CN106701633A - Compound bactericide for treating sewage and sewage treatment method thereof - Google Patents
Compound bactericide for treating sewage and sewage treatment method thereof Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses compound bactericide for treating sewage and a sewage treatment method thereof, and belongs to the technical field of sewage treatment. The compound bactericide comprises the following active ingredients from following strains: rhodopseudomonas, anaerobic ammonium oxidation bacteria, candida utilis, thiobacillus denitrificans, white-rot fungi, lactobacillus plantarum, bifidobacterium, lactobacillus acidophilus, green nonsulfur bacteria, phosphorus-accumulating bacteria, aspergillus oryzae, nitrosomas, streptomyces, bacillus subtilis and propionibacterium acidipropionici. The invention also provides the method using the compound bactericide to treat the sewage. The compound bactericide and the sewage treatment method have the advantages that the effect of treating sewage is better, the technology is simple, the implementing is easy, the operability is strong, the pollution to environment is avoided, the industrial requirements are met, and the application prospect is better.
Description
Technical field
The present invention relates to a kind of composite bacteria agent for processing sewage and its method for the treatment of sewage, belong to sewage disposal technology neck
Domain.
Background technology
The sewage disposal technology of current China is basic based on the use of chemicals and combination Air Exposure, chemicals
It is again many based on hydrochloric acid, sodium chlorite, being used in combination of sodium chlorate.The application of strong acid, strong chlorine, on the one hand possesses certain dirt
Water treatment applications effect, but bring the secondary pollution of sludge therewith, what aeration was strengthened in itself is that the pressure of gas feeds, and is solved
Be " mark " problem, rather than the problem effected a permanent cure, what is be particularly acute is to leave more pollution, more smelly problem, merely
Bacteria agent administer sewage real case, do not occur really also in sewage disposal, reason is to show as flora
It is not powerful enough.Biotechnology treatment sewage is developing direction, but world's all things presence be with the presence of its function and
Meating and use.
Modern sewage treatment technology, is divided by degree for the treatment of, can be divided into one-level, two grades and tertiary treatment process.Sewage one
Undissolved suspended solid and floating substance in level treatment Applied Physics method, such as sieving, precipitation removal sewage.Sewage second-level
Treatment mainly applies bioremediation, i.e., the process of material conversion is carried out by the metabolism of microorganism, by sewage
Various complicated oxidation operations be degraded to simple material.Biological treatment to the dissolved oxygen amount in sewage quality, water temperature, water,
PH value etc. has certain requirement.Tertiary sewage treatment is on the basis of I and II treatment, to be handed over using coagulation, filtering, ion
Change, the nutritional substance such as insoluble organic matter, phosphorus, nitrogen in the physics such as counter-infiltration, chemical method removal sewage.Dirt in sewage
Dye thing composition is extremely complex, it is often necessary to which above several method is combined, and can be only achieved processing requirement.So developing one now
Step, process is simple, easy to operate domestic sewage processing method can be simplified to be particularly important.
The content of the invention
It is to solve the deficiencies in the prior art, the invention provides a kind of composite bacteria agent for processing sewage and its treatment sewage
Method, the technical scheme of use is as follows：
It is an object of the invention to provide a kind of composite bacteria agent for processing sewage, the active component of the composite bacteria agent include with
Lower bacterial strain：Red pseudomonas, anaerobism ammonia nitriding bacterium, candida utili, thiobacillus denitrificans, white-rot fungi, Lactobacillus plantarum is double
Discrimination bacillus, lactobacillus acidophilus, green non-sulfur bacteria, polyP bacteria, aspergillus oryzae, Nitrosomas, streptomycete, bacillus subtilis produces
Propionibacterium acide-propionici.
The active component of composite bacteria agent of the present invention includes the raw material of following parts by weight：5 parts -10 parts of red pseudomonas, detest
5 parts -10 parts of oxygen ammonia nitriding bacterium, 5 parts -10 parts of candida utili, 5 parts -10 parts of thiobacillus denitrificans, 5 parts -10 parts of white-rot fungi,
5 parts -10 parts of Lactobacillus plantarum, 5 parts -10 parts of Bifidobacterium, 5 parts -10 parts of lactobacillus acidophilus, 5 parts -10 parts of green non-sulfur bacteria,
5 parts -10 parts of polyP bacteria, 5 parts -10 parts of aspergillus oryzae, 5 parts -10 parts of Nitrosomas, 5 parts -10 parts of streptomycete, bacillus subtilis 5
- 10 parts of part, produces 5 parts -10 parts of propionibacterium acide-propionici.
Preferably, the active component of this composite bacteria agent includes the raw material of following parts by weight：8 parts -10 parts of red pseudomonas,
8 parts -10 parts of anaerobism ammonia nitriding bacterium, 5 parts -6 parts of candida utili, 5 parts -6 parts of thiobacillus denitrificans, 5 parts -6 parts of white-rot fungi is planted
5 parts -6 parts of thing lactobacillus, 5 parts -6 parts of Bifidobacterium, 5 parts -6 parts of lactobacillus acidophilus, 8 parts -10 parts of green non-sulfur bacteria, polyP bacteria
8 parts -10 parts, 8 parts -10 parts of aspergillus oryzae, 5 parts -6 parts of Nitrosomas, 5 parts -6 parts of streptomycete, 5 parts -6 parts of bacillus subtilis produces
5 parts -6 parts of propionibacterium acide-propionici.
It is highly preferred that the active component of composite bacteria agent of the present invention includes the raw material of following parts by weight：Red pseudomonas 8
Part, 8 parts of anaerobism ammonia nitriding bacterium, 6 parts of candida utili, 6 parts of thiobacillus denitrificans, 6 parts of white-rot fungi, 6 parts of Lactobacillus plantarum is double
6 parts of discrimination bacillus, 6 parts of lactobacillus acidophilus, 8 parts of parts of green non-sulfur bacteria, 8 parts of polyP bacteria, 8 parts of aspergillus oryzae, 6 parts of Nitrosomas, chain
6 parts of mould, 6 parts of bacillus subtilis produces 6 parts of propionibacterium acide-propionici.
Present invention also offers a kind of application of above-mentioned composite bacteria agent in sewage disposal.
A kind of method that sewage is processed using any of the above-described composite bacteria agent, it is characterised in that step is as follows：
1) preparation of fermented stalk powder：To be mixed with brown sugar and described composite bacteria agent after straw segment, detested
Aerobe fermentation packs standby, acquisition fermented stalk powder to after there is sweet taste, tart flavour and fragrance；
2) sodium hypochlorite is delivered in first water inlet of sewage disposal circulatory pool；
3) connected by link slot between first sewage disposal circulatory pool and second sewage disposal circulatory pool
Connect；Zeolite is provided with the link slot, the volume of the zeolite is connect sump volume 2/3；A length of 5m- of the link slot
10m；The fermented stalk powder of mesh bag splendid attire is provided with the link slot at port of export 1m-2m；
4) described composite bacteria agent is put into second sewage disposal circulatory pool, batch type is carried out, sewage is retained
Sewage is put into the 3rd sewage disposal circulatory pool after at least one day；
5) sewage is discharged after the 3rd sewage disposal circulatory pool retains at least one day.
Preferably, step 1) straw, brown sugar and composite bacteria agent mass ratio be 1：(0.003-0.005)：
(0.003-0.005)。
Preferably, step 2) injected volume of the sodium hypochlorite is treatment sewage matter in first sewage disposal circulatory pool
The 1%-5% of amount.
Preferably, step 4) injected volume of the composite bacteria agent is treatment sewage matter in second sewage disposal circulatory pool
The 0.5%-1% of amount.
Needed during present invention treatment sewage with the use of three-level circulatory pool, respectively the first sewage disposal circulation
Pond, the second sewage disposal circulatory pool, the 3rd sewage disposal circulatory pool, follow in the first sewage disposal circulatory pool and the second sewage disposal
Link slot is provided between cisterna ambiens, groove is built with zeolite, and the first sewage disposal circulatory pool, the second sewage disposal circulatory pool and the 3rd are dirty
Water process circulatory pool is interconnected.
Anaerobism ammonia nitriding bacterium in flora of the invention, thiobacillus denitrificans, Nitrosomas, polyP bacteria compounding, to ammonia nitrogen phosphorus
Removal effect substantially, further strengthen by the addition of white-rot fungi in addition, function, effect is significant, white rot mutually after synergy
Fungi and red pseudomonas, green non-sulfur bacteria, aspergillus oryzae, Lactobacillus plantarum, bacillus subtilis, mutually synergy can be with
Azo dyes pollutant to various persistent organic pollutants in sewage, toxicant, difficult degradation is administered comprehensively, to dirt
There is preferable removal to act on for the colourity of water, COD, metal ion, red pseudomonas, candida utili, streptomycete, bifid bar
Bacterium, lactobacillus acidophilus produces the compounding of propionibacterium acide-propionici, can comprehensively suppress harmful bacteria, with good deodorization functions.
Beneficial effect of the present invention：
A kind of sewage compounding method of the invention, by composite bacteria agent and sodium hypochlorite and the zeolite phase of special formula
With reference to so as to obtain the treatment water higher than discharge standard, the method sewage treating efficiency for above-mentioned PROCESS FOR TREATMENT sewage is high, row
The treatment water for removing can reach national standard, while simple for process, workable and environmentally safe, Neng Gouman
The requirement of sufficient industry, with preferable application prospect.A kind of sanitary sewage compounding method raw material of the invention is cheap, technique
Simply, low cost, energy-conservation is suitable to heavy industrialization utilization, practical.
The inventive method breaches intrinsic sewage disposal technology, by chemicals with the help of zeolite with bacteria agent
Be used in combination, be truly realized the same of sewage sludge and control, and be also greatly reduced the processing cost of sewage, while cooperation sets
Sewage disposal is carried out by putting several circulatory pools, the compounding of flora has accomplished full-featured, unbiased, is mutually cooperateed between strain,
The processing mode combined with composite bacteria agent and sodium hypochlorite solves the problems, such as to process sewage and sludge come thorough.The present invention need not make
With aeration system, anaerobic bacteria flora of the effect better than aerobic flora is employed.
The present invention additionally uses place of the fermented stalk powder as the self-reproduction of flora, so that the injected volume of microbial inoculum is reduced,
Can be with reduces cost.It is of the invention that zeolite is set between sodium hypochlorite technique and composite flora, sodium hypochlorite pair can be alleviated
The injury effect of flora is so that the effect of flora is able to efficiently play.Fermented stalk powder is dried and can sent out again after taking out simultaneously
Ferment is used, and zeolite can also be reused.
The inventive method can be gone to sewage disposal process with COD average removal rates, ammonia nitrogen average removal rate, Volatile Phenols
More than 99% is reached except rate, total tp removal rate, heavy metal removing rate can be favored with.
Specific embodiment
With reference to specific embodiment, the present invention will be further described, but the present invention should not be limited by the examples.
Strain is purchased from China General Microbiological DSMZ in following examples.
Embodiment 1：
A kind of composite bacteria agent for processing sewage is present embodiments provided, the active component of the composite bacteria agent includes following weight
The raw material of number：10 parts of red pseudomonas, 10 parts of anaerobism ammonia nitriding bacterium, 5 parts of candida utili, 5 parts of thiobacillus denitrificans, white rot
10 parts of fungi, 5 parts of Lactobacillus plantarum, 5 parts of Bifidobacterium, 5 parts of lactobacillus acidophilus, 10 parts of green non-sulfur bacteria, 10 parts of polyP bacteria,
5 parts of aspergillus oryzae, 5 parts of Nitrosomas, 5 parts of streptomycete, 5 parts of bacillus subtilis produces 5 parts of propionibacterium acide-propionici.
Embodiment 2
A kind of composite bacteria agent for processing sewage is present embodiments provided, the active component of the composite bacteria agent includes following weight
The raw material of number：5 parts of red pseudomonas, 5 parts of anaerobism ammonia nitriding bacterium, 10 parts of candida utili, 10 parts of thiobacillus denitrificans, white rot
5 parts of fungi, 5 parts of Lactobacillus plantarum, 10 parts of Bifidobacterium, 5 parts of lactobacillus acidophilus, 5 parts of green non-sulfur bacteria, 5 parts of polyP bacteria, rice
5 parts of aspergillus, 5 parts of Nitrosomas, 10 parts of streptomycete, 10 parts of bacillus subtilis produces 5 parts of propionibacterium acide-propionici.
Embodiment 3
A kind of composite bacteria agent for processing sewage is present embodiments provided, the active component of the composite bacteria agent includes following weight
The raw material of number：5 parts of red pseudomonas, 5 parts of anaerobism ammonia nitriding bacterium, 5 parts of candida utili, 5 parts of thiobacillus denitrificans, white rot is true
5 parts of bacterium, 10 parts of Lactobacillus plantarum, 5 parts of Bifidobacterium, 10 parts of lactobacillus acidophilus, 5 parts of green non-sulfur bacteria, 5 parts of polyP bacteria, rice
10 parts of aspergillus, 10 parts of Nitrosomas, 5 parts of streptomycete, 5 parts of bacillus subtilis produces 10 parts of propionibacterium acide-propionici.
Embodiment 4
A kind of composite bacteria agent for processing sewage is present embodiments provided, the active component of the composite bacteria agent includes following weight
The raw material of number：8 parts of red pseudomonas, 8 parts of anaerobism ammonia nitriding bacterium, 6 parts of candida utili, 6 parts of thiobacillus denitrificans, white rot is true
6 parts of bacterium, 6 parts of Lactobacillus plantarum, 6 parts of Bifidobacterium, 6 parts of lactobacillus acidophilus, 8 parts of green non-sulfur bacteria, 8 parts of polyP bacteria, meter Qu
Mould 8 parts, 6 parts of Nitrosomas, 6 parts of streptomycete, 6 parts of bacillus subtilis produces 6 parts of propionibacterium acide-propionici.
Embodiment 5
A kind of method that sewage is processed using above-mentioned composite bacteria agent is present embodiments provided, is comprised the following steps that：
1) preparation of fermented stalk powder：To enter with the composite bacteria agent described in brown sugar and claim 1 after straw segment
Row mixing, anaerobic fermentation is to there are packing after sweet taste, tart flavour and fragrance standby (at 20 DEG C -35 DEG C anaerobic fermentation about 72 hours
Complete), obtain fermented stalk powder；The mass ratio of straw, brown sugar and composite bacteria agent is 1：0.003：0.003；
2) sodium hypochlorite is delivered in first water inlet of sewage disposal circulatory pool, the injected volume of sodium hypochlorite is first
The 1% for the treatment of sewage quality in sewage disposal circulatory pool；
3) connected by link slot between first sewage disposal circulatory pool and second sewage disposal circulatory pool
Connect；Zeolite is provided with the link slot, the volume of the zeolite is connect sump volume 2/3；A length of 5m- of the link slot
10m；The fermented stalk powder of mesh bag splendid attire is provided with the link slot at port of export 1m-2m；
4) composite bacteria agent described in claim 1, the dispensing of composite bacteria agent are put into second sewage disposal circulatory pool
It is 0.5% for the treatment of sewage quality in second sewage disposal circulatory pool to measure, and carries out batch type, and sewage retains at least one
Sewage is put into the 3rd sewage disposal circulatory pool after it；
5) sewage is discharged after the 3rd sewage disposal circulatory pool retains at least one day.
Embodiment 6
A kind of method that sewage is processed using above-mentioned composite bacteria agent is present embodiments provided, is comprised the following steps that：
1) preparation of fermented stalk powder：To enter with the composite bacteria agent described in brown sugar and claim 1 after straw segment
Row mixing, anaerobic fermentation is to there are packing after sweet taste, tart flavour and fragrance standby (at 20 DEG C -35 DEG C anaerobic fermentation about 72 hours
Complete), obtain fermented stalk powder；The mass ratio of straw, brown sugar and composite bacteria agent is 1：0.005：0.005；
2) sodium hypochlorite is delivered in first water inlet of sewage disposal circulatory pool, the injected volume of sodium hypochlorite is first
The 5% for the treatment of sewage quality in sewage disposal circulatory pool；
3) connected by link slot between first sewage disposal circulatory pool and second sewage disposal circulatory pool
Connect；Zeolite is provided with the link slot, the volume of the zeolite is connect sump volume 2/3；A length of 5m- of the link slot
10m；The fermented stalk powder of mesh bag splendid attire is provided with the link slot at port of export 1m-2m；
4) composite bacteria agent described in claim 1, the dispensing of composite bacteria agent are put into second sewage disposal circulatory pool
It is 1% for the treatment of sewage quality in second sewage disposal circulatory pool to measure, and carries out batch type, and sewage is retained at least one day
Sewage is put into the 3rd sewage disposal circulatory pool afterwards；
5) sewage is discharged after the 3rd sewage disposal circulatory pool retains at least one day.
Embodiment 7：Wastewater treatment efficiency
The present embodiment is according to following groups scheme (experimental group 1, experimental group 2, experimental group 3, experimental group 4, experimental group 5, control
Group) to be tested, specific method is as follows, and sewage is processed respectively, to COD average removal rates, ammonia nitrogen average removal rate, volatilization
Property phenol clearance, total tp removal rate, heavy metal removing rate five indices are detected, as a result as shown in table 1.
Experimental group 1：Using the composite bacteria agent of embodiment 1, and using the method for processing sewage of embodiment 6
Experimental group 2：Using the composite bacteria agent of embodiment 2, and using the method for processing sewage of embodiment 6
Experimental group 3：Using the composite bacteria agent of embodiment 3, and using the method for processing sewage of embodiment 6
Experimental group 4：Using the composite bacteria agent of embodiment 4, and using the method for processing sewage of embodiment 6
Experimental group 5：Using the composite bacteria agent of embodiment 4, and using the method for processing sewage of embodiment 5
Control group：Using the processing mode of traditional aeration+aerobic flora+sodium hypochlorite
The experimental group 1-5 of table 1 treatment sewage effects are compared
As shown in Table 1：Experimental group 1-5 of the present invention COD average removal rates, ammonia nitrogen average removal rate, is waved compared to control group
Hair property phenol clearance, total tp removal rate, the five indices of heavy metal removing rate are all substantially better than control group, by the experiment of control group
Data understand that aerobic flora is not enough to treatment effect of sewage, meanwhile, chemicals directly mixes with microorganism, also makes micro- life
Effect of thing decreases, and in experimental group 1-5 of the present invention, the effect of experimental group 4 and 5 more preferably, illustrates the formula of embodiment 4 for most
Excellent formula, the process effect of embodiment 6 is best.
To sum up, composite bacteria agent provided by the present invention and technique processing method are averagely removed to COD average removal rates, ammonia nitrogen
Rate, Volatile Phenols clearance, total tp removal rate, the five indices of heavy metal removing rate have good removal effect, the present invention
Composite bacteria agent and process treatment sewage effect are good, it is adaptable to which actual production is processed.
Although the present invention is disclosed as above with preferred embodiment, it is not limited to the present invention, any to be familiar with this
The people of technology, without departing from the spirit and scope of the present invention, can do various changes and modification, therefore protection of the invention
What scope should be defined by claims is defined.
Claims (9)
1. it is a kind of process sewage composite bacteria agent, it is characterised in that the active component of the composite bacteria agent include following bacterial strain：
Red pseudomonas, anaerobism ammonia nitriding bacterium, candida utili, thiobacillus denitrificans, white-rot fungi, Lactobacillus plantarum, bifid
Bacillus, lactobacillus acidophilus, green non-sulfur bacteria, polyP bacteria, aspergillus oryzae, Nitrosomas, streptomycete, bacillus subtilis produces third
Sour Propionibacterium.
2. composite bacteria agent according to claim 1, it is characterised in that the active component of the composite bacteria agent includes following weight
The raw material of number：5 parts -10 parts of red pseudomonas, 5 parts -10 parts of anaerobism ammonia nitriding bacterium, 5 parts -10 parts of candida utili, denitrogenation
5 parts -10 parts of Thiobacillus, 5 parts -10 parts of white-rot fungi, 5 parts -10 parts of Lactobacillus plantarum, 5 parts -10 parts of Bifidobacterium, acidophilus breast bar
5 parts -10 parts of bacterium, 5 parts -10 parts of green non-sulfur bacteria, 5 parts -10 parts of polyP bacteria, 5 parts -10 parts of aspergillus oryzae, 5 part -10 of Nitrosomas
Part, 5 parts -10 parts of streptomycete, 5 parts -10 parts of bacillus subtilis produces 5 parts -10 parts of propionibacterium acide-propionici.
3. composite bacteria agent according to claim 1, it is characterised in that the active component of the composite bacteria agent includes following weight
The raw material of number：8 parts -10 parts of red pseudomonas, 8 parts -10 parts of anaerobism ammonia nitriding bacterium, 5 parts -6 parts of candida utili, denitrogenation sulphur
5 parts -6 parts of bacillus, 5 parts -6 parts of white-rot fungi, 5 parts -6 parts of Lactobacillus plantarum, 5 parts -6 parts of Bifidobacterium, 5 part -6 of lactobacillus acidophilus
Part, 8 parts -10 parts of green non-sulfur bacteria, 8 parts -10 parts of polyP bacteria, 8 parts -10 parts of aspergillus oryzae, 5 parts -6 parts of Nitrosomas, streptomycete 5
- 6 parts of part, 5 parts -6 parts of bacillus subtilis produces 5 parts -6 parts of propionibacterium acide-propionici.
4. composite bacteria agent according to claim 1, it is characterised in that the active component of the composite bacteria agent includes following weight
The raw material of number：8 parts of red pseudomonas, 8 parts of anaerobism ammonia nitriding bacterium, 6 parts of candida utili, 6 parts of thiobacillus denitrificans, white rot is true
6 parts of bacterium, 6 parts of Lactobacillus plantarum, 6 parts of Bifidobacterium, 6 parts of lactobacillus acidophilus, 8 parts of parts of green non-sulfur bacteria, 8 parts of polyP bacteria, rice
8 parts of aspergillus, 6 parts of Nitrosomas, 6 parts of streptomycete, 6 parts of bacillus subtilis produces 6 parts of propionibacterium acide-propionici.
5. application of any described composite bacteria agents of claim 1-4 in sewage disposal.
6. the method that the composite bacteria agent described in a kind of utilization claim 1 processes sewage, it is characterised in that step is as follows：
1) preparation of fermented stalk powder：To be mixed with the composite bacteria agent described in brown sugar and claim 1 after straw segment
Close, anaerobic fermentation packs standby, acquisition fermented stalk powder to after there is sweet taste, tart flavour and fragrance；
2) sodium hypochlorite is delivered in first water inlet of sewage disposal circulatory pool；
3) it is attached by link slot between first sewage disposal circulatory pool and second sewage disposal circulatory pool；Institute
State and zeolite is provided with link slot, the volume of the zeolite is connect sump volume 2/3；A length of 5m-10m of the link slot；Institute
State the fermented stalk powder for being provided with mesh bag splendid attire in link slot at port of export 1m-2m；
4) composite bacteria agent described in claim 1 is put into second sewage disposal circulatory pool, batch type, sewage is carried out
Sewage is put into the 3rd sewage disposal circulatory pool after retaining at least one day；
5) sewage is discharged after the 3rd sewage disposal circulatory pool retains at least one day.
7. method according to claim 6, it is characterised in that step 1) straw, brown sugar and composite bacteria agent
Mass ratio is 1：(0.003-0.005)：(0.003-0.005).
8. method according to claim 6, it is characterised in that step 2) injected volume of the sodium hypochlorite is first dirt
The 1%-5% for the treatment of sewage quality in water process circulatory pool.
9. method according to claim 6, it is characterised in that step 4) injected volume of the composite bacteria agent is second dirt
The 0.5%-1% for the treatment of sewage quality in water process circulatory pool.
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| CN108165509A (en) * | 2017-12-29 | 2018-06-15 | 桑德生态科技有限公司 | Compound micro-ecological preparation for the black smelly water harnessing in river and preparation method thereof |
| CN108503038A (en) * | 2018-03-09 | 2018-09-07 | 江西润垚生物科技有限公司 | A kind of zymotechnique of river sewage processing composite bacteria agent |
| CN108504593A (en) * | 2018-03-27 | 2018-09-07 | 丽水学院 | A kind of compound microbial preparation, preparation method and its application in sewage disposal |
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| CN108165509A (en) * | 2017-12-29 | 2018-06-15 | 桑德生态科技有限公司 | Compound micro-ecological preparation for the black smelly water harnessing in river and preparation method thereof |
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| CN112239734A (en) * | 2020-09-14 | 2021-01-19 | 四川见云环保科技有限公司 | Biological sewage treatment composite microbial inoculum and preparation method thereof |
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| CN113151010B (en) * | 2021-05-07 | 2023-03-14 | 马东兵 | Microbial compound bacterium preparation and preparation method thereof |
| NL2032165B1 (en) * | 2022-06-14 | 2023-02-24 | Hangzhou Vocational & Technical College | A preparation method of compound microbial agent |
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