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.
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.
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. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(3): 786-792.
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