化学法处理高浓度电镀废水鲁显位

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:1004-7204(2004)01-0011-04鲁显位,王金泉,陈广桥,周永毅(广东正本水处理有限公司,广东510030):分析、总结了采用化学法处理高浓度电镀废水中的含氰废水、含镍废水、含铬废水和含酸废水的工程设计、调试和实际运行情况。实践表明,化学法处理高浓度电镀废水是行之有效的,而用PH/ORP计控制好废水处理中的化学反应是稳定运行的关键。:高浓度电镀废水;PH/ORP控制;氰、镍、铬:X703.1       :AChemicalMethodforTreatmentofHighConcentrationElectroplatingWastewaterLUXian-wei,WANGJin-quan,CHENGuang-qiao,ZHOUYong-yi(GuangdongCompleteMachineryEquipmentBureau,Guangzhou510030,China)Abstract:Chemicalmethodfortreatmentofhighconcentraationelectropiatingwastewaterissummarized.Itisclearthatchemicalmethodfortreatmentofhighconcentrationelectroplatingwastewateriseffective.Whatmat-tersisthecontrolofchemicalreactswithPH/ORPinstrument.Keywords:highconcentrationelectroplatingwastewater;PH/ORPcontrol;cyanide;nikel;chrome,。。、,,,,,。,、,,。:、、。、,,。,,、。1 50m3/h,12m3/h,16m3/h,6m3/h,16m3/h;1。1 /mg·l-1/mg·l-1206~4121.0(CN-)50~2380.545~1800.524~510.55~200.5pH1.0~4.56~92 2.1 1。:,。,,、,,。:2003-09-22:(1973-),,,:、。·11···              《环境技术》        200411   ,,,pH2~3,。,,NaOH,PAM,,。,pH,,,,,,。,,,,。2.2 2.2.1 :,ClO-,,pH11~12,:CN-+ClO-+H2O※CNCl+2OH-(1)CNCl+2OH-※CNO-+Cl-+H2O(2),CNO-N2CO2:2CNO-+3ClO-+H2O※2CO2←+N2←+3Cl-+2OH-(3)2#,10.0m×2.5m×2.6m,55m3,4.5h;,2.0m×2.0m×2.6m,8m3,45min,。2.2.2 :(pH2~3),pH8,Cr(OH)3,。:2H2Cr2O7+3H2SO4+6HSO3-※2Cr2(SO4)3+3SO42-+8H2O(4)Cr2(SO4)3+6NaOH※3Na2SO4+2Cr(OH)3↑(5)3#,10.0m×1.5m×2.6m,32m3,5h;,1.5m×1.5m×2.6m,5m3,50min,。。2.2.3 :,,,、。4#,10.0m×3.5m×2.6m,77m3,5h;3.0m×2.5m×2.6m,16m3,60min,;4.2m×3.2m×3.5m,32m3,2m3/m2.h;3m×2.2m×3.5m,16m3。1,40m2。·12·20041        《环境技术》              ··2.2.4 :,pH8.5,,。1#,10.0m×3.5m×2.6m,77m3,5h;,2.0m×2.0m×2.6m,12min,;,2.0m×2.0m×2.6m,12min,;,6.8m×4.2m×3.5m,75m3,1.5m3/m2·h;,3.0m×3.5m×3.5m,28m3;1,40m2。3 3.1 ,PH/ORP,PH/ORP。ORP,ORP,。,CN-Cr6+ORP,。:,PH111,PHNaOH;,ORP1400mv,。10%,,。,PH28,ORP2650mv,,。。:,PH3PH2.5~3,ORP3(NaHSO3),ORP3220mv。,,。:,NaOHpH,PH49.5,,15min,PAM,,。:,NaOHpH8~9,,,,“DT”,20ppm,,,。,,。,PH5,,pH6.5~8.5。3.2 ,,。2。2 716716717717718718pH4.46.261.76.651.27.111.37.171.88.032.06.81/(mg·L-1)273.60.34331.70.17240.5-412.10.14206.5-368.2-/(mg·L-1)58.90.22143.20.1250.60.11185.20.18238.00.1691.30.12/(mg·L-1)84.20.08126.00.1089.4-45.80.04142.70.12180.9-/(mg·L-1)31.80.1035.3-38.30.0736.0-35.4-29.50.08/(mg·L-1)16.1-6.80.3417.40.1714.9-20.50.2816.90.28/(mg·L-1)89.838.50109.251.3396.244.91115.548.1283.435.2986.625.66  :CN-,“-”。·13···              《环境技术》        200414 4.1 ,PH/ORP,PH/ORP,PH/ORP,,。4.2 ,,,,。,。4.3 ,,316L,UPVC,。4.4 ,,,,60°。,。4.5 ,,,,,。4.6 ,,,,。4.7 ,,。,,,,,。:[1] ,.[J].,1998,20(1):5-6.[2] ,,,.ORP[J].,2003,19(5):20-22.(上接第9页)  7、8,z,B。7:,50μs,()。(80μs),,。(z/B=0.5),[4]。;(z/B=0),。8:,,。,,。5 (z/B=0.5),,(z/B=0),。,(3),。:[1] G.C.Sih.Impactresponseofaplanecrackinextension[J].Int.J.Solids&Structures,1972(8):977-993.[2] ,.[J].,1994,24(4):459-473.[3] ,.Hopkinson[J].,1995(2):16-21.[4] ,.[J].,1997,15(3):379-381.·14·20041        《环境技术》              ··

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