DECENTRALISED WASTE WATER TREATMENT SYSTEM (DEWATS) : A CASE STUDY OF AN EDUCATIONAL INSTITUTION

Abstract

Wastewater or sewage is produced every day by human activities and various industrial processes. The sudden intensification in the residents of the country and the essential need to meet the growing demands of domestic and industrial consumption, irrigation, and the existing water resources in various portions of the country are receiving exhausted, and the water quality get worse. Almost all surface water sources have been polluted to particular extent by organic pollutants, bacterial contamination and make them unfit for human feasting unless disinfected. The contaminated water increases many diseases such as typhoid, cholera, gastroenteritis, bacterial dysentery, hepatitis, poliomycitis, dysentery etc. The wastewater from every house and organizations, carrying bodily wastes (primarily urine and feces), food preparation and washing water wastes, and other waste harvests of usual existing, are categorized such as domestic or sanitary sewage. Organic pollutants and nutrients Sewage have been multifarious assortment of chemicals, with numerous distinguishing chemical appearances. These comprise in elevation concentrations of NH3, NO3, N2, phosphorus, high alkalinity, with pH characteristically oscillating between 7 and 8. The organic matter of sewage have been measured by formative its biological oxygen demand (BOD) or the chemical oxygen demand (COD).