| 预投加高铁酸盐强化混凝去除原水中的铅、镉 |
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| 引用本文： | 马军,梁咏梅,刘伟,余敏.预投加高铁酸盐强化混凝去除原水中的铅、镉[J].中国给水排水,2007,23(7):48-50,54. |
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| 作者姓名： | 马军 梁咏梅 刘伟 余敏 |
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| 作者单位： | 哈尔滨工业大学,市政环境工程学院,黑龙江,哈尔滨,150090 |
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| 摘 要： | 采用烧杯试验考察了预投加高铁酸盐强化混凝去除原水中铅、镉的效果。结果表明，高铁酸盐投量为5mg／L时混凝沉淀对铅、镉的去除率分别约为93％和80％；投加高铁酸盐的预处理对铅、镉的去除效果优于三价铁盐的；对铅、镉的去除率随pH值的升高而提高，高铁酸盐在较宽的pH值范围内对铅、镉均有较好的去除效果；对镉的去除较铅困难，适当提高pH值可强化高铁酸盐对镉的去除效果。
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| 关 键 词： | 高铁酸盐 铅 镉 硫酸铝 |
| 文章编号： | 1000-4602（2007）07-0048-04 |
| 修稿时间： | 2006-10-17 |
Ferrate Pretreatment for Enhancing Removal of Lead and Cadmium from Water |
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| MA Jun,LIANG Yong-mei,LIU Wei,YU Min.Ferrate Pretreatment for Enhancing Removal of Lead and Cadmium from Water[J].China Water & Wastewater,2007,23(7):48-50,54. |
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| Authors: | MA Jun LIANG Yong-mei LIU Wei YU Min |
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| Affiliation: | School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | Jar tests were conducted to investigate the removal effect of lead and cadmium from source water by ferrate pretreatment. The results show that when the ferrate dosage is 5 mg/L, the coagulation and sedimentation can remove 93% of lead and 80% of cadmium respectively. The removal efficiency achieved by ferrate is better than by ferric salts. The removal rates of lead and cadmium increase with pH value rising. Ferrate pretreatment can remove the lead and cadmium effectively at a broader range of pH. Cadmium is more difficult to be removed than lead, and rising pH values can improve the removal efficiency of cadmium by ferrate pretreatment. |
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| Keywords: | pH |
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