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6818909 
Journal Article 
Reduction in toxicity of organic priority pollutants by pilot-scale conventional wastewater treatment process 
Horning, WB; Robinson, EL; Petrasek, AC 
1984 
Yes 
Archives of Environmental Contamination and Toxicology
ISSN: 0090-4341
EISSN: 1432-0703 
13 
2 
191–196 
English 
6721582 
WOS:A1984SG24000008 
Static acute toxicity tests with fathead minnows, Daphnia magna, and rainbow trout demonstrated the effectiveness of a pilot-scale conventional wastewater treatment system. The system detoxified a raw municipal wastewater that continuously received a mixture of 22 organic priority pollutants. Effluents from Cincinnati were added to two parallel activated sludge systems. The process reduced pollutant levels by 89-99%. Even though toxicity reduction was as high as 90%, significant toxicity was present in experimental effluents.