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Storage

The moment of water supply and demand generally not matches perfectly. To make the water from a period of abundance available during scarcity, the collected water should be stored. Dependent on the location, the water can be stored underground, in a rainwater reservoir or by optimizing tile drainage.  

Subsurface storage of freshwater in a salt environment 

At locations where the groundwater is saline the abundance of fresh water is often limiting for the crop yield or the industrial production. At these locations the creation of a fresh water bubble within the further saline groundwater may be a very beneficial option. Freshwater can be infiltrated beneath an impermeable layer in (salt) groundwater. The created underground freshwater bubble  functions as the new, reliable freshwater source, from which the water can be extracted when needed. A large advantage is that subsurface storage of rainwater uses minimal space with maximum returns.

Three designs of subsurface storage are possible:

The single variant includes 1 infiltration and extraction well. The freshwater bubble is created at an optimal depth of 10 to 30 meters, deeper is possible as well. Collected freshwater is infiltrated in the middle of the bubble, whereby the salt or brackish groundwater is diverged. Water is extracted from this source in times of demand and drought.  

The multiple variant is focussed on purification of freshwater and minimizing crop diseases. This variant includes multiple wells, from which at least 1 infiltration and 1 abstraction well. Based on the location specific situation, the exact amount of wells is defined. This design results in a ‘soil passage’ through which the water flows from infiltration to abstraction well. The soil passage is used for decomposition of pathogens in the water.  

Subsurface storage of freshwater has multiple benefits:

• Developing your own freshwater source;
• Availability of irrigation water at any time;
• Decomposition of crop diseases;
• Optimising the water quality;
• Minimal space usage with maximum returns.

Rainwater reservoir 

If subsurface storage is not possible or desired, the water can be stored in an aboveground rainwater reservoir. The reservoirs will be completely customized, meeting your requirements in every circumstance. After storage the water is available for crop irrigation and industrial application.

Storage of freshwater in a rainwater reservoir has the following benefits:

• Developing your own freshwater source;
• Availability of irrigation water at any time. 

Level controlled tile drainage 

An agricultural water system often is regulated with the use of tile drainage. Traditional tile drainage is focused on discharging and regulating the groundwater level with the purpose of preventing crop damage by wet conditions. Though, tile drainage is able to serve more goals. E.g., it is possible to push salt groundwater away and regulate the soil moisture balance and thereby avoiding salinization and drought damage.

DWS offers a variant of level controlled tile drainage with the goal of avoiding moisture damage, drought damage and salt damage. Sufficient draining reduces the risk of wet damage and a sufficient freshwater availability reduces the risk of drought and salt damage. DWS creates optimal growth conditions, in the current situation and for the future. In other words, with DWS you have a future proof draining system.

For optimal user options, the system can be equipped with telemetric devices. This allows you to, remotely, check the groundwater level, salinity and discharge. Besides, you are able to influence  the groundwater level in the plot.