Journal ArticleDOI
Evaluation of bank filtration as a pretreatment method for the provision of hygienically safe drinking water in Norway: results from monitoring at two full-scale sites
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TLDR
In this paper, the performance of bank filtration systems in cold-climate fluvial aquifers relying on recharge from humic-rich surface waters with moderate microbial contamination was evaluated.Abstract:
Two case studies were carried out in central Norway in order to assess the performance of bank filtration systems in cold-climate fluvial aquifers relying on recharge from humic-rich surface waters with moderate microbial contamination. Three municipal wells and two surface-water sources at operative bank filtration systems were monitored for naturally occurring bacteriophages, fecal indicators, natural organic matter (NOM) and physico-chemical water quality parameters during a 4-month period. Aquifer passage effectively reduced the microorganism and NOM concentrations at both study sites. Bacteriophages were detected in 13 of 16 (81%) surface-water samples and in 4 of 24 (17%) well-water samples, and underwent 3 ± 0.3 log10 reduction after 50–80-m filtration and 20–30 days of subsurface passage. NOM reductions (color: 74–97%; dissolved organic carbon: 54–80%; very hydrophobic acids: 70%) were similar to those achieved by conventional water-treatment processes and no further treatment was needed. Both groundwater dilution and sediment filtration contributed to the hygienic water quality improvements, but sediment filtration appeared to be the most important process with regard to microbial and NOM reductions. A strengths-weaknesses-opportunities-threats analysis showed that bank filtration technology has a high potential as a pretreatment method for the provision of hygienically safe drinking water in Norway.read more
Citations
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Journal ArticleDOI
Managed Aquifer Recharge (MAR) in Sustainable Urban Water Management
TL;DR: In this article, the authors draw on examples of the use of managed aquifer recharge (MAR) as an approach to support sustainable urban water management and show that MAR provides a means to recycle underutilized urban storm water and treated wastewater to maximize their water resource potential and to minimize any detrimental effects associated with their disposal.
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Managed aquifer recharge implementation criteria to achieve water sustainability.
TL;DR: In this article, the authors provide an overview of MAR types with a basic framework to select and implement specific MAR at a site based on water availability and quality, land use, source type, soil, and aquifer properties.
Journal ArticleDOI
Water supply safety of riverbank filtration wells under the impact of surface water-groundwater interaction: Evidence from long-term field pumping tests
TL;DR: The results of this study indicate that RBFWs can ensure a sustainable water supply of stable quality, which can also simplify the post-treatment processes of waterworks and reduce costs.
Journal ArticleDOI
Water Recycling via Aquifers for Sustainable Urban Water Quality Management: Current Status, Challenges and Opportunities
TL;DR: Managed aquifer recharge (MAR) is used worldwide in urban environments to replenish groundwater to provide a secure and sustainable supply of potable and non-potable water as discussed by the authors.
Journal ArticleDOI
The impact of well drawdowns on the mixing process of river water and groundwater and water quality in a riverside well field, Northeast China
TL;DR: Yuanzheng Zhai et al. as discussed by the authors proposed a method for ground water pollution control and remediation with the National Natural Science Foundation of China grant No. 41877174.
References
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Journal ArticleDOI
Adsorption and desorption of different organic matter fractions on iron oxide
TL;DR: In this paper, the competitive and fractional adsorption-desorption of NOM subcomponents were investigated in order to better predict NOM partitioning between the solution and solid phases and, therefore, the transport behavior of the NOM in the subsurface soil environment.
Journal ArticleDOI
An overview of the methods used in the characterisation of natural organic matter (NOM) in relation to drinking water treatment
Annu Matilainen,Egil T. Gjessing,Tanja Lahtinen,Leif Hed,Amit Bhatnagar,Mika Sillanpää,Mika Sillanpää +6 more
TL;DR: A review of the methods used for characterisation and quantification of NOM in relation to drinking water treatment can be found in this paper, where a number of methods have been proposed for NOM removal with varying degrees of success.
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Attenuation of groundwater pollution by bank filtration
Kevin M. Hiscock,Thomas Grischek +1 more
TL;DR: The success of bank filtration is dependent on the microbial activity and chemical transformations that are commonly enhanced in the colmation layer within the river bed compared to those that take place in surface or ground waters as discussed by the authors.
Journal ArticleDOI
Bacteriophages: Update on application as models for viruses in water
TL;DR: Since there is no direct correlation between numbers of phages and viruses, phages cannot to a meaningful extent be used to indicate numbers of viruses in polluted water, and using highly sensitive molecular techniques viruses have been detected in drinking water supplies which yielded negative results in conventional tests for phages.
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Removal of bulk dissolved organic carbon (DOC) and trace organic compounds by bank filtration and artificial recharge.
TL;DR: It was found that redox conditions and travel time significantly influence the DOC degradation kinetics and the efficiency of AOX and trace compound removal.