CN110240367A - A kind of sewage disposal system and method that carbon synchronous nitrogen and phosphorus efficiently removes - Google Patents
A kind of sewage disposal system and method that carbon synchronous nitrogen and phosphorus efficiently removes Download PDFInfo
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- CN110240367A CN110240367A CN201910657353.1A CN201910657353A CN110240367A CN 110240367 A CN110240367 A CN 110240367A CN 201910657353 A CN201910657353 A CN 201910657353A CN 110240367 A CN110240367 A CN 110240367A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000010865 sewage Substances 0.000 title claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 36
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 26
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 26
- 239000011574 phosphorus Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000000243 photosynthetic effect Effects 0.000 claims abstract description 49
- 230000004044 response Effects 0.000 claims abstract description 48
- 239000012528 membrane Substances 0.000 claims abstract description 26
- 238000009292 forward osmosis Methods 0.000 claims abstract description 21
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 7
- AKVPUSMVWHWDGW-UHFFFAOYSA-N [C].[N].[P] Chemical compound [C].[N].[P] AKVPUSMVWHWDGW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000005684 electric field Effects 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 13
- 239000005416 organic matter Substances 0.000 claims description 12
- 241000894006 Bacteria Species 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims description 9
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- 230000029553 photosynthesis Effects 0.000 claims description 4
- 238000010672 photosynthesis Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000003204 osmotic effect Effects 0.000 claims description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 2
- -1 polytetrafluoroethylene ethylene Polymers 0.000 claims description 2
- 241000195493 Cryptophyta Species 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 239000000356 contaminant Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 3
- 239000010405 anode material Substances 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 125000001477 organic nitrogen group Chemical group 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- 239000003225 biodiesel Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 238000001471 micro-filtration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 241000195649 Chlorella <Chlorellales> Species 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- DJFBJKSMACBYBD-UHFFFAOYSA-N phosphane;hydrate Chemical compound O.P DJFBJKSMACBYBD-UHFFFAOYSA-N 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/445—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
-
- 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
-
- 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
- C02F3/28—Anaerobic digestion 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
-
- 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
Abstract
The present invention provides a kind of sewage disposal systems and method that carbon synchronous nitrogen and phosphorus efficiently removes, its system includes the raw water bucket being sequentially communicated, anode chamber, photosynthetic response pond and draws liquid pool, it is provided with anion-exchange membrane between the anode chamber and photosynthetic response pond, in photosynthetic response pond and draws and is provided with forward osmosis membrane between liquid pool；Anode is provided in the anode chamber, the photosynthetic response pond is loaded with microalgae suspension；It is described draw liquid pool and be loaded with draw liquid, cathode is equipped in liquid pool drawing, the cathode is connected by external circuit with the indoor anode of the anode.The present invention is by organically combining positive infiltration technology, microalgae denitrification dephosphorization technique and bioelectrochemistry technology, forward osmosis membrane algae source can be polluted and be effectively controlled while realizing that sewage simultaneous removing carbon nitrogen phosphorus and algae water efficiently separate, operation of the present invention is simple, it is easy to control, sewage treating efficiency is high, has broad application prospects.
Description
Technical field
The present invention relates to a kind of dirty water living creature processing techniques, relate in particular to a kind of dirt that carbon synchronous nitrogen and phosphorus efficiently removes
Water treatment system and method.
Background technique
With the fast development of China human mortality quantity continued to increase with industrial and agricultural production, human being's production and sanitary sewage
Discharge increasing, a large amount of environmental contaminants are discharged into water body, and cause receiving water body environment to accelerate to deteriorate, in recent years, I
The water environment eutrophication of state shows the trend for accelerating to deteriorate, and it is dirty that the eutrophication of surface water body has become China's water
One of key problem of dye.The pollutants such as nitrogen, phosphorus in water body are the key factors for leading to water eutrophication, and are largely contained
The discharge of nitrogen, phosphorus sewage is to lead to the main reason for nitrogen and phosphorus pollution object concentration increases in receiving water body, researches and develops the de- of economical and efficient
Nitrogen dephosphorization technique solves one of the vital task of China's water pollution problems by becoming.
Currently, the denitrification dephosphorization technique that China's sewage plant is widely used has A2/ O, SBR and oxidation ditch process, these tradition
Although denitrification dephosphorization technique technology maturation, process stabilizing, there are still nitrogen phosphorus simultaneously removal effect it is bad, investment operating cost
Height equal a series of problems low with recovery utilization rate.Algae can effectively absorb the nutrients such as Water phosphorus by photosynthesis
Matter can be realized effectively removing for nitrogen phosphorus while completing the growth metabolism of itself, in addition, microalgae has, fat content is high,
Growth rate is fast, it is considered to be biodiesel raw material most with prospects.
Sewage is handled using microalgae, the harvest for realizing the efficient removal and micro algae biomass of nitrogen phosphorus in sewage can be synchronized, so
And microalgae cell individual is small, for density close to water, surface is negatively charged, these characteristics make microalgae cell be in water compared with
Stable suspended state is difficult to realize natural separation by gravity precipitating as activated sludge, and algae water separates not exclusively meeting
Frustule is caused to be largely lost, to influence the treatment effect and stability of system.Further, since most of microalgae belongs to autotrophy
Type biology, it is limited to organic pollutant removal ability, and the excessively high growth that can inhibit microalgae of organic concentration, therefore, microalgae is dirty
Water treatment system is often used as the postposition unit of aerobic secondary sewage processing system, for the removal to nitrogen phosphorus in secondary effluent,
Microalgae is ammonia nitrogen > organic nitrogen > nitrate nitrogen > nitrite nitrogen using sequencing to nitrogen source, the nitrogen source master in municipal sewage
To exist in the form of ammonia nitrogen and organic nitrogen, sewage is after the processing of second level aerobic system, 90% or more ammonia nitrogen and organic nitrogen quilt
It is oxidized to the nitrate nitrogen or nitrite nitrogen for being not easy to be utilized by algae, so as to cause the drop of microalgae processing system nitric efficiency
It is low, meanwhile, there are a large amount of poisonous and harmful substances in sewage, will lead to the decline of activity of microalgae and reproductive capacity, this, which also will affect, is
The nitrogen phosphorus ligands efficiency of system.
Membrane filtration technique is combined with microalgae sewage disposal technology, can effectively solve the problem that traditional microalgae sewage disposal technology
The existing difficult problem low with biomass of algae water separation, however traditional ultrafiltration and microfiltration film is to the organic matter and nitrogen of low molecular weight
The pollutants such as phosphorus recycling can not achieve effective retention, when microalgae is bad to pollutant removal in system, be discharged water
Matter will receive influence.In addition, ultrafiltration and microfiltration film must just be able to achieve the separation of algae water under the action of impressed pressure drives, in this way
High operating cost can not only be generated and also result in serious fouling membrane, further increase the operation and maintenance cost of system.
Summary of the invention
It is an object of the invention to provide a kind of sewage disposal systems and method that carbon synchronous nitrogen and phosphorus efficiently removes, to solve
Activity of microalgae is low in existing microalgae sewage disposal system, nitrogen phosphorus ligands low efficiency, the traditional membrane filtration technique separated for algae water
Middle fouling membrane seriously and high-cost problem.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of sewage treatment that carbon synchronous nitrogen and phosphorus efficiently removes
System, including be sequentially communicated raw water bucket, anode chamber, photosynthetic response pond and draw liquid pool, in the anode chamber and photosynthetic response
It is provided with anion-exchange membrane between pond, in the photosynthetic response pond and draws and is provided with forward osmosis membrane between liquid pool；
It is provided with anode in the anode chamber, is attached with anaerobic bacteria and electricity production bacterium in anode surface；It is set in the anode chamber
Be equipped with anode chamber's water inlet pipe and anode chamber's outlet pipe, anode chamber's water inlet pipe is connected with the raw water bucket, anode chamber's outlet pipe with
The photosynthetic response pond is connected；
The photosynthetic response pond is loaded with microalgae suspension, is equipped with aerator in the bottom in photosynthetic response pond；
It is described draw liquid pool and be loaded with draw liquid, cathode is equipped in liquid pool drawing, the cathode passes through external circuit and the sun
Extremely indoor anode is connected, and load is provided on the external circuit；The liquid pool that draws is filled configured with conductivity on-line control
It sets, is equipped at the top for drawing liquid pool and draws liquid pool outlet pipe.
The anode is made of carbon cloth, carbon felt, carbon paper, carbon brush or graphite plate, and the middle part of anode chamber is arranged in anode.
It is equipped with intake pump between anode chamber's water inlet pipe and raw water bucket, is equipped with liquid at the top in the photosynthetic response pond
Level controller, the fluid level controller are electrically connected with intake pump, and fluid level controller is used to monitor the liquid level and root in photosynthetic response pond
According to the operation of liquid surface height controlling intake pump.
The aerator is connected with air pump, and aerator is used to provide in carbon dioxide to photosynthetic response pond and makes microalgae
Suspension mixing is complete.
The cathode for drawing liquid pool is made of carbon cloth or carbon paper, and cathode setting is to draw liquid pool opposite with forward osmosis membrane
Side wall in, air is coated with carbon based layer and polytetrafluoroethylene ethylene layer to cathode plane on one side outward, and cathode is towards the one side for drawing liquid
It is coated with Pt/C catalyst layer.
A kind of sewage water treatment method that carbon synchronous nitrogen and phosphorus efficiently removes, comprising the following steps:
A, above-mentioned sewage disposal system is set；
B, opening intake pump makes the sewage in raw water bucket enter anode chamber, the anaerobic bacteria and produce electricity bacterium for sewage that anode surface adheres to
In part carbon nitrogen phosphorus organic matter degradation, while producing electricity bacterium and generating electronics and by electron transmission to anode, make anode and cathode it
Between form internal electric field；
C, through anode chamber processing sewage enter photosynthetic response pond after, under the photosynthesis of microalgae consume sewage in ammonia nitrogen and
Phosphorus, in the NO that photosynthetic response Chi Zhongwei is completely removed3 -And NO2 -Entered under the action of internal electric field by anion-exchange membrane
Then anode chamber is further removed under the action of anaerobic bacteria；
D, the hydrone in photosynthetic response pond, which enters in the case where drawing the effect of liquid osmotic pressure through forward osmosis membrane, draws liquid pool, then leads to
It crosses the liquid outlet pipe that draws drawn at the top of liquid pool and realizes overflow water outlet.
Aerator provides carbon dioxide for microalgae and is sufficiently mixed the organic matter in sewage with microalgae and contacts.
Internal electric field makes electronegative organic matter far from forward osmosis membrane, inhibits forward osmosis membrane pollution.
The beneficial effects of the present invention are: the present invention be arranged anode chamber, photosynthetic response pond and draw liquid pool and each serve as drop
The effect of organic matter, denitrogenation dephosphorizing and the separation of algae water is solved, three reaction chamber synergy can be realized the same of carbon nitrogen phosphorus in sewage
Step efficiently removal.The indoor electricity-producing microorganism of anode, which can effectively degrade, the organic matter in sewage and to be produced electricl energy, while anode chamber
Anaerobic environment can be avoided the ammonia nitrogen in sewage and be oxidized into and be not easy to the nitrate nitrogen that algae utilizes, in photosynthetic response pond
Microalgae is metabolized the efficient removal that can be realized nitrogen and phosphorus pollutants in sewage, and the crown_interception of forward osmosis membrane can be such that algae water efficiently separates
It is final to realize the high-quality water outlet of system.In addition, the internal electric field generated between anode material and cathode material can produce microalgae cell
Raw electro photoluminescence effect, can effectively improve the activity of microalgae, to promote contaminant removal efficiency, electric field can drive photosynthetic anti-
The NO that Ying Chiwei is completely removed3 - And NO2 - Enter anaerobism anode chamber through anion-exchange membrane, goes it further
It removes.The electric field generated between anode and cathode can also drive the film surface pollution object for being attached to forward osmosis membrane surface to be detached from film surface,
To the generation of decelerating membrane pollution.
The present invention is by organically combining positive infiltration technology, microalgae denitrification dephosphorization technique and bioelectrochemistry technology, in reality
Existing sewage simultaneous removing carbon nitrogen phosphorus and algae water, which can pollute forward osmosis membrane algae source while efficiently separating, to be effectively controlled,
Operation of the present invention is simple, easy to control, and sewage treating efficiency is high, has broad application prospects, and is carbon nitrogen and phosphorus pollution in sewage
The efficient removal of object provides an effective approach.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of sewage disposal system of the present invention.
In figure: 1-raw water bucket；2-intake pumps；3-anode chambers；4-anode chamber's water inlet pipes；5-anodes；6-anode chambers
Outlet pipe；7-anion-exchange membranes；8-photosynthetic response ponds；9-aerators；10-air pumps；11-fluid level controllers；12—
Forward osmosis membrane；13-draw liquid pool；14-draw liquid pool outlet pipe；15-cathodes；16-conductivity on-line control devices；17—
Conducting wire；18-loads.
Specific embodiment
As shown in Figure 1, integral type forward osmosis membrane-photosynthetic organism electrochemistry that sewage carbon synchronous nitrogen and phosphorus of the present invention efficiently removes
System includes the raw water bucket 1 being sequentially communicated, anode chamber 3, photosynthetic response pond 8 and draws liquid pool 13；Anode chamber 1, photosynthetic response pond 8
It is arranged with 13 side by side parallel of liquid pool is drawn, is separated between anode chamber 1 and photosynthetic response pond 8 with anion-exchange membrane 7, photosynthetic response
Pond 8 and drawing is separated between liquid pool 13 with forward osmosis membrane 12.In the present embodiment, raw water bucket 1, anode chamber 3, photosynthetic response pond 8
It is made with the pond body for drawing liquid pool 13 of organic glass, anode chamber 3, photosynthetic response pond 8 and the volume difference for drawing liquid pool 13
For 5L, 5L and 2.5L, the length in anode chamber 3 and photosynthetic response pond 8 is respectively 18cm, 10cm and 28cm, draws liquid pool
13 length is respectively 18cm, 5cm and 28cm.
It is provided with anode 5 in anode chamber 3, is attached with anaerobic bacteria and electricity production bacterium on 5 surface of anode, anaerobic bacteria is denitrification
Bacterium etc.；Anode chamber's water inlet pipe 4 and anode chamber's outlet pipe 6 are located at the left side wall lower part and right side wall top of anode chamber 1, water inlet
The water inlet end of pump 2 is connect with 1 outlet pipe of raw water bucket, and the water outlet of intake pump 2 is connect with anode chamber's water inlet pipe 4.Anode material by
Carbon cloth, carbon felt, carbon paper, carbon brush or graphite plate are made, and the cental axial position of anode chamber is arranged in anode.
Photosynthetic response pond 8 is loaded with microalgae suspension, is equipped with aerator 9 in the bottom in photosynthetic response pond 8；Aerator
9 are connected with air pump 10, and aerator 9 is used to provide in carbon dioxide and make to photosynthetic response pond 8 mixing of microalgae suspension complete.
The top in photosynthetic response pond is equipped with fluid level controller (liquid level relay) 11, and fluid level controller 11 is electrically connected with intake pump 2, liquid level
Controller 11 is used to monitor the liquid level in photosynthetic response pond 8 and according to the operation of liquid surface height controlling intake pump 2.
It draws liquid pool 13 and is loaded with and draw liquid, be equipped with cathode 15 in liquid pool 13 drawing, cathode 15 passes through conducting wire 17 and sun
Extremely indoor anode 5 is connected, and is provided with load 18 on conductor 17.Cathode 15, which is located at, draws liquid pool side wall, forward osmosis membrane 12
Opposite, cathode 15 can be made of carbon cloth or carbon paper brushing waterproof ventilative layer and catalyst layer.The distance between anode 5 and cathode 15
For 17cm.Liquid pool 13 is drawn configured with conductivity on-line control device 16, the probe of conductivity on-line control device 16 is immersed in
It draws in liquid, on-line monitoring draws the conductivity of liquid and controls high concentration and draw the dosage of liquid and draws to adjust to draw in liquid pool
The conductivity of liquid, makes it maintain prescribed limit.It is equipped at the top for drawing liquid pool and draws liquid pool outlet pipe 14.
The present invention in application, intake pump 2 by the sewage containing organic matter, ammonia nitrogen and phosphorus in raw water bucket 1 by anode chamber into
Water pipe 4 squeezes into anode chamber 3, and the common anaerobic bacteria and electricity production bacterium of 5 surface of the anode attachment in anode chamber 3 have the part in sewage
The degradation of machine object, electricity production bacterium generates electronics while degradation of organic substances and by electron transmission to anode material, and then passes through dispatch from foreign news agency
Road is transferred to cathode 15 and forms electric current, forms internal electric field between anode 5 and cathode 15.
Chlorella carries out the ammonia nitrogen and phosphorus in photosynthesis consumption sewage under illumination condition in photosynthetic response pond 8, real
Existing nitrogen phosphorus effectively removes.In addition, the NO not being completely removed in photosynthetic response pond 83 -And NO2 -It can be in the effect of electric field force
Enter anaerobism anode chamber 3 by anion-exchange membrane 7, is further removed under the action of denitrifying bacterium.Air pump 10 will
Air squeezes into photosynthetic response pond 8 by the aerator 9 of 8 bottom of photosynthetic response pond, and aeration effect can provide CO for microalgae2,
Guarantee microalgae mixed liquor be in is thoroughly mixed state, prevent microalgae from sinking, at the same its perturbation action can promote pollutant with it is micro-
Contact between algae improves contaminant removal efficiency.
Hydrone in photosynthetic response pond 8 is in the case where drawing the driving for drawing the effect of liquid osmotic pressure in liquid pool 13 through positive infiltration
Film 12, which enters, draws liquid pool 13, realizes overflow water outlet by drawing liquid outlet pipe 14, forward osmosis membrane 12 can efficiently retain photosynthetic
The pollutants such as the organic matter and nitrogen and phosphorous nutrient that do not remove in reaction tank 8 guarantee the water outlet of high quality.Microalgae in the process of running
The negatively charged pollutant such as cell and the extracellular organic matter of microalgae can deposit in 12 surface adhesion of forward osmosis membrane and cause fouling membrane, shadow
Film effluent flux is rung, and the electric field generated between anode 5 and cathode 15 in a system of the invention can make these electronegative passes
Key membrane contaminant is played the role of inhibiting fouling membrane by the electric field force far from film surface direction.In addition, the effect of electric field can pierce
Swash the metabolic activity of microalgae, strengthens removal of the microalgae to nitrogen and phosphorous nutrient.The microalgae that the system is collected can be used for biodiesel
The resource utilization of dirty water pollutant is realized in preparation.
Claims (8)
1. a kind of sewage disposal system that carbon synchronous nitrogen and phosphorus efficiently removes, characterized in that including be sequentially communicated raw water bucket, anode
Room, photosynthetic response pond and liquid pool is drawn, anion-exchange membrane is provided between the anode chamber and photosynthetic response pond, described
It photosynthetic response pond and draws and is provided with forward osmosis membrane between liquid pool；
It is provided with anode in the anode chamber, is attached with anaerobic bacteria and electricity production bacterium in anode surface；It is set in the anode chamber
Be equipped with anode chamber's water inlet pipe and anode chamber's outlet pipe, anode chamber's water inlet pipe is connected with the raw water bucket, anode chamber's outlet pipe with
The photosynthetic response pond is connected；
The photosynthetic response pond is loaded with microalgae suspension, is equipped with aerator in the bottom in photosynthetic response pond；
It is described draw liquid pool and be loaded with draw liquid, cathode is equipped in liquid pool drawing, the cathode passes through external circuit and the sun
Extremely indoor anode is connected, and load is provided on the external circuit；The liquid pool that draws is filled configured with conductivity on-line control
It sets, is equipped at the top for drawing liquid pool and draws liquid pool outlet pipe.
2. the sewage disposal system that carbon synchronous nitrogen and phosphorus efficiently removes according to claim 1, characterized in that the anode is by carbon
Cloth, carbon felt, carbon paper, carbon brush or graphite plate are made, and the middle part of anode chamber is arranged in anode.
3. the sewage disposal system that carbon synchronous nitrogen and phosphorus efficiently removes according to claim 1, characterized in that in the anode chamber
It is equipped with intake pump between water inlet pipe and raw water bucket, is equipped with fluid level controller, the liquid level control at the top in the photosynthetic response pond
Device processed is electrically connected with intake pump, and fluid level controller is used to monitor the liquid level in photosynthetic response pond and according to liquid surface height controlling intake pump
Operation.
4. the sewage disposal system that carbon synchronous nitrogen and phosphorus efficiently removes according to claim 1, characterized in that the aerator
It is connected with air pump, aerator is used to provide carbon dioxide to photosynthetic response pond and keeps the mixing of microalgae suspension complete.
5. the sewage disposal system that carbon synchronous nitrogen and phosphorus efficiently removes according to claim 1, characterized in that described to draw liquid pool
Cathode be made of carbon cloth or carbon paper, cathode, which is arranged in, to be drawn in the liquid pool side wall opposite with forward osmosis membrane, and cathode faces out
Side air is coated with carbon based layer and polytetrafluoroethylene ethylene layer on one side, and cathode is coated with Pt/C catalyst layer towards draw liquid on one side.
6. a kind of sewage water treatment method that carbon synchronous nitrogen and phosphorus efficiently removes, characterized in that the following steps are included:
A, any sewage disposal system of claim 1 ~ 5 is set；
B, opening intake pump makes the sewage in raw water bucket enter anode chamber, the anaerobic bacteria and produce electricity bacterium for sewage that anode surface adheres to
In part carbon nitrogen phosphorus organic matter degradation, while producing electricity bacterium and generating electronics and by electron transmission to anode, make anode and cathode it
Between form internal electric field；
C, through anode chamber processing sewage enter photosynthetic response pond after, under the photosynthesis of microalgae consume sewage in ammonia nitrogen and
Phosphorus, in the NO that photosynthetic response Chi Zhongwei is completely removed3 -And NO2 -Entered under the action of internal electric field by anion-exchange membrane
Then anode chamber is further removed under the action of anaerobic bacteria；
D, the hydrone in photosynthetic response pond, which enters in the case where drawing the effect of liquid osmotic pressure through forward osmosis membrane, draws liquid pool, then leads to
It crosses the liquid outlet pipe that draws drawn at the top of liquid pool and realizes overflow water outlet.
7. the sewage water treatment method that carbon synchronous nitrogen and phosphorus according to claim 6 efficiently removes, characterized in that aerator is
Microalgae provides carbon dioxide and is sufficiently mixed the organic matter in sewage with microalgae and contacts.
8. the sewage water treatment method that carbon synchronous nitrogen and phosphorus according to claim 6 efficiently removes, characterized in that internal electric field makes band
The organic matter of negative electricity inhibits forward osmosis membrane pollution far from forward osmosis membrane.
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