应用强化混凝过程控制水中剩余腐殖酸与残留铝  

Control of Residual Humic Acid and Residual Aluminium in Water with Enhanced Coagulation

作　　者：李明[1] 曾光明[1] 张盼月[1] 曲云欢[1] 蒋剑虹[1] 蒋明[1] 

机构地区：[1]湖南大学环境科学与工程学院,长沙410082

出　　处：《环境科学》2006年第10期2057-2060,共4页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2001AA644020;2003AA6441010;2004AA649370);国家杰出青年科学基金项目(50225926;50425927);中国博士后科学基金项目(2004036127)

摘　　要：为达到最大的腐殖酸去除和最小的铝残留，采用了强化混凝技术，研究了各因素对混凝过程的影响．实验结果表明，在20℃，pH为6～6．5，AlCl3投加量为0．5×10^-3mol／L的条件下，控制水中的剩余腐殖酸在0．04cm^-1以下，并能同时有效控制残留铝在0．1mg／L左右．加入0．01mol／L的CaCl2对混凝效果有一定的促进作用．同时由于原水中悬浮颗粒随季节变化，模拟了不同投量的高岭土对腐殖酸去除过程的影响．Control of residual humic acid and residual aluminium in water with enhanced coagulation was investigated. The influence of various factors on the coagulation was studied,in order to reach the maximum humic acid removal and the minimum aluminium residue simultaneously. Results showed that residual humic acid was controlled below 0.04 cm^-1 and residual aluminium kept at about 0.1 mg/L in water with pH value between 6 and 6.5, the AlCl3 dosage of 0.5× 10^-3tool/L, under the temperature of 20℃. Addition 0.01 mol/L of CaCl2 could improve the enhanced coagulation effect. Because the suspended granule concentration changes with seasons, the influence of the kaoline dosage on the humic acid removal process was studied.

关 键 词：强化混凝 腐殖酸 残留铝 CACL2 高岭土 

分 类 号：X703.5[环境科学与工程—环境工程]