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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/4436

    標題: 以人工溼地系統處理受污染河水中營養鹽之探討
    Nutrient removal from polluted river water by using constructed wetlands
    作者: 何茂賢
    Mau-Shian He
    貢獻者: 荊樹人
    關鍵字: 去除速率
    temperature correction factor
    removal rate
    ammonia nitrogen
    polluted river water
    constructed wetlands
    日期: 2003
    上傳時間: 2008-10-08 15:45:23 (UTC+8)
    摘要: 本研究以試驗規模之人工溼地系統(Constructed Wetland system)直接處理污染性河水(二仁溪),探討人工溼地系統對氨氮與磷酸鹽之去除效能及動力學行為。此溼地實驗系統設立於台南縣與高雄縣交界之二仁溪畔,於1997年3月操作至今(2003年3月),主要包括自由表面流動式系統(FWS)與表面下流動式系統(SSF)。在研究試驗操作期間,為了探討不同操作模式(系統串聯與並聯),大致分為三個試程:(一)1997年3月至1999年1月(串聯式)(二)1999年3月至2000年11月(串聯式)(三)2001年11月至2003年1月(並聯式)。串聯系統(CW)中之氨氮總平均去除效率為63±25 %;並聯系統FWS與SSF系統中氨氮總平均去除效率分別為80±19 %、68±20 %。串聯系統(CW)中之磷酸鹽總平均去除效率為55±21 %;並聯系統FWS與SSF系統中磷酸鹽總平均去除效率分別為62±24 %、74±26 %。試程三分成二個不同水力負荷階段,第一階段以固定水力負荷0.036、0.038 m3/m2/d(總水力停留時間4天),連續入流操作於FWS、SSF系統,試程期間自2001年12月至2002年6月;第二階段試程期間為自2002年8月至2003年1月,以固定水力負荷0.072、0.075 m3/m2/d(總水力停留時間2 天),連續入流操作於FWS、SSF系統。在同一時間與污染負荷下,對於氨氮去除速率之快慢由數據上顯示,SSF系統(0.10~0.60 g N/m2/d)稍稍優於FWS系統(0.10~0.40 g N/m2/d)。另外,同一時間與污染負荷下,SSF系統(0.01~0.20 g P/m2/d)與FWS系統(0.01~0.20 g P/m2/d)對於磷酸鹽去除速率之快慢由數據顯示出之差異不大;研究期間所求得氨氮之溫度校正係數(θ)於CW、FWS、SSF系統中分別為1.005、1.091、0.875;磷酸鹽θ值於CW、FWS、SSF系統中分別為0.946、1.074、1.040,顯示出FWS系統受溫度影響較SSF系統大。
    This study was using a constructed wetland (CW) system directly treating polluted river water from Erh-Ren River. The main goal of this research is a study of the kinetic behavior of the CW in removing ammonia nitrogen and orthophosphate in order to obtain related treatment models and parameters. The CW is built at the bank of Erh-Ren River, including a free water surface flow (FWS) system and a subsurface flow (SSF) system from March 1997 to March 2003. During the research period, three strategies were used in order to study different operating (in series and parallel connection). Strategy 1: between March 1997 and January 1999 (in series); Strategy 2: between March 1999 and November 2000 (in series); Strategy 3: between November 2001 and January 2003 (in parallel). Ammonia nitrogen removal efficiency in CW system is 63±25 %; FWS and SSF system is 80±19 % and 68±20 %, respectively. Orth phosphate in CW system is 55±21 %; FWS and SSF system is 62±24 % and 74±26 %, respectively. Strategy 3 have two different hydraulic loading rate. Between December 2001 and June 2002, the hydraulic loading rate was retained at 0.036 and 0.038 m3/m2/d (HRT=4day) in FWS and SSF system, respectively. Between August 2002 and Januar 2003, the hydraulic loading rate was retained at 0.072 and 0.075 m3/m2/d (HRT=2day) in FWS and SSF system, respectively. Ammonia nitrogen removal rate in SSF (0.10~0.60 g N/m2/d) batter than FWS (0.10~0.40 g N/m2/d) system; orthophosphate removal rate is similar in SSF (0.01~0.20 g P/m2/d) and FWS system (0.01~0.20 g P/m2/d). The temperature correction factor (θ) of ammonia nitrogen in CW, FWS and SSF system are 1.005, 1.091 and 0.875, respectively; The θ of orthophosphate in CW, FWS and SSF system are 0.946, 1.074 and 1.040, respectively. Effect of the temperature on FWS was more than SSF system.
    關聯: 校內公開,校外永不公開
    Appears in Collections:[環境工程與科學系(所)] 博碩士論文

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