Method of agricultural sewage water purification at troughsand a biosorption bioreactor.

Abstract

The problem of pollution of surface water affects all countries of the world. The main sources of pollution of water objects in agricultural areas are the surface runoff from cultivated lands, dairy farms and livestock farms and sewage water of communal utilities and industrial enterprises. Application of mineral and organic fertilizers and pesticides leads to an inflow of a large amount of pollutants into water bodies. Sewage water from dairy farms and livestock farms contains organic matter pollutants, in particular nitrogen and phosphorus. Human economic activity has led to intensive development of the near-riverbed territory for agricultural purposes. Excessive cultivation of land is a cause of the process of erosion. A significant amount of suspended particles and biogenic substances gets to water bodies with a surface runoff from agricultural lands. This contributes to occurrence of shoals in rivers, a growth of large floodplains, narrowing of rivers and, as a result, flooding of low and plain-lowered areas of floodplains for a long time during high water periods and rain showers.