Constructed Wetlands for Wastewater Treatment Including Those Used for Fast-Growing Timber

ABSTRACT Wastewater volume growth is a challenge for most of developing countries and there are several approaches to resolve the problem. But one of the most efficient wastewater treatment method is constructed wetland. This technology clones the processes in a natural ecosystem. The constructed wetland serves habitats for the wild fauna and its substrate takes in similar microbial communities as a natural wetland does. The constructed wetlands are efficient in treating a large scale of xenobiotics such as pesticides or drugs because of a longer water cycle in the basin. By the way this technology is cheaper than conventional analogues such as aeration tanks.The constructed wetland forms a semi-natural microbial environment that contributes self-purification processes in a recipient waterbody. The treated water issued from the constructed wetland can go directly to a river or can be reused in forestry irrigation. Such the systems constructed wetland-fast growing timber plantation have been experienced. This kind of wastewater recycling is likely for the ASEAN countries for climate and economical reasons