Effectiveness of Bank Filtration for Water Supply in Arid Climates

Effectiveness of Bank Filtration for Water Supply in Arid Climates
Author: Ahmed Ragab Abdelrady Mahmoud
Publsiher: CRC Press
Total Pages: 223
Release: 2021-02-25
Genre: Photography
ISBN: 9781000368086

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In many developing countries, water demand is increasing while surface- and groundwater resources are threatened by pollution and overexploitation. Hence, a more sustainable approach to water resources management and water treatment is required. In this capacity, bank filtration is a natural treatment process that makes use of the storage and contaminant attenuation capacity of natural soil/rock. However, BF is site-specific and a significant knowledge gap exists regarding the design and management of bank filtration systems, particularly in developing countries. This research aimed to address these gaps and contribute to the transfer of bank filtration to developing countries. This study comprised both column and batch laboratory-scale experiments to determine the effect of environmental variables such as temperature, raw water organic composition and redox conditions on the removal of chemical pollutants such as organic matter, micro-pollutants and heavy metals as well as the mobility of iron, manganese and arsenic under anaerobic conditions. Ultimately, the effectiveness of BF for supplying high drinking water quality was assessed in a case study in Egypt. The study showed that more than 80% of biodegradable organic matter was removed during infiltration at temperatures between 20 and 30 °C. However, humic compounds enriched during BF, required post-treatment. Moreover, high humic content of infiltrating water reduced the removal of heavy metal and promoted the release of metal (loids) into the infiltrating water, rendering it more feasible to install BF wells within surface water systems with low levels of organic matter. Moderately-hydrophobic organic micropollutants were most persistent and required infiltration times longer than 30 days for complete elimination even at high temperatures (>20 °C). Finally, design parameters such as the number of infiltration wells should be configured to minimise the proportion of polluted groundwater in the pumped water. Overall, this study provides insight into the effectiveness of BF in removing chemical pollutants from surface water and proposes guidelines for the successful application of BF in developing countries where arid conditions and high temperatures prevail.

Riverbank Filtration

Riverbank Filtration
Author: C. Ray,G. Melin,R.B. Linsky
Publsiher: Springer Science & Business Media
Total Pages: 366
Release: 2006-04-11
Genre: Technology & Engineering
ISBN: 9780306481543

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Chittaranjan Ray, Ph. D. , P. E. University of Hawaii at Mãnoa Honolulu, Hawaii, United States Jürgen Schubert, M. Sc. Stadtwerke Düsseldorf AG Düsseldorf, Germany Ronald B. Linsky National Water Research Institute Fountain Valley, California, United States Gina Melin National Water Research Institute Fountain Valley, California, United States 1. What is Riverbank Filtration? The purpose ofthis book is to show that riverbank filtration (RBF) isa low-cost and efficient alternative water treatment for drinking-water applications. There are two immediate benefits to the increased use of RBF: Minimized need for adding chemicals like disinfectants and coagulants to surface water to control pathogens. Decreased costs to the community without increased risk to human health. Butwhat,exactly, isRBF? In humid regions, river water naturally percolates through the ground into aquifers (which are layers of sand and gravel that contain water underground) during high-flow conditions. In arid regions, most rivers lose flow, and the percolating water passes through soil and aquifer material until it reaches the water table. During these percolation processes, potential contaminants present in river water are filtered and attenuated. If there are no other contaminants present in the aquifer or ifthe respective contaminants are present at lower concentrations, the quality of water in the aquifer can be ofhigher quality than that found in theriver. In RBF, production wells — which are placed near the banks ofrivers —pump large quantities ofwater.

Water Management Purificaton and Conservation in Arid Climates Volume II

Water Management  Purificaton  and Conservation in Arid Climates  Volume II
Author: Mattheus F. A. Goosen,Walid H. Shayya
Publsiher: CRC Press
Total Pages: 371
Release: 1999-09-28
Genre: Technology & Engineering
ISBN: 9781482278828

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This three volume series presents a broad and integrated approach to water management, purification, and conservation in arid climates. Volume one includes an introductory chapter on water problems and water resources in arid climates followed by specific chapters covering various aspects of water management. Volumes two and three deal with water p

Riverbank Filtration Understanding Contaminant Biogeochemistry and Pathogen Removal

Riverbank Filtration  Understanding Contaminant Biogeochemistry and Pathogen Removal
Author: C. Ray
Publsiher: Springer Science & Business Media
Total Pages: 276
Release: 2002-11-30
Genre: Science
ISBN: 1402009542

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Riverbank filtration is widely used in Europe and to some extent in the United States for the public water supply. It is a cost-effective and realisable treatment technology in which horizontal and vertical wells pump a mixture of ground water and induced surface water from a river. This book describes the biogeochemical issues involved in contaminant removal from surface water and the mechanisms of pathogen removal. Specifically, the following three points are considered: *The role of hydrogeological and well construction factors in the development of redox zones at bank filtration sites and the resulting impacts on contaminant removal. *The mechanisms of pathogen removal, including the processes, colloid filtration, die-away, decay, and predation. *The status of riverbank filtration processes in NATO partner countries.

Water Management Purificaton and Conservation in Arid Climates

Water Management  Purificaton  and Conservation in Arid Climates
Author: Mattheus F. A. Goosen,Walid H. Shayya
Publsiher: CRC Press
Total Pages: 374
Release: 1999-09-28
Genre: Technology & Engineering
ISBN: 1566767709

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This three volume series presents a broad and integrated approach to water management, purification, and conservation in arid climates. Volume one includes an introductory chapter on water problems and water resources in arid climates followed by specific chapters covering various aspects of water management. Volumes two and three deal with water purification and water conservation, respectively. Many textbooks on water issues normally deal with only one of these areas. This series covers all three areas with an emphasis on the problems faced by arid regions. The three volume series will appeal to industry specialists in desalination and wastewater treatment, irrigation engineers, graduate and undergraduate students in hydrology, water management and conservation professionals, government personnel involved in water resources development, decision makers, environmentalists, employees of the petrochemical industry, and individuals wishing to specialize in water management, purification and conservation.

Efficiency of Bank Filtration and Post Treatment

Efficiency of Bank Filtration and Post Treatment
Author: Thomas Grischek,Chittaranjan Ray
Publsiher: MDPI
Total Pages: 354
Release: 2019-08-08
Genre: Technology & Engineering
ISBN: 9783039213054

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This book is a printed edition of the Special Issue Efficiency of Bank Filtration and Post-Treatment that was published in Water

Riverbank Filtration for Water Security in Desert Countries

Riverbank Filtration for Water Security in Desert Countries
Author: Chittaranjan Ray,Mohamed Shamrukh
Publsiher: Springer Science & Business Media
Total Pages: 313
Release: 2010-11-17
Genre: Science
ISBN: 9789400700390

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Riverbank filtration is a low cost, yet efficient water treatment technology. It has most potential to provide safe drinking water to large cities located along rivers or lakes. In particular, it is ideal for large population centres in developing countries, where the cost of building extensive treatment facilities is prohibitive. Water filtration can be successfully implemented using naturally occurring sand and gravel along the river/lake banks. The cost of water produced by this means is much lower than that of water treated in conventional treatment plants. Authored by a multi-disciplinary team of experts, this volume addresses the scientific basis of the filtration process, and also numerous topics of importance for the planning, technical realization, and security of such plants. Their application for the removal of relevant chemical pollutants and a variety of pathogens is analysed in detail.

Artificial Recharge of Groundwater

Artificial Recharge of Groundwater
Author: Jos H. Peters,et al
Publsiher: CRC Press
Total Pages: 493
Release: 2020-08-26
Genre: Technology & Engineering
ISBN: 9781000100259

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This text covers the proceedings of the third International Symposium - TISAR 98, held in Amsterdam. Topics include: basin recharge; water management in arid regions; behaviour of pollutants; bank, basin, well and other types of recharge; and storage and recovery efficiency.