CN101638268A - Preparation method of fossilized active sludge and micro-sewage treatment method - Google Patents
Preparation method of fossilized active sludge and micro-sewage treatment method Download PDFInfo
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- CN101638268A CN101638268A CN200910194651A CN200910194651A CN101638268A CN 101638268 A CN101638268 A CN 101638268A CN 200910194651 A CN200910194651 A CN 200910194651A CN 200910194651 A CN200910194651 A CN 200910194651A CN 101638268 A CN101638268 A CN 101638268A
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- 239000010802 sludge Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010865 sewage Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000005273 aeration Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 22
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 11
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 11
- -1 polyoxyethylene Polymers 0.000 claims description 11
- 239000004971 Cross linker Substances 0.000 claims description 10
- 239000010815 organic waste Substances 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 abstract 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 abstract 2
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- 244000028419 Styrax benzoin Species 0.000 abstract 1
- 235000000126 Styrax benzoin Nutrition 0.000 abstract 1
- 235000008411 Sumatra benzointree Nutrition 0.000 abstract 1
- 229960002130 benzoin Drugs 0.000 abstract 1
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 235000019382 gum benzoic Nutrition 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 239000008213 purified water Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 23
- 241000894006 Bacteria Species 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 239000008187 granular material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003651 drinking water Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 244000059217 heterotrophic organism Species 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
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- Biological Treatment Of Waste Water (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a preparation method of fossilized active sludge and a micro-sewage treatment method in the technical field of environmental protection. The preparation method of fossilized active sludge comprises the following steps: dissolving a polyethylene glycol prepolymer in water; adding active sludge and stirring; then, adding a bis-acrylamide crosslinking agent and benzoin dimethyl ether and uniformly mixing to obtain a solution; and illuminating the solution under an ultraviolet light source, cutting and washing to obtain the fossilized active sludge. The micro-sewage treatment method by utilizing the prepared fossilized active sludge comprises the following steps: filling the fossilized active sludge in a reactor; and adding sewage to the reactor for aeration; and treating the sewage to obtain purified water. The fossilized active sludge particles are convenient to prepare, have low cost, and have high efficiency of removing ammonia nitrogen and organic matter whenbeing applied to a micro-sewage source; meanwhile, required equipment is simple and is easy to manage and maintain.
Description
Technical field
The present invention relates to a kind of preparation method of immobilized active mud and the method for processing micro-polluted water, belong to environmental protection technical field.
Background technology
The seriously polluted important factor that influences the Chinese national economy Sustainable development that become of shortage of water resources and water, various factory effluents, sanitary sewage and agricultural drainage etc. do not reach emission standard and just directly enter water body, earth surface water source has been caused great harm, and therefore source quality also sharply descends.Because that pollutes is serious day by day, many drinking water sources also are subjected to pollution in various degree, thereby make the drinking-water quality variation, have influence on resident's drinking-water health.These are by in the water source of slight pollution, because it is toxic that increasing organic compound is determined, and the existence of ammonia nitrogen can have a strong impact on water quality, and hydrobiont is worked the mischief, therefore how simple and effective these pollutents of removal, repairing contaminated water body is a comparatively urgent problem.
Can have the means that micro-polluted water is handled a lot, as: biological filter, biological contact oxidation process, activated sludge process, membrane separating method etc.These methods are alleviating water environment pollution and are removing ammonia nitrogen and the COD aspect plays an important role.But various treatment processs all have relative merits, few as the biological filter floor space, effluent quality is good, but it is not high enough to load, and the SS that is trapped in a large number concentrates on filter tank upper end tens centimeters, and head loss has herein accounted for the overwhelming majority of whole filter tank head loss, it is not high that dirty rate is received in the filter tank, microbial film easily comes off, and stops up easily, and the cycle of operation is short; The biological contact oxidation process impact load has stronger adaptive faculty, the mud growing amount is few, the harm of no sludge bulking need not mud and refluxes, and is easy to maintenance management, shortcoming is that filler is easy to stop up, gas distribution, water distribution are inhomogeneous, and filler is biomembranous carrier, are the core positions of contact-oxidation pool, have relatively high expectations, directly influence the efficient that bio-contact oxidation is handled; The activated sludge process floor space is big, and nitrifier loses easily, and nitrification efficiency is low, management maintenance inconvenience; And membrane separation technique is to removing the ammonia nitrogen nearly unavailable, and faces more serious film and pollute, and increases running cost and investment cost.
Immobilization embedded bacterium as biological reinforced means can be in the big effect of performance aspect the processing of micro-polluted water, reason be since the embedding bacterium to have an embedding bacterial density big, it is few to run off, the processing efficiency height, product is easily separated, the manageable advantage of reaction process, and can continuously and reuse; Change of external conditions is less etc. to embedding bacterium influence.These characteristics have determined that immobilization embedded bacterium is a kind of efficient low-consume, compact construction, the easy and very promising wastewater treatment immobilized biotechnology of running management.Because it is that microorganism cells is limited in a certain particular space scope, and makes it to keep biological activity, thereby therefore is particularly suitable for the embedding of poky microorganism or locates the situation that the concentration pollutent makes that microorganism growth is limited.And the embedding bacterium has again hydraulic detention time (HRT) and the isolating characteristics of sludge age, therefore can handle the contaminated-fluid of high dilution under high density cell condition; The water body of the considerable part of China is a micro-polluted water, and wherein contained ammonia nitrogen and organism can produce big harm to drinking-water quality and hydrobiont.But because it is slow to remove the nitrobacteria reproduction speed of ammonia nitrogen, and low-concentration organic makes that also the reproduction speed of heterotrophic organism is limited, therefore according to this situation, it is feasible to reach removal ammonia nitrogen and organic purpose that the method for mixt bacteria embedding is handled micro-polluted water.
Therefore be necessary to develop and a kind ofly can side by side remove ammonia nitrogen and organism efficiently, cost is low, the simple sewage water treatment method of management operating.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of preparation method of immobilized active mud and the method for processing micro-polluted water are provided.The immobilized active mud granule of the present invention's preparation is easy to prepare, and cost is low, be applied to remove ammonia nitrogen and organic matter efficiency height in the micro-polluted source water, and required equipment is simple, is easy to management maintenance.
The present invention realizes by following technical scheme:
The method for preparing immobilized active mud that the present invention relates to comprises the steps:
Step 1 is dissolved in the polyoxyethylene glycol prepolymer in the water, adds active sludge, stirs, and adds bisacrylamide crosslinker and st-yrax dme then, mixes, and gets solution;
Step 2 places irradiation under the ultraviolet source with step 1 gained solution, cutting, and washing promptly gets immobilized active mud.
In the step 1, the concentration of described polyoxyethylene glycol prepolymer in solution is: contain polyoxyethylene glycol prepolymer 10～18g in every 100ml solution.
In the step 1, the concentration of described active sludge in solution is: contain active sludge 3.2～8g in every 100ml solution.
In the step 1, the concentration of described bisacrylamide crosslinker in solution is: contain bisacrylamide crosslinker 0.5～1g in every 100ml solution.
In the step 1, the concentration of described st-yrax dme in solution is: contain st-yrax dme 0.05～0.1g in every 100ml solution.
In the step 2, described irradiation is 3～4 minutes.
The invention still further relates to a kind of method of utilizing the aforementioned immobilized active sludge treatment sewage that obtains, comprise the steps:
Step 1, immobilized active is sludge-filled in reactor;
Step 2 feeds sewage and carries out aeration in reactor, dispose of sewage the water after being purified.
In the step 1, the described particle of filling immobilized active mud by 10% of reactor volume that is filled to.
In the step 2, DO concentration is 4～6mg/l in the reactor.
In the step 2, before disposing of sewage, use the ammonia nitrogen organic waste water of 40mg/l immobilized active mud to be carried out 10～15 days domestication.
It is raw material that the present invention adopts the polyoxyethylene glycol prepolymer, is dissolved in the water, stirs with active sludge, adds linking agent again, and light trigger mixes, and places rapidly under the ultraviolet lamp source to shine 4 minutes, solidifies.After the immobilization embedded active sludge cutting washing with preparation, volume ratio with 10% is filled in the recirculation reactor, aeration, tame, utilize embedding to carry the nitrated of intravital high density nitrifier and peculiar bacterium then, Degradation reaches ammonia nitrogen in the micro-polluted source water and organic removal purpose.
Compared with prior art, the present invention has following beneficial effect: method of the present invention is easy to operate; Immobilized active mud granule prescription is simple, and preparation process is simply quick, can carry out suitability for industrialized production; Active sludge is embedded in the macromolecular material, can allow more generation time of long bacterial growth, and breeding improves processing efficiency, and the activity of embedding bacterium is not subject to the influence of outside atmosphere, adapts to the acute variation of external conditions.The immobilization embedded particles of the present invention's preparation is removed ammonia nitrogen and organic matter efficiency height, and the life-span is long, and solid-liquid separation is simple, fast, is fit to large-scale application in the processing of micro-polluted source water.The principal character of the embedding active sludge of the present invention's preparation is that the embedding active sludge is active high, and the embedding carrier life is long, can remove ammonia nitrogen and organism efficiently simultaneously, can be used for the processing of micro-polluted source water, can effectively remove wherein ammonia nitrogen and organism.
Embodiment
Present embodiment has provided detailed embodiment and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.
Embodiment 1
Preparation immobilized active mud:
Step 1 is dissolved in polyoxyethylene glycol prepolymer 18g in the 60ml water, adds the 8g active sludge, stirs, and adds 0.5g bisacrylamide crosslinker and 0.05g st-yrax dme then, adds water to 100ml at last, mixes, and gets solution;
Step 2 places under the ultraviolet source irradiation 5 minutes with step 1 gained solution, is cured; Activated sludge floc after will solidifying afterwards is cut into the cubic granules of 3mm * 3mm * 3mm, and thorough washing promptly gets the immobilized sludge particle.
Utilize the immobilized sludge of preparation that sewage is handled:
Step 1 is filled in the embedded particles for preparing in the upflowing aeration recirculation reactor with 10% volume ratio, and 15 days (DO is 4mg/l) of aeration domestication used the ammonia nitrogen organic waste water of 40mg/l during domestication;
Step 2 is handled the ammonia nitrogen organic solution of 40g/l and 10mg/l respectively.
Implementation result: 30 ℃ after handling in 4～6 hours, ammonia nitrogen removal frank reaches 92%, 85% respectively, the TOC clearance reaches 60%, 40% respectively.
Embodiment 2
Preparation immobilized active mud:
Step 1 is dissolved in polyoxyethylene glycol prepolymer 140g in the 600ml water, adds the 60g active sludge, stirs, and adds 5g bisacrylamide crosslinker and 1g st-yrax dme then, adds water to 1000ml at last, mixes, and gets solution;
Step 2 places under the ultraviolet source irradiation 4 minutes with step 1 gained solution, is cured; Activated sludge floc after will solidifying afterwards is cut into the cubic granules of 3mm * 3mm * 3mm, and thorough washing promptly gets the immobilized sludge particle.
Utilize the immobilized sludge of preparation that sewage is handled:
Step 1 is filled in the embedded particles for preparing in the upflowing aeration recirculation reactor with 10% volume ratio, and 10 days (DO is 6mg/l) of aeration domestication used the ammonia nitrogen organic waste water of 40mg/l during domestication;
Step 2 is handled the ammonia nitrogen organic solution of 40mg/l and 10mg/l respectively.Implementation result: 30 ℃ after handling in 4 hours, ammonia nitrogen removal frank reaches 95%, 90% respectively, the TOC clearance reaches 73%, 56% respectively.
Embodiment 3
Preparation immobilized active mud:
Step 1 is dissolved in polyoxyethylene glycol prepolymer 50g in the 300ml water, adds the 16g active sludge, stirs, and adds 5g bisacrylamide crosslinker and 0.5g st-yrax dme then, adds water to 500ml at last, mixes, and gets solution;
Step 2 places under the ultraviolet source irradiation 3.5 minutes with step 1 gained solution, is cured; Activated sludge floc after will solidifying afterwards is cut into the cubic granules of 3mm * 3mm * 3mm, and thorough washing promptly gets the immobilized sludge particle.
Utilize the immobilized sludge of preparation that sewage is handled:
Step 1 is filled in the embedded particles for preparing in the upflowing aeration recirculation reactor with 10% volume ratio, and 15 days (DO is 5mg/l) of aeration domestication used the ammonia nitrogen organic waste water of 40mg/l during domestication;
Step 2 is handled the ammonia nitrogen organic solution of 40mg/l and 10mg/l respectively.Implementation result: 30 ℃ after handling in 4 hours, ammonia nitrogen removal frank reaches 92%, 85% respectively, the TOC clearance reaches 68%, 62% respectively.
Embodiment 4
Preparation immobilized active mud:
Step 1,12g is dissolved in the water with the polyoxyethylene glycol prepolymer, adds the 4.5g active sludge, stirs, and adds 0.8g bisacrylamide crosslinker and 0.08g st-yrax dme then, adds water to 100ml at last, mixes, and gets solution;
Step 2 places under the ultraviolet source irradiation 3 minutes with step 1 gained solution, is cured; Activated sludge floc after will solidifying afterwards is cut into the cubic granules of 3mm * 3mm * 3mm, and thorough washing promptly gets the immobilized sludge particle.
Utilize the immobilized sludge of preparation that sewage is handled:
Step 1 is filled in the embedded particles for preparing in the upflowing aeration recirculation reactor with 10% volume ratio, and 13 days (DO is 6mg/l) of aeration domestication used the ammonia nitrogen organic waste water of 40mg/l during domestication;
Step 2 is handled the ammonia nitrogen organic solution of 40mg/l and 10mg/l respectively.Implementation result: 30 ℃ after handling in 4 hours, ammonia nitrogen removal frank reaches 93%, 86% respectively, the TOC clearance reaches 75%, 66% respectively.
Claims (10)
1, a kind of preparation method of immobilized active mud is characterized in that, comprises the steps:
Step 1 is dissolved in the polyoxyethylene glycol prepolymer in the water, adds active sludge, stirs, and adds bisacrylamide crosslinker and st-yrax dme then, mixes, and gets solution;
Step 2 places irradiation under the ultraviolet source with step 1 gained solution, cutting, and washing promptly gets immobilized active mud.
2, the preparation method of immobilized active mud according to claim 1 is characterized in that, in the step 1, the concentration of described polyoxyethylene glycol prepolymer in solution is: contain polyoxyethylene glycol prepolymer 10～18g in every 100ml solution.
3, the preparation method of immobilized active mud according to claim 1 is characterized in that, in the step 1, the concentration of described active sludge in solution is: contain active sludge 3.2～8g in every 100ml solution.
4, the preparation method of immobilized active mud according to claim 1 is characterized in that, in the step 1, the concentration of described bisacrylamide crosslinker in solution is: contain bisacrylamide crosslinker 0.5～1g in every 100ml solution.
5, the preparation method of immobilized active mud according to claim 1 is characterized in that, in the step 1, the concentration of described st-yrax dme in solution is: contain st-yrax dme 0.05～0.1g in every 100ml solution.
6, the preparation method of immobilized active mud according to claim 1 is characterized in that, in the step 2, described irradiation is 3～4 minutes.
7, a kind of method of utilizing the described immobilized active sludge treatment of claim 1 sewage is characterized in that, comprises the steps: step 1, and immobilized active is sludge-filled in reactor; Step 2 feeds sewage and carries out aeration in reactor, dispose of sewage the water after being purified.
8, method of disposing of sewage according to claim 7 is characterized in that, in the step 1, and the described particle of filling immobilized active mud by 10% of reactor volume that is filled to.
9, method of disposing of sewage according to claim 7 is characterized in that, in the step 2, DO concentration is 4～6mg/l in the reactor.
10, method of disposing of sewage according to claim 7 is characterized in that, in the step 2, before disposing of sewage, uses the ammonia nitrogen organic waste water of 40mg/l immobilized active mud to be carried out 10～15 days domestication.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101946518A CN101638268B (en) | 2009-08-27 | 2009-08-27 | Preparation method of fossilized active sludge and micro-sewage treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101946518A CN101638268B (en) | 2009-08-27 | 2009-08-27 | Preparation method of fossilized active sludge and micro-sewage treatment method |
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| CN101638268A true CN101638268A (en) | 2010-02-03 |
| CN101638268B CN101638268B (en) | 2011-01-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086057A (en) * | 2014-08-01 | 2014-10-08 | 安庆庆荣企业管理咨询有限责任公司 | Sewage treatment device combining immobilized microorganisms with constructed wetlands |
| CN108862947A (en) * | 2018-05-23 | 2018-11-23 | 南京耀珂新材料科技有限公司 | A kind of method and its application being chemically treated mud |
| CN111363737A (en) * | 2018-12-25 | 2020-07-03 | 绿丞投资（上海）有限公司 | Microorganism fixed block and preparation method and application thereof |
| CN115465949A (en) * | 2022-07-29 | 2022-12-13 | 天津正达科技有限责任公司 | Immobilized microorganism composite material with core-shell structure and preparation method thereof |
-
2009
- 2009-08-27 CN CN2009101946518A patent/CN101638268B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086057A (en) * | 2014-08-01 | 2014-10-08 | 安庆庆荣企业管理咨询有限责任公司 | Sewage treatment device combining immobilized microorganisms with constructed wetlands |
| CN104086057B (en) * | 2014-08-01 | 2016-01-20 | 深圳市星源空间环境技术有限公司 | The waste disposal plant that immobilized microorganism is combined with artificial swamp |
| CN108862947A (en) * | 2018-05-23 | 2018-11-23 | 南京耀珂新材料科技有限公司 | A kind of method and its application being chemically treated mud |
| CN111363737A (en) * | 2018-12-25 | 2020-07-03 | 绿丞投资（上海）有限公司 | Microorganism fixed block and preparation method and application thereof |
| CN111363737B (en) * | 2018-12-25 | 2023-09-29 | 绿丞投资（上海）有限公司 | Microorganism immobilization block and preparation method and application thereof |
| CN115465949A (en) * | 2022-07-29 | 2022-12-13 | 天津正达科技有限责任公司 | Immobilized microorganism composite material with core-shell structure and preparation method thereof |
| CN115465949B (en) * | 2022-07-29 | 2024-01-02 | 天津正达科技有限责任公司 | Immobilized microorganism composite material with core-shell structure and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101638268B (en) | 2011-01-19 |
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Effective date of registration: 20230109 Address after: 272114 No. 8 Anyang Road, Da'an Town, Yanzhou District, Jining City, Shandong Province Patentee after: Shandong Qingsu environmental protection material Co.,Ltd. Address before: 226236 Tongxian Road, Qidong City, Nantong City, Jiangsu Province Patentee before: JIANGSU LUBO ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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