Drilling waste water is researched and treated by hydrophyte, hydrophyte-chemical coagulation, chemical coagulation and chemical subsidence, of whichchemical coagulation is emphasized.

• 研究了水生植物法、水生植物一化学絮凝法、化学絮凝法、化学沉降法对钻井污水进行的处理，并着重研究了化学絮凝法。