Shanghai Interior Surface Water Convention Pollution Index Correlation Research And In Data Verification Application

In the water body,the correlation between relates mutually targets mainly decided by the water in.In a stability region,the source of pollution and the pollutant ingredient is relatively stable,cannot appear the fierce change,the correlation between different monitor targets is also stabler obviously.Take the relevant analysis as the foundation,the discussion monitor data verification rationalization,the standardized method,all has certain guiding sense to the routine work and the scientific research.This research depends on the interior surface water water quality monitor data in the Shanghai environmental monitoring center all previous years,take the relevant analysis as the foundation,discusses water quality change situations of Huangpu River,Suzhou River and so on the Shanghai main interior river course near 20 year,and discusses the application in the data verification aspect.Seven key monitor water quality indexes were carried on the analysis,which was accumulated by Shanghai environmental monitoring center(SEMC) for previous years,dissolved oxygen(DO),chemical oxygen demand(COD_Mn),chemical oxygen demand(COD_Cr),five days biochemical oxygen(BOD₅),the ammonia nitrogen(NH₃-N),total nitrogen(TN) and total phosphorus(TP).Through carries on the reorganization and the analysis to the near 20 year data,draws following conclusion:First embarks from the basic meaning angle,DO and COD_Mn,COD_Cr, BOD₅,NH₃-N,TN correlation;Between COD_Mn,COD_Cr,BOD₅ the correlation is obvious;NH₃-N and TN correlation is remarkable;TP and other index non-correlated.The Suzhou River water quality was worst, the Wenzaobang River,Dianpu River,the Huangpu River was better and better;the water quality of Suzhou River improved obviously,the water quality of Wenzaobang River and Huangpu River improved slightly,the water quality of Dianpu River was worsening;Compares with other indexes,NH₃-N,TN and TP pollution was more serious,in the Shanghai main river course(the Huangpu River,the Suzhou River,the Dianpu River,the Wenzaobang River)in recent 20 years.And the upstream the water quality condition more and more becomes main restriction factor for the water quality improvement.The correlation change situation of the major indexes is big,carried the cluster analysis on the correlation coefficient of every years,divided it into the different stages,for the Huangpu River,the Suzhou River.Various stages present the different correlation level,each correlation item in the different stage distributed scatter diagram,the regression curve and the boundary curve also has the sweeping change.Finally,through November,2008 the primitive monitor data examination,the method which based on the boundary curve can satisfy the basic request.Take this as the foundation,may promote the monitor data verification scientific style,the standardization.Simultaneously also has certain guiding sense to the environment appraisal and the pollutant target fast forecast.