... treatment 3.Move COD ,BOD & heave metal Ferric Sulphate Of Steady Quality & Competitive Offers! ISO 9001:2000 Approved ... for ferric sulfate, please refer to the national standard of , PRC.ItemIndexIron Content,% ... efficiency inorganic flocculant, mainly used to purify and treat all kinds of drinking water, industrial water, wastewater and sewage. Moreover, ...