Over 130 years of experience with Riverbank Filtration in Düsseldorf, Germany

Eckert, Paul; Irmscher, Rudolf

doi:10.2166/aqua.2006.0012

Cited by 54 publications

(38 citation statements)

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“…Water derived from collector wells is generally cleaner 40 than that extracted from the river directly (Eckert and Irmscher, 2006) and can reduce further 41 treatment costs. RBF systems are commonplace for public water supply in many countries.…”

Section: Introduction 38mentioning

confidence: 99%

Impacts of extreme flooding on riverbank filtration water quality

Ascott

Lapworth

Gooddy

et al. 2016

Science of The Total Environment

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11Riverbank filtration schemes form a significant component of public water treatment processes on a 12 global level. Understanding the resilience and water quality recovery of these systems following 13 severe flooding is critical for effective water resources management under potential future climate 14 change. This paper assesses the impact of floodplain inundation on the water quality of a shallow 15 aquifer riverbank filtration system and how water quality recovers following an extreme (1 in 17 16 year, duration > 70 days, 7 day inundation) flood event. During the inundation event, riverbank 17 filtrate water quality is dominated by rapid direct recharge and floodwater infiltration (high fraction 18 of surface water, dissolved organic carbon (DOC) > 140% baseline values, > 1 log increase in micro-19 organic contaminants, microbial detects and turbidity, low specific electrical conductivity (SEC) < 20 90% baseline, high dissolved oxygen (DO) > 400% baseline). A rapid recovery is observed in water 21 quality with most floodwater impacts only observed for 2 -3 weeks after the flooding event and a 22 *Revised manuscript with no changes marked Click here to view linked References 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 2 return to normal groundwater conditions within 6 weeks (lower fraction of surface water, higher 23 SEC, lower DOC, organic and microbial detects, DO). Recovery rates are constrained by the 24 hydrogeological site setting, the abstraction regime and the water quality trends at site boundary 25 conditions. In this case, increased abstraction rates and a high transmissivity aquifer facilitate rapid 26 water quality recoveries, with longer term trends controlled by background river and groundwater 27 qualities. Temporary reductions in abstraction rates appear to slow water quality recoveries. 28Flexible operating regimes such as the one implemented at this study site are likely to be required if 29 shallow aquifer riverbank filtration systems are to be resilient to future inundation events. 30Development of a conceptual understanding of hydrochemical boundaries and site hydrogeology 31 through monitoring is required to assess the suitability of a prospective riverbank filtration site.

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Section: Introduction 38mentioning

confidence: 99%

Impacts of extreme flooding on riverbank filtration water quality

Ascott

Lapworth

Gooddy

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…Bank filtration is a technique that induces the infiltration of surface water into the aquifer by strategically constructing wells parallel to surface water bodies. In many European cities this technique is used for drinking water production, e.g., in Berlin [3] and Düsseldorf [4], Germany, and Vienna, Austria [5]. Besides reducing turbidity, it can help to remove algal toxins [6], bulk dissolved organic carbon [7], and microorganisms [8,9] from the surface water during the underground passage.…”

Section: Introductionmentioning

confidence: 99%

“…Geosciences 2017, 7, 48 3 of 16 Yet crucial questions concerning the cause and development of NH 4 + concentrations at the field site remain unanswered. The mixing of infiltrating NH 4 + -rich river water with ambient groundwater would lead to dilution, an effect that could be used to control NH 4 + concentrations in the well field by adjusting pumping schemes.…”

Section: Introductionmentioning

confidence: 99%

“…Simple numerical models can help to estimate the influence of different groundwater flow conditions in the well field and identify the data gaps for further research. The objectives of this modeling study, therefore, are (1) to investigate the possible inflow of groundwater from the western side beneath the river, and (2) to decide whether the production wells draw shares of ambient groundwater from the eastern areas of the floodplain where the groundwater NH 4 + concentrations were reported to be low [15]. Using the model outputs, it is possible to (3) evaluate the results of two 1D reactive transport models, which were set-up to obtain an understanding of the order of magnitude of the decontamination period.…”

Section: Introductionmentioning

confidence: 99%

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Sewage-Borne Ammonium at a River Bank Filtration Site in Central Delhi, India: Simplified Flow and Reactive Transport Modeling to Support Decision-Making about Water Management Strategies

et al. 2017

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Abstract:In the Indian metropolis of Delhi, the Yamuna River is highly influenced by sewage water, which has led to elevated ammonium (NH 4 + ) concentrations up to 20 mg/L in the river water during 2012-2013. Large drinking water production wells located in the alluvial aquifer draw high shares of bank filtrate. Due to the infiltrating river water, the raw water NH 4 + concentrations in some wells exceed the threshold value of 0.5 mg/L ammonia-N of the Indian drinking water specifications, making the water unfit for human consumption without prior treatment. However, to meet the city's growing water demand, it might be advantageous to consider the long-term use of the well field. This requires the development of an adapted post-treatment unit in concert with an adjusted well field management. To better understand the groundwater dynamics and contamination and decontamination times at the well field, a theoretical modeling study has been conducted. The results of 2D numerical modeling reveal that the groundwater flux beneath the river is negligible because of the aquifer and river geometry, indicating that infiltrating river water is not diluted by the ambient groundwater. Increasing the water abstraction in the wells closest to the river would result in a larger share of bank filtrate and a decreasing groundwater table decline. Simplified 1D reactive transport models set up for a distance of 500 m (transect from the riverbank to the first production well) showed that the NH 4 + contamination will prevail for the coming decades. Different lithological units of the aquifer (sand and kankar-a sediment containing calcareous nodules) have a strong influence on the respective contamination and decontamination periods, as the retardation of NH 4 + is higher in the kankar than in the sand layer. Although this simplified approach does not allow for a quantification of processes, it can support decision-making about a possible future use of the well field and point to associated research needs.

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“…BF (river or lake) has been practiced as a method of "abstraction" of water from surface water sources for more than 100 years (Eckert & Irmscher, 2006). ARR has been employed using many techniques (infiltration ponds, dug wells, trenches, vadose zone wells and direct injection wells) mainly for replenishment of groundwater resources.…”

Section: Introductionmentioning

confidence: 99%