INDUSTRIAL WASTE WATER TREATMENT (A70139)

UNIT- I Sources of Industrial Waste Industrial wastewater means used up water from industries. The characteristics of waters depend on the nature of industry. Sources of Industrial Waste Water Agricultural Waste The agricultural sector produces an enormous volume of wastewater every year. The two main sources of wastewater in agriculture are: a) non-point source pollution and b) point source pollution. Non point source pollution is generally a result of surface run offs from fields, especially during periods of excessive rainfall, whereas point source pollution in agriculture is a localized source constituting animal waste, treatment, piggery waste, firewater, silage liquor, milking parlor wastes, slaughtering wastes and vegetable washing wastes. Run offs in non point source may also include nutrients, pesticides and soil sediments that cause high levels of turbidity in water bodies, encouraging the growth of aquatic plants, clog fish gills and smother animal. 2