Indonesia Conference Directory

In Indonesia, especially in urban area such as Jakarta, it is very common that greywater generated from households run off into drainage system. The greywater that mixed together with rain water will flow onto river. Increasing population means increasing in households as well as greywater generated, that become serious problem when greywater becomes dominant in drainage system. To minimize the pollution from greywater in river stream, it was used the constructed wetland with subsurface system in riverbanks of Ciliwung river. The research was conducted using the vetiver (Vetiveria zizanioides) planted in the subsurface-constructed wetland to decrease the parameter of ammonia and phosphate from greywater. The aim of the research is to determine the removal efficiency of the parameters from greywater using the wetland located in Srengseng Sawah subdistrict, South Jakarta City. With the residence time of 2 days, the parameter of ammonia could removed 70% while for phosphate parameter is 65%. To reach the quality standards, it is suggested to add the pre-treatment of aeration for the wetland.