本文關(guān)鍵詞： 灰色關(guān)聯(lián)評價(jià)法 糞大腸菌群 污染物分擔(dān)率 指標(biāo)選取 水質(zhì)評價(jià)　出處：《人民長江》2016年S2期 　論文類型：期刊論文

【摘要】：為了解和進(jìn)一步研究長江水質(zhì)狀況,選取其干流及部分支流宜賓-萬州共10個(gè)斷面,分析了2004~2013年的水質(zhì)數(shù)據(jù),進(jìn)行水質(zhì)評價(jià);另外,還分析了各斷面糞大腸菌群的時(shí)空變化規(guī)律。通過計(jì)算污染物分擔(dān)率并對其按得分排序,得到排名靠前的8項(xiàng)污染物:TP、CODMn、鉛、DO、氟化物、鎘、BOD5、氨氮;然后利用這8項(xiàng)指標(biāo)采用灰色關(guān)聯(lián)評價(jià)法對該河段水質(zhì)進(jìn)行評價(jià)。結(jié)果顯示,大部分?jǐn)嗝嫠|(zhì)均在Ⅲ類以上,宜賓、寸灘、臨江門、清溪場城區(qū)斷面水質(zhì)稍差,但水質(zhì)總體狀況有逐年轉(zhuǎn)好的趨勢。大部分?jǐn)嗝婕S大腸菌群在2003,2006,2010年前后到達(dá)高點(diǎn),分析其原因,可能與三峽蓄水、水溫、高錳酸鉀指數(shù)、總磷、BOD5有關(guān)。
[Abstract]:In order to understand and further study the water quality of the Yangtze River, the water quality data from 2004 to 2013 were analyzed and the water quality was evaluated by selecting 10 sections of the main stream and some tributaries of Yibin-Wanzhou. In addition, the temporal and spatial variation of fecal coliform bacteria in each section was analyzed. By calculating the pollutant sharing rate and ranking it according to the score, we got the top 8 pollutants: TPN, CODMn, Pb-DO. Fluoride, cadmium Bod 5, ammonia nitrogen; Then the water quality of the reach was evaluated by using the grey correlation evaluation method. The results showed that the water quality of most of the sections was above class 鈪，

本文編號：1461087