吹脱法去除铜氨络合废水中氨氮的试验研究

60Vol.32No.12006吹脱法去除铜氨络合废水中氨氮的试验研究孙长顺金奇庭金炎龙郭新超(,710055)针对含有铜氨络合离子([Cu(NH3)4]2+)的废水,采用吹脱工艺去除其中的氨氮污染物理论分析了溶液的pH铜氨络合离子浓度与游离氨在总氨氮中所占比例之间的关系通过试验研究了pH气水比和过塔风速对吹脱效率的影响结果表明,在水温15,铜氨络合废水起始氨氮浓度200mg/L,气水比4000,pH10.8时,经循环吹脱后,氨氮去除率达96%氨氮铜氨络合离子吹脱,,,40~50mg/L,200mg/L,[1,2],[Cu(NH3)4]2+,,[3],,,,,11.11(1)400mm,1800mm;30mm8mm,1000mm1.2pHS3CpHpHS3C,NH3-N,,200mg/L22.1pH,(NH3)(NH+4),pH,pH,:[NH3][NH3]+[NH+4]+[Cu(NH3)2+4]100%=11+K2Kw10-pH+4K1KspKw210-pH2[Cu(NH3)2+4]34100%(1)K1=471012,K2=16510-5,Ksp=2.210-20(1)22,[Cu(NH3)4]2+=0,pH,pH11,90%,pH,[Cu(NH3)4]2+,pH=10,[Cu(NH3)4]2+=WATER&WASTEWATERENGINEERINGVol.32No.12006612mol/L,24%,[Cu(NH3)4]2+=0.2mol/L,58%[Cu(NH3)4]2+,,200mg/L,[Cu(NH3)4]2+,,2pH2.2pH,130min,,15,2.8m/s,4000,pH130min,pH,33pH3,pHpH=10.8,,pH,pH=9.3,122mg/L,41%,pH,pH=10.8,7.5mg/L,96%pH12,96.5%[Cu(NH3)4]2+[4]pH,,pH10.82.3pH=11,2.8m/s,444,pH,4000,,2000,43mg/L,80%,,4000,94%6000,,,4000,,,,[5],10,2489m3/m3,201656m3/m3,,1.5~24000,4[6]2.45,2.8m/s4.4m/s,(WATER&WASTEWATERENGINEERING62Vol.32No.120065),3500,,(6)56(3500)5,4.4m/s,2.8m/s4.4m/s,6,,,,,;,,,,3500,4.4m/s,114min6.6mg/L,,2.8m/s37mg/L,,,,,,,3(1),,(2),pHpH10.8,200mg/L,,130min,96%,(3),4000,(4),参考文献1,,..,2000,:76~772,.Cu(NH3)2+4.,2002,28(4):207~2093,,..(),2003,27(5):59~624,..:,19985..2.:,19866,.,,2001,27(6):20~24:710055:[phone]Email:[e-mail]:20050707:20050929厦门海水冲厕工程已取得预可行性研究成果,,,35%,760m3,(丹丹)WATER&WASTEWATERENGINEERING