遼河論文：遼河重金屬多環(huán)芳烴污染源解析因子分析多元線性回歸分析

1、線性回歸分析【中文摘要】本文在利用遼河水質(zhì)監(jiān)測數(shù)據(jù)的基礎(chǔ)之上，利用多元統(tǒng)計分析方法較為全面的對遼河持久性污染物進(jìn)行研究，分析其來源,并計算其對水體的貢獻(xiàn)率。通過對遼河12個監(jiān)測點位6種常規(guī)理化指標(biāo)進(jìn)行因子分析，得出：12個監(jiān)測點位水質(zhì)大部分為重度污染，占整個監(jiān)測點位的50%說明遼河水系尤其是其的中下游水體重度污染很嚴(yán)重;遼河主要污染物質(zhì)為BOD5CODCr氨氮;污染物質(zhì)的可能來源分別為農(nóng)業(yè)廢棄物、工廠排放的耗氧性有機(jī)污染物以及以農(nóng)副產(chǎn)品加工為主導(dǎo)的工業(yè)企業(yè)所排放的含氮廢水。通過對遼河12個監(jiān)測點位8種重金屬進(jìn)行因子分析，得出：監(jiān)測斷面的主要重金屬污染物為兩大類:一類為銅、汞、鉛混合型污染；另一

2、類為鎘、砷混合型污染。兩類污染物可能來源分別為汽車尾氣的排放及相關(guān)行業(yè)未處理廢水的排放。遼河12個監(jiān)測點位重金屬污染較為突出的3個點位分別為三合屯、通江口、朱爾山。通過對遼河8個監(jiān)測點位16種PAHs進(jìn)行因子分析和多元線性回歸分析，得出:多環(huán)芳烴各段面濃度分布表現(xiàn)為曙光大橋趙圈河珠爾山三合屯馬虎山福德店興安紅廟子。全河段濃度較高的多環(huán)芳烴有菲、萘、熒蒽。監(jiān)測斷面的PAHS虧染物為三大類：分別為石油及其精煉產(chǎn)品的燃燒污染；煤和生物質(zhì)燃燒污染以及石油排放污染；其對遼河水體PAHs的貢獻(xiàn)率分別為48.09%,44.19%,7.5%。遼河水體PAHs為混合型污染，其中以燃燒源為主,遼河附近相關(guān)行業(yè)的生

3、產(chǎn)污染以及附近居民的生活污染是導(dǎo)致該污染的主要原因?！居⑽恼緽yusingthewaterqualitymonitoringdataofLiaoRiverandmultivariatestatisticalanalysisinordertostudythepersistentpollutantscomprehensivly,tofindwheretheycomeandtheshareofpollutiontheyhavecontributedtotheLiaoRiver.ByusingtheFactoranalysistothesixcnventionalphysicalandchemic

4、alindicatorsofthetwelvemnitoringsitesinLiaoRiver,wecancometoaconclusionthat50%ofthemnitoringsitesisheavilypolluted;itshowsthattheLiaoheRiver,especiallythemiddleandlowerreachesofitsisheavilypolluted;themajorpollutantsintheLiaoRiverisBOD5,CODCrandNH4+-N,thepotentialsourceofpollutantsisagriculturalwast

5、e,industrialemissionswhichcontainsoxygenconsumingorganicpollutantandastheleadingindustrialenterprisesofnitrogenemissionsfromwastewaterinagriculturalprocessing.ByusingtheFactoranalysistotheeightheavymetal,wecancometoaconclusionthattheheavymetalpollutantsinthemnitoringsitescanbedividedintotwo;oneiscop

6、per,mercury,leadmixedpollution;anotheriscadmiumandarsenicmixedpollution;thepossiblesourcesofpollutantsisvehicleexhaustemissions,respectively,andrelatedindustriesdischargeuntreatedwastewater.ThemostpollutedinLiaoRiverisSanhetun,Tongjiangkou,Zhuermountain.ByusingtheFactoranalysisandtheMultiplelinearre

7、gressionanalysistosixteenPolycyclicAromaticHydrocarbons(PAH9intheeightmnitoringsites,wecancometoaconclusionthatAccordingtoconcentration,Shuguangbirdge>ZhaoquanRiver>Zhu'ermountain>Sanhetun>Mahumountain>Fudedian>Xing'an>Hongmiaozi;theentiresectionsofPAHsinhigherconcentrat

8、ionsareasfollows:phenanthrene,naphthalene,fluoranthene.thePAHspollutioninthemnitoringsitescanbedividedintothree:oneisThepollutionofburningthepetroleumanditsrefinedproducts;oneisthepollutionofcoalandbiomassburningemissions;theotheroneisthepollutionofoilemissions.ThesharerateofthreepollutiontotheLiaoRiveris48.09%,44.19%,7.5%.ThePAHspollutioninLiaoheRiverismixed;themainpollutionsourcesiscombustionsources;theproductionofrelatedindustriesneartheLiaoRiverpollutionandd