南投縣日月潭生態工程(浮島式淨水)設置可行性計畫案
| 中文摘要 | 日月潭近年因遊客人數增加、沿岸飯店、民宅及釣魚平台林立，造成日月潭水質污染日益增加；水質資料顯示從民國八十六年起日月潭水質由原先貧養進入普養的階段，CTSI值亦有再上升趨勢；但是921地震後，雖然短期間水質有變好的趨勢，但是隨著遊憩設施的修復，遊客人潮逐漸增加，反而造成目前水質負面的影響，近年開放陸客來台後，觀光旅客數逐年倍增，隨觀光人數倍增後，所帶來的污染量對水質污染惡化情形的影響不容忽視。 依調查結果分析，除武界引水污染外，其他污染源大部分主要來自水社污水廠附近、涵碧樓附近、水社碼頭附近及伊達邵碼頭附近列管事業，推測因該區域列管事業較多，放流水排放對水庫水質有一定的影響；CTSI普遍呈現普養狀態，各採樣點之水質差異並未非常顯著，唯在採點水社污水廠、涵碧半島附近有呈現優養情形，主要受到鄰近潭區商家、旅館、飯店稠密，受較多生活或遊憩污水排放的影響。 本計畫以Vollenweider模式分析計算日月潭水庫符合各類水質標準時涵容能力，並依據集水區特性將日月潭區分為4個水污染熱區，分別評估各水污染熱區所能承載污染源的容量及符合各類別水質建議削減量。另以WASP模式來建立日月潭水體水質模式，根據模式計算結果顯示，目前日月潭的BOD及NH3-N之涵容能力分別約為2,100及950 kg/day，而由日月潭集水區點源及非點源污染所貢獻之平均每日BOD及NH3-N排放量約分別為67.3及23.4 kg/day，而由武界引水之BOD貢獻量約為3,400 kg/day，NH3-N貢獻量約為734 kg/day。評估結果顯示，目前日月潭部分天數之BOD負荷超過水體涵容能力，NH3-N之負荷則尚未超過水體之涵容能力。模擬結果顯示若能於武界引水削減40%以上的污染量，預估日月潭水體BOD可符合甲類水體水質標準。 本計畫採用線性規劃來協助求解日月潭各種污染削減的最佳策略，經過線性規劃效益分析後，建議在水污染熱區Ⅰ、Ⅱ、Ⅲ所需建置的生態工程，人工浮島面積約需1,080~1,765 m2，集水區草溝長度約需610 m~971 m。 | ||
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基本資訊
| 專案計畫編號 | 經費年度 | 099 | 計畫經費 | 2250 千元 | |
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| 專案開始日期 | 2010/10/15 | 專案結束日期 | 2010/12/31 | 專案主持人 | 陳勝恭 |
| 主辦單位 | 南投縣政府環境保護局 | 承辦人 | 黃文毅 | 執行單位 | 能碩工程顧問股份有限公司 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
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| 期末報告 | 合併檔.pdf | 73MB |
Abstract
| 英文摘要 | Sun Moon Lake in recent years because of tourists continues to increase, that goes along with volume of water pollution also increased. The information of water quality of CTSI values rise again. After opening to the mainland china tourists to Taiwan in recent years, with the number of tourists doubled, the water quality are growing bad with the amount of pollution. The water pollution in Sun Moon Lake cannot be ignored. According to the investigation, WuJie channeled water from the upper Jhuoshuei River into the lake were the major pollution sources. Except of the major pollution sources there are many wastewater treatment plant surrounding in the Lake, such as Shueishe, Sunmoon wastewater treatment plant and other hotel’s wastewater treatment plants. The more effluent discharged from the plant and less in the water quality in the region. Carlson’s Trophic State Index are showing eutrophic state near the Hanbi peninsula. In this project we used Vollenweider model to analysis the Sun Moon Lake Reservoir assimilative capacity of various types, and based on characteristics of the lake catchment area was divided into four water pollution hot spots, respectively, to assess the sources of water pollution hot spots that can carry the capacity and meet Water proposal to reduce the amount of each category. And used WASP model to build another lake water quality model, based on model results indicate that the current assimilative capacity of the BOD and NH3-N to Sun Moon Lake were approximately 2,100 and 950 kg / day, and by the Sun Moon Lake watershed point sources and non-point sources the average daily contribution of pollution BOD and NH3-N emission of about 67.3 and 23.4 kg / day, while the BOD contribution of water from the Wujie about 3,400 kg / day, NH3-N contributed about 734 kg / day. Assessment indicated that the number of days of some of the current Sun Moon Lake BOD load exceeding the assimilative capacity, NH3-N of the load is not exceeded the assimilative capacity of water bodies. Simulation results show that if the Wujie channeled water reduced more than 40% in the amount of pollution, lake water would meet water quality standards. This project also used linear programming to help solve the best benefits management plan to reduce the pollution. It proposed water pollution hot zone Ⅰ, Ⅱ, Ⅲ required to build the eco-engineering, artificial floating islands area to be 1,080 ~ 1,765 m2, the length of the catchment area grass ditch about 610 m ~ 971 m. | ||
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