CN106698679A - Filtering type cathode microorganism desalting battery and sewage treatment method - Google Patents
Filtering type cathode microorganism desalting battery and sewage treatment method Download PDFInfo
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- CN106698679A CN106698679A CN201710040801.4A CN201710040801A CN106698679A CN 106698679 A CN106698679 A CN 106698679A CN 201710040801 A CN201710040801 A CN 201710040801A CN 106698679 A CN106698679 A CN 106698679A
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
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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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- 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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Abstract
The invention discloses a filtering type cathode microorganism desalting battery and a sewage treatment method. The sewage treatment method comprises the following steps: feeding sewage into an anode chamber, under the action of an anode power generation microorganism, degrading organic matters in the sewage so as to obtain anode effluent; feeding the anode effluent into a cathode chamber, under the action of cathode power generation microorganisms, filtering treatment and aeration treatment, removing suspended solids, bacteria and organic matters in the anode effluent so as to obtain cathode effluent; feeding the cathode effluent into a lighting chamber and a concentration chamber, and under the action of an ion exchange membrane, removing the salt in the cathode effluent. The invention further discloses the filtering type cathode microorganism desalting battery which comprises an anode chamber, a cathode chamber and the lighting chamber and the concentration chamber for treatment. The sewage treatment method disclosed by the invention is easy to operate, and the microorganism desalting pool is simple in structure and good in sewage treatment effect.
Description
Technical field
The invention belongs to technical field of sewage, it is related to a kind of filter-type biological-cathode microbiological desalination cell and is used for
The sewage water treatment method of the desalination cell.
Background technology
Organic matter in sewage contains the energy density for having substantial amounts of chemical energy, its chemical energy and is about 1.93kW/m3, it is remote high
The energy of consumption is needed in sewage disposal process.However, traditional sewage disposal is then by consuming huge energy (as exposed
Gas and water pump etc.) realize the oxidation Decomposition of dirty Organic substance in water, there is no chemical energy in effective recycling sewage.Thus, pass
The shortcomings of sewage disposal process of system possesses high energy consumption.
Microorganism desalination cell (Microbial Desalination Cell, MDC) is dirty as a kind of new low energy consumption
Water technology.MDC is general by a microorganism anode, negative electrode (biological-cathode, chemical cathode, air cathode etc.), Yi Jiyin
Ion exchange membrane stack composition between anode.Operationally, sewage enters anode, and the organic matter in sewage is produced electricity in anode anaerobism
Oxidation Decomposition release electronics in the presence of microorganism, electronics reaches negative electrode, reduction reaction occurs (such as in negative electrode by external circuit
Reduction O2, chemical oxidizing agent etc.) realize electricity production.At the same time, electric field is produced between anode and cathode, salt in ion exchange membrane stack is driven
The zwitterion movement of water, realizes desalination.Thus, MDC can simultaneously realize sewage disposal, electricity production and desalination.
However, traditional MDC also has some shortcomings：
(1) effluent quality is poor.Organic matter although the anode microorganism of MDC can degrade in sewage, its degraded speed
Rate and degree are relatively low, and can not realize effectively removal to the nutrient (such as nitrogen phosphorus) in sewage and particulate matter, thus go out
Water water quality can not meet existing emission request.
(2) fresh water producing water ratio is relatively low.Tradition MDC can simultaneously produce various water outlets, such as anode water outlet, the moon in the process of running
Pole water outlet, fresh water and concentrated water, wherein fresh water are unique useful water, but the yield of fresh water is relatively low in tradition MDC.
Membrane separation technique is a kind of ripe sewage disposal technology, and micro-filtration membrane aperture therein is 0.1-1.0 microns, can
The retention of suspension, microorganism and some macromolecular substances in sewage is realized, the advanced treating of sewage is realized.Due to the technology
With effluent quality is good, stable performance the features such as, current micro-filtration membrane separation technique has been widely used for sewage disposal, food and adds
The industries such as work, achieve good effect.
The content of the invention
The present invention be directed to problems of the prior art, there is provided a kind of filter-type biological-cathode microbiological desalination cell
And for the sewage water treatment method of the desalination cell, filter membrane and biological-cathode type microorganism desalination cell are coupled, filter membrane
Can realize separating the interception of pollutant, enhanced water treatment effect；And biological-cathode can realize that the reduction of oxygen produces electric energy, together
When to pollutant with degradation.
According to an aspect of the present invention, there is provided at a kind of sewage for filter-type biological-cathode microbiological desalination cell
Reason method, including：
Sewage is set to enter anode chamber, the partial organic substances in sewage of being degraded in the presence of anode electricity-producing microorganism are obtained
Anode water outlet；
The anode water outlet is set to enter cathode chamber, in the common work of negative electrode electricity-producing microorganism, filtration treatment and Air Exposure
With the suspension in the lower removal anode water outlet, bacterium and organic matter, negative electrode water outlet is obtained；
The negative electrode water outlet is entered light room and dense room, removed in the presence of amberplex and electric field or concentrated and be described
Salinity in negative electrode water outlet.
According to certain embodiments of the present invention, the anode electricity-producing microorganism is attached on the anode of the anode chamber,
Its organic matter decomposed by anaerobic oxidation in sewage discharges electronics to anode, and the electronics is delivered to the moon by external circuit
Pole；The negative electrode electricity-producing microorganism is attached on the negative electrode of the cathode chamber, in the presence of the negative electrode electricity-producing microorganism, institute
There is reduction reaction realization electricity production with the electron acceptor in the cathode chamber in the electronics stated on negative electrode.
According to a preferred embodiment of the present invention, the water inlet flow velocity of the sewage is 35mL/h.
According to certain embodiments of the present invention, hydraulic detention time of the sewage in anode chamber is 2-15 hours, excellent
Elect as 12 hours.
According to a preferred embodiment of the present invention, the flux of filtration treatment is 10-50L/ (h in the cathode chamber
m2)。
According to certain embodiments of the present invention, the aeration rate of Air Exposure is 0.2-60L/h in the cathode chamber.
According to a preferred embodiment of the present invention, the anode water outlet enters cathode chamber, on the one hand by Air Exposure,
A part of pollutant therein (such as organic matter, nitrogen) is removed, on the other hand the negative electrode by being attached on negative electrode produces electricity micro- life
Thing degraded partial organic substances therein, another further aspect filters suspended particulate substance therein and microorganism, obtains by filter
Negative electrode water outlet.
Some embodiments of the invention, Air Exposure is carried out by the anode water outlet, on the one hand can be removed
A part of pollutant (such as organic matter, nitrogen) therein, on the other hand can provide electron acceptor (oxygen by aeration for negative electrode
Gas) electric energy is produced, another further aspect can mitigate the pollution of filter by aeration.
According to a preferred embodiment of the present invention, the filtration treatment is the filtration treatment carried out by filter,
The filter includes filter membrane.
According to certain embodiments of the present invention, for the filter membrane, there is no particular limitation, and selection this area has
The filter membrane of sewage water filtration function.
In certain embodiments, the filter membrane includes one or more in organic film, inoranic membrane and metal film.
Preferred embodiment of the invention, the aperture of the filter membrane is 50-2000nm.
According to a preferred embodiment of the present invention, the negative electrode water outlet enters light room and dense room, in amberplex and
The salinity in the negative electrode water outlet is removed or concentrated under the collective effect of electric field, is obtained final product.
According to certain embodiments of the present invention, the amberplex includes the cation-exchange membrane and the moon that are arranged alternately
Amberplex, the light room and dense room at interval are formed by the cation-exchange membrane being arranged alternately and anion-exchange membrane；
After the negative electrode water outlet enters light room and dense room, internally in the presence of electric field, the cation in negative electrode water outlet passes through the sun
Amberplex is moved to cathode direction, and the anion in negative electrode water outlet is moved through the anion-exchange membrane to anode direction
It is dynamic, realize the removing and concentration of salinity.
In some specific embodiments, the negative electrode water outlet enters the light room and dense room, the internally effect of electric field
Under, the cation in negative electrode water outlet is moved through the cation-exchange membrane to cathode direction, and the anion in negative electrode water outlet is worn
Cross the anion-exchange membrane to anode direction move, the dense room and light interior respectively obtain be enriched salinity concentrated water and
It is stripped of the fresh water of salinity.
According to another aspect of the present invention, there is provided a kind of filter-type biological-cathode microbiological desalination cell, including：
Anode chamber, is provided with anode in the anode chamber, anode electricity-producing microorganism is attached with thereon；
Cathode chamber, it passes through pipeline and is connected with the anode chamber, receives the anode water outlet from anode chamber, the cathode chamber
Negative electrode, filter and aerator are inside respectively equipped with, negative electrode electricity-producing microorganism is attached with the negative electrode；And,
Light room and dense room between the anode chamber and cathode chamber, the dense room and light room pass through be arranged alternately from
Proton exchange is separated, and is connected with the cathode chamber by pipeline, receives the negative electrode water outlet from cathode chamber；
Wherein, the anode in the anode chamber connects the negative electrode in the cathode chamber by external circuit.
According to the present invention, the anode Anodic electricity-producing microorganism that is attached to is by organic in anaerobic oxidation decomposition sewage
Thing discharges electronics to anode, and the electronics is delivered to negative electrode by external circuit；The negative electrode electricity production being attached on negative electrode
Microorganism realizes electricity production by there is reduction reaction with the electronics passed over by anode.
According to certain embodiments of the present invention, the filter is used to be carried out to entering the anode water outlet in cathode chamber
Filtration treatment, removes suspension therein, bacterium and partial organic substances.
In some specific embodiments, the filtration flux of the filter is 10-50L/ (hm2)。
According to certain embodiments of the present invention, described aerator is located at the lower section of filter, by the exposure
Device of air carries out Air Exposure to the anode water outlet in the cathode chamber, and aeration can simultaneously realize electricity production, the pollutant of negative electrode
Further removal and reduce filter pollution speed.
In some specific embodiments, the aeration rate of the aerator is 0.2-60L/h.
According to a preferred embodiment of the present invention, for the anode material, there is no particular limitation, and selection can adhere to
Corresponding electricity-producing microorganism, and the material of chemistry or biological corrosion can be prevented.
According to certain embodiments of the present invention, the anode material includes carbon-based material and/or metal material.At some
In specific embodiment, the anode material includes in activated carbon granule, carbon brush, graphite, carbon cloth, stainless (steel) wire and nickel brush
Plant or several.
According to a preferred embodiment of the present invention, for the anode electricity-producing microorganism, there is no particular limitation, for example
Shewanella (Shewanella) may be selected.
According to certain embodiments of the present invention, for the cathode material, there is no particular limitation, and selection can adhere to phase
The electricity-producing microorganism answered, and the material of chemistry or biological corrosion can be prevented.
According to a preferred embodiment of the present invention, the cathode material includes carbon-based material and/or metal material.One
In a little specific embodiments, the cathode material is included in activated carbon granule, carbon brush, graphite, carbon cloth, stainless (steel) wire and nickel brush
One or more.
According to certain embodiments of the present invention, for the negative electrode electricity-producing microorganism, there is no particular limitation, for example may be used
Selection ground bacillus (Geobacter).
According to a preferred embodiment of the present invention, the filter includes filter membrane.
According to certain embodiments of the present invention, for the filter membrane, there is no particular limitation, and selection this area has
The filter membrane of sewage water filtration function.
In certain embodiments, the filter membrane includes one or more in organic film, inoranic membrane and metal film.
Preferred embodiment of the invention, the aperture of the filter membrane is 50-2000nm.
According to a preferred embodiment of the present invention, the amberplex include the cation-exchange membrane that is arranged alternately and
Anion-exchange membrane, near anode side the amberplex be cation-exchange membrane, near negative electrode side it is described from
Proton exchange is anion-exchange membrane, and interval is formed by the cation-exchange membrane being arranged alternately and anion-exchange membrane
Light room and dense room.In the present invention, " close " is a relative concept, refers to small apart from the distance of anode near anode side
In the distance apart from negative electrode, close negative electrode side refers to the distance apart from negative electrode less than the distance apart from anode.
According to certain embodiments of the present invention, after the negative electrode water outlet enters light room and dense room, the internally work of electric field
Under, the cation in negative electrode water outlet is moved through the cation-exchange membrane to cathode direction, the anion in negative electrode water outlet
Moved to anode direction through the anion-exchange membrane, realize the removing of salinity.
In some specific embodiments, the negative electrode water outlet respectively enters the dense room and light room, internally electric field
Under effect, cation in negative electrode water outlet is moved through the cation-exchange membrane to cathode direction, in negative electrode water outlet it is cloudy from
Son is moved through the anion-exchange membrane to anode direction, is respectively obtained in the dense room and light interior and is enriched the dense of salinity
Water and the fresh water for being stripped of salinity.
According to certain embodiments of the present invention, for the amberplex, there is no particular limitation, selects this area
Conventional electrodialysis-ion exchange film.In some specific embodiments, the thickness of the amberplex is 0.2-
0.5mm, transmitance >=90%, exchange capacity >=1mol/kg, burst strength >=0.3MPa.
According to a preferred embodiment of the present invention, for the quantity of the amberplex, there is no particular limitation, root
Set according to the effluent quality demand in actual motion to concentrated water and fresh water.
Filter-type biological-cathode microbiological desalination cell of the present invention is by the electricity-producing microorganism that is attached on anode and negative electrode
Electricity production is realized, the chemical energy in sewage is converted into electric energy；Meanwhile, in the presence of the electric field that electrode is produced, the moon in sewage
Cation is moved, and realizes desalination, i.e., the electric energy is used for the treatment of sewage again, is to be capable of achieving to sewage without extra electric field
Process, and the electric energy for producing is not wasted.
Filter-type biological-cathode microbiological desalination cell of the invention, also includes：
Connect the pipeline between the anode chamber, cathode chamber, light room and dense room；
Water pump on the pipeline, for water inlets at different levels and the circulation of water outlet；
Optional outer loop bottle, it passes through pipeline and is connected respectively at the cathode chamber, light room and dense room.
According to certain embodiments of the present invention, negative electrode water outlet may optionally enter outer loop bottle, and in outer loop
Bottle and light room and dense circulating inside, realize multiple desalination and concentration process.
According to a further aspect of the invention, there is provided a kind of above-mentioned filter-type biological-cathode microbiological desalination cell and sewage
Application of the processing method in sewage disposal.
According to a preferred embodiment of the present invention, the COD value of the sewage is more than 150mg/L.
Advantages of the present invention and Advantageous Effects are as follows：
The present invention just filter membrane and biological-cathode type microorganism desalination cell are coupled, and filter membrane can be realized to being hanged in sewage
The interception of float and organic matter is separated, and on the one hand biological-cathode can realize that the reduction of oxygen produces electric energy, on the other hand can be right
Pollutant is degraded, and the treatment effeciency to sewage is high, high treating effect.The inventive method is easily operated, microorganism desalination electricity
Pool structure is simple, and effluent quality is excellent, is especially suitable for large-scale industrial production application.
Brief description of the drawings
Fig. 1 is the structure and operation stream of the filter-type biological-cathode microbiological desalination cell according to one embodiment of the invention
Journey schematic diagram (continuous operation)；
Fig. 2 is the structure and operation stream of the filter-type biological-cathode microbiological desalination cell according to one embodiment of the invention
Journey schematic diagram (intermittent duty)；
Fig. 3 is using the inventive method and device the continuous processing water inlet of 105 days to be carried out to actual sewage and water outlet COD is dense
Degree figure；
Fig. 4 be using the inventive method and device under different aeration rates to the disposition figure of sewage；
Description of reference numerals：1st, anode；2nd, negative electrode；3rd, filter；4th, aerator；5th, cation-exchange membrane；6th, it is cloudy
Amberplex；7th, non-essential resistance；8th, wastewater influent；9th, anode water outlet；10th, negative electrode water outlet；11st, concentrated water water outlet；12nd, fresh water goes out
Water；13rd, water pump；14th, outer loop bottle；15th, anode material；16th, cathode material；17th, anode electricity-producing microorganism；18th, negative electrode is produced
Electric microorganism；19th, dense room；20th, light room.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, 2, filter-type biological-cathode microbiological desalination cell of the present invention includes anode chamber, cathode chamber and position
Light room and dense room between the anode chamber and cathode chamber.
Wherein, the size of the anode chamber is 20 × 7 × 3.5cm, and volume is 490mL, and net sectional area is 140cm2；Its
Anode 1 is inside provided with, filler particles shaped activated carbon adheres to life as electrode material and carrier for electricity-producing microorganism in the cavity of anode 1
Long, a diameter of~2mm of activated carbon granule, length is~5mm；The Current Collecting Methods of anode use bilateral current collection, current-collecting member choosing
With titanium net, titanium net aperture is about 0.2 × 0.2cm；Anode electricity-producing microorganism such as Shewanella is attached with anode 1
(Shewanella) etc., and be connected with the negative electrode 2 of cathode chamber by external circuit.
The size of cathode chamber is 20cm × 7cm × 6.5cm, and volume is 910mL, and negative electrode 2, the and of filter 3 are provided with it
Aerator 4, negative electrode 2 includes two cathode columns, is respectively arranged at the opposite sides of cathode chamber, and filler particles shape is lived in its cavity
Property charcoal supply electricity-producing microorganism apposition growth as electrode material and carrier, a diameter of~2mm of activated carbon granule, length for~
5mm, the thickness of activated carbon packed bed is respectively 3.0cm and 2.0cm in two cathode columns, using bilateral Current Collecting Methods, current collection
Material selection titanium net, titanium net aperture is about 0.2 × 0.2cm；Anode electricity-producing microorganism such as ground bacillus are attached with cathode column
(Geobacter) etc.；Filter 3 is located at two middle upper portions of cathode column, using hollow-fibre membrane as filter element, in
The inner and outer diameter of hollow fiber film is respectively 1.0mm and 1.9mm, and average pore size is 0.3 μm, and intensity is more than 100N, total effective area
It is 40.2cm2；Aerator is provided with below the filter, is aerated during operation, to realize producing electricity, pollute object depth
Degree removal and control membrane fouling.
Three pairs of cation-exchange membranes 5 and anion-exchange membrane 6 have been arranged alternately between anode and negative electrode, 2 light rooms have been constituted
With 3 dense rooms, the wherein exchange capacity of cation-exchange membrane is 2.0mol/kg, and the exchange capacity of anion-exchange membrane is
The thickness of 1.8mol/kg, each dense room and light room is 0.5cm, and empty bed volume is 70mL.It is biological cloudy to reduce the filter-type
The internal resistance of atomic biological desalination cell, mixed-cation exchanger resin is filled in dense room and light room, and (Na types, exchange capacity is
4.2mmol/g) with anion exchange resin (Cl types, exchange capacity is 4.0mmol/g) as ion conductor, cation and anion exchange
The weight packing ratio of resin is 1.4:1.0.
Embodiment 2
With actual cities sewage (COD：241.5 ± 31.3mg/L, ammonia nitrogen：66.6 ± 3.7mg/L, total nitrogen：68.6±
5.8mg/L, total phosphorus：5.9 ± 0.4mg/L, electrical conductivity：1547.5 ± 27.6 μ S/cm) as a example by, using the inventive method and filtering
Type biological-cathode microbiological desalination cell is processed.Sewage first enters anode with the speed of 41mL/h, and (anode sky bed waterpower is stopped
It is 12h to stay the time), realize the preliminary removal of organic matter；Anode water outlet afterwards enters negative electrode, in negative electrode electricity-producing microorganism, filtering
Suspended particulate substance, bacterium and larger molecular organicses are further removed under the collective effect of device and aerator；Then negative electrode
Water outlet is first contained in outer loop bottle, per 12h with 9:1 volume ratio enters light room (441mL) and dense room (49mL) (Fig. 2),
Realize the removing of salinity.Light room and dense room intermittent duty in experiment, dense room and light room are circulated in outer loop bottle respectively, circulation
Flow is 12mL/min, and desalination period is 12h.
COD, the electrical conductivity of anode water outlet, negative electrode water outlet, dense room water outlet and light room water outlet are regularly determined in experimentation
Etc. index, test data shows, during continuous operation 105 days, filter-type biological-cathode microbiological desalination cell of the present invention
Electric current in 3-17mA, after being processed through filter-type biological-cathode microbiological desalination cell of the present invention, the final conductance of light room water outlet
Rate is below 150 μ S/cm, has reached the level of conductivity of first-stage reverse osmosis；At the same time, the final electrical conductivity of dense room water outlet is equal
Higher than 5700 μ S/cm, most of salinity, almost all of total phosphorus (98.4%) and part total nitrogen are concentrated, realize nutrition
The concentration and recovery of element.
The COD measurement results of wastewater influent, anode water outlet, negative electrode water outlet, dense room water outlet and light room water outlet are as shown in Figure 3.
From figure 3, it can be seen that during continuous operation 105 days, through filter-type biological-cathode microbiological desalination of the present invention
The COD value of light room water outlet is below 40mg/L after Battery disposal, has reached one-level A grades of water standard.
Method according to embodiment 2 is operated, and selects the aeration rate of aerator to be respectively 0.2,0.6,1.8,10
And 60L/h, in experimentation, measure average current, the negative electrode water outlet (negative electrode of the filter-type biological-cathode microbiological desalination cell
Filtered fluid) COD concentration, TMP rates of rise and dissolved oxygen concentration, and calculate fresh water salt rejection rate/concentrated water enrichment factor data, as a result
See Fig. 4.
From fig. 4, it can be seen that when negative electrode aeration rate is reduced to 0.2L/h by 60L/h, filter-type of the present invention is biological cloudy
The average current of atomic biological desalination cell is stilled remain in>7mA, fresh water salt rejection rate is maintained at more than 85%, concentrated water enrichment factor
More than 600%；The pressure difference speedup of negative electrode water outlet COD and filter membrane is raised with the reduction of aeration rate, but is respectively less than
40mg/L and 0.8kPa/d.At showing the filter-type biological-cathode microbiological desalination cell with preferable electricity production, desalination, sewage
Rationality energy, and energy consumption is relatively low, stability is strong.
Any numerical value mentioned in the present invention, if simply having two between any minimum and any of the highest value
The interval of unit, then including one all values of unit of each increase from minimum to peak.If for example, statement is a kind of
The amount of component, or the value of the state-variable such as temperature, pressure, time is 50-90, in this manual it means that specific
List 51-89,52-88 ... and the numerical value such as 69-71 and 70-71.For the value of non-integer, can with due regard to
0.1st, 0.01,0.001 or 0.0001 is a unit.This is only some special examples for indicating.In this application, with similar side
Formula, the combination that is possible to of the numerical value between cited minimum and peak is considered to disclose.
It should be noted that embodiment described above is only used for explaining the present invention, do not constitute to of the invention any
Limitation.By referring to exemplary embodiments, invention has been described, it should be appreciated that word wherein used is descriptive
With explanatory vocabulary, rather than limited vocabulary.The present invention can be made within the scope of the claims by regulation
Modification, and the present invention is revised in without departing substantially from scope and spirit of the present invention.Although the present invention described in it is related to
And specific method, material and embodiment, it is not intended that the present invention is limited to wherein disclosed particular case, conversely, this hair
It is bright to can be extended to other all methods and applications with identical function.
Claims (10)
1. a kind of sewage water treatment method for filter-type biological-cathode microbiological desalination cell, including：
Sewage is set to enter anode chamber, the organic matter in sewage of being degraded in the presence of anode electricity-producing microorganism obtains anode water outlet；
The anode water outlet is set to enter cathode chamber, under the collective effect of negative electrode electricity-producing microorganism, filtration treatment and Air Exposure
Suspension in the anode water outlet, bacterium and organic matter are removed, negative electrode water outlet is obtained；
The negative electrode water outlet is set to enter light room and dense room, in removing the negative electrode water outlet in the presence of electric field and amberplex
Salinity.
2. method according to claim 1, it is characterised in that the anode electricity-producing microorganism is attached to the anode chamber
On anode, its organic matter decomposed by anaerobic oxidation in sewage discharges electronics to anode, and the electronics passes through external circuit
It is delivered to negative electrode；The negative electrode electricity-producing microorganism is attached on the negative electrode of the cathode chamber, in the negative electrode electricity-producing microorganism
Under effect, there is reduction reaction realization electricity production in the electronics on the negative electrode with the electron acceptor in the cathode chamber.
3. method according to claim 1, it is characterised in that the hydraulic detention time in anode chamber of the sewage is 2-
15 hours；And/or the flux of filtration treatment is 10-50L/ (hm in the cathode chamber2)。
4. method according to claim 1, it is characterised in that the filtration treatment is carried out by filter；And/or institute
Stating filter includes filter membrane；And/or the filter membrane can be the one kind or several in organic film, inoranic membrane and metal film
Kind；And/or the aperture of the filter membrane is 50-2000nm.
5. method according to claim 1, it is characterised in that the amberplex includes that the cation being arranged alternately is handed over
Film and anion-exchange membrane are changed, the light room at interval is formed by the cation-exchange membrane being arranged alternately and anion-exchange membrane
With dense room；After the negative electrode water outlet enters light room and dense room, internally in the presence of electric field, the cation in negative electrode water outlet is passed through
The cation-exchange membrane is moved to cathode direction, and the anion in negative electrode water outlet is through the anion-exchange membrane to anode side
To movement, the removing of salinity is realized.
6. a kind of filter-type biological-cathode microbiological desalination cell, including：
Anode chamber, is provided with anode in the anode chamber, anode electricity-producing microorganism is attached with the anode；
Cathode chamber, it passes through pipeline and is connected with the anode chamber, receives in the anode water outlet from anode chamber, the cathode chamber and divides
Negative electrode, filter and aerator are not provided with, and negative electrode electricity-producing microorganism is attached with the negative electrode；And,
The ion that light room and dense room between the anode chamber and cathode chamber, the light room and dense room pass through to be arranged alternately is handed over
Change film to be separated, and be connected with the cathode chamber by pipeline, receive the negative electrode water outlet from cathode chamber；
Wherein, the anode in the anode chamber connects the negative electrode in the cathode chamber by external circuit.
7. filter-type biological-cathode microbiological desalination cell according to claim 6, it is characterised in that the filter
For carrying out filtration treatment to entering the anode water outlet in cathode chamber, suspension therein, bacterium and partial organic substances are removed；
And/or described aerator is located at the lower section of filter, and the anode in the cathode chamber is gone out by the aerator
Water carries out Air Exposure, while realizing the electricity production of negative electrode, the removal of pollutant and reducing the pollution speed of filter.
8. filter-type biological-cathode microbiological desalination cell according to claim 6, it is characterised in that the material of the anode
Material includes carbon-based material and/or metal material；And/or the material of the negative electrode includes carbon-based material and/or metal material；With/
Or the anode electricity-producing microorganism includes Shewanella (Shewanella)；And/or the negative electrode electricity-producing microorganism includes the thin end of the scroll
Bacterium (Geobacter).
9. filter-type biological-cathode microbiological desalination cell according to claim 6, it is characterised in that the filter
Including filter membrane；And/or one or more in the filter membrane organic film, inoranic membrane and metal film；And/or the filter membrane
Aperture be 50-2000nm.
10. filter-type biological-cathode microbiological desalination cell according to claim 6, it is characterised in that the ion is handed over
Changing film includes the cation-exchange membrane and anion-exchange membrane that are arranged alternately, is sun near the amberplex of anode side
Amberplex, near negative electrode side the amberplex be anion-exchange membrane, by it is described be arranged alternately sun from
Proton exchange and anion-exchange membrane form the light room and dense room at interval；And/or the amberplex is the friendship of electrodialysis ion
Change film；And/or the thickness of the amberplex is 0.2-0.5mm, transmitance >=90%, exchange capacity >=1mol/kg, explosion
Intensity >=0.3MPa.
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