| 城市污水磁化絮凝-高梯度磁分离除磷研究 |
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| 引用本文： | 刘吉生,黄自力,肖松文,胡岳华.城市污水磁化絮凝-高梯度磁分离除磷研究[J].矿冶工程,2003,23(5):24-26. |
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| 作者姓名： | 刘吉生 黄自力 肖松文 胡岳华 |
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| 作者单位： | 1.中南大学资源加工与生物工程学院, 湖南长沙, 410083;
2.长沙矿冶研究院, 湖南长沙, 410012 |
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| 基金项目： | 国家杰出青年科学基金 (5992 541 2 )资助项目 |
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| 摘 要： | 采用磁化絮凝-高梯度磁分离方法处理城市污水, 研究了磁种用量、磁场强度、混凝剂用量、污水pH 值和流速等工艺参数对除磷效果的影响。在磁场强度为500 kA/m, 磁种用量为0.3 g/L, 混凝剂硫酸铝用量为200 mg/L, 助凝剂PAM 用量为2 mg/ L, 污水pH 值为6, 流速为3.14 cm/ s 时, 磷和COD 的去除率分别为98.35%和70.8%, 净化水含磷0.049 mg/ L, COD 28.6 mg/ L。
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| 关 键 词： | 城市污水 磁化絮凝 高梯度磁分离 除磷 |
| 收稿时间： | 2003-05-20 |
| 修稿时间： | 2003年5月20日 |
Removal of Phosphate from Urban Sewage by Magnetic Flocculation and High Gradiant Magnetic Separation |
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| LIU Ji-sheng,HUANG Zi-li,XIAO Song-wen,HU Yue-hua.Removal of Phosphate from Urban Sewage by Magnetic Flocculation and High Gradiant Magnetic Separation[J].Mining and Metallurgical Engineering,2003,23(5):24-26. |
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| Authors: | LIU Ji-sheng HUANG Zi-li XIAO Song-wen HU Yue-hua |
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| Affiliation: | 1.School of Resources Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China;
2.Changsha Research Institute of Mining and Metallurgy, Changsha 410012, Hunan, China |
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| Abstract: | Urban sewage is treated by magnetic flocculation and high gradient magnetic separation. The technical parameters such as magnetic feed dosage, magnetic field intensity, coagulating agent dosage, pH value and flow velocity are investigated. At a magnetic field intensity of 500 kA/m, a magnetic feed dosage of 0.3 g/L, a coagulating agent(Al 2O 3) dosage of 200 mg/L, a filter-aid(PAM) dosage of 2 mg/L, a sewage pH of 6 and a flow velocity of 3.14 cm/s, phosphate and COD removeal rates are 98.35% and 70.8%, respectively, with a phosphate content of 0.049 mg/L and COD content of 28.6 mg/L in purified water. |
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| Keywords: | urban sewage magnetic flocculation high gradient magnetic separation removal of phosphate |
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