CN1186269C - Device for electro-biologic treatment of organic sewage difficult to degrade - Google Patents
Device for electro-biologic treatment of organic sewage difficult to degrade Download PDFInfo
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- CN1186269C CN1186269C CNB021004501A CN02100450A CN1186269C CN 1186269 C CN1186269 C CN 1186269C CN B021004501 A CNB021004501 A CN B021004501A CN 02100450 A CN02100450 A CN 02100450A CN 1186269 C CN1186269 C CN 1186269C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The present invention relates to a device for the electro-biologic treatment of organic sewage difficult to degrade, which comprises an electro-biologic reactor whose top is provided with an air outlet tube, wherein an air distributor is arranged in the electro-biologic reactor, a positive electrode and a negative electrode are vertically placed above the air distributor in the electro-biologic reactor in a staggering mode, a fixed carrier carried with microorganisms is installed between the positive electrode and the negative electrode, the lower end of the electro-biologic reactor is provided with an air inlet tube for supplying air to the electro-biologic reactor and a liquid outlet tube for liquid in the electro-biologic reactor to flow out, the liquid outlet tube is communicated with a settling tank, and a feed liquid distributing tube for distributing feed water is installed on the wall of the electro-biologic reactor; the top of the electro-biologic reactor is provided with an explosion-protection alarm device. The device adopting an electrocatalysis reaction/ microorganism metabolism coupling technology to strengthen the treating process of waste water can treat organic waste water difficult to degrade at normal temperature, and the device has the advantage of stable operation, high treatment efficiency, low energy consumption, low treatment cost and no generation of secondary pollution.
Description
Invention field
The present invention relates to a kind of wastewater treatment equipment, particularly a kind of device for electro-biologic treatment of organic wastewater with difficult degradation thereby.
Background technology
Along with industrial expansion, increasing fine chemical product constantly comes out.In these products, many materials not only can serious environment pollution, and is difficult to by biological degradation, as chlorophenol, chlorobenzene, oil of mirbane, dyestuff or the like.At present domestic have biological degradation method, electrolysis and degradation method, coagulation edman degradation Edman, high temperature oxidation edman degradation Edman or the like to this class material degradation method commonly used.Because the biodegradability (BOD/COD is low) of this class material is so the processing efficiency of traditional biochemical degradation method treatment unit is very low; Coagulation Method degradation treatment device is still relatively more effective to the removal of some pollutents, but the disadvantage that its exists is the secondary pollution precipitation that produces coagulating agent and pollutent formation; It is both economical that high temperature oxidation edman degradation Edman treatment unit is handled high-concentration waste water, but just not too suitable to the waste water of lower concentration, and to the requirement of reactor material also than higher.
The principle that electrolysis and degradation method treatment unit is handled this class waste water is to utilize oxygenant that electrolytic process produces (as O
2, O
3, OH, ClO
-Deng) or reductive agent (as H
2, H etc.) carry out oxidation (or reduction) reaction with organism in the waste water, make organism be transformed into low molecule inorganics, low molecule organic matter or insoluble larger molecular organics etc., and then with water sepn or become biodegradable organic molecule.Patent CN1295033A and CN1285316A adopt the electrolysis and degradation method to handle organic wastewater with difficult degradation thereby respectively, and the COD of waste water is reduced greatly, and improve the biodegradability (BOD/COD increase) of handling back water greatly.Yet find in using, when said apparatus is handled waste water, electrolytic current efficiency relatively low (high current density), and also the corrosion of electrode materials is also relatively more serious.In addition, in order to guarantee waste water energy qualified discharge, the waste water that electrolysis treatment is crossed also needs to carry out a biological disposal upon.
Chinese patent application number is that 00123839.6 patent application discloses a kind of waste disposal plant, be located at underground, be used to dispose of sewage, be characterized in: " comprise the sewage disposal portion of accommodating sewage and supply with iron ion or aluminum ions ion supply unit; the ion supply unit has the electrode that is installed on the clean-out cover; also have and detect above-mentioned electrode and whether immerse feeler mechanism in the sewage to above-mentioned sewage disposal portion; electrode by predetermined power source to above-mentioned electrode supply capability; make its electrolysis ... also have importing sewage; exist the anaerobism groove of anerobe, import sewage; Exist the aerobic groove of aerobic bacteria; Import sewage, make the settling bath of sludge settling; Above-mentioned electrode immerses above-mentioned anaerobism groove, aerobic groove or settling bath "; The maximum characteristics of this treatment unit are to carry out electrolytic reaction and biochemical reaction simultaneously, yet, but exist following defective: because the microbial suspension of this device is in water, when handling waste water, even electrolytic current density is lower, the microbial metabolic activity that is free in the water also is subjected to stronger restraining effect; The more important thing is that in order to allow organic molecule carry out electrochemical reaction, low excessively current density may make reaction normally carry out hardly, also just makes when handling some organic wastewater with difficult degradation thereby, this device is not suitable for handling organic wastewater with difficult degradation thereby.
Summary of the invention
Objects of the present invention are, overcome the deficiency that said apparatus exists, and provide a kind of with electrocatalytic reaction and microbial metabolism be coupled as one stable, processing efficiency is high, energy consumption is low, the reduction process cost, and can not produce the device for electro-biologic treatment of the organic wastewater with difficult degradation thereby of secondary pollution.
To achieve these goals, the present invention has adopted the device for electro-biologic treatment of ad hoc structure, efficiently carries out simultaneously to guarantee electrolytic catalysis and biological degradation in the electric bio-reactor; The electricity bio-reactor is the core that organic wastewater with difficult degradation thereby is handled, positive and negative electrode is interspersed in this electricity bio-reactor, the immobilization carrier that is loaded with microorganism then is distributed between the positive and negative electrode, water inlet pipe and gas distributor are established in the bottom of electricity bio-reactor, top is provided with rising pipe and vapor pipe, and be provided with warning device, to prevent the H in the metabolism waste gas
2Or CH
4With O
2Mixed explosion.This device adopts electrocatalytic reaction/microbial metabolism coupling technique to strengthen the treating processes of waste water, can handle organic wastewater with difficult degradation thereby at normal temperatures, have stable, processing efficiency is high, energy consumption is low, reduction process cost advantage, and can not produce secondary pollution.
Embodiment of the present invention are as follows:
The device for electro-biologic treatment of organic wastewater with difficult degradation thereby provided by the invention, comprise an electric bio-reactor 3, it is characterized in that, these electricity bio-reactor 3 tops are equipped with escape pipe 6, its inner bottom part is installed a gas distributor 2, gas distributor 2 tops are vertical within the electricity bio-reactor 3 just is staggeredly placed, negative potential 52,51, just, negative potential 52,51 installations are loaded with the immobilization carrier 4 of microorganism, electricity bio-reactor 3 lower ends are equipped with in order to the effusive drain pipe 12 of liquid in the inlet pipe 1 of bubbling air in electric bio-reactor 3 and the electric bio-reactor 3, drain pipe 12 is connected with settling tank 9, and the feed liquor distribution piping 8 to coming water to distribute is installed on electric bio-reactor 3 walls;
The described immobilization carrier 4 that is loaded with microorganism is organic polymer filling carrier, mineral filler carrier or inertia embedding medium carriers such as sodium alginate, PVA;
The described filling ratio of immobilization carrier 4 in electric bio-reactor 3 that is loaded with microorganism is 20%-95%;
Described electric bio-reactor 3 tops are provided with anti-explosion alarming device 7;
The electrode that described positive and negative electrode 52,51 is made for carbon, iron, stainless steel, nickel porous, palladium, platinum or rhodium with catalytic activity;
The current density of described positive and negative electrode 52,51 is 10-40A/m
2
Distance between the described positive and negative electrode 52,51 is 20-250mm.
The device for electro-biologic treatment of organic wastewater with difficult degradation thereby provided by the invention, its great advantage are the coupling reactions that can finish electrolysis/bio-digestion under higher current density, make waste water reach discharging even reuse standard after treatment; Compare with electrolytic process, the present invention can significantly reduce the output of mud, and processing cost is low; Have stable, processing efficiency is high, energy consumption is low, reduction process cost advantage, and can not produce secondary pollution.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention;
Wherein: electric bio-reactor 3 escape pipes 6 gas distributors 2
Positive electrode 5-2 negative potential 5-1 immobilization carrier 4
Anti-explosion alarming device 7 feed liquor dividers 8 liquid-inlet pipes 10
Embodiment
Further describe the present invention below in conjunction with drawings and Examples:
Accompanying drawing 1 is a structural representation of the present invention, as seen from the figure, the device for electro-biologic treatment of organic wastewater with difficult degradation thereby provided by the invention, comprise an electric bio-reactor 3, it is characterized in that, these electricity bio-reactor 3 tops are equipped with escape pipe 6, its inner bottom part is installed a gas distributor 2, gas distributor 2 tops are vertical within the electricity bio-reactor 3 just is staggeredly placed, negative potential 52,51, just, negative potential 52,51 installations are loaded with the immobilization carrier 4 of microorganism, electricity bio-reactor 3 lower ends are equipped with in order to the effusive drain pipe 12 of liquid in the inlet pipe 1 of bubbling air in electric bio-reactor 3 and the electric bio-reactor 3, drain pipe 12 is connected with settling tank 9, and the feed liquor distribution piping 8 to coming water to distribute is installed on electric bio-reactor 3 walls;
The described immobilization carrier 4 that is loaded with microorganism is organic polymer filling carrier, mineral filler carrier or inertia embedding medium carriers such as sodium alginate, PVA;
The described filling ratio of immobilization carrier 4 in electric bio-reactor 3 that is loaded with microorganism is 20%-95%;
Described electric bio-reactor 3 tops are provided with anti-explosion alarming device 7;
The electrode that described positive and negative electrode 52,51 is made for carbon, iron, stainless steel, nickel porous, palladium, platinum or rhodium with catalytic activity;
The current density of described positive and negative electrode 52,51 is 10-40A/m
2
Distance between the described positive and negative electrode 52,51 is 20-250mm.
Embodiment 1:
The device for electro-biologic treatment of the organic wastewater with difficult degradation thereby that present embodiment provides, its electric bio-reactor 3 horizontal positioned, positive and negative electrode 52 that stainless material is made and 51 vertical being staggeredly placed in electric bio-reactor 3, distance between the described positive and negative electrode 52,51 is 250mm, and current density is 40A/m
2The immobilization carrier 4 that is loaded with microorganism is installed between the positive and negative electrode 52 and 51, the filling ratio of immobilization carrier 4 in electric bio-reactor 3 that is loaded with microorganism is 50%, electricity bio-reactor 3 tops are provided with anti-explosion alarming device 7, and air flows in the electric bio-reactor 3 through gas distributor 2 from electric bio-reactor 3 bottom inflow pipes 1; Pending organic wastewater with difficult degradation thereby flows in the electric bio-reactor 3 by the top feed liquor distribution piping 8 of part recirculation water in liquid-inlet pipe 10 and the settling tank 9 by electric bio-reactor 3, waste water stopped 6 hours in electric bio-reactor 3, treated water is flowed out by electric bio-reactor 3 bottom drain pipes 12 and enters settling tank 9, partial reflux, part is discharged; Promptly finish the processing of its organic wastewater with difficult degradation thereby.
The device for electro-biologic treatment of the organic wastewater with difficult degradation thereby that provides with present embodiment is handled certain dye processing plant matching stain factory effluent: such wastewater through organic matter content height (COD＞600mg/l), dark, the difficult degradation (BOD/COD＜0.15) of colourity;
The treatment effect of present embodiment processing waste water is compared as follows table 1 with the treatment effect of independent electrolytic processing apparatus, independent biological treatment device;
Table 1
| Use independent electrolytic processing apparatus | Use independent biological treatment device | Use treatment unit of the present invention | |||
| Chroma removal rate % | COD CrClearance % | Chroma removal rate % | COD CrClearance % | Chroma removal rate % | COD CrClearance % |
| - | - | - | - | 14 | 21 |
| 11 | 4 | 23 | 29 | - | - |
| 35 | 17 | 48 | 44 | - | - |
| 81 | 59 | 93 | 89 | - | - |
| 88 | 67 | 99 | 93 | - | - |
Embodiment 2:
The device for electro-biologic treatment of the organic wastewater with difficult degradation thereby that present embodiment provides, its electric bio-reactor 3 horizontal positioned, negative potential 51 vertical being staggeredly placed in electric bio-reactor 3 that positive electrode 52 that carbon is made and nickel porous are made, distance between the described positive and negative electrode 52,51 is 20mm, and current density is 10A/m
2The immobilization carrier 4 that is loaded with microorganism is installed between the positive and negative electrode 52 and 51, the filling ratio of immobilization carrier 4 in electric bio-reactor 3 that is loaded with microorganism is 95%, electricity bio-reactor 3 tops are provided with anti-explosion alarming device 7, and air flows in the electric bio-reactor 3 through gas distributor 2 from electric bio-reactor 3 bottom inflow pipes 1; Pending organic wastewater with difficult degradation thereby flows in the electric bio-reactor 3 by the top feed liquor distribution piping 8 of part recirculation water in liquid-inlet pipe 10 and the settling tank 9 by electric bio-reactor 3, waste water stopped 6 hours in electric bio-reactor 3, treated water is flowed out by electric bio-reactor 3 bottom drain pipes 12 and enters settling tank 9, partial reflux, part is discharged; Promptly finish the processing of its organic wastewater with difficult degradation thereby.
The device for electro-biologic treatment of the organic wastewater with difficult degradation thereby that provides with present embodiment is handled with 2, the 6-chlorophenesic acid is the waste water of simulating pollution thing, and with independent electrolytic process, separately biological process is handled such waste water and is compared, in the handled simulated wastewater contained 2,6-chlorophenesic acid concentration is 40mg/l, contained glucose concn is 200mg/l, and the residence time of this waste water in electric bio-reactor 3 is 12h, the treatment effect such as the table 2 of three kinds of methods;
Table 2
| Electrolytic process | The electricity biological process | | |||
| 2,6-chlorophenesic acid clearance % | COD CrClearance % | 2,6-chlorophenesic acid clearance % | COD CrClearance % | 2,6-chlorophenesic acid clearance % | COD CrClearance % |
| - | - | - | - | 14 | 87 |
| 19 | 7 | 43 | 89 | - | - |
| 36 | 11 | 95 | 93 | - | - |
Embodiment 3:
The device for electro-biologic treatment of the organic wastewater with difficult degradation thereby that present embodiment provides, its electric bio-reactor 3 horizontal positioned, negative potential 51 vertical being staggeredly placed in electric bio-reactor 3 that positive electrode 52 that carbon is made and palladium are made, distance between the described positive and negative electrode 52,51 is 100mm, and current density is 30A/m
2The immobilization carrier 4 that is loaded with microorganism is installed between the positive and negative electrode 52 and 51, the filling ratio of immobilization carrier 4 in electric bio-reactor 3 that is loaded with microorganism is 20%, electricity bio-reactor 3 tops are provided with anti-explosion alarming device 7, and air flows in the electric bio-reactor 3 through gas distributor 2 from electric bio-reactor 3 bottom inflow pipes 1; Pending organic wastewater with difficult degradation thereby flows in the electric bio-reactor 3 by the top feed liquor distribution piping 8 of part recirculation water in liquid-inlet pipe 10 and the settling tank 9 by electric bio-reactor 3, waste water stopped 6 hours in electric bio-reactor 3, treated water is flowed out by electric bio-reactor 3 bottom drain pipes 12 and enters settling tank 9, partial reflux, part is discharged; Promptly finish the processing of its organic wastewater with difficult degradation thereby.
It is the waste water of simulating pollution thing that the device for electro-biologic treatment of the organic wastewater with difficult degradation thereby that provides with present embodiment is handled with oil of mirbane, and with independent electrolytic process, separately biological process is handled such waste water and is compared, contained nitro phenenyl concentration is 60mg/l in the handled simulated wastewater, contained glucose concn is 200mg/l, the residence time of this waste water in electric bio-reactor 3 is 20h, the treatment effect such as the table 3 of three kinds of methods:
Table 3
| Electrolytic process | The electricity biological process | Biological process | |||
| Oil of mirbane clearance % | COD CrClearance % | Oil of mirbane clearance % | COD CrClearance % | Oil of mirbane clearance % | COD CrClearance % |
| - | - | - | - | 16 | 74 |
| 11 | 9 | 35 | 77 | - | |
| 27 | 11 | 67 | 87 | ||
| 43 | 18 | 83 | 91 | - | |
Claims (7)
1. the device for electro-biologic treatment of an organic wastewater with difficult degradation thereby, comprise an electric bio-reactor (3), it is characterized in that, this electricity bio-reactor (3) top is equipped with escape pipe (6), its inner bottom part is installed a gas distributor (2), vertical just being staggeredly placed in gas distributor (2) top within the electricity bio-reactor (3), negative potential (52), (51), just, negative potential (52), the immobilization carrier (4) that is loaded with microorganism is installed (51), electricity bio-reactor (3) lower end is equipped with in order to the effusive drain pipe of liquid (12) in the inlet pipe (1) of bubbling air in electric bio-reactor (3) and the electric bio-reactor (3), drain pipe (12) is connected with settling tank (9), feed liquor distribution piping (8) to coming water to distribute is installed on electricity bio-reactor (3) wall
2. by the device for electro-biologic treatment of the described organic wastewater with difficult degradation thereby of claim 1, it is characterized in that the described immobilization carrier (4) that is loaded with microorganism is organic polymer filling carrier, mineral filler carrier or sodium alginate, PVA inertia embedding medium carrier.
3. by the device for electro-biologic treatment of the described organic wastewater with difficult degradation thereby of claim 1, it is characterized in that the described filling ratio of immobilization carrier (4) in electric bio-reactor (3) that is loaded with microorganism is 20%-95%.
4. by the device for electro-biologic treatment of the described organic wastewater with difficult degradation thereby of claim 1, it is characterized in that electric bio-reactor (3) top is provided with the anti-explosion alarming device.
5. by the device for electro-biologic treatment of the described organic wastewater with difficult degradation thereby of claim 1, it is characterized in that described positive and negative electrode (52), (51) are the electrode with catalytic activity that iron, stainless steel, carbon, nickel porous, palladium, platinum or rhodium are made.
6. by the device for electro-biologic treatment of the described organic wastewater with difficult degradation thereby of claim 5, it is characterized in that the current density of described positive and negative electrode (52), (51) is 10-40A/m
2
7. by the device for electro-biologic treatment of the described organic wastewater with difficult degradation thereby of claim 1, it is characterized in that the distance between described positive and negative electrode (52), (51) is 20-250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021004501A CN1186269C (en) | 2002-01-30 | 2002-01-30 | Device for electro-biologic treatment of organic sewage difficult to degrade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021004501A CN1186269C (en) | 2002-01-30 | 2002-01-30 | Device for electro-biologic treatment of organic sewage difficult to degrade |
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|---|---|
| CN1435379A CN1435379A (en) | 2003-08-13 |
| CN1186269C true CN1186269C (en) | 2005-01-26 |
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|---|---|---|---|
| CNB021004501A Expired - Fee Related CN1186269C (en) | 2002-01-30 | 2002-01-30 | Device for electro-biologic treatment of organic sewage difficult to degrade |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425543C (en) * | 2005-07-07 | 2008-10-15 | 天津大学 | Electric biological processing device and method for waste water containing heavy metal ion and non-degradable organism |
| CN102424471A (en) * | 2011-10-20 | 2012-04-25 | 天津工业大学 | Degradation method of aryl chloride pollutants by anaerobic electrobiological technology |
| CN102424473A (en) * | 2011-10-20 | 2012-04-25 | 天津工业大学 | Method for degrading chlorinated organic pollutant by separated electrocatalysis of microorganism |
| CN102417231B (en) * | 2011-10-24 | 2013-06-05 | 沈阳建筑大学 | Adjustable multi-electrode low-voltage electricity-organism reactor |
| CN103397340B (en) * | 2013-08-09 | 2016-08-03 | 内蒙古科技大学 | Utilize the method that microorganism electrolysis cell reclaims nickel from nickel-containing waste water |
| CN107487848A (en) * | 2017-09-19 | 2017-12-19 | 华东师范大学 | A kind of three-dimensional electric biological reaction apparatus for waste water treatment |
| CN108117149B (en) * | 2017-12-21 | 2020-11-06 | 上海理工大学 | Device and method for treating high-solid-content organic waste through microorganism coupling electrolysis |
| CN114685012A (en) * | 2022-04-27 | 2022-07-01 | 广东硕光环保科技有限公司 | Fishery wastewater treatment method |
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