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doi:10.3969/j.issn.1002-154X.2010.06.008沈巧莲(,321002) ,,。,;,、、,,,。 :2010-04-26:(1965~),,,,、、。 Chromium-containingElectroplatingWastewaterTreatmentandRecyclingResearchShenQiaolian(JinhuaTVUniversity,ZhejiangJinhua321002)Abstract Chromiumanditscompoundsarewidelyusedinelectroplatingindustry.Generatealargenumberofchromium-containingwastewater.Andbecomeamajorenvironmentalpollutants.Inthispaper,testsofseveralchro-mium-containingwastewatertreatmentmethodsarecompared.ClarifytheadvantagesanddisadvantagesofeachmethodandtheactualvalueofProcess.Atthesametimeasausefulresourceforchromium.Throughdifferentproces-sestobesodiumchromate,potassiumdichromate,chromeyellow,etc.Forrecycling.Thisnotonlyreflectstheenvi-ronmentalbenefitsof.Alsomadesomeeconomicbenefits.Keywords electroplatingwastewater chromium treatment recycling ,620~150mg/L,200~300mg/L,68~147mg/L。,63,,。。、、、、、、、,。,,:(1):150~350g/L,1.5~3.5g/L,32~5g/L。(2):180~500g/L,3~15g/L,0.6~0.9g/L,32~5g/L。(3)():225~250g/L,2.25~2.5g/L,33~8g/L。(4):250~300g/L,20g/L,6~8g/L。,、、3,—26—24620106 ChemicalIndustryTimes Vol.24,No.6Jun.6.2010。,。1 ,,,35mg/L~235mg/L,50g/L。1.1 :BaCl2+H2CrO4BaCrO4↑+2HClKsp1.6×10-10,pH6,Cr6+0.04mg/L,pH70.08mg/L。1:3.29g/L。6,27.4g。0.5L,20%NaOH13mL,pH7,13.7g,pH5,,,,32mL,,pH1,HCl,pH,,20%NaOH30mLpH10,,、、,。2.0mg/L,。:1g,1∶1,,。30g,3g。90%。1g,0.9g。2:60.5g/L,50L,pH7,175~225g,5~10min,,,,,。123g,25g。,,,,,。,2000/t,2400/t,1t124kg,248,274kg,602.8。1t60kg,64.8kg,768。33.94kg,36,。38.75%,1t387.5kg。。,,,2,,。。1.2 ,,、。,FeSO4、NaHSO3、、SO2。,,,NaOHNa2CO3,,,,,。1:pH2~3,(ORP-250-280mV),(),(),pH8.5~9,,,(,15%5%,pH8.0~8.5,2h,,),,25%~45%。。2:pH1,pH2.5,,ORP-250-280mV,5%pH,3。、,。、,15%、,、,50%,10%pH10,、,pH7,,、,。3:,1∶1,,。1.3 1:0.5g/L50L,160g,250g。10%pH7.5,,—27— 2010.Vol.24,No.6 化工时刊250g,,,155g。,,,。。,。22.1 pH1~2,(3),3h,,,,pH9,(),。,,10,91.5%,,。(,,pH4,90%,pH9,99%)。,,,,。2.2 :KAl(SO4)2.12H2O3∶1(),PAM,K2CO3-KHCO3,KOHpH12~13。1000∶1(),,。:(31.2),36,5∶4,,,,,,90%。2.3 ,,、。,,6.12,844℃,,。、。、、。:,3h,,,,pH9~9.5,(),,,(1∶1,pH7~9,),。。2.4 ,、,Cr(OH)3,Cr(OH)3Cr2O3,Cr2O3,。,,。3 ,,。:①、、;②6;③,、。30/t,23.6/kg。,10kg100,10kg240。。[1] ,,.[J].,2004,27:111~113[2] ,,.[J].,2007,23(20):57~59[3] 《》(GB21900-2008)[M].:.[4] .[J].:,2001,29(1):66[5] .Cr(Ⅵ)[J].,2006,25(3):285~288—28—化工时刊 2010.Vol.24,No.6 ·《TechnologyExperiment》
本文标题:java课程设计报告学生信息管理系统201105152
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