CN1746115A - Microbial filler and production thereof - Google Patents
Microbial filler and production thereof Download PDFInfo
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- CN1746115A CN1746115A CNA2004100503971A CN200410050397A CN1746115A CN 1746115 A CN1746115 A CN 1746115A CN A2004100503971 A CNA2004100503971 A CN A2004100503971A CN 200410050397 A CN200410050397 A CN 200410050397A CN 1746115 A CN1746115 A CN 1746115A
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- carrier
- filler
- linking agent
- microbial film
- microbial
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Fixed microbial filler and its production are disclosed. The process is carried out by taking animals, plant, carbon, textile and particle or fiber of engineering plastic as skeleton of filler, immersing bacterial liquid from cultured active sludge, washing, curing, sizing and obtaining fixed microbial filler with purified microbial membrane. The filler is particle or fibrous mixture and consists of peat, active carbon, mixture of various plants stems or leaves, hollow plastics and mixture of above various substances.
Description
Technical field
The present invention relates to a kind of microbe stuffing and preparation method thereof, particularly immobilized microorganism filler body and preparation method thereof.
Background technology
Various trade effluents and sanitary sewage disposal facility (hereinafter to be referred as water processing establishment), in process of production, often produce some hazardous and noxious substances, repugnant substance particularly, as: sulfide (hydrogen sulfide, low molecule mercaptan, thioether, methyl disulfide etc.), volatile organic compounds (benzene series thing, phenolic compound etc.), ammonia, low molecule organic amine etc.These hazardous and noxious substances are discharged (hereinafter to be referred as waste gas) along with the exhaust of water processing establishment, polluted the neighboring area, produce such as environmental pollutions such as stenches.
As everyone knows, adopt microbially decontaminate technology (as CN 97121666), can effectively purify multiple toxic harmful exhaust gas, eliminate gas contamination such as stench, have removal efficiency height, advantage that running cost is low.Microbe stuffing is the of paramount importance integral part in the microbially decontaminate technology, uses suitable microbe stuffing, can keep comparatively stable microbially decontaminate efficient at the microbial reaction environment of purification process maintenance microbe stuffing in service.
Existing microbially decontaminate waste gas technology adopts following process form usually: filling fiber filler in purification reactor (as the peat among the CN 97121666), annular packing (as the stainless steel ring among the CN97211331) or granular filler (as the potter's clay particle among " China Environmental Science "-1999-19 (1)-59), then with containing liquid drip washing that purifies microorganism or the method for soaking filler, at filling surface carry microbial film, again by intermittence or the drip washing of successive nutritive medium, maintain the growth of filling surface microbial film, thereby guarantee the normal operation of microbially decontaminate technology.
This method has filler and loads simple, microbial film carry convenience, but shortcoming also is conspicuous.Adopt the filler of pure peat, because the framed intensity of peat own is very low, along with the prolongation of working time of microorganism device, this packing volume can reduce gradually, and density increases, so that can cause the pressure of device to fall increase a lot, in the microorganism tower, air-flow can form bias current, and purification efficiency is descended.Adopt potter's clay, annular packing or other particulate filler, then exist microbial film to come off easily, remove the not high problem of efficient.JP63277467, JP810560 etc. disclose a kind of microbial deodorization device, and its principal character is to have used a kind ofly to be microorganism carrier with peat, loess or the particulate matter that contains peat loess.This method can not solve the problem that filler easily stops up, pressure drop increases when long-term operation.JP494733 discloses a kind of clean peat filler moulding technology, adds one or more organic or inorganic additives in peat, has solved the problem that filler easily stops up, pressure drop is big preferably.But adopt the mode of filler elder generation moulding rear mount microorganism, the carry intensity of microbial film on microbe stuffing is low, is easy to come off microbial growth environment instability, poor impact resistance.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of microbially decontaminate activity stabilized, guarantee the steadily normal operation of purification process, prolong microbially decontaminate device running period, microbe stuffing that shock-resistance is strong and preparation method thereof.
Microbe stuffing of the present invention is a carrier with particle or fiber object, and carrier surface solidifies microbial film, contains linking agent in the microbe stuffing, and linking agent is solidificated in microbial film on the carrier.One or more the mixture that is used for residual body, peat, gac, yarn fabric, animal hair, the engineering plastics of the particle of carrier and/or stem that the fiber object comprises plant, leaf, root.Microbial film comes from through domestication, cultivates the bacterium liquid that the back obtains.The bacterium liquid that is used for microbe stuffing comes from active sludge, contaminated area soil, the waste water of wastewater biochemical treatment plant or the bacterial classification after the process domestication on every side usually.The amount of microbial film is 1 * 10
5～3 * 10
9Strain/g filler stem.Linking agent comprises in chitosan, polyvinyl compound (as polyvinyl alcohol, urethane, Vinyl Acetate Copolymer etc.), alginates, the gelatin, in calcium hydroxide, calcium oxide etc. one or more.Dosage of crosslinking agent is 0.02～0.5g/g filler stem, is preferably 0.05～0.3g/g filler stem.
Microbe stuffing preparation process of the present invention comprises the steps:
(1) selects particle or fiber object carrier as microbe stuffing;
(2) flood above-mentioned carrier with microbial inoculum, spray with nutritive medium then;
(3) the carry microorganism carrier that step (2) is obtained with linking agent carries out microbial film curing;
(4) carrier of the curing microbial film that step (3) is obtained is fixed to microbe stuffing.
The present invention has adopted means such as dipping, drip washing and solidifying and setting, make microbial film be attached on the carrier and strengthened and solidify, thereby strengthened the carry intensity of microbe stuffing internal microorganism film, it can not come off, stablized the microbial growth environment, shock-resistance strengthens.Filler is through after finalizing the design in addition, and the framed intensity of filler strengthens, and packing volume can not occur and alter a great deal, and makes gas the phenomenon of bias current occur.By the present invention, make the purification activity of microbe stuffing keep the stable of long term, guarantee that the normal continuously of waste-gas cleaning technology moves, and improves purification efficiency.
Embodiment
Microbe stuffing preparation method's of the present invention particular content is as follows:
Particle that relates in the step (1) or fibrous object can be one or more the mixtures in the residual body, peat, gac, yarn fabric, animal hair, engineering plastics of stem, leaf, the root of plant, the mixture of one or more of the residual body of the stem of preferred peat and plant, leaf, root, gac.The water ratio of wherein said peat is 30%～90%, and optimum is 55%～70%, the length average out to 1mm～50mm of peat fibre, and preferred 15mm～40mm, tamped density is 150kg/m
3～400kg/m
3, optimum is 220kg/m
3～280kg/m
3Gac is column or indefinite form particle, and the column diameter is 2mm～7mm, and optimum is 3mm～4.5mm.When peat and other material mixing were used, the volume content of peat was generally 40%～90%, is preferably 55%～75%.
The process of step (2) microbial inoculum impregnated carrier is: carrier is immersed in the middle of the bacterium liquid fully, makes to purify microorganism growth and be attached on the carrier.Bacterium liquid comes from active sludge usually, active sludge generally need use nutritive medium to carry out aerobic or the anaerobism mode was cultivated 1～7 day, nutritive medium can use the common nutritive medium in this area to form, as with containing 0.1～0.5w% extractum carnis, 0.1～0.5w% peptone, 0.2～0.8w%NaCl, 0.01～0.1w%Na
2S
2O
3And 0.02～0.1M phosphoric acid etc.Culture condition adopt this area ordinary method and and condition, as about 20～30 ℃ of pH 7.0～7.2, temperature, blowing air or stirring are carried out in aerobic cultivation.Bacterium liquid also can be from bacterial screening or microbial culture medium that other method obtained.With nutritive liq the carrier through bacterium liquid dipping is carried out lasting or be interrupted drip washing in 1～3 day then, the microbial film on enhancement vector surface, and remove unnecessary microbial biomass.
The microbial film solidification process that step (3) relates to is: adopt linking agent, carrier surface is carried out crosslinking curing through the microbial film after the drip washing.Linking agent can be one or more in chitosan, polyvinyl compound (as polyvinyl alcohol, urethane, Vinyl Acetate Copolymer etc.), alginates, the gelatin, also can be inorganics such as calcium hydroxide, calcium oxide etc.During use, linking agent and carrier are mixed, stir, add 1～5 times water of carrier bulk, preferred 2～3 times, stir a little again, carrier and linking agent are mixed.Or directly soak the filler of carry microorganism with cross-linking agent aqueous solution.The solidification treatment temperature is 30～90 ℃, is preferably 40～60 ℃, in 20～120 hours treatment times, is preferably 48～72 hours.Then unnecessary water drop is gone out, make the water ratio of filler reach 40w%～95w%.
The filler type-approval process that step (4) relates to is: will be processed into needed shape with the method for mixing, push through microbial film solidified carrier, as sphere, cylindricality, annular, saddle type, plate shape and other different shape.Be to handle 12～240 hours under 30 ℃～80 ℃ conditions in temperature then, be preferably in 40 ℃～70 ℃ and handled 24～96 hours down.
The microbe stuffing that the inventive method obtains goes for the waste gas microbially decontaminate, and particularly suitable concentration is less than 1000mg/m
3The purification of various waste gas such as the purification of water processing establishment discharging waste gas.Further specify the process and the effect of the inventive method below by embodiment.
Embodiment 1
Biochemical aerated reaction pond, sewage-farm often gives off waste gas such as containing hydrogen sulfide, benzene, volatilization hydrocarbon.Adopt microbially decontaminate technology, can carry out purifying treatment exhaust gas discharged.
Filling employing peat fibre is the microbe stuffing of carrier in the microbially decontaminate process unit, and the preparation method of microbe stuffing is as follows:
To take from the active sludge in biochemical aerated reaction pond, sewage-farm, with containing 0.4w% extractum carnis, 0.3w% peptone, 0.2w%NaCl, 0.1w%Na
2S
2O
3And the substratum of 0.1M phosphoric acid buffer is pH7.0,25 ℃ of following aerations 4 days, the mud of centrifugation remnants, acquisition be rich in the bacterium liquid that purifies microorganism, with this bacterium liquid with the peat fibre thorough impregnation, interpolation 0.4w% yeast extract paste, 2w%NH
4Cl, 0.1w%Na
2S
2O
3And the Fe of 0.001mol
+And Mg
+, composition such as 0.01w% VITAMIN, regulation and control pH is 7.0, cultivated 6 days with aerobic mode (stirring operation) down at 25 ℃, purification microorganism in the bacterium liquid can fully be grown and be attached on the peat fibre, again peat fibre is taken out, with containing 0.4w% extractum carnis, 0.3w% peptone and Na
+, K
+The nutritive liq of 0.1M phosphoric acid buffer above-mentioned peat fibre is carried out carrying out cycling elution every 4h, drip washing intensity is that every cubic metre of filler is per hour used 0.03 cubic metre of nutritive medium.Regulating and control pH simultaneously is 7.0, continues to carry out 3 days, and the microbial film that is attached to the peat fibre surface is strengthened, and unnecessary microbial biomass is discharged with leacheate.Use Vinyl Acetate Copolymer solution soaking peat fibre (dosage of crosslinking agent is the 0.2g/g filler stem) then, its surface is carried out the crosslinking curing of 72h under 30 ℃ through the microbial film after the drip washing, at last, with the peat fibre draining after solidifying, after making its water ratio reach 85w%, be squeezed into column type filler body, got final product in thermally-stabilised 4 days down with 40 ℃ again.
The immobilized microorganism carrier performance parameter that said process is prepared is as shown in the table:
Table 1 peat fibre microbe stuffing body rerum natura
| Intensity | Specific surface area | Microbial biomass | Porosity | Packing density (doing) |
| 2.5kg/cm 2 | 12000m 2/m 3 | 2.5×10 9Individual/the g filler stem | 42v％ | 291g/L |
Embodiment 2
Adopt the microbially decontaminate art breading to contain hydrogen sulfide, the malodorous waste gas of organic sulfide.The filling activated carbon granule is the microbe stuffing of carrier in the refining plant.The preparation method of microbe stuffing is as follows:
To take from the active sludge of sewage treatment facility, with containing 0.4w% extractum carnis, 0.2w% (NH
4)
2SO
4, 0.2w%NaCl, and the substratum of 0.1M phosphoric acid buffer cultivated 4 days at 7.0,25 ℃ of following aerations of pH, the bacterium liquid that is rich in the purification microorganism that obtains after the centrifugation,, continue with above-mentioned substratum and add the Fe of 0.001mol the activated carbon granule thorough impregnation with this bacterium liquid
+, Mg
+With composition such as 0.01w% VITAMIN, regulation and control pH is 7.0,20～30 ℃ down aerobic cultivations again activated carbon granule is taken out, with containing 0.4w% extractum carnis, 0.01w%Na after 6 days
2S
2O
3And Na
+, K
+The nutritive liq of 0.1M phosphoric acid buffer above-mentioned activated carbon granule is carried out 4h cycling elution at interval, regulating and control pH simultaneously is 7.0～7.5, continued to carry out 3 days, soak activated carbon granule (crosslinked consumption is the 0.3g/g filler stem) with sodium alginate soln then, under 80 ℃, microbial film is carried out the crosslinking curing of 48h, stablize at 70 ℃ and got final product in 2 days.
The immobilized microorganism carrier performance parameter of preparing is as shown in the table:
Table 2 activated carbon fiber microbe stuffing body rerum natura
| Intensity | Specific surface area | Microbial biomass | Porosity | Packing density (doing) |
| 2.3kg/cm 2 | 14000m 2/m 3 | 1.3×10 6Individual/the g filler stem | 41v％ | 270g/L |
Embodiment 3
According to embodiment 1 described preparation process, it is 3: 1 mixed carrier material that wherein peat is changed to peat and gac volume ratio.Microbial inoculum floods, nutritive medium spray process is identical with embodiment.Linking agent uses the mixture of chitosan and calcium hydroxide (weight ratio 2: 1), every gram filler stem adds linking agent 0.05 gram, mix, the water that adds 2 times of carrier volumes mixes, under 50 ℃, microbial film is carried out the crosslinking curing of 30h, drop goes out superfluous water, stablizes at 70 ℃ after the moulding to get final product in 2 days.
The immobilized microorganism carrier performance parameter that said process is prepared is as shown in the table:
Table 3 peat fibre microbe stuffing body rerum natura
| Intensity | Specific surface area | Microbial biomass | Porosity | Packing density (doing) |
| 2.4kg/cm 2 | 13000m 2/m 3 | 8.0×10 7Individual/the g filler stem | 43v％ | 285g/L |
Application examples 1
Is the emission-control equipment of principal pollutant with the applying filler among the embodiment 1 in sulfocompound, benzene series thing, the concentration of hydrogen sulfide is 0～20 μ L/L in the sulfocompound, the concentration of organosulfur is 5～30 μ L/L, the concentration of benzene series thing is 5～30 μ L/L, the water ratio of filler is 80%～85%, normal temperature, volume space velocity 300h
-1The clearance of sulfocompound, benzene series thing can reach 93% after one week.
Application examples 2
In being the emission-control equipment of principal pollutant with hydrogen sulfide, the concentration of hydrogen sulfide is 10～60 μ L/L with the applying filler among the embodiment 2, is under 80% the situation keeping filler humidity, normal temperature, volume space velocity 300h
-1, the clearance of hydrogen sulfide reaches 85% behind 24h, and clearance reaches 100% behind the 36h.More than steady running January.
Comparative example 1
To not carry out the moulding filler of carrier impregnation step, being applied to hydrogen sulfide is the emission-control equipment of principal pollutant, and the concentration of hydrogen sulfide is 10～60 μ L/L, and keeping filler humidity is 80%, normal temperature, volume space velocity 300h
-1, the clearance of hydrogen sulfide reaches 85% behind 240h, and clearance reaches 100% behind the 432h.More than steady running January.
Can find out in application examples 2 and the comparative example 1, carry out carrier impregnation after, had the bacterium colony of degraded hydrogen sulfide in the carrier, during the device operation, the domestication time of filler is very short, and the filler domestication time of microorganism colonization is not in the application examples 1 12 times in the comparative example.
Application examples 3 and comparative example 2 (shock-resistance test)
Application examples 3
In the emission-control equipment with the hydrogen sulfide principal pollutant, the mean concns of hydrogen sulfide is 71.2 μ L/L with the applying filler among the embodiment 1, and the water ratio of filler is that the clearance of 60%, one all postcure hydrogen is stabilized in 100%.Concentration is increased to 181.5 μ L/L, normal temperature, volume space velocity 300h suddenly
-1, clearance is reduced to 98%, and after 2 days, clearance returns to 100% again.Concentration is increased to 322.1 μ L/L, and clearance only is reduced to 90.3%.
Comparative example 2
The peat that will not have the carry microorganism is as bio-carrier, and the mean concns that is applied to hydrogen sulfide is on the treatment unit of 50 μ L/L.After charcoal absorption is saturated, begin domestication, after five weeks, the hydrogen sulfide removal rate is 98%, normal temperature, volume space velocity 300h
-1Concentration is increased to 150 μ L/L, and clearance then is reduced to 85%.Concentration is increased to 250 μ L/L, and then clearance drops to 71%.
Can find out that from application examples 3 and comparative example 2 filler of carry microorganism exceeds more than one times than the anti-load impact ability of filler of carry microorganism not.
Claims (12)
1, a kind of microbe stuffing is a carrier with particle or fiber object, it is characterized in that carrier surface solidifies microbial film, contains linking agent in the microbe stuffing, and linking agent is solidificated in microbial film on the carrier, and dosage of crosslinking agent is 0.02～0.5g/g filler stem.
2, according to the described microbe stuffing of claim 1, it is characterized in that described solid support material is particle and/or fiber object, microbial film comes from through domestication, cultivates the bacterium liquid that the back obtains, the amount 1 * 10 of microbial film
5～3 * 10
9Strain/g filler stem.
3,, it is characterized in that described carrier is selected from one or more the mixture in the residual body of the stem of plant, leaf, root, peat, gac, yarn fabric, animal hair, the engineering plastics according to claim 1 or 2 described microbe stuffings.
4, according to the described microbe stuffing of claim 1, it is characterized in that described linking agent is selected from chitosan, polyvinyl compound, alginates, the gelatin, in the calcium hydroxide, calcium oxide one or more, dosage of crosslinking agent is 0.05～0.3g/g filler stem.
5, the preparation method of the described microbe stuffing of a kind of claim 1 comprises the steps:
(1) selects particle or fiber object carrier as microbe stuffing;
(2) flood above-mentioned carrier with microbial inoculum, spray with nutritive medium then;
(3) the carry microorganism carrier that step (2) is obtained with linking agent carries out microbial film curing;
(4) carrier of the curing microbial film that step (3) is obtained is fixed to microbe stuffing.
6, in accordance with the method for claim 5, it is characterized in that one or more mixture in the residual body, peat, gac, yarn fabric, animal hair, engineering plastics of stem that particle described in the step (1) or fibrous object be selected from plant, leaf, root.
7, in accordance with the method for claim 5, it is characterized in that the process of the described microbial inoculum impregnated carrier of step (2) is: carrier is immersed in the middle of the bacterium liquid fully, makes to purify microorganism growth and be attached on the carrier; Bacterium liquid comes from active sludge, and active sludge generally need use nutritive medium to carry out aerobic or the anaerobism mode was cultivated 1～7 day; Described nutritive medium spray process is: the carrier through bacterium liquid dipping is carried out lasting or be interrupted drip washing in 1～3 day, and the microbial film on enhancement vector surface, and remove unnecessary microbial biomass.
8, in accordance with the method for claim 5, it is characterized in that the described microbial film solidification process of step (3) is: adopt linking agent, carrier surface is carried out crosslinking curing through the microbial film after the drip washing, then unnecessary water drop is gone out; Consumption 0.02～0.5g/g filler stem of linking agent, linking agent is selected from one or more in chitosan, polyvinyl compound, alginates, gelatin, calcium hydroxide, the calcium oxide.
9, in accordance with the method for claim 8, it is characterized in that linking agent adding method is in the described crosslinking curing process: adopt linking agent and carrier are mixed, stir, add 1～5 times water of carrier bulk, mix; Or directly soak the filler of carry microorganism with cross-linking agent aqueous solution.
10, in accordance with the method for claim 8, it is characterized in that described crosslinking curing is to keep 20～120 hours under 30～90 ℃ of conditions in temperature.
11, in accordance with the method for claim 5, it is characterized in that the described filler type-approval process of step (4) is: will be processed into needed shape with the method for mixing, push through microbial film solidified carrier, be to handle 12～240 hours under 30 ℃～80 ℃ conditions in temperature then.
12, in accordance with the method for claim 11, it is characterized in that the treatment condition after the described moulding are processing under 40 ℃～70 ℃ 24～96 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100503971A CN100340498C (en) | 2004-09-11 | 2004-09-11 | Microbial filler and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100503971A CN100340498C (en) | 2004-09-11 | 2004-09-11 | Microbial filler and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1746115A true CN1746115A (en) | 2006-03-15 |
| CN100340498C CN100340498C (en) | 2007-10-03 |
Family
ID=36165861
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|---|---|---|---|
| CNB2004100503971A Active CN100340498C (en) | 2004-09-11 | 2004-09-11 | Microbial filler and production thereof |
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|---|---|
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|---|---|---|---|---|
| CN102030418A (en) * | 2010-11-05 | 2011-04-27 | 福建师范大学 | Method for preparing carbon-based synthetic modified sewage purifier |
| CN102249396A (en) * | 2010-05-18 | 2011-11-23 | 中国水利水电科学研究院 | Biologically slow filtering filler and manufacturing method thereof |
| CN104556407A (en) * | 2014-12-31 | 2015-04-29 | 深圳市鸿鹄科技发展有限公司 | Method for treating wastewater by immobilizing microorganisms to sisal hemp silk |
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| CN102249396B (en) * | 2010-05-18 | 2013-03-13 | 中国水利水电科学研究院 | Biologically slow filtering filler and manufacturing method thereof |
| CN102030418A (en) * | 2010-11-05 | 2011-04-27 | 福建师范大学 | Method for preparing carbon-based synthetic modified sewage purifier |
| CN104788862B (en) * | 2014-01-17 | 2017-06-06 | 曲阜天博晶碳科技有限公司 | A kind of preparation method of hydrophilic porous pressed active carbon |
| CN105084537B (en) * | 2014-12-19 | 2017-11-03 | 上海林一环保设备有限公司 | The preparation method of a a variety of biological zymophores |
| CN105084537A (en) * | 2014-12-19 | 2015-11-25 | 上海林一环保设备有限公司 | Preparation method of carrier for multiple bio-enzymes |
| CN104556407A (en) * | 2014-12-31 | 2015-04-29 | 深圳市鸿鹄科技发展有限公司 | Method for treating wastewater by immobilizing microorganisms to sisal hemp silk |
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| CN111253121A (en) * | 2019-12-31 | 2020-06-09 | 江苏宜裕环保科技有限公司 | Baking-free bioactive filler with ammonia removal and denitrification functions and preparation method thereof |
| CN111498987A (en) * | 2020-04-16 | 2020-08-07 | 南开大学 | Domestic sewage in-situ purification immobilized carrier and microbial inoculum loading method |
| CN113417295A (en) * | 2021-06-07 | 2021-09-21 | 海南大学 | Foundation pit microorganism soil gravity type enclosure structure and construction method thereof |
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