Evaporation Bed

Evapotranspiration beds are an alternative secondary treatment solution for greywater, pre-treated effluents from septic tanks, anal cleansing water or urine from urine diversion toilets in areas with high groundwater tables, or with soils that prevent wastewater percolation and where the productive reuse of these wastewater flowstreams is not a preferred option. The respective wastewater effluents are discharged into sealed up receptacles where the water evaporates from the soil or transpires from the plants growing there in a process called evapotranspiration. The dissolved organic matter is removed by bacteria and the remaining nutrients are taken up by plants.

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