掺加粉煤灰的污泥沉降浓缩效果与利用  

Thickening Property and Utilization of Sewage Sludge Modified by fly ash

作　　者：苏柳铭[1] 岳燕飞[1] 陈伟[1] 黄义雄[1] 钱觉时[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《粉煤灰综合利用》2010年第6期19-22,共4页Fly Ash Comprehensive Utilization

基　　金：重庆市建设科技项目(城科字2007第38号);重庆市科技项目(CSTC2007AB7043)资助

摘　　要：改善污泥浓缩和脱水性能有利于污泥的处置和利用,从污泥用于建材原材料的角度,试验研究了粉煤灰在污泥沉降浓缩过程中的作用。结果显示,粉煤灰的最佳掺量为5%时,脱水混合物含水率为60%左右,低于纯污泥脱水后80%左右的含水率,将大大有利于后续的处理与利用;经粉煤灰改性后浓缩脱水得到的污泥可用作烧制陶粒。To improve thickening and dewatering properties of sewage sludge is beneficial to disposal and utilization.The influence of fly ash on sludge settlement was investigated experimentally.It is shown that the moisture content of dewatered sludge with fly ash dosage of 5% was 60%,which is favor for its subsequent processing and use.The dewatered sludge modified by fly ash can be used as raw materials to produce ceramsite.

关 键 词：粉煤灰 沉降 浓缩 陶粒 

分 类 号：X703[环境科学与工程—环境工程]