Coagulants treated with aging with polyvalent ionic inorganic acid and its salt in aluminum salt

摘要

The addition of two or more polyvalent ionic inorganic acids and salts thereof to a coagulant mainly composed of an aluminum salt such as aluminum chloride, aluminum sulfate, aluminum sulfate, aluminum polysulfate containing aluminum sulfate and aluminum polysulfate, which are conventionally agglomerates, is aged to form flocs at low temperature and low turbidity And which can be expected to accelerate sedimentation speed and strengthen flocs, and which can prevent the formation of insoluble white precipitates during storage.