Treatment of domestic sewage by SBR technology (India)

Sewage treatment and disposal in Indian urban Metro areas face space crunch due to dense population and high land cost. This project was planned and designed for a residential township near ‘Panvel’ and suburb of Mumbai. Sequential Batch Reactors (SBR) technology requires less space as compared to conventional technologies. The initial cost of setting up plants and operation and maintenance cost are high which are mitigated due to space, effective and odorless treatment of sewage. The plants have a high degree of automation which makes is easy to operate with less manpower. A detailed process designed to achieve desired parameters like BOD < 10 mg/L and TSS < 20 mg/L with negligible nitrogen and phosphorus concentrations has been demonstrated. The sized of various treatment units and the total required land area is significantly less than required for any other alternate treatment process. The modular arrangements help further in augmentation of capacity with population rise. The flexibility of placing water treatment structures at suitable locations and also in vertical layouts makes this treatment process most suitable for urban areas.