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一种脱氮菌及其在含氮污水处理中的应用制造技术

技术编号:33145684 阅读:10 留言:0更新日期:2022-04-22 13:57
本发明专利技术属于废水处理技术领域,具体涉及一种脱氮菌及其在含氮废水处理中的应用。所述菌株为Pseudomonas taiwanensisEN

【技术实现步骤摘要】
electron donor and granular iron on nitrate transformation rates in sediments from a municipal water supply aquifer.Journal of Contaminant Hydrology.46(1),81

97;Zhao,Y.X.,Feng,C.P.,Wang,Q.H.,Yang,Y.N.,Zhang,Z.Y.,Sugiura,N.2011.Nitrate removal from groundwater by cooperating heterotrophic with autotrophic denitrification in a biofilm

electrode reactor.J Hazard Mater.192(3),1033

1039)。因此,如何高效且同时去除铵、羟胺并控制亚硝酸盐、硝酸盐的积累已成为亟需解决的问题。
[0003]具有异养硝化

好氧反硝化能力的细菌,在废水处理中具有良好的应用前景,受到人们的广泛关注。好养反硝化细菌的发现打破了传统的脱氮理论,具有高效、生长速度快、消耗低、环保等优点(Yao,S.,Ni,J.,Chen,Q.and Borthwick,A.G.2013.Enrichment and characterization of a bacteria consortiumcapable of heterotrophic nitrification and aerobic denitrification at low temperature.Bioresour Technol.127,151

157)。更重要的是,好养反硝化细菌能够有效减少羟胺和亚硝酸盐的积累。例如,Pseudomonas taiwanensis J488可以在低温条件下去除铵或羟胺,并且在以铵为唯一氮源的情况下没有观察到亚硝酸盐的积累(He,T.,Xie,D.,Ni,J.,Li,Z.,Li,Z.2020.Nitrous oxide produced directly from ammonium,nitrate and nitrite during nitrification and denitrification.Journal of Hazardous Materials.388,122114)。
[0004]然而,在多种氮源共存的情况下,很少有细菌能够高效且同时去除高强度的羟胺或铵。例如,在优化条件下,Pseudomonas sp.DM02在12小时内仅能去除10mg/L的铵(Deng,M.,Zhao,X.,Senbati,Y.,Song,K.,He,X.2021.Nitrogen removal by heterotrophic nitrifying and aerobic denitrifying bacterium Pseudomonas sp.DM02:Removal performance,mechanism and immobilized application for real aquaculture wastewater treatment.Bioresour Technol.322,124555)。Zobellella taiwanensis DN

7和Pseudomonas mendocina X49菌株虽然能高效去除高浓度铵,但都不具备去除羟胺的能力(Joo,H.S.,Hirai,M.,Shoda,M.2005.Characteristics of ammonium removal by heterotrophic nitrification

aerobic denitrification by Alcaligenes faecalis No.4.J Biosci Bioeng 100(2),184

191;Xie,F.,Thiri,M.,Wang,H.2021.Simultaneous heterotrophic nitrification and aerobic denitrification by a novel isolated Pseudomonas mendocina X49.Bioresour Technol.319,124198)。Pseudomonas stutzeri C3被证明具有高效去除硝酸盐的能力,但其缺乏amoA基因,无法进行异养硝化作用(Ji,B.,Yang,K.,Wang,H.Y.,Zhou,J.,Zhang,H.N.2014.Aerobic denitrification by Pseudomonas stutzeri C3 incapable of heterotrophic nitrification.Bioprocess and Biosystems Engineering.38(2),407

409)。Pseudomonas stutzeri GEP

01具有异养硝化能力,但对铵的去除速率相对较低(3.73mg/L/h)(Gao,J.,Zhu,T.,Liu,C.,Zhang,J.,Gao,J.,Zhang,J.,Cai,M.and Li,Y.2020.Ammonium removal characteristics of heterotrophic nitrifying bacterium Pseudomonas stutzeri GEP

01with potential for treatment of ammonium

rich wastewater.Bioprocess Biosyst Eng 43(6),959

969)。此外,即使菌株Photobacterium sp.NNA4和Alcaligenes faecalisNo.4均能去除羟
胺,但在此条件下细胞不能生长(Joo,H.S.,Hirai,M.,Shoda,M.2005.Characteristics of ammonium removal by heterotrophic nitrification

aerobic denitrification by Alcaligenes faecalis No.4.JBiosci Bioeng 100(2),184

191;Liu,Y.,Ai,G.M.,Wu,M.R.,Li,S.S.,Miao,L.L.,Liu,Z.P.2019.Photobacterium sp.NNA4,an efficient hydroxylamine

transforming heterotrophic nitrifier/aerobic denitrifier.J Biosci B本文档来自技高网
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【技术保护点】

【技术特征摘要】
1.菌株,特征在于,所述菌株为菌株Pseudomonas taiwanensis EN

F2,保藏编号CCTCC NO:M 20211515。2.权利要求1所述菌株的筛选方法,其特征在于,包括以下步骤:采集土壤样品,置于灭菌的初筛培养基中进行培养;取5μL菌悬液涂于复筛培养基并划线,继续培养,选择并纯化能将溴百里酚蓝固体培养基变成蓝色的细菌作为候选菌。3.根据权利要求2所述的筛选方法,其特征在于,所述初筛培养基包括:HONH3Cl、NaNO2、CaCI2、K2HPO4、MgSO4、KH2PO4、C6H5Na3O7·
2H2O和Fe2(SO4)3,且初筛培养基的pH=7.20。4.根据权利要求2所述的筛选方法,其特征在于,所述初筛培养基包括:0.0496g/L HONH3Cl、0.0986g/L NaNO2、0.014g/L CaCI2、3.5g/L K2HPO4、...

【专利技术属性】
技术研发人员:何腾霞张漫漫
申请(专利权)人:贵州大学
类型:发明
国别省市:

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