... is an inorganic high molecular flocculant, is widely suitable for industrial sewage, such as metallurgy, pottery, coal dressing, papermaking, printing ... with and deal with in Ex-stage of drinking water.Polymeric Ferric Sulfate have great adaptability to acidity of ... off COD, BOD and heavy metal, low cost of water treating.The application and dosage of PFSNameDosageNameDosagedrinking water1:40000--1 ...