| 海藻酸钠强化超滤含铜废水 |
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| 引用本文： | 魏东洋,王飞,刘广立,黄锦旭.海藻酸钠强化超滤含铜废水[J].环境科学与技术,2011,34(4):77-80,103. |
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| 作者姓名： | 魏东洋 王飞 刘广立 黄锦旭 |
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| 作者单位： | 1. 华南环境科学研究所,广东,广州,510655;中山大学环境科学与工程学院,广东,广州,510275
2. 中山大学环境科学与工程学院,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金，中山大学后备重点基金 |
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| 摘 要： | 聚合有机物强化超滤技术因具有操作压力低、膜通量大且截留效果好的优点,而受到了广泛的关注.文章研究了天然有机物海藻酸钠强化超滤去除模拟含铜废水的特性及影响因素,试验结果表明,当海藻酸钠投加量为100 mg/L.pH=6.0,温度为25℃,Cu2+初始浓度为10mg/L时,MWCO(截留分子量)为4 kDa.6 kDa,1...
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| 关 键 词： | 海藻酸钠 超滤 含铜废水 PEUF |
Alginate Enhanced Ultrafiltration for Treatment of Copper Wastewater |
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| WEI Dong-yang,WANG Fei,LIU Guang-li,HUANG Jin-xu.Alginate Enhanced Ultrafiltration for Treatment of Copper Wastewater[J].Environmental Science and Technology,2011,34(4):77-80,103. |
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| Authors: | WEI Dong-yang WANG Fei LIU Guang-li HUANG Jin-xu |
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| Institution: | WEI Dong-yang1,2,WANG Fei2,LIU Guang-li2*,HUANG Jin-xu2(1.South China Institute of Environmental Science,Ministry of Environmental Protection,Guangzhou 510655,China,2.School of Environmental Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China) |
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| Abstract: | Much attention has been paid on the polymer enhanced ultrafiltration technology due to its advantages of low operation pressure,high flux and high heavy metal rejections.Effect factors and characteristics of alginate-enhanced ultrafiltration to treat copper wastewater were investigated.Experimental results showed that UF membranes with MWCO 4 kDa,6 kDa,10 kDa,30 kDa,50 kDa and 70 kDa could remove the copper ion with efficiency of 86%～95% under the conditions of initial Cu2+ concentration 10 mg/L,alginate concentration 100 mg/L,pH 6.0 and treatment at 25℃.However,Cu2+ rejection rate decreased as MWCO of UF membranes increased and pH was dropped.UF membrane with MWCO 30 kDa could only reject 42% of total Cu2+ at pH 3.80% of total membrane resistances came from the pore-blocked and concentration polarization during the filtration process.More than 90% of total copper in the concentrated solution could be recovered by increasing pH value to 13 in order to form Cu(OH)2 sediment. |
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| Keywords: | PEUF |
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