CN110294525A - A kind of microorganisms of nitrogen and phosphors removal fuel cell - Google Patents

A kind of microorganisms of nitrogen and phosphors removal fuel cell Download PDF

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Publication number
CN110294525A
CN110294525A CN201910520775.4A CN201910520775A CN110294525A CN 110294525 A CN110294525 A CN 110294525A CN 201910520775 A CN201910520775 A CN 201910520775A CN 110294525 A CN110294525 A CN 110294525A
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China
Prior art keywords
denitrification
anode
cathode
nitrification
nitrogen
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CN201910520775.4A
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Chinese (zh)
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CN110294525B (en
Inventor
张语航
邱梦雅
董跃
窦智
赵燕荣
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Hohai University HHU
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Hohai University HHU
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/005—Combined electrochemical biological processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

The invention discloses a kind of microorganisms of nitrogen and phosphors removal fuel cell, including gravel layer, the bottom of gravel layer is equipped with water inlet, and top is equipped with water outlet；Kind is implanted with the wetland plant for capableing of dephosphorization on gravel layer；Nitrification anode, nitrification cathode, denitrification anode and denitrification cathode are equipped in gravel layer, the microorganism for capableing of decomposing organic matter is attached on nitrification anode and denitrification anode, it is attached with the microorganism that can nitrify ammonia nitrogen on nitrification cathode, the microorganism for capableing of denitrification NO3-N and NO2-N is attached on denitrification cathode；Nitrification anode by the first external circuit by electron-transport that nitration reaction generates to nitrifying cathode, denitrification anode passes through electron-transport that the second external circuit generates anti-nitration reaction to denitrification cathode.Present invention process is simple, high treating effect, while energy consumption is lower with operating cost, and service life is longer, easy to maintenance.

Description

A kind of microorganisms of nitrogen and phosphors removal fuel cell
Technical field
The present invention relates to a kind of microorganisms of nitrogen and phosphors removal fuel cells, belong to raw technical field of microbial fuel battery.
Background technique
Currently, sewage denitrification and dephosphorization technology is based on bioanalysis and chemical precipitation method, but these technologies are in actual motion Process can generate and largely be difficult to the sludge disposed, and conventional denitrification process needs to add carbon source, and operational management is number It is tired.A kind of synchronous denitrification and dephosphorization process for city sewage how is studied, its simple process, high treating effect, while energy consumption are made Lower with operating cost, service life is longer, easy to maintenance, is current technical problem urgently to be solved.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of microorganisms of nitrogen and phosphors removal fuel cell is provided, Denitrogenation dephosphorizing can be carried out to sewage, reduce sewage treatment energy consumption and operating cost.
In order to achieve the above objectives, the present invention adopts the following technical solutions realization:
The bottom of a kind of microorganisms of nitrogen and phosphors removal fuel cell, including gravel layer, the gravel layer is equipped with water inlet, and top is equipped with Water outlet；Kind is implanted with the wetland plant for capableing of dephosphorization on the gravel layer；
It is equipped with nitrification anode, nitrification cathode, denitrification anode and denitrification cathode in the gravel layer, the nitrification anode and instead It is attached with the microorganism for capableing of decomposing organic matter on nitrification anode, is attached with the micro- life that can nitrify ammonia nitrogen on the nitrification cathode Object is attached with the microorganism for capableing of denitrification NO3-N and NO2-N on the denitrification cathode；
The nitrification anode is by the first external circuit by electron-transport that nitration reaction generates to nitrifying cathode, the denitrification The electron-transport that anode is generated anti-nitration reaction by the second external circuit is to denitrification cathode.
Further, porous air manifold tube is additionally provided in the gravel layer, the porous air manifold tube is connected by gas-guide tube to expose Air pump.
Further, the water outlet source is also connected with the return pipe being connected with water inlet.
Preferably, the nitrification anode, nitrification cathode, denitrification anode and/or denitrification cathode are that stainless (steel) wire outsourcing is led Electrical carbon felt and electrode slice made of being sewed with stainless steel wire.
Preferably, the nitrification anode, nitrification cathode are electrically connected place with the first external circuit, and or, the denitrification is positive Pole, denitrification cathode are coated with the glass cement for sealing corrosion with the second external circuit place of electrical connection.
Further, first external circuit and/or the second external circuit include the resistance that both ends lead to conducting wire, institute Resistance is stated to be electrically connected by conducting wire with respective electrode.
Preferably, the gravel layer with a thickness of 80 ~ 100cm, the partial size of gravel is 8 ~ 10cm.
Preferably, the nitrification anode, denitrification anode, denitrification cathode, nitrification cathode are set in sequence from bottom to up, respectively Electrode is parallel to each other.
Preferably, the nitrification anode is 3 ~ 5cm at a distance from denitrification anode；Denitrification anode and denitrification cathode Distance be 20 ~ 25cm；Denitrification cathode is 20 ~ 25cm at a distance from nitrification cathode.
Preferably, the wetland plant is canna, Lythrum salicaria, a kind of, combination of two or more in calamus.
Compared with prior art, advantageous effects of the invention: the present invention passes through with the wetland plant for capableing of dephosphorization Object, the microorganism for capableing of decomposing organic matter, the microorganism that ammonia nitrogen can be nitrified and it is capable of denitrification NO3-N and NO2-N Microorganism, while organic matter, ammonia nitrogen substances, the NO3-N and NO2-N in water are effectively treated, while at above-mentioned place Reason process does not use the external energy, and treatment process is the spontaneous generation of system, so greatly reducing energy consumption.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the microorganisms of nitrogen and phosphors removal fuel cell provided according to embodiments of the present invention.
In figure: 1, water inlet；2, water outlet；3, anode is nitrified；4, denitrification anode；5, denitrification cathode；6, nitrification yin Pole；7a, 7b: resistance；8a, 8b: conducting wire；9, gravel layer；10, wetland plant；11, aeration pump；12, gas-guide tube；13, porous cloth Tracheae.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, nitrification anode 3, denitrification anode 4, denitrification cathode 5, nitrification cathode 6 are sequentially set from bottom to up It sets, each electrode is parallel to each other, and wetland plant 10 is planted above gravel layer 9, and porous air manifold tube 13 is arranged in wetland plant 10 and nitre Change between cathode 6, nitrification anode 3, nitrification cathode 6, denitrification anode 4 and denitrification cathode 5 are stainless (steel) wire outsourcing conductive carbon Felt and electrode slice made of being sewed with stainless steel wire.
The sewage to be processed ground water inlet 1 below system enters system, in a manner of up-flow vertical current, in gravel layer 9 Buffer function under, sewage slowly flows up, successively by nitrification anode 3, denitrification anode 4, denitrification cathode 5, nitre Change cathode 6, organic matter in polluted-water is decomposed by the microorganism adhered on nitrification anode 4 and denitrification anode 5, mistake The electronics generated in journey is transmitted to cathode through respective external circuit, by the microorganism that adheres on denitrification cathode 5 to contaminant water NO3-N and NO2-N in body carries out denitrification removal, by nitrifying the microorganism adhered on cathode 6 in polluted-water Ammonia nitrogen nitrified, sewage continues up flowing, is now placed in wetland plant 10 at the top of gravel layer and absorbs phosphorus in sewage It is removed.
The first external circuit for being connected to nitrification anode 3, nitrification cathode 6 includes: resistance 7a and draws from the both ends resistance 7a Conducting wire 8a out, the second external circuit for being connected to denitrification anode 4, denitrification cathode 5 include: resistance 7b and from resistance 7b Double-end conducting wire 8b, resistance 7a, 7b are used to prevent short circuit.Nitrify anode 3, nitrification cathode 6, denitrification anode 4, anti-nitre Change cathode 5 and is coated with the glass cement for being used for sealing corrosion with the place of electrical connection of external circuit.
2 source of water outlet is also connected with the return pipe (not shown) being connected with water inlet 1.It will by water outlet 2 Water export that treated and part import water inlet 1 and flow back, and further carry out nitrogen phosphorus ligands to polluted-water.
In order to carry out sufficiently effective chemical reaction, should be arranged nitrification anode 3 with denitrification anode 4 at a distance from be 3 ~ 5cm, preferably: 5cm；Denitrification anode 4 is 20 ~ 25cm at a distance from denitrification cathode 5, preferably: 25cm；Denitrification cathode 5 with The distance for nitrifying cathode 6 is 20 ~ 25cm, preferably: 25cm.
The setting of porous air manifold tube 13 is on the one hand to nitrify required sky between wetland plant 10 and nitrification cathode 6 On the other hand gas is conducive to the growth of wetland plant 10.
In order to play the role of well buffer sewage, gravel layer with a thickness of 80 ~ 100cm, preferably: 100cm；Gravel Partial size is 8 ~ 10cm, preferably: 8cm.Wetland plant 10 can be a kind of, two or more groups in canna, Lythrum salicaria, calamus It closes.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations Also it should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of microorganisms of nitrogen and phosphors removal fuel cell, which is characterized in that including gravel layer, the bottom of the gravel layer be equipped with into The mouth of a river, top are equipped with water outlet；Kind is implanted with the wetland plant for capableing of dephosphorization on the gravel layer；
It is equipped with nitrification anode, nitrification cathode, denitrification anode and denitrification cathode in the gravel layer, the nitrification anode and instead It is attached with the microorganism for capableing of decomposing organic matter on nitrification anode, is attached with the micro- life that can nitrify ammonia nitrogen on the nitrification cathode Object is attached with the microorganism for capableing of denitrification NO3-N and NO2-N on the denitrification cathode；
The nitrification anode is by the first external circuit by electron-transport that nitration reaction generates to nitrifying cathode, the denitrification The electron-transport that anode is generated anti-nitration reaction by the second external circuit is to denitrification cathode.
2. microorganisms of nitrogen and phosphors removal fuel cell according to claim 1, which is characterized in that be additionally provided in the gravel layer Porous air manifold tube, the porous air manifold tube connect aeration pump by gas-guide tube.
3. microorganisms of nitrogen and phosphors removal fuel cell according to claim 1, which is characterized in that the water outlet source also connects It is connected to the return pipe being connected with water inlet.
4. microorganisms of nitrogen and phosphors removal fuel cell according to claim 1, which is characterized in that the nitrification anode, nitrification Electrode made of cathode, denitrification anode and/or denitrification cathode are stainless (steel) wire outsourcing conduction carbon felt and are sewed with stainless steel wire Piece.
5. microorganisms of nitrogen and phosphors removal fuel cell according to claim 1, which is characterized in that the nitrification anode, nitrification Cathode is electrically connected place with the first external circuit, and or, the denitrification anode, denitrification cathode are electrically connected with the second external circuit Place is coated with the glass cement for sealing corrosion.
6. microorganisms of nitrogen and phosphors removal fuel cell according to claim 5, which is characterized in that first external circuit and Or second external circuit include resistance that both ends lead to conducting wire, the resistance is electrically connected by conducting wire with respective electrode.
7. microorganisms of nitrogen and phosphors removal fuel cell according to claim 1, which is characterized in that the gravel layer with a thickness of 80 ~ 100cm, the partial size of gravel are 8 ~ 10cm.
8. microorganisms of nitrogen and phosphors removal fuel cell according to claim 1, which is characterized in that the nitrification anode, anti-nitre Change anode, denitrification cathode, nitrification cathode to be set in sequence from bottom to up, each electrode is parallel to each other.
9. microorganisms of nitrogen and phosphors removal fuel cell according to claim 8, which is characterized in that the nitrification anode and anti-nitre The distance for changing anode is 3 ~ 5cm；Denitrification anode is 20 ~ 25cm at a distance from denitrification cathode；Denitrification cathode and nitrification yin The distance of pole is 20 ~ 25cm.
10. microorganisms of nitrogen and phosphors removal fuel cell according to any one of claims 1 to 9, which is characterized in that the wetland Plant is canna, Lythrum salicaria, a kind of, combination of two or more in calamus.
CN201910520775.4A 2019-06-17 2019-06-17 Nitrogen and phosphorus removal microbial fuel cell Active CN110294525B (en)

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