2014, Volume 16, Issue 7
Strategic Study of CAE >> 2014, Volume 16, Issue 7
Study on the performance of EDI device in dealing with Ni2 solution with dilute departments filled with cation exchange resins
Engineering Research Center of Membrane & Water Treatment Technology，Ｍinistry of Education ，Zhejiang University，Hangzhou 310027，China
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Abstract
Study on the feasibility of EDI device, whose dilute departments were filled with cation exchange resins and feed water was low concentration Ni2 solution, for the treatment of low-concentration heavy-metal wastewater. The effects of operating voltage and dilute flow flux on the separation performances EDI processes were investigated. With the feed solution whose Ni2+ concentration was 50 mg·L-1 and pH was 4.5, the results show that the out dilute Ni2+concentration was lower than 2 mg·L-1 and the Ni2+ concentration of out concentrate could higher than 900 mg·L-1 when operating voltage was 25 v and dilute flow flux was 20 L·h-1.
Keywords
Electrodeionization (EDI) ; cation exchange resin ; heavy-metal ; Ni2
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