10 Facts About Constructed wetland

Constructed wetland is an artificial wetland to treat sewage, greywater, stormwater runoff or industrial wastewater.

The design of the constructed wetland has to be adjusted according to the type of wastewater to be treated.

Constructed wetland is an engineered sequence of water bodies designed to treat wastewater or storm water runoff.

Vegetation in a Constructed wetland provides a substrate upon which microorganisms can grow as they break down organic materials.

Constructed wetland systems are highly controlled environments that intend to mimic the occurrences of soil, flora, and microorganisms in natural wetlands to aid in treating wastewater.

Theoretically, wastewater treatment within a constructed wetland occurs as it passes through the wetland medium and the plant rhizosphere.

Removal in a properly designed and operated free water surface flow Constructed wetland is reported to be less than 1 to 2 log10 for bacteria, less than 1 to 2 log10 for viruses, 1 to 2 log10 for protozoa, and 1 to 2 log10 for helminths.

In cases of water loss, a vertical flow constructed wetland is preferable to a horizontal because of an unsaturated upper layer and a shorter retention time, although vertical flow systems are more dependent on an external energy source.

Urban applications the area requirement of a subsurface flow constructed wetland might be a limiting factor compared to conventional municipal wastewater treatment plants.

An integrated constructed wetland is an unlined free surface flow constructed wetland with emergent vegetated areas and local soil material.