电凝聚处理高浓度焦化废水的研究吴克明

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:1002-1124(2005)05-0029-03                                 电凝聚处理高浓度焦化废水的研究*吴克明,潘留明,陈新丽,向 飞(,430081)   :,pH、、、NaCl,:。:;;:X760.3  :ATreatmentofcokingwastewaterwithelectro-coagulation*WUKe-ming,PANLiu-ming,CHENXin-li,XIANGFei(Dept.ofEnvironmentalandSafeEngineering,WuhanUniversityofScienceandTechnology,Wuhan430081,China)  Abstract:Thetechnologyofelectrocoagulationfortreatingcokingwastewaterwasstudiedinthispaper.ThepHvalueofcokingwastewater,thedensityofelectriccurrent,thetimeofreaction,thedosageofNaClandthedistanceoftheboard,wereinvestigated.Theresultsshowthatthewastewaterturbiditycanberemovedwellwithelectrocoagula-tion.Keywords:electro-coagulation;cokingwastewater;wastewatertreatment:2005-03-10:(2001B19003):(1964-),,,(Concepción),,,,。  、。,。[1],。,,,COD。。。1 1.1 ,,,1。1 (NTU)120~180140~150COD/mg·L-13000~35001.2 ;DBJ-623;pHS-25pH;KL-1;GDS-3B;721。COD;GDS-3B。  1. 2. 3. 4. 5. 6.1 KL-12 ,1。。pH、、。2.1 250s,40min,NaClSum116No.5                    化学工程师Chemical Engineer                    20055DOI:10.16247/j.cnki.23-1171/tq.2005.05.0121g·L-1,4,pH6,,,2。/A2 2,COD,1.50A,,COD,。,,,,。,,Al3+,Al3+,。。[Al(H2O)6]3+Al(OH)3·(H2O)3,。[Al(H2O)6]3++OH[Al(OH)(H2O)5]2++H2O[3,4]。,。Al3+,,,,,,。,1.5A。2.2 1.50A,250s,NaCl1g·L-1,4,pH6,,3。/min3 3,,、COD,,,,,。,,,50min,,,50min。2.3 NaCl,NaCl。250s,1.50A,4,pH6,NaCl,50min,,4。4 NaCl、NaCl,,。,NaCl,,,。4,2g·L-1,,。,NaClClO-,[2],。,NaCl2g·L-1。2.4 pH250s,50min,1.5A,NaCl2g·L-1,4,pH,。5。5 pH,pH30吴克明等:电凝聚处理高浓度焦化废水的研究*             20055。pH,,,,;pH,,。5,pH7。,。:AlAl3++3e;Al3++6H2O[Al(H2O)6]3+:2H2O+2eH2+2OH-:2Al+6H2O2Al(OH)3+3H2,H+,H+OH-Al3+OH-,,Al(OH)3,;OH-,,H2O,,Al3+,Al(OH)3,。2.5 pH7,50min,1.5A,NaCl2g·L-1,4,,,6。/min6 6,。,,,,。2min,、COD,2min。2.6 pH、、、NaCl,,2。2 /mm321610.7COD/%14.0018.7519.25  2,。,,。,,。,10.7mm。3 (1),:pH7;1.5A;50min;2min;NaCl2g·L-1;10.7mm。(2),COD,COD,,,COD,COD。(3)、、、,,。(4),,。   [1] ,.[J].,2004,29(1):51-54.[2] ,,.PVA[J].,2003,29(4):218-221.[3] .[J].,1989,(5):1-33.[4] StuckiP.Electrochemicalwastewatertreatmentusinghighovervoltageanodes[J].J.ApplyElectrochemistry,1991,21(3):34-38.[5] PatermarakisG.Infectionofwaterbyelectrochemicaltreatment[J].WaterResearch,1990,24(2):67-73.3120055              吴克明等:电凝聚处理高浓度焦化废水的研究*

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