木薯淀粉废水的絮凝法处理  

Treatment of Cassava Starch Wastewater with Flocculation

作　　者：岑超平[1] 

机构地区：[1]华南理工大学化工学院,广州510641

出　　处：《上海环境科学》2001年第1期31-32,共2页Shanghai Environmental Sciences

基　　金：广东省科委重点攻关项目;编号9622055-01。

摘　　要：对木薯淀粉废水的絮凝进行了试验研究,结果表明,某些进口高分子絮凝剂有较好的絮凝效果,CODcr去除率大于60％,最高可达99.3％,总固形物去除率大于4 5％,最高可达66.8％,絮凝最佳pH值为7.0～8.5,最佳加药量为2～6mg/L,生石灰量为0.25～0.5kg/t,废水,总药剂费小于0.3元/t废水,絮凝下沉物含水率为92％左右,易脱水分离,因此,可用于木薯淀粉废水的前处理。Tests of flocculation for treating cassava starch wastewater has been conducted. The results showed that the imported synthetic polyelectrolytes flocculants produced better effect. When they were used, the CODCr removal efficiency exceedimg 60%, maximum CODCr removal efficiency was 99.3%, total solids removal efficiency exceeding45%, maximum total solids removal efficiency was 66.8%, the optimal pH for flocculation was 7.0-8.5, optimal flocculants dose was 2 - 6mg/l, lime dose for adjustment of pH value was 0.25 - 0.5kg/t, the chemicals cost didn't exceed 0.3 RMB/M3, the moisture content in the sediment was about 92%, which was dewatered easily. Therefore, flocculation is an effective pre-treatment technique for cassava starch wastewater.

关 键 词：絮凝法 废水处理 高分子絮凝剂 

分 类 号：X792.031[环境科学与工程—环境工程]