... chloride,Soduim Acetate,ammonia water,Caustic soda,concentrated sulphuric acid,aluminium hydroxide; b:Filtration of catalyst and decoloration ... industrial waste water,industrial circulation cooling water,high purity process water; d: Filtration of gases:e.g. compressed ... ,steam,catalysis air of petrochemical industry,separation of acid mist,high temperature dusty gas in environmental protection ...