Removal of Heavy Metals in Municipal sludge by Using Acetic Acid-H2O2- Ferrite Way
Removals of copper and zinc from municipal sludge from Tianjin Dongjiao Sewage Treatment Plant by using acetic acid -H2O2 way and the removals of heavy metals from municipal sludge extract fluid by using improved acetic acid-ferrite way were studied in experiment. The better technique condition to remove copper and zinc was that the quality concentration of acetic acid was 2mol/L, the ratio of sewage sludge, H2O2 and acetic acid was 1:2:50, the reaction time 4 hours in room temperature, and the removal rates of copper and zinc were over 95％. Using improved ferrite way and lime milk as neutralization, Cu, Zn, Cr, Ni, Cd, Pb could be removed from municipal sludge filtrate caused by acetic acid-H2O2, the removal rates of Cu, Zn, Cr, Ni, Cd, Pb were 94％, 98％, 86％, 92％, 89％, 99％ and the filtrate could be dicharged legally. The best technique condition was that the initial concentration of FeCl3 /FeSO4 was 0.10/0.05mol/L, the added Fe2+:Fe3+（mol value）=1:2, Fe3+/Mn+ (Cu2+,Zn 2+)=10, the pH value was 9, reaction temperature was room temperature.
Removal of Heavy Metals Municipal Sludge Acetic Acid-H2O2 Way Improved Ferrite Way
Zu-wei Wang Shi-meng Wang
Tianjin Key Lab.of Water Environment and Water Resource,College of Urban and Environment Science,Tianjin Normal University ;Tianjin300387
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）