PURIFYING METHOD USING POLYMER COAGULANT

摘要

PURPOSE: A purifying method using polymer coagulant is provided, which is characterized in that aluminium sulfate, poly aluminium chloride, or poly aluminium chloride silicate is used for producing polymer coagulant. CONSTITUTION: A polymer coagulant is produced by a resin kettle, which has mechanical stirr, an injecting hole of nitrogen, a dropping funnet for injecting epichlorohydrine, and a cooling jacket for controlling reaction heat. A mixture of ethylene glycol and water is used for controlling heat. Dimethylamine solution and water are added into the mixture of inorganic coagulant for 5 hours. The solids component is 50 weight percent of the coagulant solution, and the reaction is continued for 3 hours, then, poly amine based polymer coagulant can be obtained. The coagulant can purify water by forming floc of colloid particles.