CN104556371A - Method for increasing methane production efficiency of continuous-flow anaerobic reactor by continuously adding Fe3O4 nanoparticles - Google Patents

Method for increasing methane production efficiency of continuous-flow anaerobic reactor by continuously adding Fe3O4 nanoparticles Download PDF

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CN104556371A
CN104556371A CN201510063923.6A CN201510063923A CN104556371A CN 104556371 A CN104556371 A CN 104556371A CN 201510063923 A CN201510063923 A CN 201510063923A CN 104556371 A CN104556371 A CN 104556371A
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anaerobic reactor
nano particle
continuous flow
continuously
liquid
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马文成
钟丹
辛红梅
钱风越
韩洪军
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Harbin Institute of Technology
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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
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2866—Particular arrangements for anaerobic reactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/28—CH4
    • 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
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

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  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The invention discloses a method for increasing the methane production efficiency of a continuous-flow anaerobic reactor by continuously adding Fe3O4 nanoparticles and relates to a method for increasing the methane production efficiency of the continuous-flow anaerobic reactor. The method is used for solving the problems of low biogas yield and low operating efficiency of the continuous-flow anaerobic fermentation technology at home. The method comprises the following steps: firstly, feeding wastewater into a water-preparation tank, controlling the conditions of the anaerobic reactor to be as follows: the water effluent flow is 10L/d, the hydraulic retention time is 20 hours, the outer circulation flow is 100L/d, the water effluent COD is 5000mg/L, the concentration of sludge is 10g/L, the temperature of the anaerobic reactor is controlled at 34-36 DEG C and the pH of the anaerobic reactor is controlled at 6.8-7.2; secondly, daily controlling twice, wherein the controlling method is as follows: the Fe3O4 nanoparticles are added; and thirdly, detecting the yield of methane in the continuous-flow anaerobic reactor every two days. By the method, the yield of methane is significantly increased and the method is used in the field of wastewater treatment.

Description

By adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency
Technical field
The present invention relates to a kind of method promoting Continuous Flow anaerobic reactor methane phase efficiency.
Background technology
Energy shortage and environmental pollution day by day become the Main Bottleneck of the whole world and China's Sustainable development, and thus developing fungible energy source is one of focus of paying close attention to of national governments and scientist, and wherein bioenergy is considered to the substitute of fossil energy.Anaerobic biological process process organic solid waste or mud is utilized to reduce environmental pollution, the clean energies such as methane can be obtained simultaneously, anaerobic biological treatment mud is divided into four-stage usually: hydrolysis stage, product acid phase, product acetic acid stage, methane phase stage, each stage interdepends, carry out continuously, by comprise hydrolysis bacterium, acidogenic fermentation bacterium, hydrogen-producing acetogenic bacteria, homoacetogenic bacteria and methanogen microorganism species by metabolism, the organism of complexity is converted into CO 2, H 2o and a small amount of cellular products also produce biomass energy-CH 4.
The anaerobic reactor with water outlet circulatory function adopts the mode of outer circulation to improve upflow velocity, improve volumetric loading simultaneously, reduce reaction tank volume, overcome the phenomenon that short stream easily appears in granule sludge district, promote the formation of granule sludge, be conducive to making granule sludge be in swelling state, contact more abundant with the organism in waste water, mass-transfer efficiency is high, improves organic clearance.Although some anaerobic reactors are developed out already and are applied to organic waste water methane phase, rarely has report by adding Fe continuously 3o 4nano particle promotes the method for anaerobic reactor methane phase efficiency.
Researchist thinks H for a long time always 2or the carrier that formic acid can be used as syntrophism population electron transmission completes methanogenic process, but, due to H in solution 2or the impact of factor such as in the restriction of the rate of diffusion of formic acid and fermenting process, stirring, the methanogenic speed of anaerobically fermenting is restricted, and gas production rate is lower, adds the running cost of engineering.
Iron is as the most important a kind of metal of participation methanogen Metabolic activity, and the iron introducing different shape/valence state in anaerobic System can improve methanogen metabolic activity, improve system efficiency.It is present in iron-sulfur cluster is responsible for electron transport as the electron carrier of born of the same parents' internal oxidition reduction reaction, and Fe also participates in the synthesis of cytopigment, cellular oxidation enzyme in addition.But due to Fe 2+/ Fe 3+add concentration and be difficult to that control, negatively charged ion suppression, unstable chemcial property, bioavailability are low, high in cost of production problem has a strong impact on its applicability.
Summary of the invention
The present invention is that will to solve the biogas output that domestic Continuous Flow anaerobic fermentation technology exists low, the problem that operational efficiency is low, and provides a kind of by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency.
Continuous flow sewage treatment system as shown in Figure 1, this system comprises distribution reservoir 1, constant flow pump 2, dissolving tank 3, first pump 4, solution pool 5, volume pump 6, circulation tank 7, second pump 8, temperature controller 9, pH tester 10 and Continuous Flow anaerobic reactor 11, its workflow is as follows: distribution reservoir 1 li of need sewage to be processed enters Continuous Flow anaerobic reactor 11 through constant flow pump 2, if add solid Fe 3o 4nano particle, first need drop in dissolving tank 3 and disperse, solution pool 5 is promoted to through the first pump 4 after dispersion, circulation tank 7 is delivered to through volume pump 6 after being diluted to finite concentration, Continuous Flow anaerobic reactor 11 is risen to through the second pump 8 again together with the circulating sewage of circulation tank 7 li, keep this continuous flow sewage treatment system in running order, achieve and add Fe continuously in anaerobic reactor 3o 4nano particle.If directly add Fe 3o 4nano particle suspension liquid, then do not need dissolving tank 3 (dissolving tank is now called medicine storage pool), temperature is controlled by temperature controller 9, and pH is tested by pH tester 10.
The present invention is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, carries out according to the following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 34 ~ 36 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 6.8 ~ 7.2;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that solid adds or liquid adds, Fe 3o 4the particle size range of nano particle is 40 ~ 80nm;
When solid adds, by Fe 3o 4nano particle is added in the water of dissolving tank, adds 15.75g at every turn, Fe in the liquid of dissolving tank 3o 4the massfraction of nano particle is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
When liquid adds, by Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.02 ~ 0.04g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Beneficial effect of the present invention:
1, nano ferriferrous oxide granule can form electronic catheter between acid-producing bacteria and methanogen, establish a kind of directly plant between electron transmission, to make between syntrophism population electron transport rate apparently higher than passing through H 2transmit, effectively can improve anaerobic digestion methane phase usefulness, thus more renewable energy sources are provided.
2, the present invention utilizes nano ferriferrous oxide slowly, stably can discharge Fe 2+/ Fe 3+, since maintain Fe in anaerobic digester system 2+/ Fe 3+content, to meet the demand of anaerobic digestion methanogen to ferro element, and then ensure anaerobic digestion methane phase processing efficient and run fast.
Accompanying drawing explanation
Fig. 1 is continuous flow sewage treatment system schematic diagram.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, carries out according to the following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 34 ~ 36 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 6.8 ~ 7.2;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that solid adds or liquid adds, Fe 3o 4the particle size range of nano particle is 40 ~ 80nm;
When solid adds, by Fe 3o 4nano particle is added in the water of dissolving tank, adds 15.75g at every turn, Fe in the liquid of dissolving tank 3o 4the massfraction of nano particle is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
When liquid adds, by Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.02 ~ 0.04g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Verify by experiment and flow out with current and cause Fe 3o 4loss amount is 5%, determines Fe according to this loss amount 3o 4the dosage of nano particle.
Embodiment two: present embodiment and embodiment one unlike: the temperature controlling anaerobic reactor in step one is 35 DEG C.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one or two unlike: by adding NaHCO in step one 3the pH that solution controls anaerobic reactor is 7.Other is identical with embodiment one or two.
Embodiment four: one of present embodiment and embodiment one to three are unlike Fe in step 2 3o 4the particle size range of nano particle is 40 ~ 60nm.Other is identical with one of embodiment one to three.
Embodiment five: one of present embodiment and embodiment one to three are unlike Fe in step 2 3o 4the particle size range of nano particle is 60 ~ 80nm.Other is identical with one of embodiment one to three.
Embodiment six: one of present embodiment and embodiment one to five unlike: in step 3 anaerobic reactor mud in Fe 3o 4the concentration of nano particle is 0.02g/gVSS.Other is identical with one of embodiment one to five.
Embodiment seven: one of present embodiment and embodiment one to five unlike: in step 3 anaerobic reactor mud in Fe 3o 4the concentration of nano particle is 0.03g/gVSS.Other is identical with one of embodiment one to five.
Embodiment eight: one of present embodiment and embodiment one to five unlike: in step 3 anaerobic reactor mud in Fe 3o 4the concentration of nano particle is 0.04g/gVSS.Other is identical with one of embodiment one to five.
Embodiment 1: the present embodiment is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, specifically carries out according to following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 35 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 7;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that solid adds, Fe 3o 4the particle size range of nano particle is 40 ~ 60nm; By Fe 3o 4nano particle is added in the water of dissolving tank, adds 15.75g at every turn, Fe in the liquid of dissolving tank 3o 4the massfraction of nano particle is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.03g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Five, pass through statistics, according to system gas ultimate production and the detection number of times computing system average gas output of each detection, calculate average methane production according to each methane production detected and detection number of times, compare blank group and (do not add Fe 3o 4nano particle), gas yield on average improves 25.4%, and methane production on average improves 60.7%.
Embodiment 2: the present embodiment is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, specifically carries out according to following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 35 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 7;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that liquid adds, Fe 3o 4the particle size range of nano particle is 40 ~ 60nm; By Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.02g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Five, pass through statistics, according to system gas ultimate production and the detection number of times computing system average gas output of each detection, calculate average methane production according to each methane production detected and detection number of times, compare blank group and (do not add Fe 3o 4nano particle), gas yield on average improves 19.7%, and methane production on average improves 51.3%.
Embodiment 3: the present embodiment is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, specifically carries out according to following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 35 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 7;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that liquid adds, Fe 3o 4the particle size range of nano particle is 40 ~ 60nm; By Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.04g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Five, pass through statistics, according to system gas ultimate production and the detection number of times computing system average gas output of each detection, calculate average methane production according to each methane production detected and detection number of times, compare blank group and (do not add Fe 3o 4nano particle), gas yield on average improves 15.5%, and methane production on average improves 35.3%.
Embodiment 4: the present embodiment is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, specifically carries out according to following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 35 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 7;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that liquid adds, Fe 3o 4the particle size range of nano particle is 60 ~ 80nm; By Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.03g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Five, pass through statistics, according to system gas ultimate production and the detection number of times computing system average gas output of each detection, calculate average methane production according to each methane production detected and detection number of times, compare blank group and (do not add Fe 3o 4nano particle), gas yield on average improves 90.8%, and methane production on average improves 112.6%.
Embodiment 5: the present embodiment is by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, specifically carries out according to following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 35 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 7;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that liquid adds, Fe 3o 4the particle size range of nano particle is 60 ~ 80nm; By Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.04g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
Five, pass through statistics, according to system gas ultimate production and the detection number of times computing system average gas output of each detection, calculate average methane production according to each methane production detected and detection number of times, compare blank group and (do not add Fe 3o 4nano particle), gas yield on average improves 71.4%, and methane production on average improves 69.3%.

Claims (8)

1. by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that the method is carried out according to the following steps:
One, in distribution reservoir, waste water is housed, the flooding velocity controlling anaerobic reactor is 10L/d, and hydraulic detention time is 20h, outer circulation flow is 100L/d, and influent COD is 5000mg/L, and sludge concentration is 10g/L, the temperature controlling anaerobic reactor is 34 ~ 36 DEG C, by adding NaHCO 3the pH that solution controls anaerobic reactor is 6.8 ~ 7.2;
Two, modulating number of times every day is 2 times, and the method for modulation is for adding Fe 3o 4nano particle, dosing method is that solid adds or liquid adds, Fe 3o 4the particle size range of nano particle is 40 ~ 80nm;
When solid adds, by Fe 3o 4nano particle is added in the water of dissolving tank, adds 15.75g at every turn, Fe in the liquid of dissolving tank 3o 4the massfraction of nano particle is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
When liquid adds, by Fe 3o 4nano particle suspension liquid is added in dissolving tank, the Fe at every turn added 3o 4the massfraction of nano particle suspension liquid is 30%, and then in dissolving tank, liquid is promoted to solution pool through the first pump, and adding water in solution pool makes Fe in solution pool 3o 4the massfraction of nano particle is 15%;
Three, by controlling the flow of volume pump, Fe in the mud of anaerobic reactor is made 3o 4the concentration of nano particle is 0.02 ~ 0.04g/gVSS;
Four, every 2d, the detection of gas yield is carried out to Continuous Flow anaerobic reactor.
2. according to claim 1 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, and the temperature that it is characterized in that controlling in step one anaerobic reactor is 35 DEG C.
3. according to claim 1 and 2 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that in step one by adding NaHCO 3the pH that solution controls anaerobic reactor is 7.
4. according to claim 3 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that Fe in step 2 3o 4the particle size range of nano particle is 40 ~ 60nm.
5. according to claim 3 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that Fe in step 2 3o 4the particle size range of nano particle is 60 ~ 80nm.
6. according to claim 4 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that Fe in the mud of anaerobic reactor in step 3 3o 4the concentration of nano particle is 0.02g/gVSS.
7. according to claim 4 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that Fe in the mud of anaerobic reactor in step 3 3o 4the concentration of nano particle is 0.03g/gVSS.
8. according to claim 4 by adding Fe continuously 3o 4nano particle promotes the method for Continuous Flow anaerobic reactor methane phase efficiency, it is characterized in that Fe in the mud of anaerobic reactor in step 3 3o 4the concentration of nano particle is 0.04g/gVSS.
CN201510063923.6A 2015-02-06 2015-02-06 Method for increasing methane production efficiency of continuous-flow anaerobic reactor by continuously adding Fe3O4 nanoparticles Pending CN104556371A (en)

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CN108793402A (en) * 2018-07-16 2018-11-13 哈尔滨工业大学 A method of utilizing ferroferric oxide nano granules reinforced anaerobic reactor degradation phenol pollutant
CN109019852A (en) * 2018-07-26 2018-12-18 山东省科学院能源研究所 The method that anerobic sowage biological treatment is adversely affected for cutting down nano zine oxide
CN110759755A (en) * 2019-11-22 2020-02-07 天津大学 Quick composting method of biogas residues and application
CN112125345A (en) * 2020-08-04 2020-12-25 同济大学 Composite material Met @ Fe3O4And preparation method and application thereof
CN113388648A (en) * 2021-05-12 2021-09-14 同济大学 Method for producing medium-chain fatty acid and improving electron transfer efficiency between microbial species by promoting anaerobic fermentation of ferroferric oxide

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108793402A (en) * 2018-07-16 2018-11-13 哈尔滨工业大学 A method of utilizing ferroferric oxide nano granules reinforced anaerobic reactor degradation phenol pollutant
CN109019852A (en) * 2018-07-26 2018-12-18 山东省科学院能源研究所 The method that anerobic sowage biological treatment is adversely affected for cutting down nano zine oxide
CN109019852B (en) * 2018-07-26 2020-12-11 山东省科学院能源研究所 Method for reducing adverse effect of nano zinc oxide on anaerobic biological treatment of sewage
CN110759755A (en) * 2019-11-22 2020-02-07 天津大学 Quick composting method of biogas residues and application
CN112125345A (en) * 2020-08-04 2020-12-25 同济大学 Composite material Met @ Fe3O4And preparation method and application thereof
CN112125345B (en) * 2020-08-04 2022-02-18 同济大学 Composite material Met @ Fe3O4And preparation method and application thereof
CN113388648A (en) * 2021-05-12 2021-09-14 同济大学 Method for producing medium-chain fatty acid and improving electron transfer efficiency between microbial species by promoting anaerobic fermentation of ferroferric oxide

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