一株生物絮凝剂产生菌的筛选及絮凝活性研究  

Screen of a Bio-flocculants-producing Strain and Study on Flocculating Activity

作　　者：王国惠[1] 

机构地区：[1]中山大学环境科学与工程学院,广州510275

出　　处：《微生物学通报》2006年第5期107-111,共5页Microbiology China

基　　金：河南省科技厅自然科学基金项目(No.0211050900);中山大学实验室开放基金项目(No.KF2005013);中山大学2005年学生科研立项项目

摘　　要：从活性污泥中筛选到一株产絮凝剂的菌株WJ-100。该菌株产絮凝剂的适宜pH塑6．5。适宜温度为25℃～40℃，摇床速度为80～240r／min；Na^＋、K^＋、Ca^2＋、Fe^3＋均有较好的促絮凝作用，Ca^2＋尤为显著；WJ-100以多种糖类为良好碳源，絮凝率达99.2％、99．8％甚至100％；该菌株在高岭土悬液pH2．0～10．0范围均有较好的絮凝效果。WJ-100在较大的pH、温度、碳源、摇床速度、搅拌速度等范围内均具有很高的絮凝活性，显示出重要的研究和应用价值。A strain, WJ-100, with high flocculating activity was screened from activated sludge. Its optimum pH was 6. 5 and optimum temperature was 25℃～40℃. Its shaking speed was in the range of 80 ～ 240 r/min. Na^＋ , K^＋ , Ca^2＋ and Fe^3＋ could accelerate flocculation. Ca^2＋ did the most obviously. WJ-100 can use various saccharides as good sources of carbon, the flocculating rate reached 99.2%, 99.8%, even 100%. The strain could flocculate very well when pH of Kaolin clay suspension was 2.0 ～ 10. 0. WJ-100 had high flocculation efficiency in the conditions of relatively large pH value, temperature, sources of carbon, shaking speed, mixing speed etc. and showed fine resaeroh and application importance.

关 键 词：絮凝剂产生菌 微生物絮凝剂 絮凝活性 

分 类 号：X172[环境科学与工程—环境科学]