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Comparative evaluation of effects of ozonated and chlorinated thermal discharges on estuarine and freshwater organisms

Technical Report ·
DOI:https://doi.org/10.2172/6719386· OSTI ID:6719386
As a part of a program at PSE and G designed to examine the feasibility of ozonation as an alternative to chlorination for control of biofouling in once-through cooling systems, the biological effects of ozonated and chlorinated thermal discharges were evaluated with estuarine and freshwater organisms. Mortality at salinities between 0.5 to 2.5 ppt with mummichog and white perch indicated greater toxicity for chlorine while the alewife, spottail shiner, rainbow trout and white perch in freshwater were more sensitive to ozone. Behavioral and physograhic results were consistent with those observed in toxicity studies. Initial cough response and avoidance concentrations of mummicog and white perch in estuarine waters were lower when exposed to chlorine than to ozone. In freshwater, blueback herring, alewife, rainbow trout, spottail shiner, banded killifish, and white perch avoided lower concentrations of ozone than chlorine.
Research Organization:
Public Service Electric and Gas Research Corp., Newark, NJ (USA); Ichthyological Associates, Inc., Middletown, DE (USA)
DOE Contract Number:
AC02-77EV04384
OSTI ID:
6719386
Report Number(s):
DOE/EV/04384-T1
Country of Publication:
United States
Language:
English