Failures in constructed wetlands (natural wastewater treatment systems)

Gökalp Z. , Karaman S.

3rd International Conference on Engineering and Natural Sciences, Budapest, Hungary, 3 - 07 May 2017, vol.2, no.2, pp.1196-1202

  • Publication Type: Conference Paper / Full Text
  • Volume: 2
  • City: Budapest
  • Country: Hungary
  • Page Numbers: pp.1196-1202


Natural treatment systems, so called as “constructed wetlands” are artificial domestic wastewater treatments systems commonly used in rural sections of the country. Constructed wetlands with their low construction, operation and maintenance costs, low energy demands, simple operation and low sludge generation are preferred as an alternative to conventional treatment systems. These systems imitate natural wetlands in specially designed basins including soil, plant and microorganisms to remove the pollutants from wastewaters. These systems are designed and constructed based on various criteria. However, failures are also common in these systems when the design principles were not obeyed fully. Failures are usually observed because of improper site selection, substrate clogging, leakage through the compacted clay liner and sloped sides and various other improper design practices. In present study, common failures in constructed wetlands were assessed and solutions were proposed to overcome such failures.