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.
出处
《上海环境科学》
CAS
CSSCI
CSCD
北大核心
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。
关键词
絮凝法
废水处理
高分子絮凝剂
Flocculation Cassava starch wastewater Wastewater treatment
