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Pollution control of groundwater within an industrial zone (Skikda, Algeria)

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Watershed ManWatershed Management to Meet Water Quality Standards and TMDLS (Total Maximum Daily Load) Proceedings of the 10-14 March 2007, San Antonio, Texas  701P0207.(doi:10.13031/2013.22452)
Authors:   Sofiane / Labar, Azzedine / Hani, Colin / Cunningham, Abedelkader Younsi
Keywords:   Keywords: groundwater, pollution, effluents, Coastal aquifer, Northeast region, Algeria

Contamination of groundwater due to industrial and waste management activity is therefore of great concern. In this study the physico-chemical characteristics and the nature and extent groundwater contamination from industrial effluents was examined. Groundwater in the study area was shallow (0.8 - 7 m), found in the relatively permeable miopliocene alluviums comprised of sand and gravels. To evaluate groundwater pollution due to this industrial effluent, piezometric level and physico-chemical analyses have been monitored for eight months using 17 piezometers. The industrial effluents were sampled from a drainage channel within the industrial zone. The average results of physico-chemical analyses (Dissolved oxygen, BOD5, COD, PO4, TSS, Total Hydrocarbons and some metals) showed an important qualitative degradation of the groundwater, especially in the parts situated in the down gradient area and in direct proximity of the drainage channel. Key factors influencing the extent of groundwater contamination include the depth of the water table, permeability of the soil and therefore infiltration rate. In order to prevent further deterioration of groundwater quality, effluent must be transported via pipes or impervious channels for treatment prior to discharge. The treatment of water polluted with crude oil and toxic metals can be efficiently carried out by bioremediation means of a constructed wetland with a proper size and located in regions with suitable geological and hydrogeological conditions.

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