碩士 / 國立雲林科技大學 / 環境與安全工程系碩士班 / 95 / The Putiz River is one of the 21 main rivers of Taiwan. With high population density along in Putiz River watershed there are high quantities of pollutants discharged into the river and there are amount of pollutants flowing into it and deteriorating the water quality. Constructed wetland is used temporarily to solve this problem before the construction of municipal sewer system.
The purpose of this study is to estimate the pollution removal efficiency of the constructed wetland on the purifying performance of constructed wetland on water quality of the Putiz River. It is well-known that constructed wetland can remove pollutants through coagulation, sedimentation, and adsorption. The contribution of oxygen from water plants is also an important factor. The constructed wetland (near Chung Yang Industrial Park) was set up in July 2004 and was operated since September 2004. Three kinds of plants were cultivated in the constructed wetland. They were Ludwigia X taiwanensis Peng, water cabbage and water celery. The concentrations of BOD, NH3-N and SS in the influent were in the range of 2.4-33.7mg/L, 0.06-30.1mg/L and 5.0-240mg/L. Water celery grew well under this condition however Eichhornia crassipes Salms-Laub could not developed as well as water celery did. The efficiency of removal of BOD was 2.4%-98.8% with an average of 49.7%. The maximum amount of BOD removed was 52.4 Kg/day. For NH3-N, the efficiency of removal was 1.2%-68.0% with an average of 38.8% and maximum daily amount of 22.2 Kg. The efficiency of SS removal was within 16.0%-99.0% with an average of 63.0% and maximum daily amount of 438.4Kg. Our constructed wetland has better performance in removing SS than that of other constructed wetlands in Taiwan. It may be due to the long retention time( about 2 days), used in our constructed wetland. It was also found that suitable plants cultivation was also an important effect to enhance the removal of SS.
| Identifer | oai:union.ndltd.org:TW/095YUNT5633016 |
| Date | January 2007 |
| Creators | Hsine-Kai Wu, 吳献凱 |
| Contributors | none, 萬騰州 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 115 |
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