1. Used as a coagulant in sewage treatment, it has good decolorization ability, and also has the functions of removing heavy metal ions, oil removal, phosphorus removal, sterilization, etc., especially for decolorization of printing and dyeing wastewater and removal of COD and ferrite of electroplating wastewater. Co-precipitation and other effects are obvious.
2. Used as a precipitant, it can form precipitates with sulfides, phosphates, etc., thereby removing sulfides, phosphates, etc.
3. Aluminum sulfate is easily soluble in water, and the aluminum sulfate aqueous solution is slightly acidic. It is widely used for the purification treatment of drinking water and industrial water. It is suitable for wastewater treatment with lower alkalinity; as a precipitant, it can remove sulfide ions, phosphate ions, etc.
4. In the papermaking industry, it can be used as a precipitant for rosin gum, wax emulsion and other rubber materials, as a flocculant in water treatment, as a retention agent in foam fire extinguishers, as a raw material for manufacturing alum and aluminum white, as a petroleum decolorization, deodorant, and Raw materials for some drugs, etc. Artificial gemstones and high-grade ammonium alum can also be produced. Products with an arsenic content of no more than 5 mg/kg can be used as flocculants for water treatment.