Effluent toxicity assay of wastewater treatment plant using Daphn | 54466
Journal of Clinical Toxicology

Journal of Clinical Toxicology
Open Access

ISSN: 2161-0495

Effluent toxicity assay of wastewater treatment plant using Daphnia magna and its relation to physicochemical parameters

6th Global Summit on Toxicology & Applied Pharmacology

October 17-19, 2016 Houston, USA

Fathollah Gholami-Borujeni and Fatemeh Nejatzadeh-Barandozi

Abadan School of Medical Sciences, Iran
Islamic Azad University, Iran

Posters & Accepted Abstracts: J Clinic Toxicol

Abstract :

Evaluation of wastewater treatment plants efficiency to toxicity reduction by application of D. Magna as test organism is very important to study the likely adverse effects of the treated wastewater on the aquatic ecosystem of receiving waters. Toxicity of Urmia municipal wastewater treatment plant effluent was evaluated using bio-assay with Daphnia magna. Acute toxicity tests were performed on effluent samples of Urmia wastewater treatment plant (Biolack system) according to the USEPA methods and 24, 48, 72, and 96 h lethal concentration 50 (LC50) were calculated by application of Probit analysis. Besides, interrelationship between main effluent physicochemical parameters of wastewater (BOD5, COD, and TSS) and 24h-LC50 were studied. Results show that effluent of Urmia wastewater treatment plant, according to the standards recommended by Iran Department of Environment (DOE), based on physicochemical parameters and acute toxicity unit (TUa) was safe to be discharged to the surface waters. Relationship between effluent COD and 24h-LC50 show that as increase in effluent COD, wastewater toxicity was increased and there was no relationship between BOD5, TSS and toxicity of effluent wastewater. D. magna can serve as valuable tools for bio-monitoring of wastewater treatment plant effluent, as it is highly sensitive to pollutants.

Biography :