有机碳源添加对脱氮副球菌脱氮效果的影响  

Effect of Organic Carbon Source on the Nitrogen Removal of Paracoccusdenitrificans

作　　者：司圆圆[1,2] 王林钰 张卓婷 林佳佳 陈兴汉 胡勇有[2] SI Yuanyuan;WANG Linyu;ZHANG Zhuoting;LIN Jiajia;CHEN Xinghan;HU Yongyou(Yangjiang Vocational and College,Yangjiang 529500,China;School of Environmentand Energy,South China University of Technology,Guangzhou 510006,China)

机构地区：[1]阳江职业技术学院,广东阳江529500 [2]华南理工大学,环境与能源学院,广东广州510006

出　　处：《水处理技术》2020年第4期52-55,共4页Technology of Water Treatment

基　　金：广东省农村科特特派员项目(2019);广东省青年创新人才项目(2017);广东省扬帆计划重点人才工程(C0035000);广东大学生科技创新培育项目(2020b1309);阳江市科技计划项目(2018017)。

摘　　要：以脱氮副球菌(Paracoccus denitrificans)为菌种来源,可生物降解聚合物PCL为有机碳源和生物膜载体,对养殖水体的硝酸盐氮进行脱除实验。结果表明,以特定反硝化菌株接入反硝化装置,可以有效去除硝酸盐氮和亚硝酸盐氮。经过15 d的驯化,60 d的反硝化实验,硝酸盐氮的去除率达到79%,且无亚硝态氮的明显累积;扫描电镜结果表明,固相碳源表面形成的凹陷可为脱氮副球菌提供碳源及载体,具有较好的生物利用性。以PCL为碳源,可以提高养殖水体中的C/N,且操作简单,在经济上具备一定的可行性。In the experiment of removing nitrate in aquaculture water,Paracoccusdenitrificanswas used as bacteria sources,while PCL in the form of biodegradable polymer pellets(BDPs)was used as a carbon source and a biofilm carrier.The experimental results indicated that nitrate and nitrite nitrogen were effectively removed when specific denitrifying strainswere inoculated into the denitrifying device.After 15 d of domestication and 60 dof denitrification,the removal rate of nitrate nitrogen reached 79%,and there was no significant accumulation of nitrous nitrogen;Scanning electron Microscope(SEM)results showed that depressions formed on the surface of PCL,which includinggood bioavailability,could provide carbon sources and carriers for P.denitrificans.Therefore,PLC applied as carbon source can improve C/N in aquaculturewater,and its operation is comparatively simple and economical.

关 键 词：脱氮副球菌 PCL 反硝化 硝态氮 扫描电镜 

分 类 号：X703[环境科学与工程—环境工程]