The operation of the effluent treatment plant undergoes preliminary treatment which removes the physical waste present in the effluent. This level involves physical processes like sedimentation, filtration, aeration, flow equalization, clarification, and screening. Primary Treatment involves separating large solids and organic matter from the liquid using Sedimentation tanks. It involves both physical and chemical processes. The chemical processes include chemical coagulation, pH control, chemical precipitation, flocculation, etc. Secondary treatment involves the removal of biodegradable organic matter and suspended matter to reduce the bacterial population. Tertiary wastewater treatment involves the combination of physical and chemical processes to remove harmful microbiological contaminants& inorganic matter from wastewater. The process usually involves filtration followed by additional disinfecting treatment. The treated water is safe to reuse and recycled back to the industry.