| 基于实时控制的电絮凝-气浮处理重金属清淤尾水 |
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| 引用本文： | 徐海音,杨朝晖,曾光明,罗远玲,黄兢,汪理科,宋佩佩.基于实时控制的电絮凝-气浮处理重金属清淤尾水[J].中国环境科学,2016,36(3):786-792. |
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| 作者姓名： | 徐海音 杨朝晖 曾光明 罗远玲 黄兢 汪理科 宋佩佩 |
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| 作者单位： | 1. 湖南大学环境科学与工程学院, 湖南 长沙 410082;
2. 湖南大学环境生物与控制教育部重点实验室, 湖南 长沙 410082;
3. 长沙环境保护职业技术学院, 湖南 长沙 410004 |
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| 基金项目： | 国家自然科学基金资助项目(51578223、51521006);国家水体污染控制与治理科技重大专项(2009ZX07212-001-02) |
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| 摘 要： | 针对重金属清淤尾水具有污染物浓度高、水质波动大、沉淀性能差等特点,选取pH值和浊度作为实时监测因子,并借助沉淀模拟和数据拟合等手段,建立了比电流与镉残留量之间的实时控制响应模型.结果表明:铝-电絮凝-气浮兼有中和pH值和改善泥水分离的优点,实现了重金属铅、镉和锌的达标排放;此外实时控制策略节省了35.8%的材料消耗和43.4%的电能消耗以及降低了47.9%的产泥量.
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| 关 键 词： | 电絮凝 气浮 清淤尾水 实时控制 重金属 |
| 收稿时间： | 2015-08-20 |
Treatment of residual water from heavy metals contaminated sediment dredging by electro-coagulation-flotation based on real-time control strategy |
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| XU Hai-yin,YANG Zhao-hui,ZENG Guang-ming,LUO Yuan-ling,HUANG Jing,WANG Li-ke,SONG Pei-pei.Treatment of residual water from heavy metals contaminated sediment dredging by electro-coagulation-flotation based on real-time control strategy[J].China Environmental Science,2016,36(3):786-792. |
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| Authors: | XU Hai-yin YANG Zhao-hui ZENG Guang-ming LUO Yuan-ling HUANG Jing WANG Li-ke SONG Pei-pei |
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| Institution: | 1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;
2. Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China;
3. Changsha Environmental Protection College, Changsha 410004, China |
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| Abstract: | Residual water from heavy metals contaminated sediment dredging had high concentrations of heavy metals, fluctuant water-quality and poor sedimentation. Electro-coagulation-flotation with aluminium anode (Al-ECF) was applied to treat residual water. First, pH and turbidity were selected as monitoring factors of real-time control. Then, a real-time control response model of ratio current and residual cadmium (Cd) was established by the tools of precipitation simulation and data fitting. Experiment results showed that Al-ECF could neutralize pH and improve separation performance and lead (Pb), Cd and zinc (Zn) of effluent met the discharge standards. Additionally, the real-time control strategy could save 35.8% of anode material and 43.4% of electricity power and reduce 47.9% of sludge production. |
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| Keywords: | electrocoagulation flotation residual water of dredging real-time control heavy metals |
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