搜索
:2003-05-19:(2001021):(1953-),,,,.)))王宁,张刚,王瑗(,130024):,,:;;:X524:A:1001-6929(2004)02-0034-04EnvironmentalProtectionDredgingandItsEffectsforIntrinsicPollutionofLake:CaseStudyofNanhuLakeinChangchunWANGNing,ZHANGGang,WANGYuan(CollegeofUrbanandEnvironmentalScience,NortheastNormalUniversity,Changchun130024,China)Abstract:BasedontheintroductionofsedimentdredgingprojectanditsharnessingeffectsofNanhuLakeinChangchun,theimplementationprinci-plesandmethodsofsedimentdredgingareexpounded.Fromtheharnessingeffectssuchastheimprovementofwaterquality,itwasconcludedthatsedimentdredgingcouldcontrolthelakeeutrophicationandplayanirreplaceableroleinlakeenvironmentalprotection.Keywords:sedimentdredging;waterqualitymonitoring;harnessingeffect,,,,,[1],,/0,/0,,2070,,,,,,1111,,0196km2,313m,242m3,14136km2,,270d,,,1122060,,,,60000kg2060,,,,150~200m3,2070,,19791019801983/0,,0~112mgPL,0120m,pH1014~10161980,,1986,1988172ResearchofEnvironmentalSciencesVol.17,No.2,2004DOI10.13198/j.res.2004.02.36.wangn.009,1990,,,,)))/0,/0,,1935100m3,,,221119891219961,2339,1469168m,7,1m,,,,1935)199911615m3215m,2~3m,,,,8313m3,72%212:,,,;,:¹,,,,,5~7a,º,,,,»,(),,3,,213,,,,,2000)20028313m3,;,,31980,4(1)1Fig.1MonitoringlocationsofwaterqualityinNanhuLake,5)8,2001)20025)101,11999)20025)844,,GB1-200256Ó(),1,4,2~6,(DO)(SD)2BOD53,,2;352:)))11999)2002Table1Resultsofwaterqualityevaluationfrom1999to200219992000200120025678567856785678Q1)P(mg#L-1)0.60.140.150.060.240.620.330.360.120.360.150.160.180.120.150.080.240.110.130.13Pi24.05.66.02.49.624.813.214.14.814.46.06.47.24.86.01.64.82.22.62.823.04.65.01.43.823.812.213.43.813.45.05.46.23.85.00.63.81.21.61.8Q1)P(mg#L-1)3.844.122.212.063.065.944.183.985.124.812.791.233.781.352.283.323.901.952.762.98Pi12.813.77.46.910.219.813.913.317.116.09.34.112.64.57.43.323.901.952.762.9811.812.76.45.92.0618.812.912.316.115.08.33.111.63.56.42.322.900.951.761.98Q1)P(mg#L-1)1.591.790.140.220.945.611.290.361.042.081.380.400.150.250.550.681.090.371.290.93Pi3.23.60.30.41.911.22.60.72.14.22.80.80.30.51.10.681.090.371.290.932.22.6))0.910.21.6)1.13.2))))))0.09)0.29)Q1)P(mg#L-1)10.778.022.987.937.436.255.507.507.756.754.155.665.215.565.144.055.957.543.015.14BOD5Pi2.72.00.72.01.91.61.41.91.91.71.01.41.31.41.31.01.51.90.81.31.71.0)1.00.90.60.40.90.90.7)0.40.30.40.3)0.50.9)0.3:1)/)0BOD5,32[2-3]Table2ComparisonofwaterqualityindexesaboutNanhuLakedredgingDOP(mg#L-1)SDPmQ()P(mg#L-1)Q()P(mg#L-1)Q(BOD5)P(mg#L-1)20908.940.482.550.127.5019996.270.483.060.247.4320018.022.280.155.1420028.330.602.980.135.143Table3CalculationforthedecrementofpollutionstockpileaboutNanhuLakedredging19992002P(mg#L-1)PtP(mg#L-1)PtPt3.067.402.987.210.190.240.580.130.310.27BOD57.4317.985.1412.445.54311(2~5),5)82,,(5),BOD5;(6)8)2001Q()1999Q(BOD5),2,5,,,(6),2000,BOD5,3,,2Fig.2VariationtrendofmonthmeanmassconcentrationofTP3BOD5Fig.3VariationtrendofmonthmeanmassconcentrationofBOD52000,2001,4,Q()Q(BOD5),Q()Q(),,41999,,36174Fig.4VariationtrendofmonthmeanmassconcentrationofTN5Fig.5VariationtrendofmonthmeanmassconcentrationofNH3-N6Fig.6YearlyvariationtrendofwaterqualityindexesaboutNanhuLake3121,1999)20020124,0136,0115,0113mgPL,,318,1314,510118;3106,4181,2128,2198mgPL,2106,1510,6141198;0194,2108,0155,0193mgPL,19992000,019312,;BOD57143,6175,51145114mgPL,019,017,0130134,[4],,,,;BOD5,,3133,,BOD5,,0119t,0127t,BOD55154t,,/0/0,4,,,:a.4,,,b.,,,,c.1999,2002:0119t,0127t,BOD55154t,:[1].[A]..[C].:,1982.8-28.[2],,.[M].:,1999.13-14.[3].[R].:,2001.122-126.[4].[J].,2000,322(11):21-27.372:)))