CN103409404B - Biological preparation for treating domestic sewage - Google Patents
Biological preparation for treating domestic sewage Download PDFInfo
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- CN103409404B CN103409404B CN201310374623.0A CN201310374623A CN103409404B CN 103409404 B CN103409404 B CN 103409404B CN 201310374623 A CN201310374623 A CN 201310374623A CN 103409404 B CN103409404 B CN 103409404B
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- bacillus
- chryseobacterium
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- pseudomonas stutzeri
- phanerochaete chrysosporium
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- 239000010865 sewage Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 27
- 241000894006 Bacteria Species 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 241000186074 Arthrobacter globiformis Species 0.000 claims description 13
- 241000193755 Bacillus cereus Species 0.000 claims description 13
- 241000194108 Bacillus licheniformis Species 0.000 claims description 13
- 241000194103 Bacillus pumilus Species 0.000 claims description 13
- 241000222393 Phanerochaete chrysosporium Species 0.000 claims description 13
- 241000589614 Pseudomonas stutzeri Species 0.000 claims description 13
- 241001509286 Thiobacillus denitrificans Species 0.000 claims description 13
- 238000009472 formulation Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- WWUZIQQURGPMPG-UHFFFAOYSA-N (-)-D-erythro-Sphingosine Natural products CCCCCCCCCCCCCC=CC(O)C(N)CO WWUZIQQURGPMPG-UHFFFAOYSA-N 0.000 claims description 10
- 241000611330 Chryseobacterium Species 0.000 claims description 10
- WWUZIQQURGPMPG-KRWOKUGFSA-N sphingosine Chemical compound CCCCCCCCCCCCC\C=C\[C@@H](O)[C@@H](N)CO WWUZIQQURGPMPG-KRWOKUGFSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 7
- 229920001661 Chitosan Polymers 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 241000056141 Chryseobacterium sp. Species 0.000 claims description 3
- 241001135759 Sphingomonas sp. Species 0.000 claims description 3
- 230000008485 antagonism Effects 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 244000005700 microbiome Species 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 230000031018 biological processes and functions Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000002068 microbial inoculum Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- CPJBEAMIONWDDK-UHFFFAOYSA-N [N].N.[P].[S] Chemical compound [N].N.[P].[S] CPJBEAMIONWDDK-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000011593 sulfur Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- -1 vitriol Chemical class 0.000 description 1
Abstract
The invention belongs to the technical field of environment friendliness, and discloses a biological preparation for treating domestic sewage. The biological preparation is formed by mixing a mixed bacterium liquid and an auxiliary preparation material at the weight ratio of 1:1. The invention further discloses a method for treating the domestic sewage via the biological preparation. In the biological preparation, various microorganisms are matched to perform actions of symbiotic coordination and cannot generate mutual antagonism; various pollutants in the sewage can be effectively removed.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of biotechnological formulation for the treatment of sanitary sewage.
Background technology
Sanitary sewage is the sewage producing in human lives's process, is one of primary pollution source of water body.Mainly ight soil and wash water.The sanitary sewage amount that discharge everyone every day in city is 150-400L, and its amount has substantial connection with standard of living.In sanitary sewage, contain large amount of organic, as Mierocrystalline cellulose, starch, carbohydrate and fat protein etc.; Also often contain pathogenic bacteria, virus and parasitic ovum; The muriate of inorganic salts, vitriol, phosphoric acid salt, supercarbonate and sodium, potassium, calcium, magnesium etc.Total feature is nitrogenous, sulfur-bearing and phosphorous height, and post-processed is more difficult.People should water conservation. and China's actual conditions are more special, and water resources occupancy volume per person is few, and spatial distribution is uneven.Along with Chinese Urbanization's, industrialized acceleration, the demand gap of water resources also increases day by day.Under such background, sewage treatment industry becomes new industry, at present and tap water production, water supply, draining, middle water reuse industry in status of equal importance.
The main method of the pollutents such as sulphur phosphorus ammonia nitrogen in prior art in conventional removal sewage has: Physical, chemical method, biological process.Physical is containing treatment technologies such as reverse osmosis, distillation, soil irrigations; Chemical method is containing treatment technologies such as ion-exchange, ammonia stripping, break point chlorination, burning, chemical precipitation, catalytic pyrolysis, electrodialysis, electrochemistry; Biological process is containing treatment technologies such as algal culture, biological nitration, immobilized biotechnologies.Practical method has at present: break point chlorination method, selective ion exchange method, ammonia blow-off method, biological process and chemical precipitation method.Wherein, break point chlorination method, selective ion exchange method, ammonia blow-off method are not suitable for large-scale industrialization application, and chemical process easily causes that other pollute, and cost is higher, and the method for the most economic environmental protection is at present biological process.Prior art is in the urgent need to a kind of simple biotechnological formulation efficient for processing sanitary sewage.
Summary of the invention
In order to overcome the deficiencies in the prior art, efficiently process simply sanitary sewage, the invention provides a kind of biotechnological formulation for the treatment of sanitary sewage, its technical scheme realizes by the following method:
For the treatment of a biotechnological formulation for sanitary sewage, it is prepared from by the following method: mixed bacteria liquid and pharmaceutical adjunct are mixed according to the weight ratio of 1:1, stir, then put cryodrying at 4-6 ℃, dry rear water content is controlled at 68%, obtains; Described microbial inoculum carrier is mixed to get according to the mass ratio of 4:2:1 by sawdust, diatomite and chitosan; Described composite bacteria liquid is mixed by the raw material bacterium of following weight percent:
Bacillus pumilus 20%, bacillus cereus 18%, Arthrobacter globiformis 16%, Pseudomonas stutzeri 12%, sphingosine sporangium 10%, thiobacillus denitrificans 8%, Phanerochaete chrysosporium 6%, Bacillus licheniformis 6%, Chryseobacterium sp 4%; The concentration of above-mentioned raw materials bacterium is all controlled at 1 * 10
8individual/ml.
Preferably,
Described bacillus pumilus be bacillus pumilus (Bacillus pumilus) ATCC27142 (can be referring to International Journal of Pharmaceutics, Volume160, Issue1,1998, Pages75-81);
Described bacillus cereus be bacillus cereus (Bacillus cereus) ATCC10876 (NewJ.Chem. for example, 2007,31,748-755).
Described Arthrobacter globiformis is Arthrobacter globiformis (Arthrobacter globiformi s) CCTCC NO:M209015 (CN101492649A);
Described Pseudomonas stutzeri is Pseudomonas stutzeri (Pseudomonas stutzeri) CCTCC NO:M209107 (referring to CN101705202A);
Described sphingosine sporangium is sphingosine sporangium (Sphingomonas sp.) CGMCC NO.4589 (visible CN102168054A);
Described thiobacillus denitrificans be thiobacillus denitrificans (Thiobacillus denitrificans) ATCC25259 (reference APPLIED AND ENVIRONMENTAL MICROBIOLOGY for example, May2007, p.3265-3271);
Described Phanerochaete chrysosporium is Phanerochaete chrysosporium (Phanerochaete chrysosporium) ATCC24725 (for example APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Feb1994, p709-714);
Described Bacillus licheniformis is Bacillus licheniformis (Bacillus licheniformis) CCTCC NO.M206082 (visible CN101037659A);
The preferred Chryseobacterium sp of described Chryseobacterium sp (Chryseobacterium sp.) CGMCC NO.5282 (visible CN102433277A).
Bacterium of the present invention all can be bought and obtain from commercial sources such as CGMCC, CCTCC and US mode culture collection warehousings (ATCC).
The enlarged culturing of each bacterial classification of the present invention is the cellar culture mode of this area, and the training method of recording in also can reference literature obtains.
The invention also discloses a kind of Technology of utilizing above-mentioned biotechnological formulation to process sanitary sewage.
The main beneficial effect that the present invention obtains is as follows:
The present invention has selected suitable bacterial classification by test of many times, carries out compatibility, environment friendly and pollution-free, with low cost, reasonable compatibility between each bacterial classification in microbiobacterial agent, symbiosis is coordinated, antagonism not mutually, its preparation method is easy, easy to implement the method, it is easy and simple to handle, is beneficial to suitability for industrialized production; The present invention utilizes biotechnological formulation to process sanitary sewage, has reduced the input of fixed capital, has reduced cost, has avoided the wasting of resources; Treatment process of the present invention has purified sanitary sewage effectively, and phosphorus and ammonia nitrogen remove simultaneously, has solved the contradiction that in traditional technology, dephosphorization and denitrification effect are difficult to take into account simultaneously.
Embodiment
By the mode that adopts specific embodiment, the present invention is further elaborated below, but it should not be construed the restriction to core initiative spirit of the present invention.
Embodiment 1
For the treatment of a biotechnological formulation for sanitary sewage, it is prepared from by the following method: mixed bacteria liquid and pharmaceutical adjunct are mixed according to the weight ratio of 1:1, stir, then put cryodrying at 6 ℃, dry rear water content is controlled at 8%, obtains; Described microbial inoculum carrier is mixed to get according to the mass ratio of 4:2:1 by sawdust, diatomite and chitosan; Described composite bacteria liquid is mixed by the raw material bacterium of following weight percent: bacillus pumilus 20%, bacillus cereus 18%, Arthrobacter globiformis 16%, Pseudomonas stutzeri 12%, sphingosine sporangium 10%, thiobacillus denitrificans 8%, Phanerochaete chrysosporium 6%, Bacillus licheniformis 6%, Chryseobacterium sp 4%; The concentration of above-mentioned raw materials bacterium is all controlled at 1 * 10
8individual/ml.
Using method: 10 grams of biotechnological formulations that at every turn add above-mentioned preparation according to every cubic metre of liquid, add every day 1 time, add continuously one week, the last standing clearance that detects afterwards pollutent in water sample for 5 days: the clearance of ammonia nitrogen and sulphur is respectively 99%, can't detect phosphor contaminant.
Embodiment 2
For the treatment of a biotechnological formulation for sanitary sewage, it is prepared from by the following method: mixed bacteria liquid and pharmaceutical adjunct are mixed according to the weight ratio of 1:1, stir, then put cryodrying at 4 ℃, dry rear water content is controlled at 6%, obtains; Described microbial inoculum carrier is mixed to get according to the mass ratio of 4:2:1 by sawdust, diatomite and chitosan; Described composite bacteria liquid is mixed by the raw material bacterium of following weight percent: bacillus pumilus 20%, bacillus cereus 18%, Arthrobacter globiformis 16%, Pseudomonas stutzeri 12%, sphingosine sporangium 10%, thiobacillus denitrificans 8%, Phanerochaete chrysosporium 6%, Bacillus licheniformis 6%, Chryseobacterium sp 4%; The concentration of above-mentioned raw materials bacterium is all controlled at 1 * 10
8individual/ml; Described bacillus pumilus is bacillus pumilus (Bacillus pumilus) ATCC27142; Described bacillus cereus is bacillus cereus (Bacillus cereus) ATCC10876; Described Arthrobacter globiformis is Arthrobacter globiformis (Arthrobacter globiformis) CCTCC NO:M209015; Described Pseudomonas stutzeri is Pseudomonas stutzeri (Pseudomonas stutzeri) CCTCC NO:M209107; Described sphingosine sporangium is sphingosine sporangium (Sphingomonas sp.) CGMCC NO.4589; Described thiobacillus denitrificans is thiobacillus denitrificans (Thiobacillus denitrificans) ATCC25259; Described Phanerochaete chrysosporium is Phanerochaete chrysosporium (Phanerochaete chrysosporium) ATCC24725; Described Bacillus licheniformis is Bacillus licheniformis (Bacillus licheniformis) CCTCC NO.M206082; Described Chryseobacterium sp is Chryseobacterium sp (Chryseobacterium sp.) CGMCC NO.5282.
Using method: sanitary sewage is selected near sewer line community, Lanshan District, according to every cubic metre of liquid, add 10 grams of the biotechnological formulations of above-mentioned preparation at every turn, add every day 1 time, add continuously one week, the last standing removal effect that detects afterwards pollutent in water sample for 5 days, pollutant load comparison before and after the sewage of processing, in Table 1:
Table 1
| Project name | Water quality before processing | Water quality after processing |
| CODcr | 2700mg/L | 17mg/L |
| NH3-N | 130mg/L | 0.9mg/L |
| S | 29mg/L | 0.2mg/L |
| P | 21mg/L | 0.02mg/L |
Although, above with general explanation and embodiment, this case having been done to detailed explanation, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, the modification done without departing from theon the basis of the spirit of the present invention or improvement, all belong to the scope of protection of present invention.
Claims (1)
1. for the treatment of a biotechnological formulation for sanitary sewage, it is prepared from by the following method: mixed bacteria liquid and pharmaceutical adjunct are mixed according to the weight ratio of 1:1, stir, then put cryodrying at 4-6 ℃, dry rear water content is controlled at 6-8%, obtains; Described pharmaceutical adjunct is mixed to get according to the mass ratio of 4:2:1 by sawdust, diatomite and chitosan; Described mixed bacteria liquid is mixed by the raw material bacterium of following weight percent: bacillus pumilus 20%, bacillus cereus 18%, Arthrobacter globiformis 16%, Pseudomonas stutzeri 12%, sphingosine sporangium 10%, thiobacillus denitrificans 8%, Phanerochaete chrysosporium 6%, Bacillus licheniformis 6%, Chryseobacterium sp 4%;
Described bacillus pumilus is bacillus pumilus (Bacillus pumilus) ATCC27142; Described bacillus cereus is bacillus cereus (Bacillus cereus) ATCC10876; Described Arthrobacter globiformis is Arthrobacter globiformis (Arthrobacter globiformis) CCTCC NO:M209015; Described Pseudomonas stutzeri is Pseudomonas stutzeri (Pseudomonas stutzeri) CCTCC NO:M209107; Described sphingosine sporangium is sphingosine sporangium (Sphingomonas sp.) CGMCC NO.4589; Described thiobacillus denitrificans is thiobacillus denitrificans (Thiobacillus denitrificans) ATCC25259; Described Phanerochaete chrysosporium is Phanerochaete chrysosporium (Phanerochaete chrysosporium) ATCC24725; Described Bacillus licheniformis is Bacillus licheniformis (Bacillus licheniformis) CCTCC NO.M206082; Described Chryseobacterium sp is Chryseobacterium sp (Chryseobacterium sp.) CGMCC NO.5282.
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| CN201310374623.0A CN103409404B (en) | 2013-08-23 | 2013-08-23 | Biological preparation for treating domestic sewage |
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| CN201310374623.0A CN103409404B (en) | 2013-08-23 | 2013-08-23 | Biological preparation for treating domestic sewage |
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| CN103409404A CN103409404A (en) | 2013-11-27 |
| CN103409404B true CN103409404B (en) | 2014-12-10 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104528955B (en) * | 2015-01-22 | 2016-08-24 | 曹俊萍 | A kind of microorganism formulation for repairing chemical fertilizer factory's sewage |
| CN104528956B (en) * | 2015-01-22 | 2016-08-24 | 马金晔 | A kind of composite bacteria agent capable for administering coal chemical industry sewage |
| CN106310320A (en) * | 2015-06-15 | 2017-01-11 | 仁维国际股份有限公司 | Deodorant and application thereof |
| CN105779344A (en) * | 2016-03-29 | 2016-07-20 | 江苏蓝星化工环保股份有限公司 | Composite microbial agent |
| CN107866203B (en) * | 2016-11-18 | 2021-09-10 | 山东鑫海科技股份有限公司 | Preparation process of desulfurization, denitrification and dust removal preparation for laterite-nickel ore ferronickel smelting |
| CN108128833A (en) * | 2016-12-01 | 2018-06-08 | 王敏涛 | The treatment process of electric system sanitary wastewater |
| CN106862260A (en) * | 2017-03-10 | 2017-06-20 | 刘晨 | A kind of biochemical process for administering Cadmium Pollution in Soils |
| CN108865943B (en) * | 2018-07-18 | 2021-09-28 | 辽宁陆海石油装备研究院有限公司 | Compound microbial agent for toilets and application thereof |
| CN110804565A (en) * | 2019-11-21 | 2020-02-18 | 河北建设集团安装工程有限公司 | Microbial agent for improving total phosphorus index of polluted water body and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6325934B1 (en) * | 2000-05-09 | 2001-12-04 | James Francis Tobey, Jr. | Enzyme and bacterial combination in a slowly dissolvable matrix for septic tanks, grease traps and waste treatment |
| CN100500831C (en) * | 2003-02-14 | 2009-06-17 | 中国科学院南京土壤研究所 | Denitrifying bacteria composition and its application |
| GB0407329D0 (en) * | 2004-03-31 | 2004-05-05 | Danisco | Process |
| CN101570366B (en) * | 2009-06-12 | 2012-05-30 | 北京金源化学集团有限公司 | Compound liquid for enhancing sewage biological treatment |
| CN102492642B (en) * | 2011-12-20 | 2013-04-17 | 江南大学 | Denitrifying strain with nitrifying function, strain-containing water body improver of multiple active microorganisms and preparation method of water body improver |
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