Aquifer storage and recovery

Aquifer Storage and Recovery (ASR) is a process that involves the storage of water in a well during times of surplus and the recovery of the water from the same well during times of need. This process is used to manage water resources and improve water supply reliability.

Overview

Aquifer storage and recovery (ASR) is a form of Managed Aquifer Recharge (MAR) that involves the direct injection of water into an aquifer for later recovery and use. The water is usually injected into the aquifer during periods of surplus, such as during the rainy season, and is then recovered during periods of need, such as during the dry season. The water can be stored in the aquifer for weeks, months, or even years, depending on the needs of the water management system.

Process

The process of ASR involves several steps. First, the water to be stored is treated to ensure it is of suitable quality for injection into the aquifer. The water is then injected into the aquifer through a well. The well is typically a vertical well, but it can also be a horizontal well or a series of wells. The water is stored in the aquifer until it is needed. When the water is needed, it is pumped out of the well and treated again if necessary before it is used.

Applications

ASR can be used in a variety of applications. It can be used to store surplus water from rainfall, surface water, or groundwater. It can also be used to store treated wastewater or desalinated water. ASR can be used to manage water resources in areas with variable rainfall or in areas with limited water resources. It can also be used to improve the reliability of water supply systems.

Benefits and Challenges

The benefits of ASR include the ability to store large amounts of water, the ability to manage water resources more effectively, and the ability to improve the reliability of water supply systems. However, there are also challenges associated with ASR. These include the need for suitable aquifers, the need for suitable water quality, and the need for effective water management systems.

See Also

• Water management
• Water supply
• Water treatment
• Desalination
• Wastewater treatment