漢江漢中段水體codbod與do的測定及相關(guān)關(guān)系分析畢業(yè)論文(參考版)
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【正文】 參考文獻(xiàn)[1] [M] .北京:高等教育出版社,2002:167164.[2] [M].北京:化學(xué)工業(yè)出版社,:3031.[3] 奚旦立,孫裕生,留秀英編[M].:高等教育出版社,2005:3738.[4] 奚旦立,孫裕生,[M].北京:高等教育出版社,2005:1112.[5] [M].北京:化學(xué)工業(yè)出版社,:345346.[6] [M].北京:化學(xué)工業(yè)出版社,:345347.[7] 國家環(huán)保局《水與廢水監(jiān)測分析方法》編委會(huì)[M].:中國環(huán)境出版社,.[8] 奚旦立,孫裕生,[M].北京:高等教育出版社,2005:567569.[9] 郭勁松,[M].1994,10（4）:1720.[10] H. Wang . M. . Xu, V. Poole . A. Spacie. Dissolved oxygen dynamics of streams draining an urbanizedand an agricultural Modelling [J]160 (2003) 145_/161.[11] Patrick J. Mulholland . Jeffrey N. Houser . Kelly O. Maloney. Stream diurnal dissolved oxygen profiles as indicatorsof instream metabolism and disturbance effects Fort Benning as a case study. Ecological Indicators[J] 5 (2005) 243–252.[12] [M].北京:高等教育出版社2003,7:205206.[13] [M].北京:高等教育出版社,2005,443446.[14] 孔昌俊,[M].北京:科學(xué)出版社,2004,132133.[15] [M].北京:化學(xué)工業(yè)出版社,:395.River water Hanzhong of COD，BOD，DO and the determination of mutual relationsYou Jia（Grade03,Class 1,Major Environmental science，school of chemical and environmental science，Shaanxi University of Technology，Hanzhong 723001，Shaanxi）Tutor:Gong JingliAbstract ：This article to Hanjiang River water body COD, BOD, the DO three water quality targets has carried on the determination, studies the Hanjiang River water body through the massive surveys data analysis the pollution to suffer injury the situation, elaborated three relationships. Through the data survey and three relational researchcarries on the correlation to the Hanjiang River water quality the appraisal, the understanding grasps Hanjiang River the pollution situation, thus establishes the organic pollution preventionmechanism. Keyword：DO，COD，BOD，Mutual relations。漢江水體中排入了污水后，由于微生物的降解作用，導(dǎo)致水體中的溶解氧下降，隨著水中有機(jī)物含量的降低，水體中的復(fù)氧率慢慢大于耗氧率，慢慢的溶解氧恢復(fù)到飽和點(diǎn)。L1屬于Ⅱ類水質(zhì)標(biāo)準(zhǔn)；（2）通過以上實(shí)驗(yàn)數(shù)據(jù)分析得出γ= ，γ，y=*x+ 為線性方程，漢江水體中COD與BOD5存在有明顯的線性關(guān)系；（3）漢江水體自凈能力比較好，可以降解水體中的有機(jī)污染物的效率比較高，在比較短的距離中BOD5的含量已經(jīng)有了明顯的下降；（4）漢中市附近的漢江水體污染比較嚴(yán)重，大量的城市生活污水排入漢江導(dǎo)致漢江的水質(zhì)大幅度下降，大量的生活污水排入漢江水體后，會(huì)出現(xiàn)水體的富營養(yǎng)化，上游的溶解氧含量較為充足，隨著污水的排入，水體中的溶解氧迅速下降，如果長期如此會(huì)使?jié)h江水質(zhì)下降，破壞水中的生態(tài)平衡，導(dǎo)致水體環(huán)境惡化。 mg通過對漢江水體的監(jiān)測，對大量的BOD、COD、DO的數(shù)據(jù)進(jìn)
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