微生物絮凝剂改善污泥脱水性能的研究  

Microbial Flocculants for Improving the Dewatering Capability of Sludge

作　　者：赵继红[1] 杨劲峰[1,2] 王清宁[1] 刘从彬[1] 

机构地区：[1]河南工业大学化学化工学院,河南郑州450001 [2]信阳市环境保护科学研究所,河南信阳464000

出　　处：《环境科学与技术》2009年第11期88-90,共3页Environmental Science & Technology

摘　　要：从活性污泥中筛选出一株微生物絮凝剂产生菌,该菌在优化培养条件下所产微生物絮凝剂命名为M-127。将M-127用于污泥脱水,并与聚丙烯酰胺、聚合氯化铝以及硫酸铝进行脱水效果对比。试验结果表明,M-127投加量为2mg/L时,污泥沉降性能得到明显改善;该絮凝剂用于污泥脱水的最佳条件是:40mg/LM-127,pH=6.5;在此条件下污泥比阻(SSR)可降至4.71×1010m/kg,脱水率可达96.3%,效果优于PAC、PAM以及Al(2SO)43。A new kind of flocculants-producing bacteria was isolated from activated sludge, and microbial flocculants produced by the strain under the optimal culture conditions was named M-127, which was used to improve the dewatering capability of sludge, and compared with PAM, PAC and Al2（SO4）3. Results showed that settling capability of the sludge could be improved when M-127 dose was 2mg/L. Under the optimal dewatering conditions of microbial flocculants M-127 dose 40mg/L and pH 6.5, the resulting dewatering percentage reached 96.3%, greater than individual dose of PAM, PAC and Al2（SO4）2.

关 键 词：微生物絮凝剂 污泥 脱水 比阻 

分 类 号：X172[环境科学与工程—环境科学]