Treatment Wetlands – Sustainable Sanitation Practice, July 2012

Treatment Wetlands – Sustainable Sanitation Practice, July 2012 

Natural wetlands have been used for wastewater treatment for centuries. In many cases, however, the reasoning behind this use was disposal, rather than treatment and the wetland simply served as a convenient recipient that was closer than the nearest river or other waterway. Constructed treatment wetlands are engineered systems designed and constructed to utilize the natural processes involving wetland vegetation, soils, and their associated microbial assemblages to assist in treating water. They are designed to take advantage of many of the same processes that occur in natural wetlands, but do so within a more controlled environment.

Constructed treatment wetlands (TWs) are a simple technology in construction as well as in operation and maintenance. They have a high buffer capacity for hydraulic and organic load fluctuations as well as a high robustness and process
stability. TWs are therefore a suitable technological solution for small villages and single households and are becoming more and more popular all around the world for treating different types of water. Currently, the estimated number of CW systems in Austria is more than 3000.

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