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Water Science & Technology Vol 65 No 12 pp 2206–2212 © IWA Publishing 2012 doi:10.2166/wst.2012.129 The effect of certain biochemical factors on well clogging under suboxic and mildly anoxic conditionsM. Dimkić, M. Pušić, V. Obradović and S. KovačevićJaroslav Černi Institute for the Development of Water Resources, Jaroslava Černog 80, 12226 Pinosava, Belgrade, SerbiaDepartment of Hydrogeology, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia E-mail: mpusic@ptt.rs Department of Environmental Engineering and Occupational Safety and Health, Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia ABSTRACT Research conducted at the Belgrade Groundwater Source in Serbia has shown that significant well screen clogging processes take place under reduced oxic and initial anoxic conditions. Criteria for the prevention, or deceleration, of clogging are becoming more relevant to well ageing, compared with classical, mechanical clogging criteria and the permissible entrance velocities derived from them. The research project was later expanded to encompass other alluvial sources, which feature distinct oxic conditions. This paper presents some of the outcomes of this project, which shed light on the correlation between certain important indicators of well screen clogging (such as the redox potential and iron concentration) and the rate of increase in local hydraulic resistance at the wells. Keywords: ageing indicators; ageing rate; groundwater; hydraulic resistance; radial well; well ageing eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00) All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment |
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