CN108448144A - A kind of microbiological fuel cell - Google Patents
A kind of microbiological fuel cell Download PDFInfo
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- CN108448144A CN108448144A CN201810203958.9A CN201810203958A CN108448144A CN 108448144 A CN108448144 A CN 108448144A CN 201810203958 A CN201810203958 A CN 201810203958A CN 108448144 A CN108448144 A CN 108448144A
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- 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
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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
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- 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
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- Water Treatment By Electricity Or Magnetism (AREA)
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- Fuel Cell (AREA)
Abstract
The present invention provides a kind of microbiological fuel cell, including first anode room, cathode chamber and the second plate room set gradually, it is separated respectively by cation-exchange membrane and anion-exchange membrane, first anode room and second plate room are also interconnected, and the first anode, cathode and second plate are separately connected；It is inoculated on the first anode with the active microorganism of electricity production or activated sludge, abiotic catalyst is provided on cathode, it is inoculated with microorganism or activated sludge with nitrification activity in the indoor catholyte of cathode, is inoculated with while having microorganism or the activated sludge of electricity production and denitrification activity on second plate.The present invention ensure that the environmental optima of efficiency of fuel cell generation, nitrification efficiency and denitrification efficiency respectively, on the basis of useless Organic substance in water effectively removes, also ensure effectively removing for nitrogen in waste water.
Description
Technical field
The present invention relates to field of microbial electromechanical technology, and in particular to a kind of microbiological fuel cell.
Background technology
Currently, with the fast development of China's economy, increasingly frequent industrial production activities and mankind's activity cause sternly
The water pollution of weight, while also consuming a large amount of energy；Current water pollution has become restriction China with energy shortages can
The critical issue of sustainable development.
Microbiological fuel cell (Microbial Fuel Cell, MFC), is a kind of novel clean energy technology, is utilized
Electricity-producing microorganism degrade organic pollutants and by its chemical energy converted in-situ be electric energy.It is handled using microbiological fuel cell
Waste water not only realizes effectively removing for organic matter, moreover it is possible to directly convert chemical energy to electric energy, both solve at traditional wastewater
High energy consumption and the big disadvantage of sludge yield are managed, and can effectively recycle the potential chemical energy of large amount of organic in sewage, is gradually applied
In field of waste water treatment.
In practical applications, although traditional microbiological fuel cell, which realizes, effectively removes useless Organic substance in water,
But still not satisfactory to the nitrogen removal effect in waste water, especially to the removal of nitrate anion, and its removal rate is also remote
Far from meet demand.
Invention content
The present invention provides a kind of microbiological fuel cell, can not be to useless to solve microbiological fuel cell in the prior art
The problem of nitrogen in water effectively removes.
The embodiment of the present invention provides a kind of microbiological fuel cell, including set gradually first anode room, cathode chamber and
Second plate room, the first anode room and the cathode chamber are separated by cation-exchange membrane, the cathode chamber and described
Two anode chambers are separated by anion-exchange membrane, and the first anode room and the second plate room are also interconnected；Positioned at institute
The indoor first anode of the first anode is stated, the indoor cathode of the cathode is located at and is located at the second plate indoor second
Anode is separately connected；
It is inoculated on the first anode with active microorganism or activated sludge is produced electricity, is provided on the cathode non-
Biocatalyst, is inoculated with microorganism or activated sludge with nitrification activity in the indoor catholyte of cathode, and described
Microorganism or the activated sludge of electricity production and denitrification activity are inoculated with while had on two anodes.
As the preferred embodiment of the present invention, the first anode room includes the first water inlet and the first water outlet, and described the
Two anode chambers include the second water inlet and the second water outlet, wherein first water outlet and second water inlet pass through conduit
Connection, first water inlet are connect with external wastewater supplying device.
As the preferred embodiment of the present invention, the indoor anolyte of the first anode and the indoor anode of the second plate
The concentration of dissolved oxygen is 0.05~0.1mg/L in liquid.
Be provided with aeration tube as the preferred embodiment of the present invention, in the cathode chamber, the other end of the aeration tube with it is outer
The air pump in portion connects.
As the preferred embodiment of the present invention, it is additionally provided with gas flowmeter between the aeration tube and the air pump, is led to
It is 10~50ml/min to cross the gas flowmeter control aeration quantity.
As the preferred embodiment of the present invention, the abiotic catalyst being arranged on the cathode is that Pt or nitrogen-doped graphene are urged
Agent.
As the preferred embodiment of the present invention, the catholyte is inorganic salt solution or inorganic salt containing nitrogen solution.
As the preferred embodiment of the present invention, the culture of the first anode room, the cathode chamber and the second plate room
Temperature is 30 DEG C.
As the present invention preferred embodiment, the first anode room, the cathode chamber and the second plate room volume
It is identical.
As the present invention preferred embodiment, the first anode, the cathode and the second plate by carbon paper, carbon cloth,
Carbon felt, graphite felt or graphite cake material are made.
A kind of microbiological fuel cell provided by the invention is realized using the structure of the anode chambers Liang Ge and a cathode chamber
Nitrogen is rapidly produced electricity into active micro- life from being detached in waste water to reduce to having in first anode room in first anode room
The toxic action of object, while the nitration reaction of denitrogenation and anti-nitration reaction being detached so that it is nitrified in cathode chamber
Reaction, and anti-nitration reaction occurs in second plate room, to ensure that efficiency of fuel cell generation, nitrification efficiency and denitrification effect respectively
The environmental optima of rate also ensures effectively removing for nitrogen in waste water on the basis of useless Organic substance in water effectively removes.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram of microbiological fuel cell provided in an embodiment of the present invention；
Fig. 2 is the voltage output schematic diagram of microbiological fuel cell provided in an embodiment of the present invention；
Fig. 3 is that the COD of first anode room and second plate room becomes in microbiological fuel cell provided in an embodiment of the present invention
Change schematic diagram；
Fig. 4 is first anode room, cathode chamber and second plate room in microbiological fuel cell provided in an embodiment of the present invention
Ammonia nitrogen concentration change schematic diagram；
Fig. 5 is first anode room, cathode chamber and second plate room in microbiological fuel cell provided in an embodiment of the present invention
Nitrate change schematic diagram.
Wherein, 1, first anode room, 2, cathode chamber, 3, second plate room, 4, cation-exchange membrane, 5, anion exchange
Film, 6, the first anode, 7, cathode, 8, second plate, the 9, first water inlet, the 10, first water outlet, the 11, second water inlet, 12,
Second water outlet, 13, conduit, 14, aeration tube, 15, gas flowmeter.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
Shown in referring to Fig.1, the embodiment of the invention discloses a kind of microbiological fuel cells, including the first sun set gradually
Pole room 1, cathode chamber 2 and second plate room 3, first anode room 1 and cathode chamber 2 are separated by cation-exchange membrane 4, cathode chamber 2
It is separated by anion-exchange membrane 5 with second plate room 3, first anode room 1 and second plate room 3 are also interconnected；Positioned at
The first anode 6 in one anode chamber 1, the cathode 7 in cathode chamber 2 and the second plate 8 in second plate room 3 divide
It does not connect；It is inoculated on the first anode 6 with active microorganism or activated sludge is produced electricity, abiotic urge is provided on cathode 7
Agent is inoculated with microorganism or activated sludge with nitrification activity in the catholyte in cathode chamber 2, is inoculated on second plate 8
There are while having microorganism or the activated sludge of electricity production and denitrification activity.
In the present embodiment, the waste water handled using microbiological fuel cell refers to the waste water containing organic matter and nitrogen, here
Nitrogen generally refer to the ammonia nitrogen in waste water, and ammonia nitrogen refers in water with free ammonia (NH3 -) and ammonium ion (NH4 +) form presence
Nitrogen.Traditional microbiological fuel cell mainly realizes the removal of useless Organic substance in water, but removes effect to the nitrogen in waste water
Fruit is not satisfactory, and especially to the removal of nitrate anion, and its removal rate also far can not meet demand.
Microbiological fuel cell provided in an embodiment of the present invention is given up using the structure of the anode chambers Liang Ge and a cathode chamber
After water enters first anode room, organic matter therein is degraded in first anode room and discharges electronics, and electronics is arrived through external circuit
Up to cathode, nitrogen therein rapidly enters cathode chamber through cation-exchange membrane, and in cathode chamber under the nitrification of microorganism
Nitrate anion is formed, oxygen reduction reaction also occurs under the effect of the catalyst in cathode chamber consumes the electronics from anode；Nitrate anion
Further enter second plate room through anion-exchange membrane, be finally reduced to nitrogen in second plate room, at the same waste water into
One stepping enters in second plate room, and organic matter is further degraded in second plate room and discharges electronics, and electronics is through outer
Circuit also reaches cathode.
The microbiological fuel cell, which is realized in first anode room, rapidly to be detached nitrogen from waste water to reduce to the
There is the toxic action for producing electricity active microorganism in one anode chamber, while the nitration reaction of denitrogenation and anti-nitration reaction being carried out
Separation so that nitration reaction occurs in cathode chamber, and anti-nitration reaction occurs in second plate room, to ensure that respectively
The environmental optima of efficiency of fuel cell generation, nitrification efficiency and denitrification efficiency also assures on the basis of useless Organic substance in water effectively removes
Nitrogen effectively removes in waste water.
Meanwhile the organic matter of waste water is adequately degraded, and electric energy is converted to by external circuit so that outside is used
Electric equipment utilizes.
In the present embodiment, having in the active microorganism of electricity production or activated sludge, catholyte for being inoculated on the first anode connects
Kind microorganism with nitrification activity or activated sludge and second plate on there is electricity production and denitrification work while be inoculated with
The microorganism of property or activated sludge, are all made of the microorganism of generally use or activated sludge in the prior art, the embodiment of the present invention
This is not specifically limited.
Further, the nitrogen in the waste water in first anode room passes through cation-exchange membrane fast transferring to cathode, drop
Low nitrogen is to the inhibition for producing electricity active microbial activity, so as to effectively improve the first anode in first anode room
Electricity generation performance.
Further, cathode is efficiently produced electricity using the progress catalytic oxidation-reduction reaction of abiotic catalyst, is used simultaneously
The microorganism with nitrification activity being inoculated in catholyte or activated sludge carry out nitration reaction, in releasable proton and cathode hair
The proton of raw oxygen reduction reaction consumption, is effectively relieved the raising of catholyte pH, does not influence the catalytic activity of microorganism, it is ensured that nitrogen
Element effectively removes；And the microorganism with nitrification activity can form biofilm in abiotic catalyst surface, effectively anti-
Only abiotic catalyst falls off and is lost in, and extends the Acceptable life of cathode, to reduce microbiological fuel cell
Cost.And in traditional microbiological fuel cell, it is non-due to often resulting in the process of running when cathode uses abiotic catalyst
Biocatalyst is fallen off and is lost in so that the service life of cathode greatly shortens, to increase microbiological fuel cell at
This；The separation membrane between the anode chamber and the cathode chamber reduces the transmission of proton simultaneously, leads to the acid in the anode chamber and the cathode chamber in During Process of Long-term Operation
Alkali is unbalance, affects the catalytic activity of microorganism, although the variation of pH can be effectively relieved by buffer solution system, still not
It can inherently solve the problems, such as acid-base imbalance.
Further, second plate room is substantially carried out anti-nitration reaction, can quickly restore nitrate anion, in the hydroxyl of generation
With the anolyte of acidification early period, the raising of catholyte pH is effectively relieved, does not influence the catalytic activity of microorganism, it is ensured that nitrogen
Effectively remove；And organic matter in the anolyte that can further degrade simultaneously discharges electronics to cathode, further increases electricity production
Performance.
On the basis of the above embodiments, first anode room 1 includes the first water inlet 9 and the first water outlet 10, the second sun
Pole room 3 includes the second water inlet 11 and the second water outlet 12, wherein the first water outlet 10 and the second water inlet 11 pass through conduit 13
Connection, the first water inlet 9 are connect with external wastewater supplying device.
In the present embodiment, waste water is introduced by wastewater supplying device, and is entered in first anode room by the first water inlet,
The degradation of organic matter is carried out in first anode room and discharges electronics, and nitrogen therein rapidly enters cathode through cation-exchange membrane
Room；Treated waste water also passes sequentially through the first water outlet, conduit and the second water inlet into second in first anode room
In anode chamber, is further degraded to remaining organic matter in waste water and generate electronics, while in the cathodic compartment by nitrogen shape
At nitrate anion through anion-exchange membrane also enter second plate room in carry out anti-nitration reaction, can not only effectively remove in this way
Organic matter in waste water also makes nitration reaction and the environment separation of anti-nitration reaction, to effectively remove the nitrogen in waste water.Most
Afterwards, waste water up to standard after processing is discharged through the second water outlet.
On the basis of the above embodiments, molten in the anolyte in the anolyte and second plate room 3 in first anode room 1
The concentration for solving oxygen is 0.05~0.1mg/L.
In the present embodiment, first anode room and second plate room are the closed environment of anaerobism, thus make first anode room and
In the indoor anolyte of second plate when a concentration of 0.05~0.1mg/L of dissolved oxygen, organic matter can be made in the effect of microorganism
Under preferably decompose and release electronics, improve the electricity generation performance of anode.
On the basis of the above embodiments, aeration tube 14, the other end and the outside of aeration tube 14 are provided in cathode chamber 2
Air pump connects.
In the present embodiment, cathode chamber is aerobic aeration environment, therefore aeration tube is provided in cathode chamber, and makes aeration
One end of pipe is stretched into catholyte, and the other end is connect with external air pump, it is ensured that the dissolved oxygen in cathode chamber inner cathode liquid
It is sufficient.
On the basis of the above embodiments, it is additionally provided with gas flowmeter 15 between aeration tube 14 and air pump, passes through gas
It is 10~50ml/min that flowmeter body 15, which controls aeration quantity,.
In the present embodiment, preferably to control aeration quantity, gas flowmeter is provided between aeration tube and air pump, and
And by gas flowmeter by aeration control be 10~50ml/min when, the content of dissolved oxygen in catholyte can be made to reach most
It is good, be conducive to the nitrification of the microorganism to nitrogen in catholyte with nitrification activity.
On the basis of the above embodiments, the abiotic catalyst being arranged on cathode 7 is Pt or nitrogen-doped graphene is catalyzed
Agent.
In the present embodiment, the abiotic catalyst that is arranged on cathode is Pt or nitrogen-doped graphene catalyst, have compared with
Good catalytic performance, can effectively realize catalytic action of the cathode when carrying out redox reaction.
On the basis of the above embodiments, catholyte is inorganic salt solution or inorganic salt containing nitrogen solution.
In the present embodiment, catholyte is preferably inorganic salt solution or inorganic salt containing nitrogen solution, and can preferably provide has
The microorganism of nitrification activity or the inoculation environment and growing environment of activated sludge.
On the basis of the above embodiments, the cultivation temperature of first anode room 1, cathode chamber 2 and second plate room 3 is 30
℃。
It it is 30 DEG C by the cultivation temperature control of first anode room, cathode chamber and second plate room, between in the present embodiment
The temperature for connecing the temperature and catholyte that adjust the first anode and second plate surface is 30 DEG C, can provide optimum for microorganism
Growing environment, improve the bioactivity of microorganism, finally improve the performance of entire microbiological fuel cell.In practical application,
First anode room, cathode chamber and second plate room can be integrally put into 30 DEG C of constant temperature incubations of progress in constant incubator.
On the basis of the above embodiments, first anode room 1, cathode chamber 2 are identical with the volume of second plate room 3.
In the present embodiment, since anion and cation exchange membrane is to the migration rate and pole room cavity volume and ion of zwitterion
Concentration is related, therefore migration rate of the nitration reaction rate of cathode chamber from first anode room to cathode chamber determines, generates
Proton can be used as the proton source of Cathodic oxygen reduction；The anti-nitration reaction rate of second plate room depends on cathode chamber to the
The migration rate of two anode chambers is related with the organic concentration that first anode room is migrated to second plate room；When three's volume is identical
When, be conducive to the nitration reaction and anti-nitration reaction of nitrogen in waste water, it is ensured that the useless Organic substance in water of discharge and going for nitrogen
Except rate is up to 95% or more.
On the basis of the above embodiments, the first anode 6, cathode 7 and second plate 8 are by carbon paper, carbon cloth, carbon felt, graphite
Felt or graphite cake material are made.
In the present embodiment, the first anode, cathode and second plate are all made of carbon paper, carbon cloth, carbon felt, graphite felt or graphite cake
Material is made, and the conductive effect of these materials is preferable, is easier to that microorganism is made to adhere to, and these the cost of material is low, be easy to get.
For the technical solution that the present invention is further explained, the embodiment of the present invention additionally provides a kind of microbiological fuel cell
Specific implementation mode.
In the present embodiment, the microbiological fuel cell by volume be first anode room and the second plate room of 100ml with
And the cathode chamber that volume is 100ml forms, wherein cathode chamber is located at the centre of first anode room and second plate room, and the
One anode chamber is separated with cathode chamber by cation-exchange membrane, and cathode chamber is separated with second plate room by anion-exchange membrane.Position
In the indoor first anode of the first anode and positioned at the indoor second plate of second plate respectively by conducting wire via the outer of 1k Ω
Resistance connection is located at the cathode in cathode chamber, forms current loop.
The first anode and second plate are all made of the making of carbon felt material, and carbon felt size is 2 × 3 × 3cm, and in the first sun
Extremely upper inoculation, which has, produces electricity active activated sludge, and the activity of electricity production and denitrification activity is inoculated with while had on second plate
Sludge, activated sludge inoculum concentration are 0.5mg/ml.Cathode is made of carbon cloth material, and loads 0.5mg/cm2Pt doping
Graphen catalyst, carbon cloth size are 3 × 3cm, and activity of the inoculation with nitrification activity is dirty in the indoor catholyte of cathode
Mud, activated sludge inoculum concentration are 0.5mg/ml.First anode room and second plate room are the closed environment of anaerobism, sun therein
The concentration of dissolved oxygen is 0.05~0.1mg/L in the liquid of pole.Cathode chamber is aerobic aeration environment, and aeration quantity is flowed through by air pump
Gas flowmeter is controlled in 30-40ml/min.
First anode room includes the first water inlet and the first water outlet, and second plate room goes out including the second water inlet and second
The mouth of a river, wherein the first water outlet and the second water inlet are connected by conduit, the first water inlet connects with external wastewater supplying device
It connects.
The nitrogenous organic wastewater of simulation is added in first anode room and second plate room as anolyte, wherein the second sun
Each main ingredient and proportioning are in the anolyte of pole room：Two hypophosphite monohydrate sodium dihydrogen (Na2HPO4·2H2O) 0.8~8.1g/L, ten
Two hypophosphite monohydrate disodium hydrogen (Na2HPO4·12H2O) 2.1~22g/L, potassium chloride (KCl) 0~0.26g/L, sodium acetate
(CH3COONa) 0.5g/L, Wolfes Mineral Solution 10mL/L, and its pH value is adjusted to 7 by HCl solution or NaOH solution.Its
In, Wolfes Mineral Solutions specifically comprise：Amion acetic acid (NH2CH2COOH) 1.5g/L, bitter salt (MgSO4·
7H2O) 3g/L, two hydrated manganese sulfate (MnSO4·2H2O) 0.5g/L, sodium chloride (NaCl) 1.0g/L, green vitriol
(FeSO4·7H2O) 0.1g/L, cobalt chloride (CoCl2) 0.1g/L, calcium chloride (CaCl2) 0.1g/L, zinc sulfate (ZnSO4)0.1g/
L, Salzburg vitriol CuSO4·5H2O 0.01g/L, anhydrous potassium aluminium sulfate (AlK (SO4)2) 0.01g/L, boric acid (H3BO3)
0.01g/L, sodium molybdate (Na2MoO4·2H2O) 0.01g/L, and it is to 7 to adjust its pH by KOH solution.Sun in first anode room
On the basis of anolyte of the pole liquid in second plate room, ammonium chloride (NH is added4Cl) 0.42g/L is as nitrogen source.
The main component and proportioning of catholyte in the cathodic compartment be：Two hypophosphite monohydrate sodium dihydrogen (Na2HPO4·2H2O)
0.8~8.1g/L, disodium hydrogen phosphate dodecahydrate (Na2HPO4·12H2O) the phosphate buffer solution of 2.1~22g/L.
In use, disposably corresponding solution is added into each chamber, after being mixed with activated sludge, it is placed in 30 DEG C of perseverances
It is cultivated in warm incubator, and data collecting card is connected with every 5 minutes primary record collection voltages at electrode.When voltage first rises
After dropping to 20mV or less again afterwards, it is considered as a complete cycle, needs to change new solution.By the operation in preceding 3 periods, entirely
The output voltage stabilization of microbiological fuel cell, the voltage output during the 4th periodic duty is as shown in Fig. 2, the first anode
It is up to 620mV with the maximum output voltage of cathode acquisition, the end cycle, voltage gos up rapidly after replacing solution, second plate
It is consistent therewith with the voltage change of cathode.
Fig. 3 is that the COD of first anode room and second plate room becomes in microbiological fuel cell provided in an embodiment of the present invention
Change schematic diagram, from the figure 3, it may be seen that the initial COD (Chemical of the anolyte in first anode room and second plate room
Oxygen Demand, COD) value is in 500mg/L or so, with the continuation of whole service process, first anode room
In COD value uniform descent, and the COD value in the second plate room under isoconcentration is in quick lower solution early period.
Fig. 4 is first anode room, cathode chamber and second plate room in microbiological fuel cell provided in an embodiment of the present invention
Ammonia nitrogen concentration change schematic diagram, Fig. 5 be microbiological fuel cell provided in an embodiment of the present invention in first anode room, cathode chamber
With the nitrate change schematic diagram of second plate room.Ammonia nitrogen is can be seen that from first from the nitrogen variation in Fig. 4 and Fig. 5
Anode chamber is migrated to cathode chamber, and the ammonia nitrogen of cathode chamber is converted into there is no accumulation but rapidly nitrate anion.In addition, nitrate anion from
When cathode chamber is migrated to second plate room, the reduction reaction of nitrate anion equally rapidly has occurred, causes the nitre of second plate room
Acid group concentration maintains reduced levels.It can also be seen that the nitration reaction of cathode chamber and second plate room from Fig. 4 and Fig. 5
The rate of anti-nitration reaction is very fast, without substrate accumulation.
A kind of microbiological fuel cell provided in an embodiment of the present invention, it is simple in structure, it is easy to operate, have in useless Organic substance in water
On the basis of effect removal, effectively removing for nitrogen in waste water is also ensured, falling off for abiotic catalyst can also be effectively prevent
And loss, extend the Acceptable life of cathode, to reduce the cost of microbiological fuel cell.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of microbiological fuel cell, which is characterized in that including first anode room, cathode chamber and the second plate set gradually
Room, the first anode room and the cathode chamber are separated by cation-exchange membrane, the cathode chamber and the second plate room
It is separated by anion-exchange membrane, the first anode room and the second plate room are also interconnected；Positioned at first sun
The extremely indoor first anode is located at the indoor cathode of the cathode and positioned at the indoor second plate difference of the second plate
Connection；
It is inoculated on the first anode with active microorganism or activated sludge is produced electricity, is provided on the cathode abiotic
Catalyst is inoculated with microorganism or activated sludge with nitrification activity, second sun in the indoor catholyte of cathode
Microorganism or the activated sludge of electricity production and denitrification activity are inoculated with while had on extremely.
2. microbiological fuel cell according to claim 1, which is characterized in that the first anode room includes the first water inlet
Mouthful and the first water outlet, the second plate room include the second water inlet and the second water outlet, wherein first water outlet and
Second water inlet is connected by conduit, and first water inlet is connect with external wastewater supplying device.
3. microbiological fuel cell according to claim 1, which is characterized in that the indoor anolyte of the first anode and
The concentration of dissolved oxygen is 0.05~0.1mg/L in the indoor anolyte of second plate.
4. microbiological fuel cell according to claim 1, which is characterized in that it is provided with aeration tube in the cathode chamber,
The other end of the aeration tube is connect with external air pump.
5. microbiological fuel cell according to claim 4, which is characterized in that between the aeration tube and the air pump
It is additionally provided with gas flowmeter, it is 10~50ml/min to control aeration quantity by the gas flowmeter.
6. microbiological fuel cell according to claim 1, which is characterized in that the abiotic catalysis being arranged on the cathode
Agent is Pt or nitrogen-doped graphene catalyst.
7. microbiological fuel cell according to claim 1, which is characterized in that the catholyte is inorganic salt solution or contains
Nitrogen inorganic salt solution.
8. microbiological fuel cell according to claim 1, which is characterized in that the first anode room, the cathode chamber
Cultivation temperature with the second plate room is 30 DEG C.
9. microbiological fuel cell according to claim 1, which is characterized in that the first anode room, the cathode chamber
It is identical with the volume of second plate room.
10. microbiological fuel cell according to claim 1, which is characterized in that the first anode, the cathode and institute
Second plate is stated to be made of carbon paper, carbon cloth, carbon felt, graphite felt or graphite cake material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203958.9A CN108448144B (en) | 2018-03-12 | 2018-03-12 | Microbial fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810203958.9A CN108448144B (en) | 2018-03-12 | 2018-03-12 | Microbial fuel cell |
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| CN109950585A (en) * | 2019-01-31 | 2019-06-28 | 华中科技大学 | A method of promoting microbiological fuel cell electricity production and sensing capabilities |
| CN110357273A (en) * | 2019-07-24 | 2019-10-22 | 中国科学院重庆绿色智能技术研究院 | A kind of fuel-cell device and ammonia nitrogen removal and ferric iron regeneration method |
| US10886551B2 (en) * | 2018-05-02 | 2021-01-05 | Jiangnan University | Method for synchronously recovering metal and elemental sulfur |
| CN114824404A (en) * | 2022-05-06 | 2022-07-29 | 天津大学 | Microbial fuel cell stack and method for reducing Cr (VI) |
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