Decontamination process Industrial wastewater treatment method using waste

摘要

The present invention relates to a method for treating industrial wastewater by using a waste rock which is a decontamination wastes which is classified as industrial wastes and requires a high treatment cost per ton, The gypsum obtained by mixing desalted or dried gypsum with slurry and the dried gypsum are mixed with industrial wastewater which is maintained at pH = 10 or more by using alkaline agent such as caustic soda, quick lime, calcium hydroxide, cement, If the pH of wastewater is more than 11, it may not use alkaline agent such as caustic soda, quick lime, slaked lime, cement, slag) (In order to increase the coagulation characteristics depending on the wastewater property, soda ash and carbonate compound such as ammonium carbonate The solution was agitated for several minutes and then coagulated or precipitated, Phosphorus, total nitrogen, turbidity, suspended solids, organic matter, and the like.