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研究生:魏信和
研究生(外文):Shin-Ho Wa
論文名稱:河川水質模式之發展與應用--非點源污染對河川水質之影響探討
論文名稱(外文):The Development and Application of Water Quality for River Basin -- The Study of Nonpoint Source Pollution Impact on River
指導教授:廖述良廖述良引用關係
指導教授(外文):Shu-Liang Liaw
學位類別:碩士
校院名稱:國立中央大學
系所名稱:環境工程研究所
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:1994
畢業學年度:82
語文別:中文
論文頁數:103
中文關鍵詞:水質模式非點源污染
外文關鍵詞:water quality modelnonpoint sources pollution
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本研究主要目的乃在於發展一套流域性一維穩態河川水質模擬模式,主要
功能在輔助進行水污染防治策略之分析與評估。另一方面乃是希望藉由所
發展之河川水質分析系統進行非點源污染對河川水質影響之探討,以輔助
河川水質管理策略擬定過程中點源與非點源控制優先順序之判定。水質模
擬模式主要考量的污染源包括點源與非點源,考量之河川流域系統組成則
包括支流與小支流、感潮與非感潮區。模擬方式是以一維穩態水質模式,
模擬水中之DO、BOD、T-N與T-P四項水質參數。本研究以中港溪流域,進行
案例研究,經案例研究之結果,可得以下之結論: (1)本研究同時考慮點
源與非點源對水質之影響,將使模擬結果更接近實際狀況。(2)點源量固
定下,非點源污染排入後,對河川水質將產生負面影響,且隨排入之污染
量越高,對河川之衝擊亦加大。(3)當排入點源污染量甚大時,不同非點
源負荷量排入對水質影響較不明顯,但當排入點源污染量較低時,非點源
負荷量排入對水質影響即明顯顯現;故可知當點源污染進行有效管制削減
後,非點源污染之影響將日漸重要。(4)以分散排入之方式對河川水質瞬
間衝擊較小,且非點源大多以分散排入之方式進入水體,本研究之案例乃
考慮非點源污染較嚴重之狀況,故實際水質模擬結果應較本模式模擬之結
果為佳。 (5)在不同之基流量考慮下,非點源污染對河川之衝擊隨基流量
增大而減低。本系統模式可同時考慮感潮、非感潮及厭氧等不同作用,且
可將點源、非點源(集中與分散排放)及抽水、支流等七種不同河川型態,
由案例模擬之結果可知模式可適當的模擬河川水質之變化。
The main purpose of this study is to develop a water quality
simulation model of river in order to aid the decision maker in
water quality simulation of strategies planning of water
pollution control. Moreover, this study also identify various
water quality impact of point and nonpoint sources on river by
the use of the water quality simulation model. The pollution
sources considered includes point and nonpoint sources in the
water quality simulation model. The component of river basin
system considered includes branches, tributaries, tidal and non-
tidal areas. The river system is assumed to be an one
dimensional steady state system. The water quality parameters
are simulated includes DO, BOD, T-N, and T-P with an assumption
of first order decay of BOD,T-N and T-P. What are to be
discussed in the case study of Chung-Gung River results have
shown that : (1)it is required to consider nonpoint sources in
the planning of water quality control strategy; (2)the loading
of point source is fixed, the water quality impact will be
added when the non-point sources discharge into the river. The
water quality impact will become larger when the loading is
larger; (3)the loading of point source is more larger then the
water quality impact of varies loadings of nonpoint sources is
vary small. But the water quality impact of nonpoint sources
will be vary large when the loading of point source is small.
So that the control of nonpoint sources is becoming a major
challenge to water quality manager when the most point source
pollution have been controlled; (4)in general, the water
quality impact of distributed discharges will be reduced,
nonpoint sources almost get into the river with distributed
discharge. However, this study consider the nonpoint sources as
most sever, so that the real water quality of river seems to be
much better than the simulation results; (5)at various base
flow, the water quality impact of nonpoint sources on river
will be reduced when base flow become lager.
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