本文關(guān)鍵詞： 主要水體污染物 時空分布特征 污染源解析　出處：《合肥工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：巢湖外源污染的輸入,尤其是入湖河流南淝河的污染輸入是巢湖污染的主要來源,根據(jù)“治湖先治河”的策略,對巢湖流域入湖河流南淝河污染以及治理的研究迫在眉睫。本文全面調(diào)查了南淝河流域污染物的排放及入湖量,分析了污染源結(jié)構(gòu),以COD、氨氮、總氮和總磷污染物在南淝河水體中的含量和時空分布特征為主線,運(yùn)用內(nèi)梅羅指數(shù)法對南淝河水質(zhì)進(jìn)行綜合評價,在南淝河分區(qū)的基礎(chǔ)上利用多元統(tǒng)計原理對水體進(jìn)行污染源解析。得到以下幾個結(jié)果:(1)污染物調(diào)查分析結(jié)果表明:南淝河流域COD、氨氮、總氮及總磷污染比較嚴(yán)重,同時,內(nèi)梅羅評價法評價結(jié)果也表明,南淝河流域水環(huán)境質(zhì)量主要集中在V及劣V類水。(2)其污染物的時空分析結(jié)果表明,從時間上來看,符合枯水期平水期豐水期這一趨勢;整體上,南淝河受城市污染影響的特征表現(xiàn)明顯。南淝河干流的各水質(zhì)指標(biāo)呈現(xiàn)出先增加后減少的變化趨勢,結(jié)合污染源調(diào)查分析和南淝河水體達(dá)標(biāo)方案,為了有效控制南淝河干流污染,應(yīng)該以控制支流板橋河、二十埠河和店埠河的氮磷輸入為主。(3)在分區(qū)的基礎(chǔ)上,通過主成份分析,根據(jù)變量的因子載荷和監(jiān)測斷面的因子得分,識別污染源,其中,A區(qū)83.33%污染來源于點(diǎn)源有機(jī)物和點(diǎn)源營養(yǎng)物質(zhì);B區(qū)70.16%來源于點(diǎn)源營養(yǎng)物質(zhì)和點(diǎn)源有機(jī)物;C區(qū)71.63%的污染來源于農(nóng)業(yè)面源的農(nóng)業(yè)營養(yǎng)物質(zhì)和生物化學(xué)影響,通過主成分多元線性回歸分析,獲得了每種水質(zhì)指標(biāo)對污染類型的貢獻(xiàn)率,較好地估計了主要因子對水質(zhì)的污染程度,可以為科學(xué)合理的河流水質(zhì)管理提供技術(shù)支持。
[Abstract]:The main source of pollution in Chaohu Lake is the input of exogenous pollution, especially the pollution input from Nanfeihe River into the lake. According to the strategy of "harnessing the lake first", Chaohu Lake is the main source of pollution in Chaohu Lake. It is urgent to study the pollution and control of Nanfeihe River in Chaohu Basin. In this paper, the discharge and quantity of pollutants in Nanfeihe River Basin are investigated, and the structure of pollution source is analyzed. The content and temporal and spatial distribution of total nitrogen and total phosphorus pollutants in Nanfeihe River were used as the main line. The water quality of Nanfeihe River was evaluated by Nemero index method. On the basis of the division of Nanfeihe River, the pollution sources of the water were analyzed by multivariate statistical principle. The following results were obtained: 1) the results of investigation and analysis of pollutants showed that: COD, ammonia nitrogen in Nanfeihe River basin. Total nitrogen and total phosphorus pollution is serious, meanwhile, the evaluation result of Nemero evaluation method also shows that the water environmental quality of Nanfeihe River basin is mainly concentrated in V and inferior V water. From the point of view of time, it is in line with the trend of high water period in low water period. On the whole, the characteristics of Nanfeihe River affected by urban pollution are obvious. The water quality indexes of the main stream of Nanfeihe River increased first and then decreased, combined with the investigation and analysis of pollution sources and the plan of reaching the standard of Nanfeihe River water body. In order to effectively control the pollution of the main stream of Nanfeihe River, it is necessary to control the nitrogen and phosphorus input of the tributaries, Banqiao River, 20 Port River and Dianbu River. According to the factor load of variables and the factor score of monitoring section, the pollution sources were identified. The pollution in area 83.33% was from point source organic matter and point source nutrients. Area B 70.16% was derived from point source nutrients and point source organic matter. 71.63% of the pollution in area C originated from the agricultural nutrition and biochemical effects of agricultural non-point source. The contribution rate of each water quality index to the pollution type was obtained by principal component linear regression analysis. The pollution degree of main factors to water quality is estimated well, which can provide technical support for scientific and reasonable river water quality management.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X52

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