CN110452836A - The nutriment Psychrobacter of one plant of degradation of ammonia nitrogen and its application - Google Patents

The nutriment Psychrobacter of one plant of degradation of ammonia nitrogen and its application Download PDF

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CN110452836A
CN110452836A CN201910639946.5A CN201910639946A CN110452836A CN 110452836 A CN110452836 A CN 110452836A CN 201910639946 A CN201910639946 A CN 201910639946A CN 110452836 A CN110452836 A CN 110452836A
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degradation
ammonia nitrogen
psychrobacter
bacterial strain
ammonia
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CN110452836B (en
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刘金波
孙欣
于志刚
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Weihai Coni Lihe Environmental Protection Technology Co ltd
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Abstract

This application provides the microbial strains of one plant of degradation of ammonia nitrogen, the bacterial strain is nutriment Psychrobacter (Psychrobacter cibarius) Z-XWW G, nutriment Psychrobacter (Psychrobacter cibarius) the Z-XWW G is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, and deposit number is CGMCC No.17515.Application of the complex microorganism present invention also provides above-mentioned bacterial strains and comprising above-mentioned bacterial strains in degradation of ammonia nitrogen.

Description

The nutriment Psychrobacter of one plant of degradation of ammonia nitrogen and its application
Technical field
This application involves microorganisms technical fields, more particularly to can be with the microorganism of degradation of ammonia nitrogen and its application.
Background technique
With the continuous progress increased with economic level of China human mortality, people constantly increase the demand of meat, dairy produce Add, livestock-raising scale constantly expands.While meeting meat products output, a large amount of animal wastes also generate therewith, these excrement Just it in the case where not handled rationally, can be accumulated in land, or enter ocean, the evil of release together with house refuse Odour produces very big pollution to the environment on land and ocean.
Data from national environmental protection pipe platform show that the ratio that national stench/peculiar smell is complained increases year by year, and stench is dirty Dye problem is increasingly prominent.Malodorous compound type is more, more than 168 kinds, and H2S and NH3As in foul gas it is most important at Point, have become main controlling object.
Microbial deodorant technology is cheap by its, and efficiently, advantages of environment protection becomes the Xiang Huan rapidly developed now Border Treatment process.Using microbial deodorant technology governance environment, pollutant can not only be converted to free of contamination stable material, The reasonable analysis to nutriment can also be met.In addition, deodorizing microorganism can also be used to production deodorization material, make rationally Under the premise of, preferable deodorizing effect can be maintained with the long period, improve the Sustainable Treatment to environment.
Ocean Ammonia Nitrification bacterium relies on its high-salt tolerance, and the utilization of the degradation to land foul gas not only may be implemented, Even more administer the first choice of ocean odor pollution.Filtered out from ocean efficiently, stable Ammonia Nitrification bacterial strain be meet land and An urgent demand of Marine Environmental Governance and sustainable development.
Summary of the invention
The present invention has carried out ammonia nitrogen degradation ability using ammonia-nitrogen content as Testing index, to 196 kinds of bacterial strains from ocean Assessment provides a kind of microbial strains for capableing of degradation of ammonia nitrogen.
On the one hand, the present invention provides the microbial strains of one plant of degradation of ammonia nitrogen, the bacterial strain is nutriment Psychrobacter (Psychrobacter cibarius) Z-XWW G or ZhangZhou bacillus (Bacillus zhangzhouensis) Z-XWW 77。
Wherein, nutriment Psychrobacter (Psychrobacter cibarius) the Z-XWW G is preserved in China Microbiological Culture presevation administration committee common micro-organisms center, deposit number are CGMCC No.17515.
ZhangZhou bacillus (Bacillus zhangzhouensis) Z-XWW 77 is preserved in Chinese microorganism strain Preservation administration committee common micro-organisms center, deposit number are CGMCC No.17516.
Unless otherwise specified, the nutriment Psychrobacter that deposit number is CGMCC No.17515 in the present invention (Psychrobacter cibarius) Z-XWW G can be replaced with " bacterial strain G ";Deposit number is the Zhang of CGMCC No.17516 State bacillus (Bacillus zhangzhouensis) Z-XWW 77 can be replaced with " bacterial strain 77 ".
On the other hand, the present invention provides a kind of complex microorganism bacterial strains of degradation of ammonia nitrogen.
In one embodiment, the complex microorganism bacterial strain includes nutriment Psychrobacter (Psychrobacter Cibarius) Z-XWW G and other ammonia nitrogen degradation microorganisms;Preferably, other ammonia nitrogen degradation microorganisms are selected from ZhangZhou bacillus (Bacillus zhangzhouensis) Z-XWW 77.
In other implementations, the complex microorganism bacterial strain includes ZhangZhou bacillus (Bacillus Zhangzhouensis) Z-XWW 77 and other ammonia nitrogen degradation microorganisms;Preferably, the micro- life of other ammonia nitrogen degradations Object is selected from nutriment Psychrobacter (Psychrobacter cibarius) Z-XWW G.
On the other hand, the present invention provides a kind of material of degradation of ammonia nitrogen, the material includes mentioned microorganism bacterial strain.In In one embodiment, the material can be pulvis or liquid preparation.
On the other hand, the application the present invention also provides mentioned microorganism or above-mentioned material in ammonia nitrogen degradation.
On the other hand, the present invention also provides mentioned microorganism bacterial strains or above-mentioned material in be processed sample of the processing containing ammonia In application.
The sample to be processed containing ammonia is preferably the pollutant containing ammonia, for example, sewage, waste water, house refuse, animal excreta Just, the animal wastes can be the excrement of people.
On the other hand, the present invention also provides a kind of method of ammonia nitrogen in sample to be processed of degrading, the method includes benefits The step of sample is handled with mentioned microorganism or above-mentioned material.
Further, the sample to be processed is the sample to be processed containing ammonia, preferably containing the pollutant of ammonia, for example, dirty Water, waste water, house refuse, animal wastes, the animal wastes can be the excrement of people.
In one embodiment, using nutriment Psychrobacter (Psychrobacter cibarius) Z-XWW G to sample When this is handled, treatment conditions are that temperature is 25-40 DEG C, it is preferable that 28-37 DEG C, it is further preferred that 32 DEG C;PH is 6.5-8, it is preferable that 7-7.5 it is further preferred that 7.
In another embodiment, ZhangZhou bacillus (Bacillus zhangzhouensis) Z-XWW 77 is utilized When handling sample, treatment conditions are that temperature is 25-45 DEG C, it is preferable that 32-42 DEG C, it is further preferred that 37 DEG C;PH is 6-7.5, It is preferred that 6.5-7, it is further preferred that 7.
Biomaterial preservation explanation
Biomaterial (strain): Z-XWW G;
Classification naming: nutriment Psychrobacter (Psychrobacter cibarius);
Depositary institution's title: China Committee for Culture Collection of Microorganisms's common micro-organisms center;
Depositary institution's abbreviation: CGMCC;
Depositary institution address: Yard 1, BeiChen xi Road, Chaoyang District, Beijing City 3, Institute of Microorganism, Academia Sinica are postal Coding 100101;
Preservation date: on April 2nd, 2019;
Deposit number: CGMCC No.17515;
Biomaterial (strain): Z-XWW 77;
Classification naming: ZhangZhou bacillus (Bacillus zhangzhouensis);
Depositary institution's title: China Committee for Culture Collection of Microorganisms's common micro-organisms center;
Depositary institution's abbreviation: CGMCC;
Depositary institution address: Yard 1, BeiChen xi Road, Chaoyang District, Beijing City 3, Institute of Microorganism, Academia Sinica are postal Coding 100101;
Preservation date: on April 2nd, 2019;
Deposit number: CGMCC No.17516.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Influence of Fig. 1 temperature to the mineralized nitrogen rate of bacterial strain.
Influence of Fig. 2 .pH to the mineralized nitrogen rate of bacterial strain.
77 form scanning electron microscope of Fig. 3 bacterial strain.
Fig. 4 bacterial strain G form scanning electron microscope.
Specific embodiment
For the clearer general idea for illustrating the application, carry out in an illustrative manner with reference to the accompanying drawings of the specification detailed It describes in detail bright.
It can be more clearly understood that the above objects, features, and advantages of the application, with reference to the accompanying drawing and specific implementation The application is further described in detail in mode.It should be noted that in the absence of conflict, embodiments herein And the feature in embodiment can be combined with each other.
Many details are explained in the following description in order to fully understand the application, still, the application may be used also To be implemented using other than the one described here other modes, therefore, the protection scope of the application is not by described below Specific embodiment limitation.
Embodiment one, material and method
1, microbe-derived: by 196 plants of marine microorganism bacterium of Marine Microorganisms central laboratory, Shandong Province preservation Strain.
2, culture medium
2216E solid medium: Chen Haishui 1L, peptone 5g, yeast extract 1g, high ferric phosphate 0.01g, agar powder 20g.
Seed liquid culture medium: Chen Haishui 1L, peptone 5g, yeast extract 1g, high ferric phosphate 0.01g.
Urea medium: peptone 1g sodium chloride 5g, potassium dihydrogen phosphate 2g, glucose 1g, distilled water 1000ml, 0.4% Phenol red 3ml, 20% urea 100ml, 20g;Preparation method: urea and other medium components are separated into degerming, adjust other culture mediums Ingredient Ph is cooled to 50 DEG C of left sides to it with 121 DEG C of sterilizing 20min in high-pressure sterilizing pot, is added through membrane filtration urea liquid, Make the concentration 2% of urea in culture medium, pH is 7.2 or so.
Ammonia nitrogen fermentation liquid: sucrose 10.0g, ammonium sulfate 2.0g, sodium chloride 1.0g, potassium dihydrogen phosphate 0.5g, dipotassium hydrogen phosphate 0.5g, magnesium sulfate 0.12g, distilled water 1000ml.
3, ammonia nitrogen degradation bacteria strain Primary Screening Test
The strain that activation is obtained, is seeded on urea medium, with 28 DEG C in biochemical cultivation case in a manner of scribing line Constant temperature incubation 48h, and blank control is set, plate color change is observed after 48h.
It is decomposed into ammonia and calcium carbonate under the action of urase in urea, medium pH is caused to increase, experimental result can be by Color change caused by Medium's PH Value variation judges.
4, detection method
25ml colorimetric cylinder 5 are taken, ammonia standard solution is drawn according to Tables 1 and 2 and prepares series standard solution, according to corresponding Step draws sodium hypochlorite-salicylic acid spectrophotometry respectively and Na's reagent draws standard curve respectively.
1 sodium hypochlorite of table-salicylic acid spectrophotometry ammonia standard solution is with tabulation
It is separately added into 1.0ml salicylic acid-potassium sodium tartrate solution into colorimetric cylinder, 0.4ml sodium nitroprusside, 0.4ml sodium hypochlorite uses liquid, is diluted to 25ml and shakes up, and stands 1h.Adjustment spectrophotometer wavelength is 697nm, measures extinction Degree draws standard curve.
2 Na's reagent ammonia standard solution of table is with tabulation
It is separately added into 1.0ml potassium sodium tartrate solution and 1.0ml nessler reagent into colorimetric cylinder, shakes up, water is added to be settled to 25ml.Adjustment spectrophotometer wavelength is 420nm, measures absorbance, draws standard curve
5, Ammonia Nitrification bacteria strain secondary screening is tested
The liquid 2216E culture medium of 100ml, In are accessed with the bacterial strain that oese picking primary dcreening operation obtains by 1% inoculum concentration 28 DEG C of shaken cultivation 48h, revolving speed 150r/min.Absorbance of the spectrophotometer measurement seed liquor at 600nm controls OD600= 0.5.To be placed in 28 DEG C, the shaken cultivation of 150r/min for 24 hours, is repeated several times in 5% inoculum concentration access 200ml ammonia nitrogen fermentation liquid. Histogram graph representation is established to data variance analysis with the ammonia-nitrogen content in reagent colorimetric method detection ammonia nitrogen fermentation liquid after for 24 hours Each bacterial strain mineralized nitrogen rate.
Calculation formula: mineralized nitrogen rate=(blank control group ammonia-nitrogen content-test group ammonia-nitrogen content)/blank control group ammonia Nitrogen content.
6, bacterial strain the most adaptable method
It is stand-by that strain to be tested is prepared as seed liquor.Strain inoculated is carried out to temperature respectively in ammonia nitrogen fermentation liquid, pH, is connect Kind amount test.Most suitable fermentation temperature test, in pH=7.5, under the conditions of inoculum concentration is 5%, temperature setting is 28 DEG C, 32 DEG C, 37 ℃,42℃.Most suitable fermentation pH test is 28 DEG C in temperature, under the conditions of inoculum concentration is 5%, fermentation medium pH is set as 6, 6.5,7,7.5,8.The test of most suitable fermentation inoculum concentration, in pH=7.5, under the conditions of temperature is 28 DEG C, inoculum concentration setting 1%, 3%, 5%.Investigate influence of the inoculum concentration for mineralized nitrogen rate.
7, the identification of bacterial strain, Physiology and biochemistry and form
The analysis of 16SrDNA sequence carries out bacterium colony PCR to strain to be tested, and Beijing six directions China is sent in the sequencing of DNA cloning product Big Gene Tech. Company Limited obtains gene order, and carries out homologous sequence comparison, constructs phylogenetic evolution tree.And to ammonia nitrogen The stronger culture presevation of conversion capability.Ocean ammonia nitrogen degradation bacterium physiological and biochemical analysis uses API20E kit to strain to be tested Carry out the double hydrolysis Jie's enzyme of beta-galactosidase, arginine, lysine decarboxylase, the decarboxylation of bird adnosine deaminase, zinc lemon acid-utilising, H2S are generated, Urase, tryptophan deaminase, indoles generate, 3-Hydroxybutanone generates acetyl methyl carbinol, the inspection of carbon source oxidizing physiology biochemical property It surveys.
Colony morphology characteristic observation, bacterial strain is fixed with glutaraldehyde, by University Of Qingdao's scanning electron microscopic observation.
Embodiment two, ammonia nitrogen degradation bacterial strain Primary Screening Test result
196 kinds of experimental strains to be screened are respectively totally 90 plants of fish epiphyte, and totally 54 plants of swan enteron aisle bacterial strain, sea anemone is attached Raw 52 plants of bacterial strain.
Test primary dcreening operation is divided into three grades, and it is 2 grades that plate, which does not change colour, and pale red plate color is 1 grade, and plate color is dark red to be 0 grade, primary dcreening operation experimental result such as table 3.
3 urea plate of table discoloration grade
As shown in Table 3, primary dcreening operation filters out 23 plants of bacterial strains with desired effect altogether.Wherein from fish epiphyte screen 13 Strain;9 plants are screened to obtain in swan intestinal flora;Sea anemone epiphyte screens to obtain 1 plant.
Standard curve is measured with sodium hypochlorite-salicylic acid spectrophotometry: R2=0.9402, regression equation: y= 0.0812x-0.0952;Standard curve is measured with Na's reagent: R2=0.9997, regression equation: y=0.0151x+0.006. By comparison, it was found that the R of Na's reagent2Value is very close to 1, and regression straight line is preferable to the fitting degree of observation, and hypochlorous acid Sodium-salicylic acid spectrophotometry R2Relatively small, regression straight line is general to the fitting degree of observation.
The measurement upper limit of Na's reagent is 2mg/l, and sodium hypochlorite-salicylic acid spectrophotometry measurement upper limit is 10mg/ L, and testing the expected measurement upper limit is 1.5-1.8mg/l range, chooses Na's reagent to obtain higher precision;Nessler reagent The developing time of method is 10min, and sodium hypochlorite-salicylic acid spectrophotometry developing time is 1h, therefore nessler reagent has more High efficiency.
Embodiment three, ammonia nitrogen degradation bacterial strain secondary screening test result
With 28 DEG C, 150r/min constant-temperature shaking culture for 24 hours, prepare the bacterial strain seed liquor that 23 kinds of primary dcreening operations obtain, access ammonia nitrogen Fermentation liquid measures mineralized nitrogen rate afterwards for 24 hours, calculates mineralized nitrogen rate, is as a result subject to mean+SD.
Secondary screening is the results show that 23 plants of bacterial strains that primary dcreening operation obtains have mineralized nitrogen ability bacterial strain 20 by what secondary screening obtained Strain, has 3 plants not show ammonia nitrogen degradation ability.Wherein, number be effect of the bacterial strain of G and 77 in primary dcreening operation and secondary screening compared with Good, mineralized nitrogen rate is 45% or more.
The test of the most adaptable method is carried out to bacterial strain 77 and bacterial strain G.
As shown in Figure 1, the mineralized nitrogen rate within the scope of 37 DEG C -42 DEG C of temperature of bacterial strain 77 is preferable, bacterial strain ammonia nitrogen turns at 37 DEG C Rate highest is 57.63%;Bacterial strain G mineralized nitrogen rate within the scope of 28 DEG C -42 DEG C of temperature is good, the bacterial strain ammonia nitrogen at 32 DEG C Conversion ratio highest is 51.27%;Bacterial strain 77 and bacterial strain G optimum temperature are respectively 37 DEG C, and 32 DEG C.
As shown in Fig. 2, the mineralized nitrogen rate within the scope of pH6.5-7 of bacterial strain 77 is good, and in Ph=7, bacterial strain mineralized nitrogen Rate reaches highest, is 55.09%;Bacterial strain G mineralized nitrogen rate within the scope of pH7-8 is good, in pH=7, bacterial strain mineralized nitrogen Rate reaches highest, is 56.78%.The optimal pH of bacterial strain 77 and bacterial strain G are 7.
Inoculum concentration test result is shown, in the inoculum concentration of 1%-5%, ammonia nitrogen degradation rate exists by bacterial strain 77 and bacterial strain G 50% or more.Wherein, the mineralized nitrogen rate highest when inoculum concentration is 3% of bacterial strain 77, reaches 55.93%;Bacterial strain G is in inoculum concentration Mineralized nitrogen rate highest, can achieve 55.09% when 3%.The most suitable inoculum concentration of bacterial strain 77 and bacterial strain G are 3%.
Example IV, the identification of ammonia nitrogen degradation bacterial strain
The observation of 4.1 colony characteristics
By observing the color of bacterial strain 77 and bacterial strain G bacterium colony, the morphological features such as edge, and Gram's staining is carried out, recorded Such as table 4.
4 strain morphology feature of table record
It carries out Electronic Speculum to bacterial strain 77 and bacterial strain G to take pictures observation, as a result as shown in Figure 3-4.
From Fig. 3-4: the presentation of 77 thallus of bacterial strain is rod-shaped, and cell wall is complete, thallus edge clear, has flagellum all over the body, Cytoplasmic densitometric is uniform;The presentation of bacterial strain G thallus is rod-shaped, and cell wall is complete, and thallus edge is relatively fuzzy, and cytoplasmic densitometric is more uniform.
The detection of 4.2 Physiology and biochemistries
Physiological biochemical property measurement is carried out to bacterial strain 77 and bacterial strain G, the results are shown in Table 5.
The physiological biochemical property measurement result of table 5 bacterial strain 77 and bacterial strain G
The analysis of 4.3 16SrDNA sequences
The genomic DNA for extracting bacterial strain 77 and bacterial strain G expands 16SrDNA sequence, by what is obtained as template 16SrDNA sequence BLAST software and GenBank database carry out similarity analysis, and make with the similar sequences in GenBank Multisequencing connection is made with analysis with the ClustalW of Mega 6.0.Chadogram is developed by building rudimentary system, determines 77 He of bacterial strain Bacterial strain G is respectively ZhangZhou bacillus (Bacillus zhangzhouensis) and nutriment Psychrobacter (Psychrobacter cibarius)。
Bacterial strain 77 and bacterial strain G are preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center respectively (CGMCC), deposit number is respectively CGMCC No.17516 and CGMCC No.17515.
The degradation effect of bacterial strain 77 and bacterial strain G in primary dcreening operation and secondary screening for ammonia nitrogen is preferable, and mineralized nitrogen rate can reach To 45% or more.By strain idenfication, determine that bacterial strain 77 is ZhangZhou bacillus (Bacillus zhangzhouensis), Mineralized nitrogen ability is higher than other bacillus of the prior art.Bacterial strain G is nutriment Psychrobacter (Psychrobacter Cibarius), more report is belonged to Psychrobacter at present and points out that it can secrete low-temperature lipase, be widely used in medical treatment, system The fields such as medicine, but mineralized nitrogen ability is not referred to, the application range of Psychrobacter category can be improved in this discovery.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal Replacement, improvement etc., should be included within the scope of the claims of this application.

Claims (10)

1. the microbial strains of one plant of degradation of ammonia nitrogen, the bacterial strain is nutriment Psychrobacter (Psychrobacter cibarius) Z-XWW G, which is characterized in that nutriment Psychrobacter (Psychrobacter cibarius) the Z-XWW G is preserved in China Microbiological Culture Collection administration committee common micro-organisms center, deposit number are CGMCC No.17515.
2. a kind of complex microorganism of degradation of ammonia nitrogen, which is characterized in that the complex microorganism includes described in claim 1 micro- The microorganism of biological bacterial strain and other degradation of ammonia nitrogen.
3. compound microorganism according to claim 2, which is characterized in that it is described others degradation of ammonia nitrogen microorganism be ZhangZhou bacillus (Bacillus zhangzhouensis) Z-XWW 77, ZhangZhou bacillus (Bacillus Zhangzhouensis) Z-XWW 77 is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, preservation Number is CGMCC No.17516.
4. a kind of material for degradation of ammonia nitrogen, the material includes microbial strains described in claim 1 or claim Any complex microorganism of 2-3.
5. material according to claim 4, which is characterized in that the material is pulvis or liquid preparation.
6. microbial strains described in claim 1, claim 2-3 any the compound microorganism or claim 4- 5 any materials are in ammonia nitrogen degradation or the application in be processed sample of the processing containing ammonia.
7. application according to claim 6, which is characterized in that the sample to be processed containing ammonia is the pollutant containing ammonia; Preferably, the pollutant containing ammonia is sewage, waste water, house refuse or animal wastes;It is furthermore preferred that the animal wastes are The excrement of people.
8. a kind of method of ammonia nitrogen in sample to be processed of degrading, which is characterized in that the method includes using described in claim 1 Microbial strains, any any material of the compound microorganism or claim 4-5 of claim 2-3 treats The step of processing sample is handled.
9. according to the method described in claim 8, it is characterized in that, the sample to be processed is the sample to be processed containing ammonia;It is excellent Choosing, the sample to be processed containing ammonia is the pollutant containing ammonia;Preferably, the pollutant containing ammonia is sewage, waste water, life Rubbish living or animal wastes;It is furthermore preferred that the animal wastes are the excrement of people.
10. according to any method of claim 8-9, which is characterized in that the treatment conditions are as follows: temperature 25-40 DEG C, it is preferable that 28-37 DEG C, it is further preferred that 32 DEG C;PH is 6.5-8, it is preferable that 7-7.5, it is further preferred that 7.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110452837A (en) * 2019-07-16 2019-11-15 威海科尼利合环保科技有限公司 ZhangZhou bacillus of one plant of degradation of ammonia nitrogen and its application
CN113717905A (en) * 2021-11-01 2021-11-30 渤海水产科技(滨州)有限公司 Strain RD4 and application thereof

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CN110452837A (en) * 2019-07-16 2019-11-15 威海科尼利合环保科技有限公司 ZhangZhou bacillus of one plant of degradation of ammonia nitrogen and its application

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CN101665777A (en) * 2009-09-18 2010-03-10 北京工商大学 Bacillus cereus with heterotrophic nitrification-aerobic denitrification performance and N2O emission control method thereof
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Publication number Priority date Publication date Assignee Title
CN110452837A (en) * 2019-07-16 2019-11-15 威海科尼利合环保科技有限公司 ZhangZhou bacillus of one plant of degradation of ammonia nitrogen and its application
CN110452837B (en) * 2019-07-16 2022-03-18 威海科尼利合环保科技有限公司 Zhangzhou bacillus for degrading ammonia nitrogen and application thereof
CN113717905A (en) * 2021-11-01 2021-11-30 渤海水产科技(滨州)有限公司 Strain RD4 and application thereof
CN113717905B (en) * 2021-11-01 2022-01-18 渤海水产科技(滨州)有限公司 Strain RD4 and application thereof

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