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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > pH调控在钢帘线废水处理中的应用王翠翠
375201110Vol.37No.5MetalProductsOctober2011doi10.3969/j.issn.1003-4226.2011.05.019pH257500、、、pH、pH。pHpH。pH8.5~9.0pH≥9.0、、、。pHX703ApplicationofpHcontrolintheprocessofsteelcord’swastewatertreatmentWANGCui-cuiHANLeiShandongSNTONSteelCordCo.Ltd.Dongying257500ChinaAbstractThewastewaterdischargedbysteelcordproductioncontainsplentyofheavymetalionslikeleadcopperzincironetc.DuringtheprocessofwastewatertreatmenttherearegapsamongtheoptimumprecipitationpHoftheoreticalcal-culationcompleteprecipitationpHandactualvaluesdifferencebetweenredissolvingphenomenonofamphotericmetalandtheoreticalvaluesanduncertaintyininjectedvolumeofalkalinematerials.TakingtheacidicwastewaterdischargedbytheelectroplatingworkshopastestobjectandusingsodiumhydroxidesolutiontocontrolthepHofsolutionstoanalyzetherela-tionshipbetweenpHcontrolandtheamountofresidualimpuritieswhentreatingelectroplatingwastewaterwithchemicalpre-cipitationmethod.ThroughexperimenttestandtheoreticalcalculationfinallyobtainingthefollowingconclusionswhenthepHis8.5~9.0theconcentrationsofdifferentmetalionsinthesupernatantmeetthenationalstandardwhenthepH≥9.0theheavymetalionssuchasleadcopperzincironetc.havecompletelyprecipitated.KeywordssteelcordelectroplatingwastewaterchemicalprecipitationmethodpHcontrol211。。10002。、。。ρPb2+0.5mg/LρZn2+2.0mg/LρCu2+0.5mg/LρFe2+Fe3+、、、。14、、、。。90%40%3。。pH。1pH、pH23。37pHpH4。22.1ICPPHS-2C。100mL、20%pHpH、ICP。2.2pH0.9~1.01。1Table1Metalion’smassconcentrationinsludgewatermg/LρCu2+ρFe2+Fe3+ρPb2+ρZn2+14.031197.5912.9731.782.3pH=14-1nlgMen+-lgKsp11nMen+Ksp5。11pHpHMen+10-5mol/L2。2pHTable2Metalion’spHinthetimeofbeginningtoprecipitateandcompletelyprecipitateCuOH2FeOH2FeOH3PbOH2ZnOH26.007.292.098.647.206.678.953.209.048.042.4ICPR0.999。pH、3pH1、2。3pH、Table3TestingresultofNaOHliquidamountwithcleanliquidanditsmetalionmassconcentrationNaOH/mLpH/mg·L-1ρCu2+ρFe2+Fe3+ρPb2+ρZn2+10.01.014.031197.5912.9731.7822.65.85.07748.850.0221.2232.76.21.27658.630.0011.7742.86.50.90525.030.006.8952.97.00.18449.400.003.0763.07.50.12154.220.000.7173.18.50.0310.690.000.0483.29.00.041.780.000.0293.39.80.020.320.000.01103.39.90.020.210.000.00114.111.00.020.120.000.01124.511.70.000.000.000.05135.012.10.010.000.000.14145.312.70.010.000.001.62155.512.80.000.000.002.13166.013.30.000.070.399.74176.113.40.010.080.459.47·47·5pH33.1pH。Fe2+Fe3+pHFeOH3。Fe3+pH2~3pH3~7pH=7FeOH2FeOH3。pH=92。2Cu2+Pb2+Zn2+pH3。3.2pH。pHNaOHpH。pH4pH>12PbZn6。pH8.5~9.0pH≥9.0、、、pH6~9。pH。。4pHpH。pH8.5~9.0pH≥9.0、、、。、。。。1.J.20076340-343.2.J.2008639.3.J.2004269-71.4.J.1996222-23.5.M.2008425-426.6.pHJ.200818-10.2011-08-021983。1982。·57·
本文标题:pH调控在钢帘线废水处理中的应用王翠翠
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