嗜冷反硝化聚磷菌筛选及其养殖尾水处理应用

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中图分类号：X172；X714 文献标志码：A 文章编号：1672-2043（2025）06-1623-13 doi：10.11654/jaes.2024-0683

Screening of psychrophilic denitrificationandphosphate-accumulating organism，and theapplication in culture tail water treatment

HUANG Qiurong1，²，LIU Yong1，²， JIANG Xinglong1，2*，YANG Ruolan1，2

（1.FisheriesCollge，JieiUnversityXiamen61O1hina;2.EngieeringResearchCenteroftheoderTechnolgorEel

Industry，MinistryofEducation，Xiamen，China）

Abstract：Tddressthhallengeoffntitrognandposphousremoalfroculuretailwateratlowtmperatures，esed psychrotrophicdnitrfingpolyphosphateaccumulatingstransandivestigatedtheirapplicationinelculturetailwater.Atrainof AcinetobacterjuniiPL-1，agm-emolyticstrainssitivetomostantibiotis，wassreenedfromthsubstrateofelodsbyplate cultureand16SDAsequenceanalysisforitsunctioofcolddenitrificationandpolyposphateremoval.Aonewayultleveltestwas usedtoinvestigatethetotalposphorusandnitrateitrogeremoalchractersticsofthstrainAditasfoundthat：ebogen andphosphorustreatmentefectwasachievedundertheconditionsofsodiumacetateasthecarbosource，atertemperatureof15.9 C pH 6.52，with an inoculation of 1.64% ，a C/N ratio of 5.19，and oscillation speed of 100r⋅min-1 . The removal rates of total phosphorus and nitrate nitrogen reached 86.07% and 50.66% ，respectively.In the treatment of eel culture tail water，at an average water temperature of （204号 10qC and an hydraulic retention time of 2.1 days，the PL-1 strain achieved removal rates of 76.12% for total phosphorus and 46.50% for nitratenitrogen.Theresultsdemostratethatthestrainpossesssefectivepsychrotrophicdenitificationandphosphorusremoval capabilities，offering high application value and promising market prospects.

Keywords：psychrophilic;denitrifingphosphorusaccuulatingbacteria;elculturetailwater;totalphosphorus;ntratenitrogen

我国是世界水产养殖第一大国，养殖产量高、养殖尾水多。（剩余22251字）