CN201296687Y - Device for treating wastewater containing chlorophenol while recycling electric energy - Google Patents
Device for treating wastewater containing chlorophenol while recycling electric energy Download PDFInfo
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- CN201296687Y CN201296687Y CNU200820167958XU CN200820167958U CN201296687Y CN 201296687 Y CN201296687 Y CN 201296687Y CN U200820167958X U CNU200820167958X U CN U200820167958XU CN 200820167958 U CN200820167958 U CN 200820167958U CN 201296687 Y CN201296687 Y CN 201296687Y
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- chlorophenol
- electric energy
- anode
- compartment
- cathode
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Abstract
The utility model discloses a device for treating wastewater containing chlorophenol while recycling electric energy, which comprises an anode chamber and a cathode chamber that are integrated. A proton exchange membrane is arranged between the anode chamber and the cathode chamber. An anode and an aerator pipe are installed inside the anode chamber. A cathode and an aerator pipe are installed inside the cathode chamber. During the process of treating wastewater containing chlorophenol, the p-chlorophenol in the wastewater is reduced to phenol by using the protons and electrons generated by the organisms in the anaerobic sludge inside an oxidative nutrient solution under anaerobic condition, while recycling electric energy. The device has a simple structure and convenient operation, and can be used for treating wastewater containing various types of high-concentration chlorophenol organic pollutants at room temperature. The removal rate of chlorophenol is over 90%, maximally reaching 100%. Moreover, the electric energy can be recycled during the treatment process. The device can operate for a long time after being started, and is suitable for large-scale generalization and application.
Description
Technical field
The utility model relates to a kind of principle of microbial fuel cells that utilizes and handles the device that contains P-Chlorophenol waste water.Be implemented in and reclaim electric energy in the process for the treatment of waste water simultaneously.Belong to environmental protection and technical field of energy recovery.
Background technology
Persistence organic pollutant (Persistent Organic Pollutants, POPs) be meant have extended residual, biological accumulation, half volatile and high toxicity, by various surrounding mediums (atmosphere, water, organism etc.) can long-distance migration and long-term existence in environment, and then human health and environment are had the organic pollution materials of the natural or synthetic of serious harm.The POPs material is because the bio-toxicity of himself, great majority have very strong lipophilic hydrophobic nature, easily accumulation in vivo, after the POPs material is taken in by organism by all means, will in fat, accumulate formation " biological accumulation ", POPs concentration in the general projecting surrounding medium of its concentration forms so-called " biological concentrating ", thereby organism is produced serious harm.In food chain, concern owing to preying on, be in the organism of high trophic level owing to constantly prey on the low trophic level biology that body contains POPs, to accumulate the POPs of greater concn in its body, and the human the highest trophic level that is in food chain, the amplification of this food chain will certainly bring serious harm to the mankind.Owing to its difficult degradation, have half boiling characteristics, can in atmosphere, realize growing the diffusion of distance and accumulating in vivo.POPs belongs to " three cause " material, can cause harm such as endocrine regulation, reproduction and immune system disorder, so the pollution of persistence organic pollutant control receives paying close attention to more and more widely of international community.
Most of chlorophenols compounds are a kind of persistent organisms, have carinogenicity and cause endocrine regulation.Because of can be used as wood preservative, rust-preventive agent, sterilant and weedicide etc., it is used widely.But simultaneously also to physical environment particularly water body cause severe contamination.U.S. EPA and China Environmental Monitoring General Station all classify multiple chlorophenols compound as priority pollutants.
Chlorophenols compound is owing to the existence of himself aromatic ring structure and chloro atom is difficult to degraded.In giving water treatment, all be difficult to remove effectively with conventional physicochemical techniques and biological treatment.The middle-and-high-ranking oxidation technology of the method for conventional process chlorophenols compound needs the extreme condition of High Temperature High Pressure usually, makes the cost height, and operation easier is big, the equipment requirements strictness.And utilize microorganism directly to handle the waste water that to handle high density because chlorophenols compound has bio-toxicity.And be that a series of its efficient of chemical reduction facture of representative wait to improve with the Zero-valent Iron reduction technique.Microbiological fuel cell is as a technology of just having risen in recent years, because of its environment friendly with can reclaim electric energy and be widely used in sewage treatment area.But the microbiological fuel cell technology that great majority are used for sewage disposal are to utilize its anodic anaerobion that the degradation capability of organic pollutant is disposed of sewage, and often are left in the basket as the negative electrode of microbiological fuel cell important component part.In the utility model, select for use P-Chlorophenol as the simulating pollution thing.The Standard Electrode Potentials that P-Chlorophenol is reduced to the electrode reaction of phenol is+0.5-+1.5V.In typical microbiological fuel cell, the anodic Standard Electrode Potentials is-0.296V that this just makes P-Chlorophenol can accept to be delivered to by anode the electronics of negative electrode effectively.It is feasible utilizing the function of cathode compartment degraded P-Chlorophenol waste water when therefore, being implemented in electrogenesis with P-Chlorophenol as cathode oxidant structure microbiological fuel cell.Simultaneously, because separate with proton exchange membrane negative and positive two Room, microorganism does not directly contact with P-Chlorophenol, and this has also got rid of the murder by poisoning of P-Chlorophenol to microorganism, makes that containing P-Chlorophenol waste water with this technical finesse high density becomes possibility.
Summary of the invention
The purpose of this utility model provides a kind of processing and contains the device that P-Chlorophenol waste water reclaims electric energy simultaneously, and microbiological fuel cell is mutually integrated with wastewater processing technology, to be implemented in the purpose that reclaims electric energy when processing contains P-Chlorophenol waste water.
Processing of the present utility model contains the device that P-Chlorophenol waste water reclaims electric energy simultaneously, comprise the anolyte compartment and the cathode compartment that link into an integrated entity, between anolyte compartment and cathode compartment, proton exchange membrane is arranged, there is first rubber ring junction of proton exchange membrane and anolyte compartment, there is second rubber ring junction of proton exchange membrane and cathode compartment, the anode and first aeration tube are installed in the anolyte compartment, the top, anolyte compartment is provided with the first exhaust thief hatch, the negative electrode and second aeration tube are installed in the cathode compartment, the cathode compartment top is provided with the second exhaust thief hatch, and anode and negative electrode are drawn lead respectively.
Above-mentioned anode can be the carbon felt, and negative electrode can be carbon felt, carbon paper or graphite paper.Nafion 117 films that said proton exchange membrane adopts E.I.Du Pont Company to produce.
Utilize device described in the utility model to handle and contain the method that P-Chlorophenol waste water reclaims electric energy simultaneously, under 20～40 ℃, carry out according to the following steps:
1) start reaction unit: with the mud of taking from municipal sewage plant's anaerobic digester as microbe inoculation, mix the back with nutritive medium and inject the anolyte compartment, the volume ratio of microbe inoculation and nutritive medium is 1:3, feed nitrogen by first aeration tube in the anolyte compartment, in cathode compartment, add electrolyte solution, feed nitrogen by second aeration tube at cathode compartment, when being lower than 200mV, negative and positive two interpolar potential differences upgrade the nutritive medium in the anolyte compartment, make negative and positive two interpolar potential differences rise to 600mV, and making two interpolar potential differences between 200mV-600mV, repeat to change two cycles, reaction unit starts successfully;
2) processing contains P-Chlorophenol waste water: drain the electrolyte solution in the cathode compartment, injection contains the waste water of P-Chlorophenol, and by second aeration tube nitrogen that exposes to the sun, between negative electrode and anode, insert load and form loop generation electric energy, utilize the proton of anode microorganisms and electronics that the P-Chlorophenol reduction dechlorination is removed pollutent.
Above-mentioned nutritive medium consists of every liter and contains: KH
2PO
4, 13.60g; CH
3COONa, 1.00g; NaCl, 11.70g; NaOH, 2.30g; NH
4Cl, 0.45g; MgCl
26H
2O, 0.17g; FeCl
36H
2O, 1.00mg; MnCl
24H
2O, 23.0mg; CaCl
2, 15.0mg; Said electrolyte solution consists of every liter and contains: KH
2PO
4, 13.60g; NaCl, 11.70g; NaOH, 2.30g.
In handling the waste water process, for the lower waste water of some specific conductivity, can add a certain amount of hydrochloride, to improve electrogenesis and contaminant removal efficiency.
The principle that the utility model is handled waste water is as follows: contain in the process of P-Chlorophenol waste water in processing, the anaerobic sludge the anolyte compartment in is organism generation proton and the electronics in the chemotrophy liquid under anaerobic.Electronics from passing to anode in the cell after by external circuit to negative electrode.Proton then arrives cathode compartment by proton exchange membrane.At last, be adsorbed on that P-Chlorophenol on the negative electrode is accepted proton and electronics is reduced to phenol.The P-Chlorophenol dechlorination is the coefficient result of whole microbial fuel cells system, comprises generation, transmission and the consumption three phases of proton and electronics.Reaction formula in negative and positive two Room is as follows:
CH
3COO
-+4H
2O→2HCO
3 -+9H
++8e
-
RCl+H
++2e
-→RH+Cl
-
The beneficial effects of the utility model are:
The utility model is simple in structure, easy to operate, can use at normal temperatures, and be applicable to the various waste water that contain the chlorophenols organic pollutant of processing.The clearance of P-Chlorophenol reaches as high as 100% more than 90% in the utility model.And can from treating processes, reclaim electric energy.One-shot can long-play.Can handle high density and contain the chlorophenols organic pollutant wastewater, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 contains the device synoptic diagram that P-Chlorophenol waste water reclaims electric energy simultaneously for handling.
Fig. 2 exports curve over time for voltage.
Fig. 3 is a P-Chlorophenol concentration curve over time.
Embodiment
In order better to understand the utility model, below in conjunction with accompanying drawing and specifically implement that the utility model is described in further detail.
With reference to Fig. 1, processing of the present utility model contains the device that P-Chlorophenol waste water reclaims electric energy simultaneously, comprise the anolyte compartment 1 and the cathode compartment 2 that link into an integrated entity, proton exchange membrane 7 is arranged between anolyte compartment and cathode compartment, there is first rubber ring 5 junction of proton exchange membrane 7 and anolyte compartment 1, there is second rubber ring 6 junction of proton exchange membrane 7 and cathode compartment 2, the anode 3 and first aeration tube 10 are installed in anolyte compartment 1, the top, anolyte compartment is provided with the first exhaust thief hatch 12, the negative electrode 4 and second aeration tube 11 are installed in the cathode compartment 2, cathode compartment 2 tops are provided with the second exhaust thief hatch 13, and anode 3 is drawn lead 8 and 9 respectively with negative electrode 4.
Embodiment
Processing contains the waste water of P-Chlorophenol 60mg/l, sodium chloride-containing 11.7g/l in the waste water, pH=6.5.Anode and negative electrode all adopt the carbon felt as electrode materials.Carry out according to the following steps under 35 ℃: start reaction unit: as microbe inoculation, mixes injection anolyte compartment, back with the mud of taking from municipal sewage plant's anaerobic digester with nutritive medium, the volume ratio of microbe inoculation and nutritive medium is 1:3.Nutritive medium consists of every liter and contains: KH
2PO
4, 13.60g; CH
3COONa, 1.00g; NaCl, 11.70g; NaOH, 2.30g; NH
4Cl, 0.45g; MgCl
26H
2O, 0.17g; FeCl
36H
2O, 1.00mg; MnCl
24H
2O, 23.0mg; CaCl
2, 15.0mg.Feed nitrogen in the anolyte compartment to play stirring action by first aeration tube.Add electrolyte solution in cathode compartment, the electrolyte solution in the cathode compartment consists of every liter and contains: KH
2PO
4, 13.60g; NaCl, 11.70g; NaOH, 2.30g.Feed nitrogen to play stirring action by second aeration tube at cathode compartment.When being lower than 200mV, negative and positive two interpolar potential differences upgrade the nutritive medium in the anolyte compartment.Make negative and positive two interpolar potential differences rise to 600mV, and make two interpolar potential differences repeat to change two cycles between 200mV-600mV, reaction unit starts successfully.
Reaction unit drains the electrolyte solution in the cathode compartment after starting, and 200ml waste water is injected in the cathode compartment, and exposes to the sun nitrogen to play the effect of stirring by second aeration tube, inserts 200 ohmic resistances between negative electrode and anode.Voltage with volt ohm-milliammeter monitoring record resistance two ends.Reaction continues 45 hours.Voltage output over time as shown in Figure 2.The concentration of P-Chlorophenol over time as shown in Figure 3.P-Chlorophenol is removed fully after 45 hours.It is 12.4mW/m that mensuration by polarization curve obtains peak power output
2
Claims (2)
1. a processing contains the device that P-Chlorophenol waste water reclaims electric energy simultaneously, it is characterized in that comprising the anolyte compartment (1) and the cathode compartment (2) that link into an integrated entity, proton exchange membrane (7) is arranged between anolyte compartment and cathode compartment, there is first rubber ring (5) junction of proton exchange membrane (7) and anolyte compartment (1), there is second rubber ring (6) junction of proton exchange membrane (7) and cathode compartment (2), anode (3) and first aeration tube (10) are installed in anolyte compartment (1), the top, anolyte compartment is provided with the first exhaust thief hatch (12), negative electrode (4) and second aeration tube (11) are installed in the cathode compartment (2), cathode compartment (2) top is provided with the second exhaust thief hatch (13), and anode (3) is drawn lead (8) and (9) respectively with negative electrode (4).
2. processing according to claim 1 contains the device that P-Chlorophenol waste water reclaims electric energy simultaneously, it is characterized in that anode (3) is the carbon felt, and negative electrode (4) is carbon felt, carbon paper or graphite paper, Nafion 117 films that proton exchange membrane (7) is produced for E.I.Du Pont Company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820167958XU CN201296687Y (en) | 2008-11-24 | 2008-11-24 | Device for treating wastewater containing chlorophenol while recycling electric energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820167958XU CN201296687Y (en) | 2008-11-24 | 2008-11-24 | Device for treating wastewater containing chlorophenol while recycling electric energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201296687Y true CN201296687Y (en) | 2009-08-26 |
Family
ID=41042660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820167958XU Expired - Fee Related CN201296687Y (en) | 2008-11-24 | 2008-11-24 | Device for treating wastewater containing chlorophenol while recycling electric energy |
Country Status (1)
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|---|---|
| CN (1) | CN201296687Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609061B (en) * | 2009-07-13 | 2013-03-27 | 重庆大学 | Online titration method for measuring proton variation rate in biological wastewater treatment and device thereof |
| CN104386826A (en) * | 2014-09-19 | 2015-03-04 | 浙江大学 | Microbial fuel cell based method for treatment and detection of chromium-containing electroplating wastewater |
| CN104852072A (en) * | 2015-05-15 | 2015-08-19 | 南通科技职业学院 | Spherical leakage-proof two-chambered microbial fuel cell configuration |
-
2008
- 2008-11-24 CN CNU200820167958XU patent/CN201296687Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609061B (en) * | 2009-07-13 | 2013-03-27 | 重庆大学 | Online titration method for measuring proton variation rate in biological wastewater treatment and device thereof |
| CN104386826A (en) * | 2014-09-19 | 2015-03-04 | 浙江大学 | Microbial fuel cell based method for treatment and detection of chromium-containing electroplating wastewater |
| CN104852072A (en) * | 2015-05-15 | 2015-08-19 | 南通科技职业学院 | Spherical leakage-proof two-chambered microbial fuel cell configuration |
| CN104852072B (en) * | 2015-05-15 | 2017-10-24 | 南通科技职业学院 | A kind of spherical leakproof double-chamber microbiological fuel cell configuration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20101124 |