CN114210198A - Application of biological synergistic electrocatalytic reactor in nitrogen oxide reduction - Google Patents
Application of biological synergistic electrocatalytic reactor in nitrogen oxide reduction Download PDFInfo
- Publication number
- CN114210198A CN114210198A CN202111349290.7A CN202111349290A CN114210198A CN 114210198 A CN114210198 A CN 114210198A CN 202111349290 A CN202111349290 A CN 202111349290A CN 114210198 A CN114210198 A CN 114210198A
- Authority
- CN
- China
- Prior art keywords
- reactor
- iii
- microorganisms
- biological synergistic
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses an application of a biological synergistic electrocatalysis reactor in nitrogen oxide reduction, which comprises the following steps: s1, according to NOxCharacterized in that the solution for domesticating the microorganism is L-FeⅢSludge and L-Fe containing culture mediumⅢThe domestication liquid is injected into the biological synergistic electrocatalysis reactor, and the microorganism is domesticated by adopting a mode of changing liquid regularly. Compared with the traditional electrode biofilm reactor, the biological synergistic electrocatalysis reactor only needs to domesticate one L-FeⅢReducing bacteria, simplifying the microbial domestication process and shortening the starting time of the reactor; the catalytic bed layer has higher chemical stability, large specific surface area and uniform pore diameter, has good reduction performance under the electrochemical action, and can convert L-FeⅡ-direct reduction of NOTo L-FeⅡAnd ammonia, namely, the regeneration of the complexing absorbent is ensured, NO is removed, a nitrogen source is provided for microorganisms, and the running cost of the reactor is greatly saved.
Description
Technical Field
The invention relates to the field of environmental pollution control equipment, in particular to a preparation method of a catalytic bed layer of a biological synergistic electrocatalysis reactor.
Background
In recent years, the haze problem is receiving public attention, and the problem is solved by Nitrogen Oxide (NO)x) The problem of air pollution caused by continuous growth is imminent. Due to NO in the flue gasxMore than 90% of NO with extremely low solubility (NO solubility in water is only 4.7%), so that the complex absorption-biological reduction method is proposed by the scholars, and the method adopts a ferrous complex (hereinafter referred to as L-Fe for short)Ⅱ) As an absorbent, gaseous NO in the flue gas is converted into liquid L-FeⅡNO, recycling of L-Fe by microorganismsⅡReduction of-NO to L-FeⅡAnd non-polluting N2The process of (1) ensures regeneration of the absorbent and realizes NOxAnd (4) removing. The electrode biomembrane process is based on the method and coupled with electrochemical effect, and further strengthens NOxThe removal process of (1). But the higher oxygen concentration (more than or equal to 9 percent) in the flue gas can lead the L-Fe to be mixedⅡOxidized to a trivalent iron complex (hereinafter referred to as L-Fe) having NO ability to complex NOⅢ) Therefore, for the NO removal process, the reduced L-Fe is selected and bred firstIIIOf (2) a highly effective strain, i.e. the presence of reduced L-Fe in the reactorⅡ-NO and L-FeIIITwo reducing bacteria of (1). Earlier studies show that ammonia nitrogen is the best nitrogen source for the growth of the two microorganisms, and the lack of the nitrogen source directly influences NOxThe treatment effect is good, and the cost for directly supplementing the nitrogen source is high, so that for the electrode biofilm reactor, how to improve the microbial activity and further improve NOxProcessing efficiency has been an urgent problem to be solved. In response to the above problems, a utilization apparatus was developed and designedThe reactor has resources, and the part of the target pollutants is converted into the driving substance for the effective operation of the reaction system, so that the reactor which reduces the investment and is convenient to operate and manage has important practical significance. Chinese patent publication No. CN201634549U discloses a three-dimensional electrode biofilm reactor for regenerating nitrogen oxide complexing absorbent, which utilizes a mixed bacterial membrane on the surface of cathode conductive particles to simultaneously reduce EDTA-Fe in nitrogen oxide complexing absorbent products through the action of electrically-promoted microorganismsⅡ-NO and EDTA-FeⅢObtaining EDTA-FeⅡThe regeneration of the complexing absorbent is realized, and the energy consumption is low and the structure is simple. Although the reactor is green and efficient, the practical popularization and application of the reactor are limited due to the difficulty and high cost of microbial domestication.
Zeolite imidazole ester framework-like compounds (ZIFs) belong to one of common MOFs materials, have large specific surface area, high chemical stability and uniform pore size, and are widely applied to adsorption/separation, biomedicine and environmental management. The copper nanoparticles serving as the catalyst have the defects of easy oxidation, easy agglomeration and the like, the performance of the copper nanoparticles can be improved by loading the copper nanoparticles on an organic framework with a large specific surface area, and the copper nanoparticles can be loaded on ZIF-8 by utilizing the excellent performance of the ZIFs material and applied to the field of environmental pollution treatment. In the current stage, research discovers that the metal nanoparticles are loaded on the ZIF-8, and the obtained composite material has a certain reduction effect under the electrocatalysis effect. Therefore, on the basis, the material is applied to NOxTreatment of the field, NO input from the reaction system by electrocatalysisxReducing the ammonia nitrogen into ammonia Nitrogen (NH) which is easy to be utilized for the growth of microorganisms4 +-N) to achieve partial conversion of the target pollutant into a driver substance for efficient operation of the reaction system, with substantial savings in reactor operating costs, as NOxProvides a new way for resource utilization.
Disclosure of Invention
In order to use the biological synergetic electrocatalytic reactor for reducing nitrogen oxides, the invention provides an application of the biological synergetic electrocatalytic reactor in the reduction of the nitrogen oxides, and the specific technical scheme is as follows:
the application of a biological synergistic electrocatalytic reactor in nitrogen oxide reduction comprises the following steps:
s1, according to NOxCharacterized in that the solution for domesticating the microorganism is L-FeⅢSludge and L-Fe containing culture mediumⅢInjecting the domestication liquid into a biological synergistic electrocatalysis reactor, and domesticating the microorganisms by adopting a mode of changing liquid regularly;
s2, opening the peristaltic pump and the flowmeter, and controlling the circulation speed of the domestication liquid in the reactor by adjusting the display number of the flowmeter, wherein the flow rate is controlled to be 0.5-1.4 L.min-1；
S3, opening the adjustable DC stabilized voltage supply, and controlling the voltage to be 8-12V;
s4, when being L-FeⅢWhen the reduction efficiency is higher than 80 percent, injecting the well absorbed L-FeⅡ-a NO solution, with electrochemical assistance, reducing NO to ammonia available to the microorganisms using a catalytic material.
Preferably, the sludge is sourced from a denitrification tank of a municipal sewage treatment plant, the sludge is supplemented every 2-3 days in the initial stage of domestication, and the supplementation is stopped when visible microorganisms appear on the cathode conductive particles.
Preferably, L-Fe for domesticating microorganismsⅢThe solution concentration is 20-25 mmol.L-1。
Preferably, the solution for adjusting the pH value of the acclimatization solution is 50 g.L-1NaHCO of3。
Preferably, the medium used for culturing the microorganisms contains the following main components per liter of deionized water: glucose 2000mg, KH2PO4 1200mg，NaSO3 140mg，MgCl2 200mg，NaHCO3 10800mg，CuSO4·5H2O 20mg，ZnCl2 8mg。
The invention has the beneficial effects that:
(1) compared with the traditional electrode biofilm reactor, the biological synergistic electrocatalysis reactor only needs to domesticate one L-FeⅢReducing bacteria, simplifying the microbial domestication process and shortening the starting time of the reactor;
(2) the catalytic bed layer of the invention has higher conversionChemical stability, large specific surface area, uniform pore diameter, good reduction performance under electrochemical action, and capability of converting L-FeⅡDirect reduction of-NO to L-FeⅡAnd ammonia, namely, the regeneration of the complexing absorbent is ensured, NO is removed, a nitrogen source is provided for microorganisms, and the running cost of the reactor is greatly saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a reactor according to the present invention;
FIG. 2 is a schematic structural view of a catalytic bed of the present invention;
FIG. 3 is a graph of nitrite reduction of the CuNCS nanocomposite of the present invention;
FIG. 4 is a diagram of the reduction of nitrite by the biological synergistic electrocatalytic reactor of the present invention.
FIG. 5 is a diagram of reduction of complex NO in a biological synergistic electrocatalytic reactor.
Detailed Description
The following examples are illustrative and are not to be construed as limiting the invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
As shown in fig. 1 and 2, a biological synergetic electrocatalysis reactor comprises a reactor shell 1, a supporting sleeve 2 and a catalytic bed layer 3, wherein the supporting sleeve 2 is arranged in the middle of the reactor shell 1, an anode region is arranged in the supporting sleeve 2, a cathode region is arranged between the supporting sleeve 2 and the reactor shell 1, the catalytic bed layer 3 is connected with the inner wall of the supporting sleeve 2, as shown in fig. 2 and 3, the catalytic bed layer 3 comprises a load type CuNCS nanocomposite 31 and needles, the needles are alternately arranged and connected on the inner wall of the supporting sleeve 2, and the load type CuNCS nanocomposite 31 is fully distributed with holes matched with the needles.
The reactor is characterized in that a positive electrode 4 is arranged in the positive electrode area, negative electrodes 5 which are uniformly distributed and connected in series around the positive electrode 4 are arranged in the negative electrode area, conductive particles 6 are filled in the negative electrode area, microorganisms participating in reduction are attached to the conductive particles 6, an adjustable direct-current stabilized voltage power supply is respectively connected with the positive electrode 4 and the negative electrode 5 through wires, a flow meter 7 is respectively connected with an upper side wall pipe orifice 9 and a peristaltic pump 8 of the reactor main body, and the other end of the peristaltic pump 8 is connected with a lower side wall pipe orifice 10 of the reactor main body.
The supporting sleeve 25, the needle-shaped body and the load type CuNCS nano composite material 31 are in a three-dimensional cross-linked structure.
The material of spicule is organic glass, and reactor shell 1 and the 2 materials of supporting sleeve are organic glass and the shape is cylindrical, and the reactor top is equipped with sampling port 11.
The supporting sleeve 2 is cylindrical with uniform small holes and is connected with the bottom of the reactor shell 1.
The positive electrode 4 is a graphite electrode or other inert electrodes, and the negative electrode 5 is a graphite electrode, a metal electrode or other inert electrodes.
The number of the negative electrodes 5 is 4-6, and the negative electrodes are evenly distributed around the positive electrode 4.
The conductive particles 6 are graphite particles or activated carbon, and the filling height is 2/3 of the reactor height.
Example 1: research on electrocatalytic reduction of nitrite by CuNCS nano composite material
The method adopts sodium nitrite with similar chemical structure to simulate the complex NO in a reactor and tests the CuNCS NaNO composite material on NaNO under the electrochemical action2Reducing performance and ammonia yield.
Blank control group: preparation of 1 g.L-1NaNO of (2)2200mL of the solution is placed in a 250mL beaker, two graphite rods are arranged in the beaker as the positive and negative electrodes, and the current is 20mAnd A, sampling at regular intervals, and measuring the content of ammonia nitrogen in the solution at different times by adopting a national standard method.
Experimental groups: preparation of 1 g.L-1NaNO of (2)2Adding 0.031g of CuNCS nano composite material into 200mL of the solution as a catalyst, placing the solution into a 250mL beaker, arranging two graphite rods in the beaker as a positive electrode and a negative electrode, sampling at regular intervals under the current of 20mA, and measuring the content of ammonia nitrogen in the solution at different times by adopting a national standard method.
The results of the experiment are shown in FIG. 3, and it can be seen from the graph that under the condition of adding the CuNCS nanocomposite, the concentration of ammonia nitrogen in the solution increases with the increase of time before 100min, and the ammonia nitrogen concentration reaches 96.95 mg.L at the maximum at 100min-1. After 100min, the concentration of ammonia nitrogen in the solution slightly decreases. When the CuNCS nano composite material is not added, the ammonia nitrogen concentration reaches the maximum 10.77 mg.L at 120min-1And the solution is basically free of reduced ammonia nitrogen. The results show that CuNCS nanocomposite is paired with NO2 -Has obvious electrocatalytic reduction effect.
Example 2: performance study of supported CuNCS nanocomposite
(1) Biological synergistic electrocatalysis reactor and application thereof in reduction of nitrogen oxide to NO in flue gasxA method of performing a treatment comprising the steps of:
use of a bio-synergistic electrocatalytic reactor as described above for the treatment of nitrogen oxides in flue gases, wherein:
taking activated sludge from a denitrification tank of an urban sewage treatment plant, standing for 12-24h, and adding 15mL of precipitate into a reactor;
the solution for domesticating the microorganism is EDTA-FeⅢThe concentration is 20-25 mmol.L-1The pH value is 6.7-6.9;
the content of the culture medium for domesticating the microorganisms in the reactor is 50mL & L-1The deionized water contains the following components in each liter of deionized water: glucose 2000mg, KH2PO4 1200mg，NaSO3 140mg，MgCl2 200mg，NaHCO3 10800mg，CuSO4·5H2O 20mg，ZnCl2 8mg。
The positive and negative electrodes are cylindrical graphite rods, the number of the negative electrodes 5 is 4, the negative electrodes are connected in series by adopting a lead, and the cathode conductive particles 6 are graphite particles;
crosslinking the prepared load type CuNCS nano composite material 31 with the inner wall of a reactor supporting sleeve;
in the experimental process, a sodium nitrite solution is used for simulating NO, and the reduction performance of the supported CuNCS nano composite material under the electrochemical action is inspected.
(2) Adding sludge and EDTA-Fe containing culture medium into a biological reduction-electrocatalysis reactorⅢDomesticating liquid; the peristaltic pump 8 and the flow meter 7 are opened, and the flow rate of the circulating liquid is controlled to be 1.2 L.min-1(ii) a Opening the adjustable direct current stabilized power supply, and controlling the current to be 20 mA;
replacing the acclimatization solution in the biological reduction-electrocatalysis reactor at regular time when EDTA-FeⅢWhen the reduction efficiency is higher than 80%, the microbial acclimation is considered to be completed, and the reactor is successfully started;
after the reactor was successfully started up, the reactor nitrogen source supply was stopped and 1.24g of NaNO was added to the reactor2The reduction performance of the catalyst bed layer 3 was tested, and the result is shown in FIG. 4, in 10h of the reactor operation, EDTA-FeⅢGradually reduced while EDTA-Fe is present in the reactorⅡThe concentration gradually increased and maintained at 40 mg.L-1On the other hand, because the system does not add any form of nitrogen source, namely the catalytic bed layer 3 electrocatalytic reduces NaNO2The generated ammonia is enough to be used by microorganisms, so that the regeneration of the complexing absorbent can be ensured, and the NaNO can be used2The form reduced into ammonia is utilized by the microorganism, thus saving the operation cost.
Example 3: research on performance of reduction complex state NO of biological synergistic electrocatalysis reactor
After the biological reduction-electrocatalysis reactor domestication is finished, the prepared EDTA-FeⅢAnd EDTA-FeⅡ-adding the NO mixed solution into a reactor; the peristaltic pump 8 and the flow meter 7 are opened, and the flow rate of the circulating liquid is controlled to be 1.2 L.min-1(ii) a The adjustable DC stabilized power supply is turned on, the current is controlled to be 20mA, and the biological synergetic electrocatalytic reaction is testedThe reduction performance of the reactor is shown in FIG. 5, and the result is that EDTA-Fe is acted on by the electro-catalytic materialⅡAfter about 34h of conversion of-NO, EDTA-Fe in the system is reduced by microorganismsⅡThe content gradually increases. In the biological reduction-electrocatalysis reactor, NO is smoothly converted into ammonia, a nitrogen source is provided for the growth of microorganisms, the regeneration of the complexing absorbent is ensured, and the experimental cost is saved while NO is smoothly reduced.
The above embodiments are merely examples for clearly illustrating the embodiments and do not limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be made without departing from the scope of the invention.
Claims (5)
1. The application of the biological synergistic electrocatalytic reactor in nitrogen oxide reduction is characterized by comprising the following steps:
s1, according to NOxCharacterized in that the solution for domesticating the microorganism is L-FeⅢSludge and L-Fe containing culture mediumⅢInjecting the domestication liquid into a biological synergistic electrocatalysis reactor, and domesticating the microorganisms by adopting a mode of changing liquid regularly;
s2, opening the peristaltic pump and the flowmeter, and controlling the circulation speed of the domestication liquid in the reactor by adjusting the display number of the flowmeter, wherein the flow rate is controlled to be 0.5-1.4 L.min-1；
S3, opening the adjustable DC stabilized voltage supply, and controlling the voltage to be 8-12V;
s4, when being L-FeⅢWhen the reduction efficiency is higher than 80 percent, injecting the well absorbed L-FeⅡ-a NO solution, with electrochemical assistance, reducing NO to ammonia available to the microorganisms using a catalytic material.
2. The use of a biological synergistic electrocatalytic reactor as set forth in claim 1 in nitrogen oxide reduction, wherein said sludge is derived from a denitrification tank of a municipal sewage treatment plant, the sludge is replenished every 2-3 days during the initial stage of acclimation, and the replenishment is stopped when macroscopic microorganisms appear on the cathode conductive particles.
3. Use of a biological synergistic electrocatalytic reactor as claimed in claim 1, characterized by L-Fe for acclimatization of microorganisms for nitrogen oxide reductionⅢThe solution concentration is 20-25 mmol.L-1。
4. The use of a biological synergistic electrocatalytic reactor as set forth in claim 1, wherein the solution for adjusting the pH of the acclimatizing solution is 50 g-L-1NaHCO of3。
5. The use of a biological synergistic electrocatalytic reactor as set forth in claim 1 in nitrogen oxide reduction, wherein the culture medium used to culture the microorganisms contains the following major components per liter of deionized water: glucose 2000mg, KH2PO4 1200mg，NaSO3 140mg，MgCl2 200mg，NaHCO3 10800mg，CuSO4·5H2O 20mg，ZnCl28mg。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111349290.7A CN114210198A (en) | 2021-11-15 | 2021-11-15 | Application of biological synergistic electrocatalytic reactor in nitrogen oxide reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111349290.7A CN114210198A (en) | 2021-11-15 | 2021-11-15 | Application of biological synergistic electrocatalytic reactor in nitrogen oxide reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114210198A true CN114210198A (en) | 2022-03-22 |
Family
ID=80697183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111349290.7A Pending CN114210198A (en) | 2021-11-15 | 2021-11-15 | Application of biological synergistic electrocatalytic reactor in nitrogen oxide reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114210198A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1022201A (en) * | 1996-07-04 | 1998-01-23 | Nikon Corp | Device for detecting alignment mark |
| CN101172742A (en) * | 2007-10-23 | 2008-05-07 | 浙江大学 | Method for reducing Fe(III)EDTA in solution and uses thereof |
| CN101810983A (en) * | 2010-03-12 | 2010-08-25 | 浙江大学 | Method for regenerating nitrogen oxide complexed absorption liquid in smoke denitration |
| CN102553434A (en) * | 2012-03-06 | 2012-07-11 | 浙江大学 | Device and method for purifying nitrogen oxides in flue gas by utilizing electrode biological membrane |
| CN112695000A (en) * | 2021-02-01 | 2021-04-23 | 郑州轻工业大学 | Strain for reducing complex state ferric iron and application thereof |
-
2021
- 2021-11-15 CN CN202111349290.7A patent/CN114210198A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1022201A (en) * | 1996-07-04 | 1998-01-23 | Nikon Corp | Device for detecting alignment mark |
| CN101172742A (en) * | 2007-10-23 | 2008-05-07 | 浙江大学 | Method for reducing Fe(III)EDTA in solution and uses thereof |
| CN101810983A (en) * | 2010-03-12 | 2010-08-25 | 浙江大学 | Method for regenerating nitrogen oxide complexed absorption liquid in smoke denitration |
| CN102553434A (en) * | 2012-03-06 | 2012-07-11 | 浙江大学 | Device and method for purifying nitrogen oxides in flue gas by utilizing electrode biological membrane |
| CN112695000A (en) * | 2021-02-01 | 2021-04-23 | 郑州轻工业大学 | Strain for reducing complex state ferric iron and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103288213B (en) | Whole-process autotrophic nitrogen removal method and device | |
| CN108314184B (en) | Method for promoting start of anaerobic reactor | |
| CN110330200A (en) | A kind of method that CNTs-Ni-Fe3O4 promotes anaerobic digestion process and improves methane phase efficiency | |
| CN113683188B (en) | Method and device for electrochemically domesticating anaerobic ammonium oxidation bacteria | |
| CN102553434A (en) | Device and method for purifying nitrogen oxides in flue gas by utilizing electrode biological membrane | |
| CN109179938A (en) | A kind of anaerobe electrochemical treatments technique promoting anaerobic sludge digestion and cathode carbon dioxide reduction based on anode | |
| CN104261559A (en) | Novel reactor for generating methane by anaerobic and digestion of upflow sleeve through micro-organism electrolysis strengthening, and method for treating waste liquid by using same | |
| CN106116019B (en) | A kind of membraneless microbiological fuel cell-void tower formula catalytic oxidation-membrane bioreactor coupled system | |
| CN102219299A (en) | Wastewater anaerobic oxidation and negative oxygen ion coupled generation device and method | |
| CN113430234B (en) | Method for producing medium-chain fatty acid by using external potential to strengthen anaerobic microorganisms | |
| CN216712108U (en) | Device for rapidly enriching and culturing anaerobic ammonium oxidation bacteria | |
| CN104860397A (en) | Electrochemical-biological fluidized bed reactor and wastewater treatment method | |
| CN109680289B (en) | Coupling type bioelectrochemistry hydrogen production and purification device and system and hydrogen production method | |
| CN103865957B (en) | A kind of method combining hydrogen-producing acetogens and product electricity bacterium enhanced biological hydrogen manufacturing usefulness | |
| CN104045158A (en) | Intensifying sewage whole-course autotrophic nitrogen removal reactor and intensifying sewage whole-course autotrophic nitrogen removal method | |
| CN106946351A (en) | A kind of self power generation micro-current organic matter degradation device and its application | |
| CN114210198A (en) | Application of biological synergistic electrocatalytic reactor in nitrogen oxide reduction | |
| CN104577171A (en) | Efficient dephosphorization and nitrification microbial fuel cell with external magnetic field | |
| CN103601347A (en) | Domestic sewage treatment method and UAFB-EGSB coupled system quick start method | |
| CN204737787U (en) | Electrochemistry - biological fluidized bed reactor | |
| CN106011017B (en) | method for realizing rapid proliferation of anaerobic ammonium oxidation bacteria | |
| CN210825887U (en) | System for handle mud heavy metal | |
| CN111705052B (en) | Anaerobic immobilized microbial agent, preparation method and application thereof | |
| CN114210182B (en) | Biological cooperative electrocatalytic reactor | |
| CN203826484U (en) | Biological electric catalytic inverse conversion reactor of microbial fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |