoring.
The present invention to achieve the above object, adopts the following technical scheme that:A kind of electric Fenton water treatment facilities, including housing, It is characterized in that the electrolytic cell being connected with water inlet, the Fenton reactor being connected with electrolytic cell, institute are provided with the housing Fenton reactor is stated to be connected with delivery port, be provided with the electrolytic cell three it is parallel relative and mutually hung down with solution flow direction Straight electrode, the electrode sequentially consist of the first anode, negative electrode, second plate, the first anode and second plate Be helicoidal structure, the negative electrode is loose structure and to be connected with the negative pole of two dc sources, the first anode and its In dc source positive pole connection, the second plate is connected with the positive pole of another dc source, and the negative electrode includes Graphite cake, graphite cake both sides and the adsorption layer being connected with graphite cake are arranged on, temperature biography is provided with the Fenton reactor Sensor, the temperature controller for being connected with sensor signal output end and being regulated and controled to solution temperature, the hull outside are set Water pump, control module are equipped with, the signal of the iron ion sensor signal output end and control module that are arranged on water outlet inputs End connection, the water pump signal input are connected with control module signal output part.
The Fenton reactor is provided with permeable membrane above electrolytic cell between the Fenton reactor and electrolytic cell.
The electrode is vertical with housing sidewall to be fixedly connected, and the distance between described two adjacent electrodes are identical.
The first anode is located at bottom of electrolytic tank, negative electrode is located in the middle part of electrolytic cell, second plate is located at upper part of the electrolytic cell.
The first anode includes stud, and the surface of the stud includes tin, antimony, iridium, the compound of platinum coated with one layer Coating.
The second plate is iron electrode.
The thickness of the negative electrode is 100mm.
The adsorption layer is alveolate texture of the surface by the coating processing of tetrafluoroethene point-like.
The filler of supplement iron ion is placed with Fenton reactor.
Housing bottom is provided with the aerating system that blower fan provides source of oxygen for negative electrode, and the blower fan is arranged on housing Outside.
The present invention compared with prior art, has advantages below and beneficial effect:
Compared with prior art, the present invention is simple in construction, and water treatment efficiency is notable.With traditional motor product structure not Together, the present invention uses three electrodes, two anodes and a negative electrode, can be right respectively by the circuit design of three electrode dual power supplies Two groups of pole plates carry out voltage, current regulation, effectively control Fe2+With H2O2Concentration and yield, required for obtaining Fenton's reaction Optimum proportioning;Anode is helical structure, and negative electrode is loose structure, and the design of three electrodes makes reactant(Such as organic molecule, Oxygen molecule etc.)Electrode surface is easily contacted, and then improves reaction probabilities and water treatment efficiency;Extending cathode thickness reaches 100mm, cathode area is considerably increased, there is very high electrochemistry formated H2O2, while the surface of negative electrode is through polytetrafluoroethylene (PTFE) Point-like coating handle, make its loose structure surface formed water-repellent layer, formed in this region this region formed profuse solid-liquid- Gas three phase boundary, make a large amount of oxygen molecule absorption in population cathode surface;The first anode is titanium-based layer anode, organic in waste water Thing pollutes molecule by anode direct electrochemical oxidation, improves electric Fenton device treatment effeciency;Between electrolytic cell and Fenton reactor Permeable membrane is provided with, is that sediment precipitates without the electrode in contaminated electrode groove in the reactor;Control module, temperature inductor And temperature controller, implementing monitoring and adjustment are carried out to solution temperature, in addition, iron ion inductor and water pump, can detect water The situation of processing, according to iron concentration situation, the water of water outlet is flowed back into electrolytic cell by water pump, by flowing back, Treatment effeciency is improved, big yield additionally aids the suspension and renewal electrode surface taken away in reactor, prevents equipment from blocking.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Wherein:1st, housing, 2, electrolytic cell, 3, Fenton reactor, 4, the first anode, 5, second plate, 6, negative electrode, 7, infiltration Film, 8, water inlet, 9, delivery port.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
As shown in figure 1, a kind of electric Fenton water treatment facilities, including housing, it is provided with what is be connected with water inlet in housing Electrolytic cell, the Fenton reactor being connected with delivery port, electrolytic cell are connected with Fenton reactor, and housing bottom is provided with aeration system System, aerating system are connected with water inlet, and aerating system includes providing the source of oxygen needed by external fan for negative electrode.Fenton is anti- Device is answered in the top of electrolytic cell, and permeable membrane is provided between electrolytic cell and Fenton reactor.The function of electrolytic cell is electrification Learn and produce Fe2+And H2O2, the function of Fenton reactor is to carry out lasting Fenton's reaction.Electrolytic cell can set multigroup, cooperation Fenton reactor uses.
Three parallel relative electrodes are provided with electrolytic cell, electrode and the direction that solution in electrolytic cell flows are perpendicular, Electrode is sequentially consisted of in the first anode of bottom of electrolytic tank, the in a cell negative electrode in portion, in upper part of the electrolytic cell Two anodes.Three electrodes are vertical with housing sidewall to be fixedly connected, and the distance between adjacent electrode is identical.Two anodes are set It is set to and obtains higher H2O2Yield, but if two anodes use iron plate, it will produce two problems:First, Fe2+It is excessive;Two It is to produce Fenton's reaction immediately in electrolytic cell, Fe2+Fe is converted into quickly3+, three dimensional particles group's negative electrode is polluted, reduces reaction Efficiency, to a large amount of iron cements are brought in electrolytic cell, excessive, the too fast loss that results in blockage with anode.Therefore second plate is iron sun Pole, the first anode are titanium-based layer anode, and stud surface is coated with more kinds of catalysis oxygen of the Sn-Sb-Ir-Ta with high oxygen separated overpotential Change matter coatings, under electric field action, its surface produces great amount of hydroxy group free radical(•OH), the organic pollutant molecule in waste water Direct electrochemical oxidation and the degradation reaction by hydroxyl radical free radical indirect oxidation occurs in anode surface.Negative electrode is by porous graphite plate Formed with the adsorption layer that porous graphite plate both sides are connected with graphite cake is arranged on, adsorption layer is surface by the painting of tetrafluoroethene point-like The alveolate texture of processing is applied, adsorption layer is closely connected with graphite cake, forms extending cathode, and extension thickness reaches 100mm, greatly Cathode area is increased, there is very high electrochemistry formated H2O2Efficiency.
The operating current of three electrodes is provided by two dc sources, and negative electrode is connected with the negative pole of two dc sources, the One anode is connected with the positive pole of one of dc source, and second plate is connected with the positive pole of another dc source.Two sun Extremely helicoidal structure, negative electrode are that loose structure, helical structure and loose structure have bigger surface area than slab construction, with Water engaging surface product increase.By the circuit design of three electrode dual power supplies, voltage, current regulation can be carried out to two groups of pole plates respectively, Effectively control Fe2+With H2O2Concentration and yield, to obtain the optimum proportioning required for Fenton's reaction.Regulation input three dimensional particles The total current of group's extending cathode, can obtain the H for meeting water process requirement in the solution2O2;By adjusting on input iron anode Electric current, the H for meeting water process requirement can be obtained in the solution2O2With Fe2+Solubility ratio.Typically require H2O2With Fe2+ The ratio between More than 1.5(Mol ratio), therefore the current requirements on iron anode are less than the total current on negative electrode.Traditional Fenton's reaction due to FeSO4It is disposable it is excessive add, excessive Fe2+Fe is oxidized to quickly3+, sludge quantity and solution colourity are added, and can not Ensure the lasting generation of Fenton reagent so that reaction efficiency is low, and the present apparatus overcomes this drawback, sustainable generation Fe2+
Be provided with Fenton reactor temperature sensor, the temperature controller that solution temperature is adjusted, supplement iron from The filler of son, the hull outside are provided with water pump, control module, are arranged on the iron ion sensor signal output of water outlet End is connected with the signal input part of control module, and water pump signal input is connected with control module signal output part.TEMP Device is monitored in real time to solution temperature, and when solution temperature is less than optimal reaction temperature, temperature controller adds to solution Heat treatment;When solution temperature is higher than optimal reaction temperature, temperature controller carries out cooling processing to solution, allows solution temperature to begin Optimum temperature range is maintained at eventually, and the activity of catalyst is optimal.The iron ion sensor of water outlet can detect reaction after it is molten Iron concentration in liquid, the water that Fenton reactor comes out realize a large amount of backflows by water pump.Control module is according to iron concentration The capacity of returns of water pump is controlled, backflow can make the Fe formed after Fenton's reaction3+Fe is reduced in negative electrode2+, while unreacted is complete Oxidant by backflow, can improve water treatment efficiency, a large amount of water are also helped with anti-with the waste water fast reaction just entered The suspension in device is answered, electrode surface is updated, prevents equipment from blocking.
Fenton water process can combine with plasma water processing, and plasma water process is to utilize nanosecond first(ns)Pulse is situated between Matter barrier discharge, produce room-temperature plasma.Because ns rising edge of a pulses are precipitous, in ns magnitudes(Pulsewidth stage discharge off electricity Stream), only transient current will not produce substantial amounts of heat, can form room-temperature plasma, produce mass efficient active material Reduce energy consumption again simultaneously.In order to control active principle caused by chain reaction, by adjusting the air humidity of discharge gas, I.e. control enters the amount of hydrone in discharge gas, to improve OH and H2O2Yield and the efficiency of processing.
For the first anode under electric field action, surface produces great amount of hydroxy group free radical, after waste water is from water inlet into electrolytic cell, Organic pollutant molecule occurs on first anode surface first to be reacted by anode direct electrochemical oxidation and by between hydroxyl radical free radical The degradation reaction of oxidation is connect, cathode porous body structure surface enters polytetrafluoroethylene (PTFE) point-like coating processing and forms water-repellent layer, and work is herein Region forms extremely abundant solid-liquid-gas-three phase boundary, makes substantial amounts of oxygen molecule absorption in the adsorption layer table of population negative electrode Face, the electronics of external circuit offer is provided, oxygen molecule is electrochemically reduced to H202 .Meanwhile hydrone occurs for the first anode The side reaction for producing oxygen is decomposed by anode electrochemical, oxygen caused by side reaction is upward together with air stream, cloudy into extension Pole reaction zone.Fe caused by the first anode2+Electrolytic cell is left, into Fenton reactor, avoids Fe caused by Fenton's reaction3+ Precipitation is produced in electrolytic cell.Fenton's reaction needs the regular hour, and Fenton reactor can ensure the time that reaction needs, Fenton production Raw Fe (OH)3, Fe (OH)3Sludge caused by flocculation precipitates separation in deep reaction device, will not pollute electrolytic tank electrode, together When, the filler of Fenton reactor kind placement, persistently supplement Fe2+, make the high-efficiency continuous progress of reaction.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (10)

1. a kind of electric Fenton water treatment facilities, including housing, it is characterised in that be provided with the housing and be connected with water inlet Electrolytic cell, the Fenton reactor that is connected with electrolytic cell, the Fenton reactor is connected with delivery port, set in the electrolytic cell Have three parallel relative and electrodes perpendicular with solution flow direction, the electrode sequentially consist of the first anode, Negative electrode, second plate, the first anode and second plate are helicoidal structure, the negative electrode be loose structure and with two The negative pole connection of dc source, the first anode be connected with the positive pole of one of dc source, the second plate and separately The positive pole connection of one dc source, the negative electrode include graphite cake, are arranged on graphite cake both sides and the suction being connected with graphite cake Attached layer, temperature sensor is provided with the Fenton reactor, is connected with sensor signal output end and solution temperature is entered The temperature controller of row regulation and control, the hull outside are provided with water pump, control module, are arranged on the iron ion sensing of water outlet Device signal output part and the signal input part of control module connect, the water pump signal input and control module signal output part Connection.
2. a kind of electric Fenton water treatment facilities according to claim 1, it is characterised in that the Fenton reactor is being electrolysed Above groove, permeable membrane is provided between the Fenton reactor and electrolytic cell.
3. a kind of electric Fenton water treatment facilities according to claim 1, it is characterised in that the electrode hangs down with housing sidewall Directly it is fixedly connected, the distance between described two adjacent electrodes are identical.
4. a kind of electric Fenton water treatment facilities according to claim 3, it is characterised in that the first anode is positioned at electrolysis Trench bottom, negative electrode are located in the middle part of electrolytic cell, second plate is located at upper part of the electrolytic cell.
A kind of 5. electric Fenton water treatment facilities according to claim 4, it is characterised in that the first anode includes stud, The surface of the stud is coated with one layer of compound coat for including tin, antimony, iridium, platinum.
6. a kind of electric Fenton water treatment facilities according to claim 4, it is characterised in that the second plate is iron electrode.
7. a kind of electric Fenton water treatment facilities according to claim 4, it is characterised in that the thickness of the negative electrode is 100mm。
8. a kind of electric Fenton water treatment facilities according to claim 1, it is characterised in that the adsorption layer passes through for surface The alveolate texture of tetrafluoroethene point-like coating processing.
9. a kind of electric Fenton water treatment facilities according to claim 1, it is characterised in that benefit is placed with Fenton reactor Fill the filler of iron ion.
10. a kind of electric Fenton water treatment facilities according to claim 1, it is characterised in that be provided with housing bottom Blower fan provides the aerating system of source of oxygen for negative electrode, and the blower fan is arranged on outside housing.
CN201720610850.2U 2017-05-27 2017-05-27 A kind of electric Fenton water treatment facilities Active CN206940627U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439671A (en) * 2018-05-16 2018-08-24 武汉轻工大学 A kind of electric Fenton of photovoltaic driving is from the system of maintenance and the method for aniline degradation waste water
CN110190520A (en) * 2019-05-06 2019-08-30 邱庆彬 A kind of nanometer water ion generating device
CN113149150A (en) * 2021-04-25 2021-07-23 中国地质大学(武汉) Activated carbon cathode electro-Fenton system and method for removing underground water halogenated hydrocarbons by using same
CN113828631A (en) * 2021-10-22 2021-12-24 南开大学 Device and method for treating pesticide-polluted soil in ex-situ manner by electro-catalytic Fenton oxidation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439671A (en) * 2018-05-16 2018-08-24 武汉轻工大学 A kind of electric Fenton of photovoltaic driving is from the system of maintenance and the method for aniline degradation waste water
CN108439671B (en) * 2018-05-16 2021-05-07 武汉轻工大学 Photovoltaic-driven electro-Fenton self-maintenance system and method for degrading aniline wastewater
CN110190520A (en) * 2019-05-06 2019-08-30 邱庆彬 A kind of nanometer water ion generating device
CN110190520B (en) * 2019-05-06 2024-02-23 平流层复合水离子(深圳)有限公司 Nanometer water ion generating device
CN113149150A (en) * 2021-04-25 2021-07-23 中国地质大学(武汉) Activated carbon cathode electro-Fenton system and method for removing underground water halogenated hydrocarbons by using same
CN113149150B (en) * 2021-04-25 2023-02-24 中国地质大学(武汉) Active carbon cathode electro-Fenton system and method for removing underground water halogenated hydrocarbons by using same
CN113828631A (en) * 2021-10-22 2021-12-24 南开大学 Device and method for treating pesticide-polluted soil in ex-situ manner by electro-catalytic Fenton oxidation

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