Eutrophication in waste stabilization ponds treating domestic sewage

ABSTRACT

Eutrophication was frequently observed in waste stabilization ponds treating domestic sewage in the hot summer months of May, June and July. Due to eutrophication the pond efficiency was greatly reduced. During this period the ability of the ponds to reduce nutrients was also affected. Different methods were tried for measuring eutrophication in the ponds, some of these include, measurement of light penetration, calculation of productivity index and counting of algal cells. Also health aspects of eutrophication and aquatic plant nutrients considered to be most significant for algal growth were discussed