CN203922925U - Microorganism electrolysis cell and duckweed are cultivated the device in conjunction with recycling treatment organic waste water - Google Patents

Microorganism electrolysis cell and duckweed are cultivated the device in conjunction with recycling treatment organic waste water Download PDF

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Publication number
CN203922925U
CN203922925U CN201420152614.7U CN201420152614U CN203922925U CN 203922925 U CN203922925 U CN 203922925U CN 201420152614 U CN201420152614 U CN 201420152614U CN 203922925 U CN203922925 U CN 203922925U
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China
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electrolysis cell
microorganism electrolysis
duckweed
waste water
organic waste
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CN201420152614.7U
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蒋海明
潘建刚
李侠
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Inner Mongolia University of Science and Technology
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Inner Mongolia University of Science and Technology
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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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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Abstract

The utility model relates to the device that a kind of microorganism electrolysis cell and duckweed are cultivated the recycling treatment organic waste water that combines, it comprises microorganism electrolysis cell and two unit of bioreactor, microorganism electrolysis cell comprises microorganism electrolysis cell housing, in microorganism electrolysis cell housing, be provided with and change baffle plate, anode electrode and the cathode electrode that described organic sewage flows to, described microorganism electrolysis cell and bioreactor are communicated with, and described organic sewage enters bioreactor through described microorganism electrolysis cell is laggard; In described bioreactor, cultivate and have duckweed.The utility model can overcome the deficiency existing while utilizing respectively microorganism electrolysis cell and duckweed to process organic waste water simultaneously, not only improved the treatment effect of sewage, and the biofuel methane obtaining and the biomass cost that can compensate sewage disposal, for effectively processing organic sewage, provide new way, energy-saving and emission-reduction and environmental improvement have all been had great importance.

Description

Microorganism electrolysis cell and duckweed are cultivated the device in conjunction with recycling treatment organic waste water
Technical field
The utility model relates to a kind of wastewater processing technology.Particularly, the utility model relates to the device that a kind of microorganism electrolysis cell and duckweed are cultivated the recycling treatment organic waste water that combines, can be widely used in the processing of organic waste water, when improving water treatment effect, can obtain biofuel and biomass, and can reduce cost for wastewater treatment.
Background technology
The a large amount of organic waste water of the annual generation in the whole world, traditional biological wastewater treatment process not only needs to consume a large amount of energy, and produces a large amount of mud, and also very high to the processing costs of mud.Thereby need the high and low substitute technology of cost of development efficiency.Meanwhile, energy shortage is also the Main Bottleneck of restriction 21 century human development.Therefore exploiting economy, novel energy is imperative efficiently, wherein biological new forms of energy are one of main study hotspots.Microbiological fuel cell (Microbial fuel cell, MFC) is to take the device of microorganism as catalyst oxidation organism generation current.MFC has overcome the shortcoming of traditional biological wastewater treatment process, is the biological wastewater treatment new technology of a kind of emerging wastewater treatment and synchronous electrogenesis.At present, MFC has been applied to the processing while electrogenesis of various waste water, comprises sanitary wastewater and trade effluent.To the organism in waste water, (concentration represents COD) to have good removal effect with chemical oxygen demand (COD) Chemical Oxygen Demand to MFC, utilizes the MFC can be by the organic matter removal of 80-99% in waste water.Although it is not MFC has good removal effect to the COD in waste water, but good to the removal effect of nitrogen and phosphorus.In order to improve the clearance of nitrogen, MFC is combined and developed many association systems with other method of denitrogenating, as microbiological fuel cell and nitrator are coupled, in anode of microbial fuel cell chamber, ammonia nitrogen is flowed through after nitrator and is oxidized to nitrate radical by nitrobacteria, and then nitrate radical is reduced to nitrogen and removes at the cathode compartment of microbiological fuel cell again.Although these systems can improve the clearance of nitrogen, exist nitrogen remove not exclusively or system too complexity be not easy to the deficiencies such as amplification, and do not pay close attention to the removal of phosphorus.In addition, also can build micro-algae type microbiological fuel cell, by micro-algae photosynthesis synthesising biological matter, consume nitrogen and the phosphorus in sewage, thereby reach the object of removing nitrogen phosphorus and purifying waste water.But the solid particulate matter in sanitary sewage and suspended solid are more, cause the transmittance of sewage very low, therefore before using, must remove solid particulate matter in sewage and suspended solid with raising transmittance by methods such as filtration, this process not only consume energy and efficiency low.Meanwhile, the results cost of micro-algae is high, if do not gather in the crops, the nitrogen of absorption and phosphorus can be discharged in water again.In addition, the organic concentration simultaneously existing in sanitary sewage is higher, is conducive to the growth of bacterium, and the raised growth of bacterium breeding is unfavorable for, even suppresses micro algae growth.
Microorganism electrolysis cell (Microbial Electrolysis Cell, MEC) be a kind of new technology that has merged sewage disposal and produced the energy in recent years developing rapidly, the multi-form energy can when being carried out a biological disposal upon, sewage be obtained, as the novel process of sewage disposal.If utilize microorganism electrolysis cell to substitute above-mentioned microbiological fuel cell, can avoid the negative electrode required energy consumption of air of exposing to the sun, micro-algae is changed into the problem of the difficult results that face when duckweed just can avoid using micro-algae simultaneously.
Summary of the invention
In order to solve the limitation that traditional waste water aerobic is carried out a biological disposal upon, micro-algae type microbiological fuel cell exists while processing organic waste water system and duckweed individual curing organic waste water, the utility model provides a kind of microorganism electrolysis cell and duckweed to cultivate the device of the recycling treatment organic waste water that combines, when processing organism sewage, can obtain biofuel methane and biomass, the biomass of acquisition can be used as the raw material that bioenergy is produced.The utility model can overcome while utilizing separately microorganism electrolysis cell to process organic sewage the defect that cannot directly process organic sewage to nitrogen and phosphorus poor removal effect and duckweed simultaneously, not only improved the treatment effect of sewage, and the biofuel methane obtaining and the biomass cost that can compensate sewage disposal, for effectively processing organic sewage, provide new way, energy-saving and emission-reduction and environmental improvement have all been had great importance.In addition, the utility model discloses and a kind ofly can overcome rainy weather and the haze weather technical scheme on processing efficiency impact, to realize the automatic control of sewage treatment under Different climate condition.
For achieving the above object, the utility model adopts following technical scheme:
The utility model provides a kind of microorganism electrolysis cell and duckweed to cultivate the device of the recycling treatment organic sewage that combines, and it is characterized in that: comprise microorganism electrolysis cell, two unit of bioreactor; Microorganism electrolysis cell comprises microorganism electrolysis cell housing 2, in microorganism electrolysis cell housing 2, be provided with and change baffle plate 3, anode electrode 4 and the cathode electrode 5 that described organic sewage flows to, anode electrode 4 is connected with cold end with the hot end of D.C. regulated power supply 8 by titanium silk wire respectively with cathode electrode 5; Described microorganism electrolysis cell and bioreactor are communicated with, and described organic sewage enters bioreactor through described microorganism electrolysis cell is laggard; In described bioreactor, cultivate and have duckweed.
Described a kind of microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic sewage that combines, characterized by further comprising principal controller, described discharge of sewage control valve, outlet water control valve, secondary light source, discharge control valve are connected with the signal output part of principal controller, and described intensity of illumination detector, concentration of nitrogen and phosphorus detector are connected with the signal input part of principal controller.
Described a kind of microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic sewage that combines, and it is characterized in that described secondary light source is white light LEDs, and described microorganism electrolysis cell is without film single-chamber microbial electrolyzer.
Described a kind of microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic sewage that combines, and it is characterized in that: microorganism electrolysis cell housing and bioreactor adopt Steel Concrete or carbon steel material to make.
Described microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic sewage that combines, and it is characterized in that: described cathode electrode is carbon cloth, granular graphite, reticulated vitreous carbon, granulated active carbon or carbon fiber brush, and in the surface attachment of cathode electrode methanobacterium palustredeng electrochemical activity methanogen.
Described microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic sewage that combines; it is characterized in that: described anode electrode is carbon cloth, granular graphite, reticulated vitreous carbon, granulated active carbon or carbon fiber brush, and in anode electrode surface attachment electrogenesis microorganism.
Described a kind of microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic sewage that combines, and it is characterized in that: the current potential of cathode electrode is-0.5V ~-1.5V, and the output voltage of described D.C. regulated power supply is-2.0V ~ 2.0V.
Described a kind of microorganism electrolysis cell and duckweed are cultivated the device of the recycling treatment organic waste water that combines, it is characterized in that the waste water of its processing, for being applicable to the organic sewage of microorganism growth, comprises sanitary sewage, food processing wastewater, amylum wastewater or beer waste water.
The invention also discloses in addition a kind of microorganism electrolysis cell and duckweed and cultivate the device of the recycling treatment organic sewage that combines, it is characterized in that: comprise two unit of microorganism electrolysis cell and bioreactor, microorganism electrolysis cell comprises microorganism electrolysis cell housing 2, in microorganism electrolysis cell housing 2, be provided with baffle plate 3, anode electrode 4 and cathode electrode 5, anode electrode 4 is connected with cold end with the hot end of D.C. regulated power supply 8 by titanium silk wire respectively with cathode electrode 5, D.C. regulated power supply 8 combines for solar electrical energy generation and accessory power supply, on microorganism electrolysis cell housing 2 left side walls, be provided with sewage water inlet pipe 1, on sewage water inlet pipe 1, be provided with discharge of sewage control valve, microorganism electrolysis cell housing 2 tops are provided with gas-collecting pipe 6, on microorganism electrolysis cell housing 2 right side walls, be provided with rising pipe 10, on rising pipe 10, be provided with outlet water control valve, bioreactor top is provided with secondary light source, intensity of illumination detector, concentration of nitrogen and phosphorus detector and vent pipe 12, is provided with discharge control valve on vent pipe 12, in bioreactor, cultivates and has duckweed.
The device that a kind of device that utilizes microorganism electrolysis cell and duckweed to cultivate the recycling treatment organic sewage that combines provided by the utility model is disposed of sewage, first organism sewage is injected in microorganism electrolysis cell to the nutrition source as anode electrogenesis microorganism growth, anode electrogenesis microorganism carries out katabolism to the organism in sewage, produces CO when disposing of sewage 2, H +and electronics, the CO that the electroactive methanogen simultaneously adhering in the auxiliary lower microorganism electrolysis cell cathode electrode surface of electricity produces anode electrogenesis microbial metabolism organism 2, H +and electronics is converted into biofuel methane, and then the sewage of processing with microorganism electrolysis cell cultivates duckweed, utilizes duckweed further to remove remaining nitrogen and phosphorus in sewage, obtains biomass simultaneously, and the biomass of acquisition can be used as the raw material that bioenergy is produced.
The obtainable beneficial effect of the utility model is: improved the treatment effect of organism and nitrogen phosphorus in sewage, and the biofuel methane obtaining and the biomass cost that can compensate sewage disposal; In addition, by secondary light source and intensity of illumination detector are set, greatly improved the ability of whole system opposing Changes in weather.
Accompanying drawing explanation
Microorganism electrolysis cell described in Fig. 1 embodiment cultivates with duckweed the recycling treatment organic waste water principle schematic that combines.
Fig. 2 the utility model Controlling System connection diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Microorganism electrolysis cell described in Fig. 1 embodiment cultivates with duckweed the recycling treatment organic waste water principle schematic that combines.The present embodiment utilizes microorganism electrolysis cell to cultivate with duckweed combine recycling treatment organic waste water and device, specifically operates with step in the following order:
(1) microorganism electrolysis cell and bioreactor coupled system build
Referring to Fig. 1, microorganism electrolysis cell and bioreactor coupled system comprise microorganism electrolysis cell and two unit of bioreactor; Microorganism electrolysis cell comprises microorganism electrolysis cell housing 2, in microorganism electrolysis cell housing 2, be provided with baffle plate 3, anode electrode 4 and cathode electrode 5, anode electrode 4 is connected with cold end with the hot end of D.C. regulated power supply 8 by titanium silk wire respectively with cathode electrode 5, D.C. regulated power supply is that solar electrical energy generation and accessory power supply combine, using solar electrical energy generation at ordinary times as D.C. regulated power supply 8, when the electric energy producing when solar electrical energy generation is not enough to maintain microorganism electrolysis cell operation, open accessory power supply.On microorganism electrolysis cell housing 2 left side walls, be provided with sewage water inlet pipe 1, on sewage water inlet pipe 1, be provided with discharge of sewage control valve, microorganism electrolysis cell housing 2 tops are provided with gas-collecting pipe 6, on microorganism electrolysis cell housing 2 right side walls, be provided with rising pipe 10, on rising pipe 10, be provided with outlet water control valve; On bioreactor, be provided with secondary light source, intensity of illumination detector, concentration of nitrogen and phosphorus detector and vent pipe 12, on vent pipe 12, be provided with discharge control valve, in bioreactor, cultivate and have duckweed.
(2) startup of microorganism electrolysis cell and bioreactor coupled system
The microorganism electrolysis cell the utility model proposes is as follows with the start-up course that duckweed is cultivated the recycling treatment organic waste water system that combines:
1) biological-cathode is made
By electroactive methanogen methanobacterium palustrefirst with ATCC, specify the special culture media ATCC using ?in the 500 mL tape thickness rubber plug serum bottles of Medium 2487, anaerobism is cultivated [H 2-CO 2(80:20, v/v)].Before being inoculated into microorganism electrolysis cell, get after the above-mentioned medium centrifugal of 250 mL the ATCC to no oxygen, sterilizing by enriched material suspended dispersed again ?in Medium 2487 substratum, then above-mentioned cell suspension inoculation is arrived to the microorganism electrolysis cell of anaerobism, and drum fills CO immediately 2, the voltage of D.C. regulated power supply 8 is fixed as-0.9 V.Under electricity is auxiliary, the electroactive methanogen adhering to by microorganism electrolysis cell cathode surface methanobacterium palustrekatalysis by CO 2gas reduction is CH 4.Regularly the current data of microorganism electrolysis cell is sampled, after the electric current of microorganism electrolysis cell is maximum and stable, think electroactive methanogen methanobacterium palustrein cathode electrode surface, fully adhere to the completing of biological-cathode.
2) biological anode is made
The anaerobic activated sludge of sewage work of take is inoculum, and the first heavy overflowing liquid of sewage work of take is substratum, pure nitrogen gas except after oxygen in 1:9(v/v) ratio microbe inoculation electrolyzer enrichment anode electrogenesis microorganism.Microorganism electrolysis cell is batch operation, adds according to the above ratio the mixed solution of inoculum and substratum after each experiment finishes.The voltage of D.C. regulated power supply 8 is fixed as-0.9 V, regularly the current data of microorganism electrolysis cell is sampled, after the electric current of microorganism electrolysis cell is maximum and stable, think and fully adhered to electrogenesis microorganism on anode electrode surface, now the biological anode utmost point completes.
3) organic sewage is processed
After biological-cathode and biological anode complete, pending organic sewage is removed to anode electrode 4, cathode electrode 5, microorganism electrolysis cell water outlet 10 and the bioreactor 11 that oxygen is flowed through in microorganism electrolysis cell successively by water inlet pipe 1, then through water shoot 12, flow out.The voltage of D.C. regulated power supply 8 is fixed as-0.9 V simultaneously.The organism that the electrogenesis microorganism of anode electrode 4 surface attachment be take in sewage is substrate, produces CO when disposing of sewage 2, H +and electronics, the CO of generation 2, H +and electronic migration is to negative electrode, simultaneously in auxiliary lower cathode electrode 5 surface attachment of electricity methanobacterium palustreetc. electroactive methanogen, catch CO 2, catalysis CO 2, H +and electronics is converted into biofuel methane, concrete chemical equation is as follows:
Anode electrode
Cathode electrode
And the CO producing 2and CH 4deng gas, through gas-collecting pipe 6, discharge and collect.
The duckweed that screening is obtained is inoculated into bioreactor 11, and the water outlet of microorganism electrolysis cell of take is nutrient solution, utilizes duckweed photosynthesis to remove remaining nitrogen and phosphorus in sewage, thereby reaches the object of removing nitrogen phosphorus and purifying waste water, and obtains duckweed biomass simultaneously.Meanwhile, regularly the duckweed in bio-reactor 11 is gathered in the crops, with submerged after preventing duckweed death, discharge nitrogen and the phosphorus absorbing.Waste water is after optimization process, and the concentration of the chemical oxygen demand (COD) in waste water, nitrogen and phosphorus is lower than the concentration of national grade one discharge standard requirement.

Claims (9)

1. microorganism electrolysis cell and duckweed are cultivated a device for the recycling treatment organic waste water that combines, it is characterized in that: comprise microorganism electrolysis cell, two unit of bioreactor; Microorganism electrolysis cell comprises microorganism electrolysis cell housing (2), in microorganism electrolysis cell housing (2), be provided with and change baffle plate (3), anode electrode (4) and the cathode electrode (5) that described organic waste water flows to, anode electrode (4) is connected with cold end with the hot end of D.C. regulated power supply (8) by titanium silk wire respectively with cathode electrode (5); Described microorganism electrolysis cell and bioreactor are communicated with, and described organic waste water enters bioreactor through described microorganism electrolysis cell is laggard; In described bioreactor, cultivate and have duckweed.
2. a kind of microorganism electrolysis cell as claimed in claim 1 and duckweed are cultivated the device of the recycling treatment organic waste water that combines, it is characterized in that being provided with wastewater inlet pipe (1) on microorganism electrolysis cell housing (2) left side wall, wastewater inlet pipe is provided with wastewater flow control valve on (1), microorganism electrolysis cell housing (2) top is provided with gas-collecting pipe (6), on microorganism electrolysis cell housing (2) right side wall, be provided with rising pipe (10), rising pipe is provided with outlet water control valve on (10).
3. a kind of microorganism electrolysis cell as claimed in claim 1 or 2 and duckweed are cultivated the device of the recycling treatment organic waste water that combines, it is characterized in that being provided with secondary light source, intensity of illumination detector, concentration of nitrogen and phosphorus detector and vent pipe (12) on bioreactor, vent pipe is provided with discharge control valve on (12).
4. a kind of microorganism electrolysis cell as claimed in claim 3 and duckweed are cultivated the device of the recycling treatment organic waste water that combines, the device that it is characterized in that this processing organic waste water also comprises principal controller, described wastewater flow control valve, outlet water control valve, secondary light source, discharge control valve are connected with the signal output part of principal controller, and described intensity of illumination detector, concentration of nitrogen and phosphorus detector are connected with the signal input part of principal controller.
5. a kind of microorganism electrolysis cell as claimed in claim 3 and duckweed are cultivated the device of the recycling treatment organic waste water that combines, and it is characterized in that described secondary light source is LED electricity-saving lamp.
6. a kind of microorganism electrolysis cell as claimed in claim 1 or 2 and duckweed are cultivated the device of the recycling treatment organic waste water that combines, and it is characterized in that: microorganism electrolysis cell housing and bioreactor adopt Steel Concrete or carbon steel material to make.
7. a kind of microorganism electrolysis cell as claimed in claim 1 or 2 and duckweed are cultivated the device of the recycling treatment organic waste water that combines; it is characterized in that: described cathode electrode is carbon cloth, granular graphite, reticulated vitreous carbon, granulated active carbon or carbon fiber brush, and at the surface attachment electrochemical activity methanogen of cathode electrode.
8. a kind of microorganism electrolysis cell as claimed in claim 1 or 2 and duckweed are cultivated the device of the recycling treatment organic waste water that combines; it is characterized in that: described anode electrode is carbon cloth, granular graphite, reticulated vitreous carbon, granulated active carbon or carbon fiber brush, and in anode electrode surface attachment electrogenesis microorganism.
9. a kind of microorganism electrolysis cell as claimed in claim 1 or 2 and duckweed are cultivated the device of the recycling treatment organic waste water that combines, and it is characterized in that described microorganism electrolysis cell is for without film single-chamber microbial electrolyzer.
CN201420152614.7U 2014-03-31 2014-03-31 Microorganism electrolysis cell and duckweed are cultivated the device in conjunction with recycling treatment organic waste water Expired - Fee Related CN203922925U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104673843A (en) * 2015-02-27 2015-06-03 内蒙古科技大学 Method of electrically-assisting electroactive methane oxidizing bacteria to catalyze methane to produce methanol or formic acid
CN116332361A (en) * 2023-02-20 2023-06-27 中国科学院南京土壤研究所 Method for removing water body composite pesticide by utilizing duckweed-wood chip biochar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104673843A (en) * 2015-02-27 2015-06-03 内蒙古科技大学 Method of electrically-assisting electroactive methane oxidizing bacteria to catalyze methane to produce methanol or formic acid
CN116332361A (en) * 2023-02-20 2023-06-27 中国科学院南京土壤研究所 Method for removing water body composite pesticide by utilizing duckweed-wood chip biochar
CN116332361B (en) * 2023-02-20 2024-01-02 中国科学院南京土壤研究所 Method for removing water body composite pesticide by utilizing duckweed-wood chip biochar

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