Plant Diversity in a Constructed Wetland for Pollutant Parameter Processing on Leachate: A Review
Isni Arliyani, Bieby Voijant Tangahu, Sarwoko Mangkoedihardjo
Abstract
The increase in urban solid waste has become a massive burden on society resulting in the environmental and economic problems, particularly in terms of poor solid waste management Ninety-five percent of urban solid waste worldwide is disposed of in landfills Landfills provoke several risks, as wastes may release harmful elements into the environment. The leachate from landfill remains a critical problem, because it may pose a threats to land, surface water, and groundwater Factors such as area conditions, age, type of waste, and operation of the landfill can vary the content of the landfill Countries with tropical climate produce more organic wastes The content of organic substance in wastewater is represented by the values of Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD). The BOD and COD values are used to determine the degradation rate of landfill leachate The values of BOD/COD leachate ratio in tropical regions are 0.03-0.74 higher than in other regions. In general, the BOD/ COD ratio values in tropical regions are BOD> 100 g/m 3 and COD> 500 g/m 3 in landfill leachate.