Constructed Wetland as a Leachate Treatment Option in Nepal

Abstract

Leachate is a complex and toxic liquid generated in a landfill site that is detrimental to the environment if not managed properly. Constructed wetland is considered as an environmentally friendly and low maintenance cost option for treating leachate. The performance of constructed wetland in the treatment of leachate depends on climatic condition, type of wetland and type of vegetation. Generally, it is observed that high content of organic waste generates leachate of high BOD concentration. Constructed wetland without pre-treatment and Phragmites australis as vegetation can be a possible option for treating leachate.