Paper Title
Effectiveness of Ornamental Plants and Design Area of Domestic Wastewater Treatment in Constructed Wetland Technology

Domestic wastewater is one of the a major factor which cause water pollution in Indonesia. Therefore, it needs to be done by using the significant measures to those issues. Constructed wetlands technology with subsurface flow type can be a good alternative as a solution to overcome wastewater pollution because its an environmentally friendly. Constructed wetlands use the plant as a waste treatment. The objectives of this study is to review the effectiveness of Canna indica and Heliconia spathocircinata plant in decreasing the amount of pollutants and analyze the adequacy of constructed wetlands area for household scale. The experimental method is using a laboratory test to measured the parameters. Furthermore, to estimate the adequacy of constructed wetlands area is using the Reed method. The results indicate that Canna indica and Heliconia spathocircinata are able to reduce the amounts of pollutants which exist in domestic wastewater. The decreasement of pollutants occurred in all treatments. The reduction also occurred in the control where there is no plants in the reactor. Furthermore, the estimated adequacy of constructed wetlands area based on the content of BOD and it indicates that the more wider of the BOD content then the more of the constructed wetlands needed. Keywords- Constructed wetland technology, domestic wastewater, Canna indica, Heliconia spathocircinata, Reed method