Effects of chlorinated organics from wastewater treatment on algal growth.

Chlorinated organic compounds resu l t from ch lor inat ion treatment of wastewater. The discharges, containing these compounds, in to the aquatic environment have resulted in widespread concern. Invest igat ions have been conducted on the ef fects of these chloro-organics on aquatic l i f e . Most of the studies, however, have been conducted on zooplankton or higher organisms. Only l imi ted information is avai lable concerning the b iotox ic i ropert ies of chlor inated ef f luents on phytoplankton populations ZILLICH 1972, BRUNGS 1973, GEHRS & JOLLEu 1975). The phytoplankton which const i tu te the primary t rophic level can be important for the early screening of the t ox i c i t y of these chlor inated organics to aquatic biota. This study invest igates the ef fects of ch lor ine-conta in ing organic compounds formed from the ch lor inat ion of domestic wastewater of phytoplankton growth.