本文選題：預警 + 水源水質��； 參考：《湖南大學》2015年碩士論文

【摘要】：隨著地表水源水質的日益惡化及突發(fā)性水污染事件的不斷發(fā)生,原水水質預警監(jiān)測系統(tǒng)作為保障供水水質安全的有效性措施,目前已在國內外得到成功的應用和推廣,而處于西江下游流域的某市關于水源水質安全預警研究還處于起步階段。本論文以2014.02~2015.01為研究周期,對西江下游水源水質及某水廠常規(guī)處理工藝單元出水水質進行監(jiān)測與分析,研究西江水源水質的變化規(guī)律及常規(guī)處理工藝對污染物的去除變化,在此基礎上針對該水源水質提出污染物指標的預警水平,初步確定水質預警指標及預警監(jiān)測點,為在西江下游流域建立大范圍水質預警監(jiān)測系統(tǒng)提供基礎性研究,并對濁度、氨氮、COD_(Mn)等關鍵預警指標進行相應的應急措施試驗研究,為水廠應對水源水質變化提供有效指導和科學調控。研究結果表明:(1)西江下游水源水質整體良好,基本上達到國家地表水環(huán)境質量標準(GB3838-2002)規(guī)定的Ⅱ類水質標準,超標指標主要是DO、COD_(Mn)、TN、氨氮等,藻類含量較高,土嗅素、2-MIB、二甲硫醚、二甲基三硫醚等嗅味物質偶有檢出。水庫水源水質整體優(yōu)于西江水,TN、藻類個數(shù)、葉綠素a等指標含量較高;(2)從水質指標的季節(jié)性及垂直分層變化分析得知,水溫、pH、電導率、藻類等指標季節(jié)性變化規(guī)律較明顯,濁度、COD_(Mn)、TP、葉綠素a、藻類個數(shù)等指標分層現(xiàn)象較明顯,均表現(xiàn)為下層水樣較高特點;(3)從水質指標間相關性分析可知,有機物類、氮類、藻類、臭味物質等指標與常規(guī)指標(濁度、DO、水溫、pH、電導率)存在一定的顯著相關性,氮類形態(tài)間(氨氮、亞硝態(tài)氮、硝態(tài)氮)轉化關系較明顯,分別得出了西江水源COD_(Mn)、TN、氨氮、葉綠素a、2-MIB等指標的回歸方程;(4)水廠常規(guī)處理工藝對濁度、TOC、UV254、COD_(Mn)、氨氮、亞硝態(tài)氮、葉綠素a等污染物的平均去除率分別在94.04%、21.34%、31.25%、33.9%、76.18%、88.21%、91.29%左右,而對氯化物、TN、DOC、臭味物質等污染物基本無去除效果;(5)初步確定西江下游源水預警指標為濁度、pH、DO、電導率、水溫、總氮、COD_(Mn)、氨氮、葉綠素a,確定預警監(jiān)測點為麻子沖水閘出水口、西江取水口、水廠進水口。
[Abstract]:With the deterioration of surface water quality and the occurrence of sudden water pollution events, the early warning and monitoring system of raw water quality, as an effective measure to ensure the safety of water quality, has been successfully applied and popularized at home and abroad. However, the early warning research on water quality safety in a city located in the lower reaches of Xijiang River is still in its infancy. In this paper, the water quality of water source in the lower reaches of Xijiang River and the effluent quality of a conventional treatment process unit in a water plant are monitored and analyzed with the period of January 1, 2014.02, and the change law of water quality of Xijiang River and the removal of pollutants by conventional treatment process are studied. On this basis, the early warning level of pollutant quality index is put forward, and the water quality early warning index and early warning monitoring point are preliminarily determined, which provides a basic research for the establishment of a large-scale water quality early warning monitoring system in the lower reaches of the Xijiang River, and the turbidity. In order to provide effective guidance and scientific control for water plant to deal with the change of source water quality, the corresponding emergency measures are tested and studied on the key early warning indexes, such as ammonia nitrogen, CODX, Mnn and so on. The results show that the water quality of the lower reaches of the Xijiang River is good as a whole, which basically meets the water quality standard of class 鈪，

本文編號：2004306