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Green filter area

Green filter areas are land application system, constructed to provide a buffer or pollution filter between industrial operations, roads, public spaces or walkways. Different typologies of vegetation have different performances and can be combined with solid barriers.

Green Filter area in Colombia

A specific application of green filter is used for treating water (wastewater). It consists of a plot area, sized according to the influent to be treated, which has forests installed and is irrigated with wastewater. The residual water partially evaporates and the rest is taken up by the roots of trees and filtered through the soil. Before application to the soil, it is desirable to introduce a primary treatment system, to remove coarse solids, sand, grease and solids. However, these systems provide more than just simple purification, because while treating the water, we are also producing biomass with high economic value.

Land Application Systems are considered a reliable, robust and low maintenance technology. This, together with the moderate cost of implementation, makes Land Application Systems a very competitive technology for treating wastewater from small towns or isolated areas.

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CARTIF
Resilient Cities Network

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Circular economyClimate resilienceGreen areasNature based solutionsWater
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