Design of Sewage Treatment Plant Baed on SBR Technology

Abstract

Sewage  is waste water  generated  by  residential,  institutional,  commercial  and  industrial establishments.  it  commonly consists of waste  water  from  sinks, tubs, showers, dishwashers  and cloth washers and black water i.e. the water used to flush toilets, combined with the human waste that it flushes away, soaps and detergents, etc, A typical one person use 135 litre water in which 80% water converted into the waste water i.e one  person produced around 108 litre waste water every day. Sewage generally contains 99% water but the remaining materials contains sludge. Sewage contains harmful impurities like BOD,COD,TSS,N.P and harmful gases (CO2,CH4,)etc. These all Impurities are harmful for water bodies, Aquatic life, lake, river and ground water.

All these impurities we can remove with help of sewage treatment plant and remove. We can remove more than 97% harmful impurities to sewage and treated water can use in gardening,agriculture, flushing system and also drain in lake,river and water bodies.CPCB,State Pollution Control Board & NGT have decided outlet parameters of treated water .all STP Should be maintain outlet parameter as per guideline.

Based on the existing sewerage system of a City we will collect hydraulic data, sewage analysis, proposed site location and topographical surveys so as to propose a better Sewage Treatment Plant based on our assessment. We will calculate the current population and also forecasting the population after 30 years with help of censes data of the City.

Major criteria for pre-selecting the process is the consistently high effluent quality for discharge to grossly polluted River and reused effectively for landscaping, gardening etc., without any odor problems. The other requirement is the less space requirement to accommodate the plant in the available less space in the site along with the recommendations set by the “CPHEEO Manual”.