5.7 Conclusion
Constructed wetlands have been used for wastewater treatment for nearly 40 years and have become a widely accepted technology available to deal with both point and non-point sources of water pollution. They offer a land-intensive, low-energy, and low-operational-requirements alternative to conventional treatment systems, especially for small communities and remote locations. Constructed wetlands also prove to be affordable tools for wastewater reclamation, especially in arid and semi-arid areas. Although the emission of N2O and CH4 from constructed wetlands was found to be relatively high, their global influence is probably not significant.
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Vymazal, J., Greenway, M., Tonderski, K., Brix, H., Mander, Ü. (2006). Constructed Wetlands for Wastewater Treatment. In: Verhoeven, J.T.A., Beltman, B., Bobbink, R., Whigham, D.F. (eds) Wetlands and Natural Resource Management. Ecological Studies, vol 190. Springer, Berlin, Heidelberg . https://doi.org/10.1007/978-3-540-33187-2_5
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