Global Iron Based Coagulant Market By Type (Ferric Chloride , Ferric Sulphate , Ferric Chloride Sulphate , Polyferric sulphate , and Ferrous Sulphate), By Application (Municipal waste water treatment , and Industrial waste water treatment), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029