| pH和腐殖酸对高铁酸盐去除水中铅、镉的影响 |
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| 引用本文： | 梁咏梅,刘伟,马军.pH和腐殖酸对高铁酸盐去除水中铅、镉的影响[J].哈尔滨建筑大学学报,2003(5). |
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| 作者姓名： | 梁咏梅 刘伟 马军 |
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| 作者单位： | 哈尔滨工业大学市政环境工程学院，哈尔滨工业大学市政环境工程学院，哈尔滨工业大学市政环境工程学院，黑龙江 哈尔滨150090，黑龙江 哈尔滨150090，黑龙江 哈尔滨150090 |
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| 基金项目： | 哈尔滨工业大学校基金(HIT.2001.53). |
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| 摘 要： | 利用静态试验研究了 pH 和腐殖酸对高铁酸盐预处理去除铅、镉的影响.结果表明:高铁酸盐预处理对水中微量铅、镉有良好的去除效果,1mg/L 高铁酸盐可使铅、镉的去除率比单纯硫酸铝混凝的铅、镉去除率提高20％左右.中性和碱性条件下铅、镉的去除率均高于酸性条件,铅的去除率高于镉.水中腐殖酸浓度升高使铅的去除率降低,对镉的去除率影响不大,高铁酸盐能够部分消除腐殖酸的影响,提高铅的去除率.
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| 关 键 词： | 高铁酸盐 铅 镉 吸附 重金属 |
Effect of pH and humic acid on removal of lead and cadmium by combined ferrate pretreatment and alum coagulation |
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| LIANG Yong-mei LIU Wei MA Jun.Effect of pH and humic acid on removal of lead and cadmium by combined ferrate pretreatment and alum coagulation[J].Journal of Harbin University of Civil Engineering and Architecture,2003(5). |
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| Authors: | LIANG Yong-mei LIU Wei MA Jun |
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| Abstract: | A static test was conducted to evaluate the effect of pH and humic acid on removal of trace lead and cadmium from the water by ferrate pretreatment.It was found that the removal efficiency of lead and cadmium was promoted by 20 percent by ferrate pretreatment compared to coagulation treated with aluminium sulfate only.A better removal was achieved in neutral and basic condition than in acid condition,the removal effi- ciency of lead is higher than that of cadmium.The removal efficiency of lead decreased while the humic acid concentration increased,and the negative effect of humic acid on lead removal could be reduced to some extent by ferrate pretreatment. |
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| Keywords: | ferrate lead cadmium adsorption heavy metal |
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