A rock-plant filter, also called constructed wetland, is a term applied to a system designed to accomplish specific treatment tasks for wastewater, mimicking natural wetlands. Natural wetlands are environments where plant roots are submerged in water or saturated soil all or most of the time.
They have several unique and desirable properties. Natural wetlands allow flows to expand and contract while removing and assimilating nutrients and other contaminants. Wetlands are sometimes referred to as the purifier in the environment.
Rock-plant filters have been developed, researched and promoted to treat wastewater. These systems include areas, usually lined with impermeable materials, where wetland plants are grown in wastewater. Since about 1980, they have received
attention as a viable method for treatment of both municipal and industrial wastewaters and for remediation of contaminated sites. Wastewater supplied to these wetlands has previously been treated by wastewater ponds, extended aeration,
activated sludge, or some other method to stabilize the wastewater. The wetland provides added treatment to improve quality of the effluent by removing nutrients and reducing suspended solids.
Download Rock Plant Filter Design for Home Wastewater.pdf
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Submitted by acrobat on Thu, 03/06/2008 - 10:12.
