Toxicity of herbal pharmaceutical wastewater on fish--Lebistes reticulatus (Peter).
Toxic effects of herbal pharmaceutical wastewater on common fish (Lebistes reticulatus) under laboratory conditions were studied. LC50 values for raw, neutralized, and physico-chemically treated effluent for 24, 48, 72, and 96 h ranged between 3.0-9.5%, 5.0-10.5%, and 35-41%, respectively. It was evident from the studies that physico-chemical treatment reduces the toxicity by more than 30%. This article discusses in detail the bioassay evaluation of raw, neutralized, and primary treated effluent. Physico-chemically treated effluent was further subjected to biological treatment by activated sludge system. Effluent from biological treatment revealed no toxic effect even after one month of exposure.
Vanerkar
A P
AP
National Environmental Engineering Research Institute, Nehru Marg, Nagpur, India.
Satyanarayan
Shanta
S
Dharmadhikari
D M
DM
D000818:Animals; D001681:Biological Assay; D004350:Drug Residues / Q000633:toxicity; D007220:Industrial Waste / Q000032:analysis*; D007928:Lethal Dose 50; D011036:Poecilia; D023382:Toxicity Tests, Acute; D014865:Waste Disposal, Fluid; D014873:Water Pollutants / Q000633:toxicity*
D007220:Industrial Waste; D014873:Water Pollutants