高浊度河水的原位混凝净化工程研究

In-situ Coagulation Purification of Highly Turbid River Water

针对河道采砂导致的高浊度河水,在河道中选择长为3.9 km的河段实施聚合氯化铝(PAC)混凝净化工程试验,控制PAC投量约为15 mg/L,连续运行近1个月,净化后河水清澈见底、浊度可降到10 NTU以下。工程试验表明,高浊度河水原位混凝净化效果稳定。

To address the highly turbid river water owing to river sand mining, a coagulation process was adopted to purify the turbid river water in situ. The purification process was put in practice in a river of 3.9 km long with PAC coagulant. After purification with 15 mg/L PAC dosage and operation time of nearly one month, the river water became limpid, and turbidity fell below 10 NTU. The practice shows that the coagulation process could achieve stable purification of highly turbid river water in situ, easy operation and management.