CN102050516A - Method for preparing selective microbial packing - Google Patents
Method for preparing selective microbial packing Download PDFInfo
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- CN102050516A CN102050516A CN2009101880987A CN200910188098A CN102050516A CN 102050516 A CN102050516 A CN 102050516A CN 2009101880987 A CN2009101880987 A CN 2009101880987A CN 200910188098 A CN200910188098 A CN 200910188098A CN 102050516 A CN102050516 A CN 102050516A
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- packing material
- biologic packing
- desulfurization
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a method for preparing selective microbial packing. A plant organic fiber or a mixture of the plant organic fiber and activated carbon is used as basic packing, and the method comprises the following steps of: screening, separating and purifying activated sludge to obtain specific desulfurization bacteria; massively propagating and culturing the bacteria in nutrient solution to prepare desulfurization bacterium mother solution; and performing nutrient solution soaking, spraying and mother solution biofilm formation on the basic packing to prepare the selective microbial packing. The biological packing is used for microbial purification in waste gas treatment, and is particularly used for removing stinky pollutants produced in petrochemical plants, sewage treatment plants, urban sewage treatment plants, animal husbandry farms and the like. By the method, class I pollutants in exhaust gases of a refinery are treated specially, the treatment load and efficiency of the pollutants are improved, and impact resistance during change of working conditions is improved.
Description
Technical field
The present invention relates to a kind of microbe stuffing and preparation method thereof, especially for odor pollution material selectivity organism deodorizing microbe stuffing and preparation method thereof of generations such as petro-chemical waste water treatment factory, municipal sewage plant, livestock-raising field.The invention belongs to the waste gas pollution control and treatment field.
Background technology
In petrochemical production process, often discharge the pollution substance of some toxic effects, as: volatile organic compounds, sulfide, amine substance or the like.Wherein Pai Fang sulfide is the principal pollutant that cause production plant area and the odor pollution of peripheral living quarters, also is the subject matter that environmental improvement will solve.
Along with the development of the biological desulfurizing technology eighties, this technology because of having advantage such as desulfuration efficiency height, running cost are low, non-secondary pollution by wide popularization and application.In the biological desulfurization process process, suitable microbe stuffing is being kept micro-ecological environment, guarantees that the stable purification efficiency to pollutent plays crucial effects.
Prior biological purifies reaction process, after in reactor, filling filler, the active sludge that common employing contains mixed strains sprays or soaks, to reach the purpose of biofilm, keep by spraying nutrient solution again that mixing microorganisms finally reaches the steady running of waste gas in biological purifying process in the breeding and the growth of filling surface after the biofilm.
It is simple that this method has the filling surface biofilm, and the microbe colony after the biofilm is tamed characteristics easily, but also have the shortcoming that is difficult to overcome in operational process.When waste gas composition etc. changes, as in one period working time, the composition of hydro carbons waste gas continues to increase, not only can suppress growth, the breeding of desulfurization bacterium in the filling surface microbial film, also can increase the speed of growth of taking off the hydrocarbon bacterium, cause complete assembly to enter new acclimation period, reduce the processing efficiency of sulfur removal technology, or make desulfurization bacterium generation intoxicating phenomenon, even can the paralysis of initiating device short period of time.
Summary of the invention
At the deficiencies in the prior art, the object of the present invention is to provide a kind of microbe stuffing and preparation method thereof selectively, handle the pollutant matter in refinery's discharging gas targetedly, improve the processing load and the efficient of this pollutant matter, the impact resistance when strengthening working conditions change.Biologic packing material of the present invention is based on mixtures such as vegetable fibre or vegetable fibre and gacs.Microbial film comes from through the obligate desulfurization flora liquid after screening, domestication and the purifying cultivation.The mixing micro-ecological environment that is used for screening and separating obligate desulfurization bacterium is mainly the soil of the active sludge of wastewater treatment field, contaminated area periphery etc.
The preparation process of selected microorganism filler of the present invention comprises the steps:
(1) select the mixture of vegetable fibre or vegetable fibre and gac as basic biologic packing material;
(2) screening and separating goes out obligate desulfurization flora in active sludge, and a large amount of breeding cultivations in nutritive medium behind the purifying are with preparation desulfurization bacterium mother liquor;
(3), obtain the micro-ecological environment of suitable desulfurization bacterium growth with nutritive medium infuse and the basic biologic packing material of regular spray;
(4) desulphurization mother solution with step (2) preparation sprays on the basic biologic packing material of infuse overnutrition liquid, obtains the biologic packing material of selectively removing sulfide.
Compared with prior art, the inventive method has following characteristics:
After the present invention's screening and separating from active sludge goes out obligate desulfurization flora, under the condition of abundant aeration, desulfurization bacterium is tamed and purifying, obtain the desulfurization bacterial classification of purifying.With nutritive medium infuse and the basic biologic packing material of regular spray, further stablized desulfurization microbial growth environment, further strengthened the impact resistance of desulfurization bacterial classification simultaneously, the sweetening effectiveness when guaranteeing fluctuation of operating conditions.By spray with the desulfurization flora attached on the basic biologic packing material, obtained having the biologic packing material that selectivity is handled sulphur-containing exhaust gas.The biologic packing material of the inventive method preparation, adopt the good obligate desulfurization bacterium mother liquor of domestication, but not common active sludge, in the biofilm process, select the obligate desulfurization flora behind screening, separation and the purifying for use, mixed bacteria liquid colonization method with respect to conventional fillers, the desulfurization biomass of unit filler increases greatly, and significantly reduce acclimation period, have very high selectivity and handle the effect and the impact resistance of sulphur-containing exhaust gas, can be in the short period after sulfurous gas concentration and air speed fluctuate recovery it is desulphurizing activated.And the inventive method can also reduce the domestication time in the device operational process, improves the purification efficiency of sulfide.
Embodiment
The preparation method of selectivity organism filler of the present invention specifically comprises the steps:
(1) select the mixture of the low vegetable fibre of charing degree or vegetable fibre and gac as basic biologic packing material in the rich soil;
(2) screening and separating goes out obligate desulfurization flora in the active sludge of plant area's wastewater treatment field, breeds in a large number in nutritive medium behind the purifying and cultivates with preparation desulfurization bacterium mother liquor;
(3), obtain the micro-ecological environment of suitable desulfurization bacterium growth with nutritive medium infuse and the basic biologic packing material of regular spray;
(4) desulphurization mother solution is sprayed on the basic biologic packing material of infuse overnutrition liquid, obtain the biologic packing material of selectively removing sulfide.
Plant organic fibre described in the step (1) is selected from peat or brown coal.Wherein the water ratio of peat is 40%～85%, and peat fibre length is 15mm～40mm.If basic biologic packing material is selected the mixture of peat and gac, the volume fraction of peat is not less than 50%.
The sepn process of the described obligate desulfurization of step (2) flora is, gets the active sludge in the certain volume treatment sewage field, places 32 ℃ of bottle swingging machine (180rmin
-1) middle concussion cultivation is after 48～72 hours, selection MLSS has reached 1000mgL
-1Above nutrient solution places selective medium (Na as next step strain liquid
2S
2O
35H
2O 10.0g, KH
2PO
44.0g, K
2HPO
44.0g, MgSO
47H
2O 0.8g, NH
4Cl0.4g, distilled water 1000mL), transfer pH to 7.0～7.6 with NaOH, in enrichment medium, add 0.3% nutrient agar medium).Draw above-mentioned certain volume nutrient solution in the Leathen nutrient solution, inoculate, add a certain amount of nutritive medium (trace element solution prescription: EDTA disodium salt 50g, ZnSO every day by 10% inoculum size
47H
2O 22.0g, CaCl
25.54g, MnCl
24H
2O 5.06g, FeSO
47H
2O 4.99g, (NH
4)
6Mo
7O
244H
2O 1.10g, CuSO
45H
2O 1.57g, CoCl
26H
2O 1.61g, distilled water 1000mL) and Na
2S tames microorganism under the condition of abundant aeration.Isolated bacterial classification is transferred in the new substratum, and 7～8 times, each inoculum size reduces gradually, and along with continuous transplanting, assorted bacterium constantly is eliminated, and obtains the desulfurization bacterial classification of purifying.Improve the S of substratum in the mode that increases progressively day by day
2-Content is tamed the purifying desulfurization bacterium, observes desulfurization degree in the time of domestication, when desulfurization degree was kept more than 95% in continuous 5～6 days, tames and finishes, and preserves the desulfurization bacterial classification.
Desulfurization bacterial classification after the separation and purification is inserted in the liquid nutrient medium, in 32 ℃ of bottle swingging machine (180rmin
-1) in concussion cultivate after 48 hours, make the desulfurization bacterium mother liquor.
The preparation process of the described nutritive medium of step (3): the sodium phosphate class of preparation 0.1w%～5.0w% and 0.1w%～3.0w% potassiumphosphate class inorganic salt, 0.1w%～2.0w% Sulfothiorine and NO
3 -, Mg
2+In nutritive salt.Soak basic biologic packing material with the nutritive medium for preparing, make the microbial film of filling surface obtain the suitable nutritive substance of breeding and growing.Regularly spraying nutrient solution on the basic filler that soaked keeps its humidity in 30%～80% scope, obtains the micro-ecological environment of suitable desulfurization bacterium growth.
Step (3) makes basic filler water ratio remain on 50%～65% with the basic biologic packing material of nutritive medium infuse or regular spray.In step (4) desulphurization mother solution dilution back is sprayed on the basic biologic packing material surface of infuse overnutrition liquid, its water ratio remains on about 65%～80%, tames the biologic packing material that obtained selectively removing sulfide after stablizing in 16～48 hours.
The selected microorganism filler that the inventive method obtains is applicable to the purification of sulphur-containing exhaust gas, is specially adapted to the removing and purifying of foul gas of dischargings such as petroleum chemical plant sewage work, municipal sewage plant, livestock-raising field.
Further specify the technical scheme and the effect of the inventive method below by embodiment.
Embodiment 1
Sewage from oil refinery is handled an A/O pond, and the foul gass such as hydrogen sulfide of often overflowing because of being subjected to the influence of fluctuation of operating conditions such as the A/O pond turnover water yield, water temperature, adopt the selectivity organism filler, can better adapt to the fluctuation of handling load, and foul gas is carried out purifying treatment.
Filling selectivity organism filler in the microbially decontaminate process unit, the preparation method of selectivity organism filler is as follows:
To take from the active sludge in A/O pond, sewage-farm, place 32 ℃ of bottle swingging machine (180rmin
-1) middle concussion cultivation is after 48 hours, selection MLSS has reached 1000mgL
-1Above nutrient solution places selective medium (Na
2S
2O
35H
2O 50.0g, KH
2PO
420.0g, K
2HPO
420.0g, MgSO
47H
2O 4.0g, NH
4Cl 2.0g, distilled water 5000mL transfers about pH to 7.0 with NaOH, adds 0.3% nutrient agar medium in enrichment medium).Draw above-mentioned certain volume nutrient solution in the Leathen nutrient solution, inoculate, add a certain amount of nutritive medium (trace element solution prescription: EDTA disodium salt 250g, ZnSO every day by 10% inoculum size
47H
2O 110.0g, CaCl
227.7g, MnCl
24H
2O 25.3g, FeSO
47H
2O 24.95g, (NH
4)
6Mo
7O
244H
2O 5.50g, CuSO
45H
2O 7.85g, CoCl
26H
2O 8.05g, distilled water 5000mL) and Na
2S tames the desulfurization microorganism under the condition of abundant aeration.Isolated bacterial classification is transferred in the new substratum, after 8 times, obtained the desulfurization bacterial classification of purifying.Improve the S of substratum in the mode that increases progressively day by day
2-Content is tamed the purifying desulfurization bacterium, observes desulfurization degree in the time of domestication, when desulfurization degree was kept more than 95% in continuous 5～6 days, tames and finishes, and preserves the desulfurization bacterial classification.Desulfurization bacterial classification after the separation and purification is inserted in the liquid nutrient medium, in 32 ℃ of bottle swingging machine (180rmin
-1) in concussion cultivate after 24 hours, make the desulfurization bacterium mother liquor.
Sodium phosphate class and 2.0w% potassiumphosphate class inorganic salt, 1.5w% Sulfothiorine and the NO of preparation 3.0w%
3 -, Mg
2+Deng nutritive medium.With per 3 hours spraying nutrient solution on basic filler of the nutritive medium for preparing, keep its humidity in 30～80% scopes, obtain the micro-ecological environment of suitable desulfurization bacterium growth.
Desulphurization mother solution dilution back spray on the basic biologic packing material of infuse overnutrition liquid, under 26～40 ℃ condition, is obtained the biologic packing material of selectively removing sulfide after 24 hours.
The biologic packing material rerum natura of table 1 selectively removing sulfide
| Intensity | Specific surface area | Microbial biomass | Voidage | Packing density |
| 1.3kg/cm 2 | 8000m 2/m 3 | 4.0×10 8Individual/the g filler stem | 43v％ | 280g/L |
In the treatment unit of sulphur-containing exhaust gas, wherein the concentration of hydrogen sulfide is 30 μ L/L with the selectivity applying filler of above-mentioned preparation, and the concentration of organic sulfide is 35 μ L/L, and the water ratio of filler is 65%～80%, and under the normal temperature, volume space velocity is 280h
-1The clearance of sulfocompound can reach 92% after 3 days.Concentration of hydrogen sulfide is increased suddenly to 66 μ L/L, and clearance is reduced to 85%, and the clearance of 24h postcure hydrogen returns to 92%.
Embodiment 2
In embodiment 1 described preparation process, it is 4: 1 mixed base filler that its basic filler is replaced by peat and gac volume ratio.The immersion of basis filler is identical with embodiment 1 with the spraying method of nutritive medium.Sodium phosphate class and 3.0w% potassiumphosphate class inorganic salt, 2.0w% Sulfothiorine and the NO of preparation 5.0w%
3-, Mg
2+In nutritive salt.On basic filler, sprayed nutritive salt in per 2.5 hours with the nutritive medium for preparing, keep its humidity in 30～70% scopes, desulphurization mother solution dilution back is sprayed on the basic biologic packing material of infuse overnutrition liquid, under 30 ℃～36 ℃ condition, obtain the biologic packing material of selectively removing sulfide after 24～36 hours.
The biologic packing material rerum natura of table 2 selectively removing sulfide
| Specific surface area | Microbial biomass | Voidage | Packing density |
| 11000m 2/m 3 | 5.0×10 7Individual/the g filler stem | 46v％ | 250g/L |
In the treatment unit of sulphur-containing exhaust gas, wherein the concentration of hydrogen sulfide is 50 μ L/L with the selectivity applying filler of above-mentioned preparation, and the water ratio of filler remains on 65～70%, and under the condition of normal temperature, volume space velocity is 300h
-1The clearance of 24h postcure hydrogen can reach more than 95%.Concentration of hydrogen sulfide is increased suddenly to 166 μ L/L, and clearance is reduced to 85%, and the clearance of 12h postcure hydrogen returns to 95% very soon.
Embodiment 3
In embodiment 1 described preparation process, the immersion of basic filler is identical with embodiment 1 with the spraying method of nutritive medium.Sodium phosphate class and 0.8w% potassiumphosphate class inorganic salt, 0.5w% Sulfothiorine and the NO of preparation 2w%2
3-, Mg
2+In nutritive salt.Soak biologic packing material with the nutritive medium for preparing, the nutritive substance that makes microorganism wherein obtain suitable breeding and grow.Mode with extruding will soaked microbe stuffing be fixed-type, as cylindric, spherical or the like, under 50 ℃～60 ℃ temperature condition, typing handle about 80 hours standby.Regularly to after the typing basic filler on spray nutritive salt, keep its humidity in 30～50% scopes, desulphurization mother solution dilution back is sprayed on the basic biologic packing material of infuse overnutrition liquid, under 32 ℃～40 ℃ condition, obtain the biologic packing material of selectively removing sulfide after 24～48 hours.
The biologic packing material rerum natura of table 3 selectively removing sulfide
| Intensity | Specific surface area | Microbial biomass | Voidage | Packing density |
| 1.8kg/cm 2 | 10000m 2/m 3 | 2.0×10 8Individual/the g filler stem | 49v％ | 230g/L |
In the treatment unit of sulphur-containing exhaust gas, wherein the concentration of hydrogen sulfide is 60 μ L/L with the selectivity applying filler of above-mentioned preparation, and the concentration of organic sulfide is 50 μ L/L, and the water ratio of filler is 70～80%, and under the normal temperature, volume space velocity is 300h
-1The clearance of sulfocompound can reach 90% after 3 days.Volume space velocity is increased to 450h suddenly
-1Clearance is reduced to 80%, and the clearance of 12h postcure hydrogen returns to 90%.
Comparative example 1
The preparation method of the biologic packing material that loads in the conventional microbially decontaminate process unit is as follows:
In the microbially decontaminate process unit, fill microbe stuffings such as peat, to take near the active sludge spray of A/O pond, sewage-farm or other pending waste gas on the biologic packing material surface, feeding pending sulphur-containing exhaust gas tames, and every 2 hours spray one time of nutrition liquid, the water ratio that guarantees filler was 65%～80%.Behind 10d, the peat biological filling surface breeds dominant microflora, obtains the micro-ecological environment of suitable desulfurization bacterium growth.
The peat microbe stuffing of above-mentioned ordinary method preparation and the selected microorganism filler of embodiment 1 preparation are applied to respectively in the treatment unit of sulphur-containing exhaust gas, under the processing condition identical with embodiment 1, wherein the concentration of hydrogen sulfide is 30 μ L/L, the concentration of organic sulfide is 35 μ L/L, the water ratio of filler is 65%～80%, under the normal temperature, volume space velocity is 280h
-1, compare its domestication and process parameters such as following table.
Different biologic packing material domestications of table 4 and process parameters
| The filler type | The filler domestication time | The desulfurization microbial biomass | Stablize the clearance of postcure thing |
| Conventional fillers | 10d | 6.0×10 7Individual/the g filler stem | 90％ |
| The selectivity filler | 24h | 4.0×10 8Individual/the g filler stem | 92％ |
Concentration of hydrogen sulfide is increased suddenly, be i.e. under the condition that hydrogen sulfide treatment load increase is 1～3 times, compare the desulfurization treatment effect of two kinds of different biologic packing materials.
The desulfurization treatment effect of the different biologic packing materials of table 5
From comparative example 1 as can be seen, the selected microorganism filler has stronger anti-load impact ability and shorter time of recovery than conventional biologic packing material, and the on-the-spot exhaust gas emission situation complicated and changeable of off gas treatment is had the better choice adaptive faculty.
Claims (8)
1. the preparation method of a selected microorganism filler comprises the steps:
(1) select the mixture of vegetable fibre or vegetable fibre and gac as basic biologic packing material;
(2) screening and separating goes out obligate desulfurization flora in active sludge, and a large amount of breeding cultivations in nutritive medium behind the purifying are with preparation desulfurization bacterium mother liquor;
(3), obtain the micro-ecological environment of suitable desulfurization bacterium growth with nutritive medium infuse and the basic biologic packing material of regular spray;
(4) desulphurization mother solution with step (2) preparation sprays on the basic biologic packing material of infuse overnutrition liquid, obtains the biologic packing material of selectively removing sulfide.
2. according to the described preparation method of claim 1, it is characterized in that described vegetable fibre is peat or brown coal.
3. according to the described preparation method of claim 1, it is characterized in that described vegetable fibre is a peat, the water ratio of peat is 40%～85%, and peat fibre length is 15mm～40mm.
4. according to the described preparation method of claim 1, it is characterized in that described basic biologic packing material is the mixture of vegetable fibre and gac, volume fraction 〉=50% of vegetable fibre in basic biologic packing material.
5. according to the described preparation method of claim 1, it is characterized in that the microbial film that described filling surface is hung is through a large amount of breeding cultivations obligate desulfurization bacterium mother liquor to prepare in nutritive medium of the bacterium liquid behind domestication, screening, separation and the purifying.
6. according to the described preparation method of claim 1, it is characterized in that step (3) remains on 50%～65% with the basic biologic packing material water ratio of nutritive medium infuse or regular spray.
7. according to the described preparation method of claim 1, it is characterized in that, in the step (4) with the basic biologic packing material surface of desulphurization mother solution dilution back spray at infuse overnutrition liquid, its water ratio remains on about 65～80%, tames the biologic packing material that obtained selectively removing sulfide after stablizing in 16～48 hours.
8. the selective desulfurization biologic packing material of the described method of the arbitrary claim of claim 1～7 preparation, the microbial biomass in its microbial film is 6 * 10
7～8 * 10
9Individual/the g filler stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101880987A CN102050516A (en) | 2009-10-27 | 2009-10-27 | Method for preparing selective microbial packing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101880987A CN102050516A (en) | 2009-10-27 | 2009-10-27 | Method for preparing selective microbial packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102050516A true CN102050516A (en) | 2011-05-11 |
Family
ID=43955382
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|---|---|---|---|
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935330A (en) * | 2012-11-07 | 2013-02-20 | 西安建筑科技大学 | Biological activated carbon (BAC) and method for removing H2S in oil storage tank in oil field by utilizing same |
| CN103212287A (en) * | 2013-04-15 | 2013-07-24 | 北京城市排水集团有限责任公司 | Method for producing high-efficiency biological deodorizing mixed stuffing |
| CN103979687A (en) * | 2014-01-14 | 2014-08-13 | 上海治然环保设备工程有限公司 | Integrated treatment method of deodorization and sludge digestion for sewage plant |
| CN104028043A (en) * | 2014-05-26 | 2014-09-10 | 谷屿 | Preparation method of smoke deodorizing biology filter material |
| CN104556349A (en) * | 2014-12-11 | 2015-04-29 | 浙江海洋学院 | Raw water biological pretreatment process with exogenous plant nutrition enrichment function |
| CN105481103A (en) * | 2016-01-04 | 2016-04-13 | 北京荣蒂盛环境科技有限公司 | Refuse recycled novel biological aggregate special for wet land and preparation method thereof |
| CN105688655A (en) * | 2016-02-23 | 2016-06-22 | 北京沃太斯环保科技发展有限公司 | Biological oxidation filter ball for treating malodorous hydrocarbon gases and preparation method thereof |
| CN108220278A (en) * | 2017-12-31 | 2018-06-29 | 浙江工业大学 | A kind of nutrition slow-release filler of loading functional type microorganism and its application |
| CN110237695A (en) * | 2019-05-05 | 2019-09-17 | 广西霸普环保科技有限公司 | A kind of exhaust-gas treatment biomembrane and preparation method thereof |
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| CN1899672A (en) * | 2006-07-03 | 2007-01-24 | 云南大学 | Combined liquid phase catalytic oxidizing and microbial method for simultaneously removing SO2 and nitrogen oxide in smoke |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935330A (en) * | 2012-11-07 | 2013-02-20 | 西安建筑科技大学 | Biological activated carbon (BAC) and method for removing H2S in oil storage tank in oil field by utilizing same |
| CN102935330B (en) * | 2012-11-07 | 2014-05-28 | 西安建筑科技大学 | Biological activated carbon (BAC) and method for removing H2S in oil storage tank in oil field by utilizing same |
| CN103212287A (en) * | 2013-04-15 | 2013-07-24 | 北京城市排水集团有限责任公司 | Method for producing high-efficiency biological deodorizing mixed stuffing |
| CN103979687A (en) * | 2014-01-14 | 2014-08-13 | 上海治然环保设备工程有限公司 | Integrated treatment method of deodorization and sludge digestion for sewage plant |
| CN103979687B (en) * | 2014-01-14 | 2016-06-08 | 上海治然环保设备工程有限公司 | A kind of Sewage Plant deodorization and the close-coupled processing method of sludge digestion |
| CN104028043A (en) * | 2014-05-26 | 2014-09-10 | 谷屿 | Preparation method of smoke deodorizing biology filter material |
| CN104556349A (en) * | 2014-12-11 | 2015-04-29 | 浙江海洋学院 | Raw water biological pretreatment process with exogenous plant nutrition enrichment function |
| CN105481103A (en) * | 2016-01-04 | 2016-04-13 | 北京荣蒂盛环境科技有限公司 | Refuse recycled novel biological aggregate special for wet land and preparation method thereof |
| CN105688655A (en) * | 2016-02-23 | 2016-06-22 | 北京沃太斯环保科技发展有限公司 | Biological oxidation filter ball for treating malodorous hydrocarbon gases and preparation method thereof |
| CN108220278A (en) * | 2017-12-31 | 2018-06-29 | 浙江工业大学 | A kind of nutrition slow-release filler of loading functional type microorganism and its application |
| CN110237695A (en) * | 2019-05-05 | 2019-09-17 | 广西霸普环保科技有限公司 | A kind of exhaust-gas treatment biomembrane and preparation method thereof |
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