What is the effluent standard for Class 1A?
1 Answers
Class 1A standard is the basic requirement for the effluent of urban sewage treatment plants to be used as reclaimed water. The effluent standards for Class 1A are as follows: 1. Chemical Oxygen Demand (COD) -- 50mg/L. 2. Biochemical Oxygen Demand (BOD) -- 10mg/L. 3. Suspended Solids (SS) -- 10mg/L. 4. Animal and Vegetable Oils -- 1mg/L. 5. Petroleum -- 1mg/L. 6. Anionic Surfactant -- 0.5mg/L. 7. Total Nitrogen (TN) -- 15mg/L. 8. Ammonia Nitrogen (NH3-N) -- 5 (8) mg/L. 9. Total Phosphorus (TP) -- 0.5mg/L.