溶藻菌H6对铜绿微囊藻的溶藻特性研究  

Study on the algicidal characteristics of Microcystis aeruginosa by algicidal bacterium H6

作　　者：邓信爽 代群威[1,2] 胡鸿 陈春坛 利勇 赵玉连 DENG Xinshuang;DAI Qunwei;HU Hong;CHEN Chuntan;LI Yong;ZHAO Yulian(School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010;Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory,Southwest University of Science and Technology,Mianyang Sichuan 621010;College of Life Sciences and Engineering,Southwest University of Science and Technology,Mianyang Sichuan 621010)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010 [3]西南科技大学生命科学与工程学院,四川绵阳621010

出　　处：《环境污染与防治》2023年第3期300-304,309,共6页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.41877288);区域创新发展联合基金重点项目(No.U21A2016)。

摘　　要：全球水华现象日益严重,微生物控藻由于具有成本低、高效、环境友好等优点被广泛关注。以筛自河道的一株溶藻菌H6为对象,开展其对铜绿微囊藻(Microcystis aeruginosa)的溶藻特性研究。实验结果表明,H6最佳投加量(体积分数)为5%,最佳投加时机为蓝藻水华暴发初期(680 nm波长处的光密度(OD 680)为0.3),pH控制在5~11,7 d溶藻率超过70%。H6以间接溶藻为主,直接溶藻为辅,通过分泌耐高温的溶藻物质进行除藻且溶藻产物为腐殖酸类物质。H6属于肠杆菌属(Enterobacteriaceae),在宽pH范围内有较好溶藻效果,丰富了水体蓝藻水华治理方面的菌种资源;分泌的溶藻物质的耐高温特性为后续菌粉制备及生产应用提供了便利。The global water bloom phenomenon become more and more serious.Microbial algae control is widely concerned because of its low cost,high efficiency and environmental friendliness.In this study,the algicidal bacterium H6 sieved from the river was used to carry out the study of its algicidal characteristics on Microcystis aeruginosa.The experimental results showed that the best dosage(volume fraction)of this strain was 5%,the best dosage time was at the beginning of cyanobacterial bloom when the OD 680=0.3,and the 7 d algicidal effeciency could exceed 70%after treatment in the pH range of 5-11.H6 was mainly indirect algicidal,supplemented by direct algicidal,and it removed algae by secreting algicidal substances that were resistant to high temperature with humic acid substances as the algicidal products.H6 was a strain of Enterobacteriaceae with good algicidal effect in a wide pH range,which enriched the strain resources for cyanobacterial bloom treatment in water bodies;its secreted algicidal substances were high temperature resistant,which provided convenience for subsequent powder preparation and production application.

关 键 词：蓝藻水华 溶藻菌 铜绿微囊藻 肠杆菌属 溶藻方式 

分 类 号：X52[环境科学与工程—环境工程]