Constructed Wetland of Lepironia Articulata for Household Greywater Treatment

摘要

The release of domestic greywater from various sources can cause contamination of water bodies. In this study, a pretreatment system and mini wetland were constructed at village dwelling for greywater treatment. The main purpose of this study was to investigate the greywater loading characteristics, provide appropriate on site mini wetland and to measure the effectiveness of the wetland treatment system. The greywater samples were collected from the effluent of single house, at influent, pre-treatment model (particle material), mini wetland model (plant tube sedge Lepironia Articulata), and control model (without plant) at two sampling period. The mini wetland model shows high removal performance of 81.42 % BOD, 84.57 % COD, 39.83 % AN, 54.70 % SS, and 45.01 % turbidity. Generally, the results show that the constructed mini wetland was effective to remove contaminants and suitable for treatment of greywater sources. In view of future application, further explorations should consider other aquatic plants and disinfection system to achieve more efficient treatment.