| Summary: | 碩士 === 大葉大學 === 工學院碩士在職專班 === 102 === A Constructed wetland was set up as in situ treatment facilities based on natural ecotechnology processes on the Yang Zi Cuo river basin in Changhua county to improve the water quality of Changhua water body. In this study, the operation and maintenance
management of Yang Zi Cuo river wetland purify water system (Nanshi site) was monitored to eusure its improvement of water quality. The water quality parameters such as BOD, SS, NH3-N, T-P and flow rate were monitored and analyzed. The results showed that BOD removal rate was over 40%, SS removal rate exceeded 50%, indicating that the setup of wetland system was capable of reducing BOD and SS of water pollution. The NH3-N removal rate was over 20%, it might be converted into NO3-N by nitrification microorganisms in wetland, the phosphorous in water of wetland exists almost entirely in phosphate, which constitutes the elements of nutrient in soil, plant and animal protoplasm. The T-P removal rate was also about 20%. The daily operation of the water can reach more than 400 CMD. This is a good demonstration site of waste water purification. In order to solve the problem of water contamination, improve water quality, promote ecological conservation, river waterfront reconstruction and landscape improvements, the set up of natural, ecological in situ treatment facilities on Yoko river basin will enhance the effectiveness of the on site water purification, strengthen the concerns of water pollution control and water protection in people of neighborhood communities, in addition to provide the public with clean water and good environment.
Keywords: Constructed Wetland, municipalities, wastes
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