(11Contaminatedsitesoilcharacteristicsandenvironmentalriskassessment
soilExperimentalsoilpHvalueofthesite104samplingpointstotalof276
concentrationofleadsamples.theparticlesizedistribution,the
resultsweaklyalkalineshowvenueandleaddetectionseverepHvalueoverall,someareasaffectedbyleadpollution;differenttabletsdiameterforwashing.Venueforriskidentification,exposureassessment,toxicityassessment,comprehensive
thespotforresidential
repakthetargetconsideration,todetermineandpublicland,usingasabloodleadevaluationvalue293mg/kgvalue;Whenusedcommercial’serviceandindustrialland600mg&gtargetvaluefortherepair.
(2)Attritionscrubbinglaboratorystudies
orthogonalexperiments:soilandwater
rateBestwashingpamrmtersdeterminedbyratioof70%drytrotter,thetempemtureof25℃,stirring
1200r/min.3partssoilattrition30rain,st打ingaretoscrubbing,cleaningefficiencies67.61%,31.71%,
the41.01%.Researchsandparticlesize
cleaningqualitygrad吨variationfoundat0.25~0.5mmchangesinflectionpoint;scanningelectronmicroscopy(SEM)observedthatthefrictioncleaningtOremovepartofthefag-grainedsoilandleadcontamination丘DmasandSill"face.
(3)FlotationlaboratorystudiesIII
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