In-situ Coagulation Purification of Highly Turbid River Water

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