CN202322491U - Three-dimensional electrode biological film reactor - Google Patents
Three-dimensional electrode biological film reactor Download PDFInfo
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- CN202322491U CN202322491U CN2011204667904U CN201120466790U CN202322491U CN 202322491 U CN202322491 U CN 202322491U CN 2011204667904 U CN2011204667904 U CN 2011204667904U CN 201120466790 U CN201120466790 U CN 201120466790U CN 202322491 U CN202322491 U CN 202322491U
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Abstract
The utility model discloses a three-dimensional electrode biological film reactor. A diaphragm concentric to the reactor body is arranged in the reactor body, and divides the reactor into a circular positive area and an annular negative area; a microbial carrier filling material is filled in the positive area; a positive electrode is arranged in the center of the positive area; a negative electrode is arranged in the negative area; a conductive particle is filled in the negative area to serve as a third electrode; the negative electrode and the conductive particle serve as microbial carriers at the same time; a water inlet pipe is arranged at the bottom of the positive area; and a water outlet pipe is arranged in the negative area, and is arranged on the outer wall at the upper end of the reactor body. In the three-dimensional electrode biological film reactor, a microbial agreeable environment for the nitrification function and the denitrification function of an electron acceptor and an electron donor respectively is created by utilizing an electrochemical action, so that the purpose of efficient ammonia nitrogen waste water treatment with low energy consumption, high efficiency, simple structure and easiness in operation is achieved.
Description
Technical field
The utility model relates to Waste Water Treatment, specifically refers to a kind of three-diemsnional electrode biofilm reactor of handling the low ratio of carbon to ammonium high ammonia-nitrogen wastewater that is applicable to, belongs to water-treatment technology field.The utility model combines biomembrance process in same reactor drum with electrochemical process, accomplish the whole process that nitrification and denitrification is handled the low ratio of carbon to ammonium high ammonia-nitrogen wastewater.
Background technology
Raising along with China's industrial and agricultural production development and the level of urbanization; The municipal effluent water displacement increases sharply; A large amount of unprocessed or through handling but water outlet nitrogen phosphorus still is difficult to municipal effluent up to standard enters lake, city, river; Make that nitrogen and phosphorus pollution is on the rise in the water body, its direct result is a body eutrophication.
Nitrogen in the water body mainly exists with the form of organonitrogen and inorganic nitrogen.Organonitrogen comprises protein, polypeptide, amino acid and urea etc., and organonitrogen is an inorganic nitrogen through the decomposition and inversion of mikrobe, is mainly ammonia nitrogen, nitrite nitrogen and nitric nitrogen.Mainly through nitrification and denitrification technology, the nitrogen transformation that makes various forms is gaseous nitrogen (N in the removal of nitrogen in the waste water
2, N
2O etc.) effusion water body and water body is purified.Handle to the low ratio of carbon to ammonium high ammonia-nitrogen wastewater, in traditional biological nitrification and denitrification process, have problems such as basicity and carbon source deficiency, be necessary to develop new denitrogenation approach.
The traditional biological denitrification process promptly is the organism that utilizes in the waste water, perhaps through adding organism methyl alcohol, ethanol etc., carries out denitrification as electron donor, and nitrate nitrogen is converted into nontoxic nitrogen.Through adding organism, can obtain higher denitrification rate, but have remaining organism in the water outlet, not only influenced effluent quality but also increased working cost.For the high waste water of ammonia-nitrogen content, like sludge of sewage treatment plants lye and percolate etc., when adopting the traditional biological denitrogenation method to handle, need add organic carbon source to satisfy the needs of heterotrophic denitrification, energy consumption is big, processing costs is high.
In recent years, on traditional nitrated-denitrification process basis, develop and a series of efficient, energy-conservation denitride technologies, like CANON of SHARON, ANAMMOX and the two combination etc.These technology utilization nitrite type denitrifications and Anammox shorten the conversion process of nitrogen, reach the saving of energy and electron donor.Different with it, the electrode biomembrane method is the denitrogenation method that another kind has potentiality.This techniques make use hydrogen autotrophic bacteria carries out denitrification, a small amount of or do not have under the condition of organic carbon source, can realize NO
x -Removal.Because the product cleaning can not increase the water outlet burden; The more important thing is that it has overcome residual gas that outside direct hydrogen supply gas causes runs off and weakness such as not easy to operate, and the biochemical reaction process of complicacy is controlled with simple current setting, energy consumption is low, and is easy to operate.
At present, the electrode biomembrane fado is to the removal of nitrate salt in the water, and the processing that this method is applied to the low ratio of carbon to ammonium high ammonia-nitrogen wastewater is also very rarely seen.
The utility model content
To the above-mentioned deficiency that prior art exists, the utility model provides the three-diemsnional electrode biofilm reactor that is used to handle the low ratio of carbon to ammonium high ammonia-nitrogen wastewater that a kind of energy consumption is low, efficient is high, simple in structure.
To achieve these goals; The technical scheme that the utility model adopts is such: a kind of three-diemsnional electrode biofilm reactor, and it comprises reactor body, said reactor body is the band cylindrical structure at the end; In reactor body, be provided with and the concentric barrier film of reactor body; Barrier film is divided into two portions with the reactor drum inner compartment, and the border circular areas in the barrier film is an anode region, and the annular region between the outer and reactor body inwall of barrier film is a cathode zone; Be filled with microbe carrier stuffing at anode region, and be provided with positive electrode at the center; Be provided with negative potential at cathode zone, negative potential is close to the reactor body inwall, and at cathode zone filled conductive particle as third electrode, negative potential and conducting particles are simultaneously as microbe carrier; The anode region bottom is provided with water inlet pipe, and cathode zone is provided with rising pipe, and rising pipe is located at reactor body upper end outer wall.
Further, be provided with return line at reactor body outer wall middle part, return line is communicated with water inlet pipe, and return line is used for the water section of cathode zone is back to anode region.
Said positive electricity is the inert metal material very; Said negative electricity is graphite, carbon-point, NACF felt or stainless (steel) wire very; Said conducting particles is activated carbon granule or hard coal.
Said barrier film is hydrophilic films such as FM, aromatic polyamide or pvdf.
The microbe carrier stuffing that anode region is filled is insulating material such as elastic filler, soft-filler or floating stuffing.
Compared with prior art, the utlity model has following advantage:
1) electrolytic action is that the microorganism growth breeding provides adapt circumstance, and promptly the positive column is aerobic, and the cathodic area anoxic, mikrobe utilizes electrolysate as metabolism substrate simultaneously, has good synergy between electrolysis and the Microbial denitrogenation.
When 2) positive electrode (anode) was the inert metal material, electrode reaction was main to analyse oxygen, saved the aeration energy needed, cut down the consumption of energy.
3) negative potential (negative electrode) brine electrolysis original position is produced hydrogen, and hydrogen to external diffusion, provides hydrogen to compare with the external world and all is being enhanced on the mass transfer direction He on the mass transfer power in the microbial film.
4) cathodic area mikrobe denitrification denitrogenation utilizes electrolysate hydrogen as electron donor, need not add organic carbon source, simultaneously the product cleaning.
5) cathode zone filler particles shape conducting particles, particle filled composite has improved the microbial biomass in the reactor drum as microbial carrier on the one hand; Increased specific surface area on the other hand, mass transfer effect improves, and has improved current efficiency and treatment efficiency.
6) this reactor drum is used simple electric current with the biosystem of complicacy and regulated and control, and is simple to operate.
The utility model can be implemented in the same electrode biomembrane reactor drum, utilizes electrochemical action to create the mikrobe adapt circumstance, and provides electron acceptor(EA) and electron donor to carry out the nitrification and denitrification effect respectively, reaches the purpose of effective processing ammonia nitrogen waste water.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, 1-reactor body; The 2-positive electrode; The 3-negative potential; The 4-conducting particles; The 5-barrier film; The 6-water inlet pipe; The 7-rising pipe; The 8-return line; The 9-microbe carrier stuffing; The 10-D.C. regulated power supply.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
The utility model three-diemsnional electrode biofilm reactor is mainly used in and handles the low ratio of carbon to ammonium high ammonia-nitrogen wastewater, referring to Fig. 1; Its main structure body is a reactor body 1; Said reactor body 1 adopts cylindrical structure, in reactor body 1, is provided with and the concentric barrier film 5 of reactor body, by barrier film the reactor drum inner compartment is divided into anode region and cathode zone two portions; Border circular areas in the barrier film is an anode region, and the annular region between the outer and reactor body inwall of barrier film is a cathode zone.Be filled with microbe carrier stuffing 9 at anode region, and be provided with positive electrode 2 at the center; Be provided with negative potential 3 at cathode zone, negative potential is close to the reactor body inwall, and at cathode zone filled conductive particle 4 as third electrode, negative potential 3 and conducting particles 4 are simultaneously as microbe carrier.Microorganic adhesion forms microbial film at the carrier surface in positive column and cathodic area.Positive electrode 2 (anode) and negative potential 3 (negative electrode) connect the positive pole and the negative pole of D.C. regulated power supply 10 respectively through lead.Positive electrode 2, negative potential 3 and conducting particles 4 common formation three-diemsnional electrodes.Be provided with water inlet pipe 6 in the anode region bottom, cathode zone is provided with rising pipe 7, and the water after the processing is discharged system through rising pipe, and rising pipe 7 is located at reactor body upper end outer wall.
The utility model reactor drum current adopt the rising streaming, bottom water inlet, top water outlet.Be provided with return line 8 at reactor body outer wall middle part, return line 8 is communicated with water inlet pipe 6, is used for the water section of cathode zone is back to anode region.Because anode electrolysis produces H
+, the cathodic area denitrification process produces alkali, and the water in cathodic area is back to the positive column can play the pH value effect of regulating.
Said positive electrode material selection conductivity is good, electropotential is higher than the water electrolysis oxygen evolution potential, is difficult for oxidized nonreactant again, like inert metal materials such as nickel, copper, titaniums.Said negative electrode material is selected stable performance, shaggy carbonaceous or other material, like graphite, carbon-point, NACF felt or stainless (steel) wire.Described third electrode, the conducting particles of promptly filling in the cathode zone is selected the material that resistance is less, physical strength is high, physicochemical property is stable, like activated carbon granule, hard coal etc.
Positive column and cathodic area demarcation membrane material adopt the hydrophilic film material that can intercept gas transfer, have certain water-permeable and ion handling capacity, like FM, aromatic polyamide or pvdf etc.
The microbe carrier stuffing that anode region is filled is insulating material such as elastic filler, soft-filler or floating stuffing.
Interpole gap is 1 ~ 8cm.Interpole gap is too big, and the current efficiency of reactor drum can reduce, and increases energy consumption.
The electrode biomembrane method is the process that an electrochemical action and biological action are coupled, and reaction principle is following:
In the electrode biomembrane reactor drum, anode electrolysis water generates O
2, form aerobic environment at anode region, and electron acceptor(EA) is provided for biological nitrification, supply the nitrobacteria growth of positive column, with CO
2, CO
3 2-, HCO
3 -As carbon source, carry out nitration reaction:
55NH
4 ++76O
2+109HCO
3 -→C
5H
7O
2N+54NO
2-+57H
2O+104H
2CO
3
400NO
2 -+NH
4 ++4H
2CO
3+195O
2+HCO
3 -→C
5H
7O
2N+400NO
3 -+3H
2O
In the electrode biomembrane reactor drum, catholyte water generates H
2, form the hypoxic/anaerobic environment at cathode zone, and, supply to be fixed on the denitrifying bacteria utilization on cathode surface and third electrode surface for biological denitrification provides electron donor, carry out denitrification denitrogenation:
NO
3 -+3[H]→0.5N
2+0H
-+H
2O
NO
2 -+5[H]→0.5N
2+0H
-+2H
2O
Mikrobe just can make full use of electrolysate and carries out the nitrification and denitrification denitrogenation in the reactor drum like this.The utility model can be used for the denitrogenation processing of low ratio of carbon to ammonium high ammonia-nitrogen wastewater, existing a small amount of or not having under the condition of organic carbon source, can realize the removal to ammonia nitrogen; The biochemical reaction process of complicacy is controlled with simple current setting; The product cleaning, energy consumption is low, and is simple in structure; Easy to operate, cheap for manufacturing cost.
The utility model is a process object with the low ratio of carbon to ammonium high ammonia-nitrogen wastewater, adopts the three-diemsnional electrode biofilm reactor, the positive column water inlet, and the cathodic area water outlet in same reactor drum, combines the biological nitration denitrification with electrochemical oxidation process.Nitrification mainly takes place in anode region, and denitrification mainly takes place cathode zone.Under following control condition: the influent ammonia nitrogen volumetric loading is less than 1.5kgN/ (m
3D), C/N is 0 ~ 3, and temperature is controlled at 25 ~ 35 ℃, and water inlet pH value is 6.5 ~ 8.0, and hydraulic detention time is greater than 12h, and current density is less than 0.021mA/cm
2The time, can realize the electrode biomembrane denitrification process preferably, the water outlet nitrogen removal rate is more than 70%.
Below providing a specific embodiment describes to help understanding the utility model.
Simulation ammonia nitrogen waste water (NH with the manual work preparation
4 +-N concentration is 100mg/L) be that research object, employing volume are that the synthetic glass cylinder of 12.7L is a reactor drum.Adopt cellulose acetate film to be separated out positive column and cathodic area.Anode is a long 55cm, and the titanium rod of diameter 1cm places positive column (also being) reactor drum central authorities, useful area 157.1cm
2Common filter pulp is filled as microbe carrier in the positive column.Negative electrode adopts the NACF felt, is close to reactor wall, useful area 2513cm
2Activated carbon granule and granulated glass sphere are filled in the cathodic area, fill ratio 8:2 (volume ratio), and wherein gac is the ature of coal cylindrical particle, column length 2 ~ 7mm, particle diameter 2 ~ 3mm, granulated glass sphere particle diameter 2 ~ 3mm, packing height 30cm.Interelectrode distance is 8cm.
Among the artificial distribution with K
2HPO
4And KH
2PO
4Be buffer reagent, C/N is 0.5, and as organic carbon source, temperature maintenance is about 30 ℃ with sodium acetate, and pH is about 7.8 in water inlet, and suitable trace element supplement.At D.C. regulated power supply output voltage 10V, current density is 0.013mA/cm
2, hydraulic detention time is the processing of carrying out the low ratio of carbon to ammonium high ammonia-nitrogen wastewater under the condition of 24h.Water quality NH after the processing
4 +-N clearance is more than 90%, and the TN clearance is more than 70%.
Claims (5)
1. three-diemsnional electrode biofilm reactor; It comprises reactor body (1); It is characterized in that: said reactor body (1) is provided with in reactor body (1) and the concentric barrier film of reactor body (5) for the band cylindrical structure at the end, and barrier film is divided into two portions with the reactor drum inner compartment; Border circular areas in the barrier film is an anode region, and the annular region between the outer and reactor body inwall of barrier film is a cathode zone; Be filled with microbe carrier stuffing (9) at anode region, and be provided with positive electrode (2) at the center; Be provided with negative potential (3) at cathode zone, negative potential is close to the reactor body inwall, and at cathode zone filled conductive particle (4) as third electrode, negative potential (3) and conducting particles (4) are simultaneously as microbe carrier; The anode region bottom is provided with water inlet pipe (6), and cathode zone is provided with rising pipe (7), and rising pipe is located at reactor body upper end outer wall.
2. three-diemsnional electrode biofilm reactor according to claim 1; It is characterized in that: be provided with return line (8) at reactor body (1) outer wall middle part; Return line (8) is communicated with water inlet pipe (6), and return line is used for the water section of cathode zone is back to anode region.
3. three-diemsnional electrode biofilm reactor according to claim 1 and 2 is characterized in that: said positive electrode (2) is the inert metal material; Said negative potential (3) is graphite, carbon-point, NACF felt or stainless (steel) wire; Said conducting particles (4) is activated carbon granule or hard coal.
4. three-diemsnional electrode biofilm reactor according to claim 3 is characterized in that: said barrier film (5) is a hydrophilic film, and has the gas of obstruct ability, and this hydrophilic film is FM, aromatic polyamide or pvdf.
5. three-diemsnional electrode biofilm reactor according to claim 4 is characterized in that: the microbe carrier stuffing (9) that anode region is filled adopts elastic filler, soft-filler or the floating stuffing that is made up of insulating material.
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|---|---|---|---|
| CN2011204667904U CN202322491U (en) | 2011-11-22 | 2011-11-22 | Three-dimensional electrode biological film reactor |
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|---|---|---|---|
| CN2011204667904U CN202322491U (en) | 2011-11-22 | 2011-11-22 | Three-dimensional electrode biological film reactor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491515A (en) * | 2011-11-22 | 2012-06-13 | 重庆大学 | Three-dimensional electrode bio-membrane system used for processing high-ammonium-nitrogen wastewater with low carbon-nitrogen ratio |
| CN102838188A (en) * | 2012-08-22 | 2012-12-26 | 青岛海安生物环保有限公司 | Method for treating high-concentration organic waste water by using strengthened micro-electrolysis technology |
| CN104787977A (en) * | 2015-04-17 | 2015-07-22 | 湖南大学 | Continuous flow integrated electrode bio-membrane reactor and nitrate removal technology |
| CN106630117A (en) * | 2016-12-16 | 2017-05-10 | 北京泷涛环境科技有限公司 | Three-dimensional electrode-biological membrane combined method for degrading organic pollutants and performing denitrification |
| CN106630116A (en) * | 2016-12-13 | 2017-05-10 | 华南理工大学 | Method for strengthening micro-bioelectrochemistry denitrification and continuous flow bioelectrochemistry reaction device with large cathode chamber |
| CN106698682A (en) * | 2017-02-21 | 2017-05-24 | 哈尔滨工业大学 | Construction method of microorganism electrochemical system anode biological membrane |
| CN108217861A (en) * | 2018-04-11 | 2018-06-29 | 辽宁清铎环保科技有限公司 | A kind of internal-circulation type electrocatalysis oxidation reaction device and method for cleaning treatment of sewage |
| CN108570689A (en) * | 2018-04-24 | 2018-09-25 | 大连交通大学 | Electrolysis prepares the device and method of chlorine dioxide |
| CN110015723A (en) * | 2019-05-08 | 2019-07-16 | 山西大学 | A kind of catalysis reaction apparatus for waste water treatment |
| CN115093011A (en) * | 2022-06-17 | 2022-09-23 | 天津正达科技有限责任公司 | Biological electrochemistry integration denitrogenation reactor |
| CN115947446A (en) * | 2023-01-03 | 2023-04-11 | 四川轻化工大学 | Nitrogen-containing strong salt wastewater treatment device |
-
2011
- 2011-11-22 CN CN2011204667904U patent/CN202322491U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491515B (en) * | 2011-11-22 | 2013-10-02 | 重庆大学 | Three-dimensional electrode bio-membrane system used for processing high-ammonium-nitrogen wastewater with low carbon-nitrogen ratio |
| CN102491515A (en) * | 2011-11-22 | 2012-06-13 | 重庆大学 | Three-dimensional electrode bio-membrane system used for processing high-ammonium-nitrogen wastewater with low carbon-nitrogen ratio |
| CN102838188A (en) * | 2012-08-22 | 2012-12-26 | 青岛海安生物环保有限公司 | Method for treating high-concentration organic waste water by using strengthened micro-electrolysis technology |
| CN104787977A (en) * | 2015-04-17 | 2015-07-22 | 湖南大学 | Continuous flow integrated electrode bio-membrane reactor and nitrate removal technology |
| CN106630116A (en) * | 2016-12-13 | 2017-05-10 | 华南理工大学 | Method for strengthening micro-bioelectrochemistry denitrification and continuous flow bioelectrochemistry reaction device with large cathode chamber |
| CN106630116B (en) * | 2016-12-13 | 2020-05-22 | 华南理工大学 | Method for strengthening microbial electrochemical denitrification and large cathode chamber continuous flow bioelectrochemical reaction device |
| CN106630117A (en) * | 2016-12-16 | 2017-05-10 | 北京泷涛环境科技有限公司 | Three-dimensional electrode-biological membrane combined method for degrading organic pollutants and performing denitrification |
| CN106698682B (en) * | 2017-02-21 | 2020-05-22 | 哈尔滨工业大学 | Construction method of anode biofilm of microbial electrochemical system |
| CN106698682A (en) * | 2017-02-21 | 2017-05-24 | 哈尔滨工业大学 | Construction method of microorganism electrochemical system anode biological membrane |
| CN108217861A (en) * | 2018-04-11 | 2018-06-29 | 辽宁清铎环保科技有限公司 | A kind of internal-circulation type electrocatalysis oxidation reaction device and method for cleaning treatment of sewage |
| CN108217861B (en) * | 2018-04-11 | 2024-01-26 | 辽宁清铎环保科技有限公司 | Internal circulation type electrocatalytic oxidation reactor and sewage purification treatment method |
| CN108570689A (en) * | 2018-04-24 | 2018-09-25 | 大连交通大学 | Electrolysis prepares the device and method of chlorine dioxide |
| CN110015723B (en) * | 2019-05-08 | 2021-09-28 | 山西大学 | Catalytic wastewater treatment reaction device |
| CN110015723A (en) * | 2019-05-08 | 2019-07-16 | 山西大学 | A kind of catalysis reaction apparatus for waste water treatment |
| CN115093011A (en) * | 2022-06-17 | 2022-09-23 | 天津正达科技有限责任公司 | Biological electrochemistry integration denitrogenation reactor |
| CN115093011B (en) * | 2022-06-17 | 2023-11-07 | 天津正达科技有限责任公司 | Bioelectrochemistry integrated nitrogen removal reactor |
| CN115947446A (en) * | 2023-01-03 | 2023-04-11 | 四川轻化工大学 | Nitrogen-containing strong salt wastewater treatment device |
| CN115947446B (en) * | 2023-01-03 | 2024-04-16 | 四川轻化工大学 | Nitrogen-containing concentrated salt wastewater treatment device |
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Legal Events
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|---|---|---|---|
| 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: 20120711 Termination date: 20131122 |