Research On Morphological Characters Of Heavy Metal And Suspended Solids In Luanhe-tianjin Water

For YuQiao reservoir heavy metal pollution is increasingly serious condition for many years,based on the diversion of surface sediment,backfilling materials on both sides of the iron metal in the form,the determination of suspended particulate matter and water simulation experiment,the research of heavy metal pollutants,suspended particle migration,transformation,and release characteristics and laws,for the serpentine channel reservoir water environment management and governance,to bridge the rolls pollutant source provides the basis.Paper main research work and achievements are as follows:(1)the annual surveillance data from 2009 to 2013,analysis and evaluation in nearly five years led to the improvement of the luanhe river,shahe,fruit nutrient content in the water,the main pollutants and change trend of the share rate.According to water quality evaluation,classification after total nitrogen into the evaluation system,2009 ~ 2013,serpentine,shahe,GuoHe water quality categories to ? class.From the point of comprehensive pollution index evaluation,the main pollutant serpentine for total nitrogen,total phosphorus,iron,manganese,Shahe main pollutant total nitrogen;Affected by the serpentine,shahe water quality and main pollutants GuoHe for total nitrogen,total phosphorus,iron,manganese.(2)the study of surface sediment in the water body,backfilling materials on both sides of the iron ore mineral composition,analysis of the components,including metal form ruled surface sediment source and effective toxic metal security risk influence to the environment.Through the study shows that the surface sediments and serpentine tailings sandstone mineral components and heavy metal content is basically the same,the surface sediment affected by pollution tail sand,serpentine surface sediment and tail sand,Cu,zinc,Fe,Mn form is given priority to with residual state,low content of exchangeable states,effective state content is low,but for the Fe,Mn,,because of the large absolute content still harmful impact on the water.(3)the study of morphological characteristics of heavy metals in suspended solids,analysis of diversion water along the components of suspended particles in water and the change rule,set up particles static sedimentation rate curve;Particle dynamic subsidence rules by empirical formula calculation and determine the subsidence area.Of diversion water suspended solids in the sedimentation rate and no significant relationship between the concentration of suspended solids content,the main factors affecting settling velocity as the particle size,sedimentation rate increase with concentration of suspended solids in water,the water content of suspended particulate matter in present power exponential decay with time,does not consider water scour under the influence of disturbance,the particle size of hover in water for 2.6 microns or less.