To estimate the performance of ASR

ASR Performance Assessor - Start



Aquifer Storage and Recovery (ASR) is defined as the injection of freshwater surpluses in aquifers using wells, followed by recovery in times of demand using the same well. It can be an efficient technique to store freshwater surpluses for times of demand. However, in brackish-saline aquifers the density-driven flow can result in limited recoverability of freshwater: injected freshwater is pushed up towards the top of the aquifer (buoyancy effect) and brackish/saline water eventually enters the lower well section.

The recovery efficiency (RE) – the part of the recovered injected water that is of satisfactory quality – will therefore be lower than 100% in brackish/saline aquifers. It is of utmost importance to have an indication of this RE prior to construction/planning of any ASR system, since it determines the water supply and business case of the system. The RE, however, depends on the aquifer properties (such as thickness, permeability, salinity) and operational parameter (pumping rates, duration of injection/storage/recovery periods).

Benefits

This tool can quickly estimate the performance of ASR, based on commonly available hydrogeological and operational parameters a priori. It is therefore a vital decision-support tool in the field of ASR. Typically, unviable set-ups will be recognized efficiently and can be avoided, so that more focus can be given to promising cases.


Tool Expert(s)

Koen Zuurbier

Koen Zuurbier

Researcher, KWR

+31 (0)30 60 69 666
koen.zuurbier@kwrwater.nl

Aquifer Storage and Recovery (ASR) can be an efficient technique to store freshwater surpluses for times of demand. However, in brackish-saline aquifers the density-driven flow can result in limited recoverability of freshwater. This tool can quickly estimate the performance of ASR a priori, so that unviable ASR systems are avoided.

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