Sewage Treatment Plant

Abstract

Sewage Treatment Plant Rivers constitute a major source of water in most countries of the world for both domestic and industrial purposes. After use, the water eventually returns to the river or is discharged out to sea, typical dry weather flow can be as high as 500 litres per person per day. In large populated areas, discharges take place at many different locations along the length of a river, thereby affecting the condition of the subsequent water abstracted downstream. Although the natural biological action of aquatic micro-organisms tend to decompose chemical pollutants discharged into rivers, current demand on the limited supplies and the time available is often insufficient. Therefore some method of purifying the effluent is required.