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Sludge conditioning with extracelluar polymeric substances

MA Junjun,ZHOU Chijun   

  1. College of Environment,Nanjing University of Technology
  • Online:2010-07-05 Published:2010-07-05

胞外多聚物对污泥的调理

马军军,周迟骏   

  1. 南京工业大学环境学院

Abstract: Polymeric substances(EPS)in brewery surplus activated sludge were extracted and compared with four different methods of NaOH,heating,streaming and iron-exchange. The EPS obtained was used for sludge flocculation and conditioning. The EPS extracted with NaOH method showed 45.4% flocculation rate. The EPS was beneficial for sludge settling and filtering,because of that the specific resistance of sludge could be declined by 15.2% with the EPS extracted with NaOH method.

摘要: 采用NaOH法、加热法、蒸汽法、离子交换法4种方法分别提取啤酒厂的剩余活性污泥的胞外多聚物(EPS),并研究其絮凝性能及对污泥的调理作用。结果表明NaOH法提取剩余污泥的EPS絮凝率45.4%,EPS能改善污泥沉降性能,且NaOH法提取的EPS可以使污泥的比阻下降15.2%,加快污泥的过滤速度,从而利于污泥的脱水性能。

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