Underdrain & Recovery Wells System

An Underdrain System provides a viable alternative towards effluent recovery especially when it comes to wastewater reuse for irrigation. The system basically is needed to recover back percolate and more important to prevent buildup of mound. In fact the main idea is to achieve the right quality of collected renovated water and thus it is important that the right depth of the underdrain is properly planned out and constructed with correct spacing between each unit.

The most commonly used type of material for the construction of underdrain is usually plastic, clay tiles or either concrete. With tile drains, trench will be dug and usually coarse sands are added as another layer to prevent silts from getting trapped between the tile lines. For underdrains that are constructed using plastic, it maybe necessary to have a fiberglass type of filter socks.

Other than underdrain system, Recovery Wells can also be selected to prevent the nutrient rich water from escaping underground. In fact, a well-designed system will be able to recover most of the water and contain it within a certain area and therefore factors related to the depth, typical flowrate and overall spacing must be properly explored in details. Other than what is mentioned here, sometimes variables related to soil condition should also be taken into consideration as well. Finally what is important is that the system must be able to support and serve the purpose of preapplication treatment processes.

Similar topic and further details related to wastewater management: Treatment Lagoons

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