Treatment of Wastewater from Treasure-Hill Community through Constructed Wetlands and Aquatic Plants

• Main Authors: Ruei-Yin Chiu, 邱瑞瑩
• Other Authors: Tzong-Shyan Lin
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/78401099004916723695

碩士 === 臺灣大學 === 園藝學研究所 === 95 === It is because of low cost and easy operation, constructed wetlands are used in domestic, industrial and agriculture wastewater treatment recently. Part families’ domestic wastewater could not be treatmented and it was harmful to environment in Treasure- Hill community. In this study, treatment of wastewater from Treasure- Hill community by using Hydrocleys nymphoides,Hedychium coronarium, Canna indica L.,Typha angustata and Cyperus haspan L., and eminating ammonia (NH4+), nitrate(NO3-), total Kjeldahl (TKN) and total phosphorous (TP) removal, respectively. Results of the experiment, indicated these five aquatic plants could remove pollutants from wastewater and grew well in wasterwater from Treasure- Hill community. NH4+, NO3-, TKN, TP were removed by Canna indica L. 0.124 g cm-2 d-1、0.049 g cm-2 d-1、0.167 g cm-2 d-1 and 0.070 g cm-2 d-1, respectively.and removal efficiency was the best among the five aquatic plants. Results of the experiment on constructed wetlands in Treasure-Hill community, Total nitrogen (TN) and total phosphorous removal efficiency in subsurface flow constructed wetland were 26.2％ and 16.0％ and in free water flow constructed wetland were 12.2％ and 7.0％, respectively. Indicating the TN and TP removal efficiency in subsurface flow constructed wetland was better. Nitrogen was organization in free water flow constructed wetland, and ammonification in subsurface flow constructed wetland. Denitrification, micro- organism and other chemical process were contributed 0.93 to nitrogen removal, while only 0.07 of the removed nitrogen uptaked by aquatic plants. It was eminated that 400.7 m2 and 1683.1 m2 area was needed in the free water flow and subsurface flow constructed wetland construction, respectively. Indicating that provided area is not enough in Treasure-Hill community originally.