| 应用强化混凝过程控制水中的剩余腐殖酸与残留铝 |
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| 中文关键词 强化混凝 腐殖酸 残留铝 CaCl2 高岭土 |
| 英文关键词 enhanced coagulation humic acid residual aluminium CaCl2 kaoline |
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| 中文摘要 |
| 采用强化混凝技术控制水中剩余腐殖酸与残留铝，以同时达到最大的腐殖酸去除和最小的铝残留为目的，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0.5×10-3 mol/L的条件下，控制水中的剩余腐殖酸在0.04 cm-1以下，并能同时有效控制残留铝在0.1 mg/L左右.加入0.01 mol/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. |
| 英文摘要 |
| 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 0.5×10-3 mol/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. |
