NDLI: Analysis of heavy metals, physicochemical parameters and effect of blending on treatability of wastewaters in Northern Ethiopia

Content Provider	Springer Nature Link
Author	Amare, E. Kebede, F. Mulat, W.
Copyright Year	2017
Abstract	The present study monitored textile factory, distillery, and domestic wastewaters and investigated the effects of blending on the physicochemical properties of these wastes. Findings revealed that distillery wastewaters had the highest values of all tested parameters, including heavy metals, biodegradable organics, and nutrients. Biological and chemical oxygen demands in the textile wastewater were higher than domestic wastewater, while total phosphorus, total nitrogen, and sulfate were higher in the domestic wastewater. Likewise, while higher mean concentrations of zinc, copper, iron, and manganese were found in the domestic wastewater, the rest studied heavy metals did not show statistical differences (p < 0.05). This study concluded that blending improves biological treatability and effectively neutralizes the alkaline textile, acidic distillery, and domestic wastewaters at volumetric ratios of 3:1:18, respectively. This methodology will help to avoid the use of chemicals for neutralization and can be a useful entry point to establish sustainable wastewater management strategy in the developing countries. The results suggest the need for inclusion of the tested nine heavy metals in the Ethiopian standards for discharge from the distillery and domestic effluents.
Starting Page	1679
Ending Page	1688
Page Count	10
File Format	PDF
ISSN	17351472
Journal	International Journal of Environmental Science & Technology
Volume Number	14
Issue Number	8
e-ISSN	17352630
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-02-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Textile Ecotoxicology Wastewater Water Management Waste Water Technology Blending Aquatic Pollution Distillery Domestic Environment Water Pollution Control Ethiopia Environmental Chemistry Environmental Science and Engineering Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Environmental Engineering Agricultural and Biological Sciences

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