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1、关键词：乐清湾，污染物，水环境质量，总量分配，排污权交易万方数据METHODOLOGYANDAPPLICATIONOFTOTALDISCHARGECONTROLOFPOLLUTANTSINLEQINGBAYABSTRACTLeqingBayislocatedatcoastalareaofsouthernZhejiangProvince.2LeqingBaycovers463.6kminareaandthecoastallineis184.7kminlength.Withtherapideconomicandsocialdevelopme
2、ntofregionsalongLeqingBay,moreandmoredifferentpollutantshavebeendischargedintothebay.TheamountofthesepollutantsexceedsthemarineenvironmentalcapacityofLeqingBay,thereforethecurrentwaterqualityofthebayisworthworrying.Accordingtothemonitoringdatain2006,therewasnofirst-typew
3、aterqualityofseawaterinthebay,andwaterqualityhaddeterioratedtothefourth-typewaterqualityorless.Worsemore,mostseazonesareundereutrophicationduetoexcessivedischargeoftotalnitrogen(TN)andtotalphosphorus(TP),whichhasgreatlydestroyedtheecologicalenvironmentoftheoceanandevenaf
4、fectedthefurtherhealthydevelopmentofeconomyandsocietyinthecoastalregions.Inordertodealwiththestiffsituationofwaterqualitydeteriorationand万方数据improvetheenvironmentalquality,it’surgenttosetuptheschemeoftotaldischargecontrolofpollutants,whichincludestheestimationaboutfluxof
5、pollutantsenteringtothesea,thecalculationofmarineenvironmentalcapacity,optimizationofcapacityallocationamongwaterzonesandtowns,industrialcapacityallocation,establishmentandimprovementofdischargetradingsystemandtherelevanttradingrules.AccordingtothepracticalsituationofLeq
6、ingBay,thecapacityallocationtechnology,thedischargetradingsystemandtherelatedtradinginstitutionswerestudiedinthispaperbasedonthefruitsoftheestimationaboutfluxofpollutantsenteringtotheseaandthecalculationofmarineenvironmentalcapacity.Themainresearchcontentsandresultsaresh
7、ownasfollows:(1)ThewaterqualityanalysisandcomprehensiveevaluationonLeqingBayThequalityofthesurfacewaterenvironment,thesedimentaryenvironmentandtheecologicalenvironmentwereanalyzed,andtheoverallenvironmentalqualityofthebayisevaluated.TheresultsshowthatLeqingBayisunderseve
8、reeutrophication,andthesedimentaryenvironmentalqualityofthesedimentisgenerallyingoodcondition.Diversity
