絮凝剂比例以及淤泥浓度对淤泥脱水速率的影响  

Effects of Silt Density and Flocculent Proportion on Flocculent Silt Dehydration

作　　者：刘林双[1] 杨国录[1] 王党伟[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《南水北调与水利科技》2009年第4期57-59,66,共4页South-to-North Water Transfers and Water Science & Technology

基　　金：湖北省科技攻关项目"污水处理厂污泥的低能耗低成本干化处理研究"(2007AA402C01)

摘　　要：通过实验着重研究淤泥在絮凝剂作用下的絮凝沉降效果和脱水速率,探讨絮凝淤泥体脱水的影响因素。以具有独立知识产权的絮凝剂FAS,进行了淤泥絮凝体含水率实验和淤泥的脱水速率实验,在不同龄期下,通过对不同絮凝剂比例和不同淤泥浓度情况比较,研究絮凝淤泥体脱水速率以及含水率变化规律,探讨淤泥浓度和FAS絮凝剂剂量对淤泥脱水速率的统计数值关系。结果表明,当絮凝剂比例在1.5～3.5、淤泥浓度约在18%～22%之间时,淤泥脱水效果和速率最佳。在最佳情况下,前48h内淤泥脱水速率较快,400h后淤泥脱水速率趋近于零。Under flocculent function, the silt flocculation and subsiding effect and the dehydrated speed were studied, silt dehydration influence factor and the degree were discussed. According to the orthogonal methods, by independent intellectual property flocculent FAS as the flocculent,the silt flocculation and subsiding experiment and the silt dehydrated experiment have carried out. Under the different ages, through compa ring the situations of different flocculent proportion and the silt density and the silt moisture content, the dehydrated speed and the silt flocculate moisture content were researched. Finally the numerical statistic effects of silt density on silt dehydration were discussed. When the flocculent proportion was in 1.5%%-3.59%% and the silt density approximately 18%-22%, the silt dehydration had the optimum effect and rate. In the best situation, the silt dehydration speed was quick in previous 48 hours, after 400 hours silt dehydration speed approached to zero.

关 键 词：淤泥浓度 淤泥絮凝 淤泥含水率 絮凝淤泥体 

分 类 号：TQ314.253[化学工程—高聚物工业]