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首页> 外文期刊>International Journal of Engineering Research and Applications >Physico-Chemical Evaluation of Wastewater from Abattoir, Brewery, Soap and Oil Factories, at Moundou City in Southern Chad
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Physico-Chemical Evaluation of Wastewater from Abattoir, Brewery, Soap and Oil Factories, at Moundou City in Southern Chad

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摘要

The discharge of industrial wastewater in the city of Moundou deteriorates the quality of surface and underground water and soils. In this study the physicochemical quality of industrial effluents was investigated in different seasons (summer, winter and rainy). Three sampling sites were used (Central Abattoir discharge, Cotontchad (soap and oil factory) discharge, and Brewery discharge), for sampling from July 2013 to December 2014. The following physico-chemical parameters were determined: pH, Temperature, EC, dissolved oxygen, COD, BOD 5 , NO 3 ,PO 4 ,SO 4 . Also, the heavy metals: Cu, Cd, Mn, Ni, Pb, As, Zn, Cr, Fe, Al, was analyzed on spectrophotometers and results were compared with World Health Organization (WHO) permissible limits. This study revealed that most parameters were much higher than the permissible limit for wastewater discharges:some parameters were to higher: pH (12,6), Temperature (37,8 °C), C.E (4270 μS/cm), organic matters: COD (1200 mg/l), SO 4 (1280 mg/l), PO 4 (4460 mg/l), NO3 (63,6 mg/l), (Fe (63,34 mg/l), Zn (13,27 mg/l), Pb (4,0 mg/l), Cu (25,34 mg/l), Cd (31,78 mg/l), Cr (5,9 mg/l), Ni (39,5 mg/l. The study concludes that discharge of effluents by the companies; factory and materials from other anthropogenic sources severely pollute the Logone River with heavy metals and other pollutants. We recommended that each industry recycle its wastewater and put in place specific treatment plants, because pollutants to eliminate vary depending on the industry.

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