Prediction of Iron Release during Riverbank Filtration

Grischek, Thomas; Paufler, S.

doi:10.3390/w9050317

Cited by 30 publications

(21 citation statements)

References 14 publications

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“…At the same time, RBF is used for water quantity management. The interaction between surface water and groundwater (GW) prevents over-exploitation of the aquifer, salinisation by rising deep saline groundwater, and subsidence due to groundwater abstraction [4]. Against the background of the world's increasing demand for drinking water, RBF is also suitable as a low-cost treatment process with low technical requirements for developing countries [5].…”

Section: Introductionmentioning

confidence: 99%

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The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

Haas¹,

Opitz²,

Grischek

et al. 2018

Water

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Natural water treatment techniques combined with engineered solutions were investigated at demonstration sites in Europe within the AquaNES project. Ultrafiltration is well-established in water treatment, but is not feasible for many water utilities due to its high operational costs compared to conventional treatment. These differences in cost are caused by membrane fouling and the associated cleaning required. This study aims to assess the economic and energetic operation factors based on studies of an out/in ultrafiltration treatment plant for river water and bank filtrate. The fouling potential of both raw water sources was investigated as well as the quality of the resulting water. In addition, the results show the potential utility of a combined approach utilizing bank filtration followed by ultrafiltration in drinking water treatment. In a separate consideration of the treatment process, the water quality does not fulfill the requirements of the German drinking water ordinance. A new method for the removal of dissolved manganese from the bank filtrate is presented by inline electrolysis. While this improves water quality, this also has a significant influence on fouling potential and, thus, on operating costs of ultrafiltration. These aspects lead to a fundamental decision for operators to choose between more costly ultrafiltration with enhanced microbiological safety compared to cost-effective but less stringent drinking water treatment via open filtration.

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Section: Introductionmentioning

confidence: 99%

“…A schematic diagram of processes affecting water quality during riverbank filtration and groundwater (GW)[4].…”

mentioning

confidence: 99%

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

Haas¹,

Opitz²,

Grischek

et al. 2018

Water

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“…Earlier column tests and studies at bank infiltration sites (e.g., Diem et al 2013;Greskowiak et al 2006;Grischek and Paufler 2017;Henzler et al 2016;Massmann et al 2006;Sharma et al 2012) have demonstrated an elevated DO consumption early along the infiltration flow path. The amount of DO consumption is temperature dependent, typically leading to anoxic conditions in the summer and aerobic conditions in the winter in the aquifer.…”

Section: Dissolved Oxygenmentioning

confidence: 99%

Water quality changes and organic matter removal using natural bank infiltration at a boreal lake in Finland

Jylhä-Ollila

Laine-Kaulio

Niinikoski-Fusswinkel

et al. 2020

Hydrogeol J

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Managed aquifer recharge (MAR) refers to intentional infiltration of surface water to an aquifer for facilitating natural water treatment and storage. MAR is often used as a treatment to remove natural organic matter from water in drinking water production. The sustainability of MAR depends on how the aquifer capacity to remove organic matter will evolve over the long term. This report explores the behavior of MAR systems by using a natural lake-aquifer system as a surrogate. Natural infiltration of lake water to groundwater has been going on for millennia at the research site in Finland chosen for this study. According to the measurements, the mean concentration of total organic carbon (TOC) in lake water was 3.0 mg/L. Within the distance of 3 m from the lake bank (retention time 7-15 days), already 46% of TOC was removed. At greater distances along the flow paths within the aquifer, 80-90% of TOC was removed. The observed TOC removal in the aquifer was slightly higher than the reported values at MAR sites, indicating that MAR can be an effective solution to the problem of removing natural organic matter in the long term. Signs of accumulation of organic matter were not observed in the aquifer, which suggests that biodegradation was the main removal method, and the role of sorption was minor. Several processes had an impact on oxygen levels in the aquifer, which led to spatial and seasonal changes in the redox conditions and in the iron and manganese concentrations in groundwater.

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“…For example, to be able to predict the need for post-treatment to remove iron or manganese mobilized during riverbank filtration, insight is required in what determines the development of iron and manganese concentrations during operation (e.g., [27][28][29]). Such insight can be supported by field monitoring, e.g., by using isotopes to assess the relative contribution of different water types to the recovered water in mixed source MAR systems [20], reveal the mobilization of chromium during infiltration of a desert dune sand aquifer [2], to assess retention times [30], or to study factors that affect clogging by, e.g., air bubbles [19].…”

Section: Effective and Reliable Mar Operationmentioning

confidence: 99%

“…In addition to effective infiltration, an important aspect of the performance of MAR is the extent to which water quality improves or deteriorates during subsurface passage. The release of iron and manganese commonly occurs (e.g., [29]), resulting in post-treatment requirements and risks of abstraction well clogging. Therefore, the application of subsurface iron removal (SIR) is a promising technology to be combined with MAR [6,35].…”

Section: Enhancing the Performance Of Marmentioning

confidence: 99%

Water Quality Considerations on the Rise as the Use of Managed Aquifer Recharge Systems Widens

Hartog

Stuyfzand

2017

Water

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Managed Aquifer Recharge (MAR) is a promising method of increasing water availability in water stressed areas by subsurface infiltration and storage, to overcome periods of drought, and to stabilize or even reverse salinization of coastal aquifers. Moreover, MAR could be a key technique in making alternative water resources available, such as reuse of communal effluents for agriculture, industry and even indirect potable reuse. As exemplified by the papers in this Special Issue, consideration of water quality plays a major role in developing the full potential for MAR application, ranging from the improvement of water quality to operational issues (e.g., well clogging) or sustainability concerns (e.g., infiltration of treated waste water). With the application of MAR expanding into a wider range of conditions, from deserts to urban and coastal areas, and purposes, from large scale strategic storage of desalinated water and the reuse of waste water, the importance of these considerations are on the rise. Addressing these appropriately will contribute to a greater understanding, operational reliability and acceptance of MAR applications, and lead to a range of engineered MAR systems that help increase their effectiveness to help secure the availability of water at the desired quality for the future.

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Prediction of Iron Release during Riverbank Filtration

Cited by 30 publications

References 14 publications

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

Water quality changes and organic matter removal using natural bank infiltration at a boreal lake in Finland

Water Quality Considerations on the Rise as the Use of Managed Aquifer Recharge Systems Widens

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