Discharge standard of industrial wastewater in Chongqing

The discharge standard of COD is no more than 50 mg per liter, and the PH value is 6 to 9. Industrial wastewater refers to wastewater, sewage and waste liquid produced in industrial production, including industrial raw materials, intermediate products, products lost with water and pollutants produced in the production process. In 2023, the discharge standard of industrial wastewater in Chongqing is that the discharge standard of COD is no more than 50 mg per liter, and the PH value is 6 to 9.