Sewage Treatment is the technique of eliminating pollutants from wastewater and household sewage as well as commercial and institutional effluents. The sewage may contain biological, physical and chemical impurities, and for removing such contaminants corresponding treatment is undertaken. The intention of sewage treatment is to release environmentally safe fluid waste stream (or treated effluent) and a solid waste (or treated sludge) ideal for harmless disposal or reuse (generally as fertilizers). With the advent of modern technology, now it is possible to re-use sewage effluent as drinking water.

SBR - Sequential Batch Reactor is an industrial processing tank for wastewater treatment. SBR reactors treat wastewater like sewage or output from mechanical biological treatment facilities or anaerobic digesters in batches. Oxygen is gurgled via the wastewater to minimize biochemical oxygen demand (BOD) and chemical oxygen demand (COD) to ensure its suitability for discharge into drains or for other use. The SBR is a sophisticated biological aeration type treatment plant developed to produce very high quality output from the effluent.