In order to prevent water losses through disposing hydrous sludge during treatment of water. also recovery and reuse of chemicals; treatment by magnesium carbonate as a coagulant was examined in batch and continuous systems. 600 mg/1 MgCO3 as optimum dosage reduced 80% turbidity of a highly turbid water containing 200 NTU. Sulfates decreased. https://lockdownsecuritycanada.shop/product-category/cd-receiver/