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5.3.1.a) Domestic Waste Waters and Urban Runoff
Unit 5 : Heavy metal pollution
5.3.1.a) Domestic Waste Waters and Urban Runoff
Significant quantities of heavy metals are present in domestic waste waters and sewage. The use of detergents adds Fe, Mn, Ni, Zn, Co, Cr and Ar to waste waters.
A large number of metals may also be contributed by corrosion of metal pipes. Sewage sludge if discharged into the water may be a significant source of Cu, Ag, Cd, Zn and Pb.Run off from the urban areas during the rainy season is rich in certain heavy metals (Cu, Cr, Zn, Pb). The relative quantity depends upon road and traffic condition, land use and city planning. Lead from automobiles also is released into the atmosphere.
Significant quantities of heavy metals are present in domestic waste waters and sewage. The use of detergents adds Fe, Mn, Ni, Zn, Co, Cr and Ar to waste waters.
A large number of metals may also be contributed by corrosion of metal pipes. Sewage sludge if discharged into the water may be a significant source of Cu, Ag, Cd, Zn and Pb.Run off from the urban areas during the rainy season is rich in certain heavy metals (Cu, Cr, Zn, Pb). The relative quantity depends upon road and traffic condition, land use and city planning. Lead from automobiles also is released into the atmosphere.
Last modified: Monday, 13 June 2011, 9:43 AM