CN102242156B - Method and device for adsorbing organic matters in sewage by using porous ceramic to prepare methane - Google Patents

Method and device for adsorbing organic matters in sewage by using porous ceramic to prepare methane Download PDF

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Publication number
CN102242156B
CN102242156B CN2011102002582A CN201110200258A CN102242156B CN 102242156 B CN102242156 B CN 102242156B CN 2011102002582 A CN2011102002582 A CN 2011102002582A CN 201110200258 A CN201110200258 A CN 201110200258A CN 102242156 B CN102242156 B CN 102242156B
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tank body
basket
sewage
filler basket
porous ceramic
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CN102242156A (en
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王许涛
李刚
赵兴涛
周恒涛
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Henan University of Urban Construction
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Henan University of Urban Construction
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/20—Material Coatings
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/58—Reaction vessels connected in series or in parallel
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/02—Percolation
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/24—Recirculation of gas
    • 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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  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention belongs to the technical field of sewage treatment and new energy production, and in particular relates to a method for adsorbing organic matters in sewage by using porous ceramic to prepare methane. In the method, the organic matters in the sewage are adsorbed and enriched by the porous ceramic, and the porous ceramic enriched with the organic matters is subjected to anaerobic fermentation. The method is simple, and low in operating cost, the sewage can be subjected to purification treatment, the organic matters in the sewage are enriched and recycled, and a new way is provided for producing the methane, so that mutual benefits of sewage treatment and energy production are achieved.

Description

Utilize method and the device of organic Biogas in the porous ceramics absorption sewage
Technical field
The invention belongs to sewage disposal and technical field of new energy production, be specifically related to a kind of method and device that utilizes organic Biogas in the porous ceramics absorption sewage.
Background technology
Sanitary sewage is that current water pollutes the especially main source of urban water-body pollution, but because organic content is less in the sanitary sewage, its COD＜1000mg/l, belong to low-concentration organic waste water, be unwell to and be directly used in the anaerobically fermenting processing, adopt chemical precipitation and aerobic method combination to carry out to the processing of sanitary sewage at present, this method organic matter that not only processing cost is high but also sewage contains can't take full advantage of more.Porous ceramics is a kind of type material that fast development is got up, and not only intensity is large for it, acid and alkali-resistance, and its bigger serface is widely used in the material filtration with porosity characteristic, separates and the objectionable impurities removal.In recent years, cross development along with subject, porous ceramics has begun to use aspect sewage purification, as utilize porous ceramics to make the microfiltration membrane treatment of dyeing and printing and with the making biological reaction apparatus water quality is carried out purifying treatment, but this application form generally all is the porosity characteristic of utilizing porous ceramics as the filler of microorganism parasitism in order to form fast active sludge, this processing form has good treatment effect in the reaction unit initial start stage, but along with gathering procreation and the organic sedimentation of microorganism on porous ceramics, the porous ceramics space is progressively stopped up, its decontamination effect improving to water quality can progressively descend, and makes water treatment device lose due meaning.
Summary of the invention
The invention provides a kind of method and device of utilizing organic Biogas in the porous ceramics absorption sewage of realizing sewage disposal and biogas production doulbe-sides' victory.
The present invention is by the following technical solutions:
A kind of method of utilizing organic Biogas in the porous ceramics absorption sewage utilizes porous ceramics that the organic matter in the sewage is carried out adsorption and enrichment, and then the porous ceramics with enriched organic matter carries out anaerobically fermenting.
Utilize the method for organic Biogas in the porous ceramics absorption sewage, specifically may further comprise the steps: porous ceramics is placed reaction unit, sewage is passed through reaction unit from the bottom to top with the speed of 0.05-0.15L/min, stop logical sewage behind the 48-72h, the sewage of device volume 50-60% keeps responding in the reaction unit, add again anaerobic reaction liquid, the add-on of anaerobic reaction liquid is the 20-30% of reaction unit volume, then airtight porous ceramics to enriched organic matter carries out anaerobically fermenting, and the biogas that fermentation produces is collected.
Porous ceramics after the fermentation re-uses after air-dry, oven dry, washing.
A kind of device for the organic Biogas of porous ceramics absorption sewage, comprise tank body, tank body lower part is provided with water inlet pipe, water inlet pipe is connected with the water distributor of tank body inner bottom part, tank body top is provided with upflow tube, and the tank body top is provided with loam cake, on cover and be provided with escape pipe, be provided with in the tank body be used to the filler basket that holds porous ceramics, the basket end and the top cover of filler basket are equipped with perforate.
Described tank base is provided with support level, and the filler basket places on this support level, is provided with sealing-ring between filler basket upper edge and the inner tank wall; Cover on the described tank body and be provided with filling tube.
The porous ceramic layer of different-grain diameter is set in the filler basket, porous ceramic layer is reduced gradually by lower floor to upper strata particle diameter in the filler basket, bore size at the bottom of the filler basket basket is less than the particle diameter of lowest layer porous ceramic layer, and the bore size of filler basket top cover is less than the particle diameter of top layer porous ceramic layer.
A kind of system for the organic Biogas of porous ceramics absorption sewage, the reaction member that comprises a plurality of series connection, each reaction member comprises tank body, tank body lower part is provided with water inlet pipe, and water inlet pipe is connected with the water distributor of tank body inner bottom part, and tank body top is provided with upflow tube, the tank body top is provided with loam cake, on cover and be provided with escape pipe, be provided with in the tank body be used to the filler basket that holds porous ceramics, the basket end and the top cover of filler basket are equipped with perforate; During the reaction member series connection, the top of a upper reaction member tank body is provided with the discharge nozzle that is connected with the filling tube of next reaction member, and escape pipe, the water inlet pipe of each reaction member pool together respectively.
Described tank base is provided with support level, and the filler basket places on this support level, is provided with sealing-ring between filler basket upper edge and the inner tank wall; Cover on the described tank body and be provided with filling tube.
The porous ceramic layer of different-grain diameter is set in the filler basket, porous ceramic layer is reduced gradually by lower floor to upper strata particle diameter in the filler basket, bore size at the bottom of the filler basket basket is less than the particle diameter of lowest layer porous ceramic layer, and the bore size of filler basket top cover is less than the particle diameter of top layer porous ceramic layer.
Three porous ceramic layers are set in the filler basket, the particle diameter of orlop porous ceramic layer is 10mm, the particle diameter of middle layer porous ceramic layer is 6mm, the particle diameter of the superiors' porous ceramic layer is 3mm, the isolation orifice plate is set between the porous ceramic layer of different-grain diameter, the porous ceramics of different-grain diameter can be taken out respectively behind the anaerobically fermenting, reduced the sorting work amount of porous ceramics when repeatedly utilizing.
The present invention is in order to take full advantage of the sewage of lower concentration organic matter, adopted the mode of porous ceramics adsorption and enrichment, utilize first that the porous ceramics specific surface area is large, the organic matter in the characteristics of the high adsorption capacity absorption sewage, then be enriched with organic porous ceramics and carry out anaerobically fermenting, make the organic matter of enrichment on it produce the raw material of biogas as anaerobically fermenting, regeneration was carried out in again oven dry after porous ceramics after the fermentation was air-dry after the washing, and the biogas that obtains uses as clean energy.
Method technique of the present invention is simple, running cost is low, not only can realize the purifying treatment to sewage, also realized enrichment organic in the sewage is re-used, for the production of biogas provides new approach, realized thus the doulbe-sides' victory of sewage disposal and Energy production, be applicable to process the organic waste water of city domestic sewage and lower concentration, can be used as the preposition operation of municipal sewage treatment, reduce the processing cost of subsequent technique.
The apparatus structure of realizing the inventive method is simple, and cost is low, and disassembly, cleaning are convenient, and the loading level of porous ceramics is no more than and is 4/5 of tank body height in use, and when tank body was right cylinder, the height of tank body was four times of its diameter.A plurality of reaction members can also be together in series, realize the continuous processing to sewage, effect is more obvious.
Porous ceramics used among the present invention can directly be bought, also can prepare voluntarily, and can be that pore-forming material, red clay are that forming agent is fired at 1200 ℃ and formed by stalk, the mass ratio of stalk and red clay is 1:9.
Description of drawings
Fig. 1 is the device that the present invention is used for the organic Biogas of porous ceramics absorption sewage;
Fig. 2 is the system that the present invention is used for the organic Biogas of porous ceramics absorption sewage.
Embodiment
The device that is used for the organic Biogas of porous ceramics absorption sewage, as shown in Figure 1, comprise tank body 1, tank body 1 bottom is provided with water inlet pipe 3, and water inlet pipe 3 is connected with the water distributor 4 of tank body 1 inner bottom part, and tank body 1 top is provided with upflow tube 7, tank body 1 top is provided with loam cake 10, loam cake 10 is provided with escape pipe 8 and filling tube 9, is provided with in the tank body 1 be used to the filler basket 5 that holds porous ceramics, and the basket end and the top cover of filler basket 5 are equipped with perforate; Tank body 1 bottom is provided with support level 2, and filler basket 5 places on this support level 2, is provided with sealing-ring 11 between filler basket 5 upper edges and tank body 1 inwall, prevents that the sewage short circuit is directly by upflow tube 7 outflows; The filler basket 5 interior porous ceramic layers 6 that different-grain diameter is set, porous ceramic layer 6 is reduced gradually by lower floor to upper strata particle diameter in filler basket 5, bore size at the bottom of 5 baskets of the filler baskets is less than the particle diameter of lowest layer porous ceramic layer 6, prevent that porous ceramics from dropping outside the filler basket 5, the bore size of filler basket 5 top covers prevents that less than the particle diameter of top layer porous ceramic layer 6 porous ceramics is washed away.
A kind of method of utilizing organic Biogas in the porous ceramics absorption sewage, adopt the residential quarters effluent sewerage, COD is 1200mg/l, ss is 4.5%, sewage is passed through water inlet pipe 3, gas pipe 4 pumps in the cylindric tank body 1 of 12L, supplying water speed is 0.1L/min, unnecessary sewage is discharged by upflow tube 7, close water inlet pipe 3 and upflow tube 7 after passing into continuously sewage 48h, keep in the reaction unit 6L sewage being arranged, this moment, porous ceramic layer 6 adsorbed a large amount of organic matters, then added the natural pond liquid that takes out in the methane-generating pit of the normal operation of 2L by filling tube 9, sealed shell of tank 1 loam cake 10 carries out anaerobically fermenting in room temperature, the methanogen that contains in the liquid of natural pond is as the bacterial classification that carries out anaerobically fermenting, and by methanogenesis, the organic matter of enrichment can change into useful biogas on the porous ceramics, begin to have biogas to produce behind the anaerobically fermenting 18h, the biogas that produces is discharged and is collected by escape pipe 8, and gas production rate increases gradually, and the 48h gas production rate is maximum, the accumulative total aerogenesis time is 5d, and total gas production is 24L.Collect gas detection CH 4Concentration is 58%, CO 2Concentration is 41%, H 2Concentration is 0.3%.That porous after the anaerobically fermenting is made pottery is air-dry through porcelain, re-use after the oven dry, washing.
Four devices that are used for the organic Biogas of porous ceramics absorption sewage are together in series as reaction member and form as shown in Figure 2 system, during the reaction member series connection, the top of a upper reaction member tank body 1 is provided with the discharge nozzle 12 that is connected with the filling tube 9 of next reaction member, the escape pipe 8 of each reaction member pools together, and the water inlet pipe 3 of each reaction member compiles.First in the tank body 1 of last reaction member, pass into sewage by water inlet pipe 3, porous ceramics is closed water inlet pipe 3 and upflow tube 7 after adsorbing organic 48h, add anaerobic reaction liquid in the last reaction member and carry out anaerobically fermenting, the water inlet pipe 3 of next reaction member of while begins logical sewage makes porous ceramics begin to adsorb organic matter, after last reaction member anaerobic reaction finishes, close water inlet pipe 3 and the upflow tube 7 of next reaction member, reaction solution in the last reaction member is directly sent into next reaction member through discharge nozzle 12, continuation is carried out anaerobically fermenting as the anaerobic reaction liquid of next reaction member, so iterative cycles carries out recycle to anaerobic reaction liquid.

Claims (4)

1. a method of utilizing organic Biogas in the porous ceramics absorption sewage is characterized in that, utilize porous ceramics that the organic matter in the sewage is carried out adsorption and enrichment, then the porous ceramics with enriched organic matter carries out anaerobically fermenting; Specifically may further comprise the steps: porous ceramics is placed reaction unit, sewage is passed through reaction unit from the bottom to top with the speed of 0.05-0.15L/min, stop logical sewage behind the 48-72h, the sewage of device volume 50-60% keeps responding in the reaction unit, add again anaerobic reaction liquid, the add-on of anaerobic reaction liquid is the 20-30% of reaction unit volume, and then airtight porous ceramics to enriched organic matter carries out anaerobically fermenting, and the biogas that fermentation produces is collected; Described reaction unit comprises tank body, tank body lower part is provided with water inlet pipe, water inlet pipe is connected with the water distributor of tank body inner bottom part, tank body top is provided with upflow tube, the tank body top is provided with loam cake, on cover and be provided with escape pipe, be provided with in the tank body be used to the filler basket that holds porous ceramics, the basket end and the top cover of filler basket are equipped with perforate; Described tank base is provided with support level, and the filler basket places on this support level, is provided with sealing-ring between filler basket upper edge and the inner tank wall; Cover on the described tank body and be provided with filling tube; The porous ceramic layer of different-grain diameter is set in the filler basket, porous ceramic layer is reduced gradually by lower floor to upper strata particle diameter in the filler basket, bore size at the bottom of the filler basket basket is less than the particle diameter of lowest layer porous ceramic layer, and the bore size of filler basket top cover is less than the particle diameter of top layer porous ceramic layer.
2. the method for utilizing organic Biogas in the porous ceramics absorption sewage as claimed in claim 1 is characterized in that, the porous ceramics after the fermentation re-uses after air-dry, oven dry, washing.
3. one kind is used for the device that porous ceramics adsorbs the organic Biogas of sewage, it is characterized in that, comprise tank body, tank body lower part is provided with water inlet pipe, and water inlet pipe is connected with the water distributor of tank body inner bottom part, and tank body top is provided with upflow tube, the tank body top is provided with loam cake, on cover and be provided with escape pipe, be provided with in the tank body be used to the filler basket that holds porous ceramics, the basket end and the top cover of filler basket are equipped with perforate; Described tank base is provided with support level, and the filler basket places on this support level, is provided with sealing-ring between filler basket upper edge and the inner tank wall; Cover on the described tank body and be provided with filling tube; The porous ceramic layer of different-grain diameter is set in the filler basket, porous ceramic layer is reduced gradually by lower floor to upper strata particle diameter in the filler basket, bore size at the bottom of the filler basket basket is less than the particle diameter of lowest layer porous ceramic layer, and the bore size of filler basket top cover is less than the particle diameter of top layer porous ceramic layer.
4. one kind is used for the system that porous ceramics adsorbs the organic Biogas of sewage, it is characterized in that, the reaction member that comprises a plurality of series connection, each reaction member comprises tank body, tank body lower part is provided with water inlet pipe, water inlet pipe is connected with the water distributor of tank body inner bottom part, tank body top is provided with upflow tube, and the tank body top is provided with loam cake, on cover and be provided with escape pipe, be provided with in the tank body be used to the filler basket that holds porous ceramics, the basket end and the top cover of filler basket are equipped with perforate; During the reaction member series connection, the top of a upper reaction member tank body is provided with the discharge nozzle that is connected with the filling tube of next reaction member, and escape pipe, the water inlet pipe of each reaction member pool together respectively; Described tank base is provided with support level, and the filler basket places on this support level, is provided with sealing-ring between filler basket upper edge and the inner tank wall; Cover on the described tank body and be provided with filling tube; The porous ceramic layer of different-grain diameter is set in the filler basket, porous ceramic layer is reduced gradually by lower floor to upper strata particle diameter in the filler basket, bore size at the bottom of the filler basket basket is less than the particle diameter of lowest layer porous ceramic layer, and the bore size of filler basket top cover is less than the particle diameter of top layer porous ceramic layer.
CN2011102002582A 2011-07-18 2011-07-18 Method and device for adsorbing organic matters in sewage by using porous ceramic to prepare methane Expired - Fee Related CN102242156B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002320986A (en) * 2001-04-26 2002-11-05 Inax Corp Processing method for biological system waste liquid
TW200848142A (en) * 2006-10-12 2008-12-16 Hyflux Ltd Separation unit
CN101428927A (en) * 2008-08-04 2009-05-13 上海环境工程技术有限公司 Combined process for treatment and qualified discharge of garbage leachate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002320986A (en) * 2001-04-26 2002-11-05 Inax Corp Processing method for biological system waste liquid
TW200848142A (en) * 2006-10-12 2008-12-16 Hyflux Ltd Separation unit
CN101428927A (en) * 2008-08-04 2009-05-13 上海环境工程技术有限公司 Combined process for treatment and qualified discharge of garbage leachate

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