Effects of chlorinated cooling water discharges on the chemistry of estuarine waters

A.K. Sriraman, R. Viswanathan


The increasing tendency towards locating power plants at coastal and estuarine sites is in a large measure due to the practically unlimited amounts of cooling water available in these regions. This has also stimulated systematic investigations on the impact of the discharges on the chemistry of the receiving waters. A case in point is the use of chlorine for pretreatment of cooling waters. Available data indicate that chemical species, which result from chlorination of seawater, differ significantly from those of freshwaters. In the present paper, these differences are discussed in relation to estuaries which contain varying proportions of freshwater and seawater. A critical account is given of the models proposed to explain the reactions, behaviour and persistence of chlorine in discharge plumes in estuaries


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