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Membrane Water Treatment
  Volume 10, Number 3, May 2019 , pages 239-244
DOI: https://doi.org/10.12989/mwt.2019.10.3.239
 


Pilot scale membrane separation of plating wastewater by nanofiltration and reverse osmosis
Jaehyun Jung, Bora Shin, Ki Young Park, Seyeon Won and Jinwoo Cho

 
Abstract
    Plating wastewater containing various heavy metals can be produced by several industries. Specifically, we focused on the removal of copper (Cu2+) and nickel (Ni+) ions from the plating wastewater because all these ions are strictly regulated when discharged into watershed in Korea. The application of both nanofiltration (NF) and reverse osmosis (RO) technologies for the treatment of wastewater containing copper and nickel ions to reduce fresh water consumption and environmental degradation was investigated. In this work, the removal of copper (Cu2+) and nickel (Ni+) ions from synthetic water was studied on pilot scale remove by before using two commercial nanofiltration (NF) and reverse osmosis(RO) spiral-wound membrane modules (NE2521-90 and RE2521-FEN by Toray Chemical). The influence of main operating parameters such as feed concentration on the heavy metals rejection and permeate flux of both membranes, was investigated. Synthetic plating wastewater samples containing copper (Cu2+) and nickel (Ni2+) ions at various concentrations(1, 20, 100, 400 mg/L) were prepared and subjected to treatment by NF and RO in the pilot plant. The results showed that NF, RO process, with 98% and 99% removal for copper and nickel, respectively, could achieve high removal efficiency of the heavy metals.
 
Key Words
    nanofiltration; reverse osmosis; plating wastewater; heavy metal; rejection rate
 
Address
Jaehyun Jung, Bora Shin, Jinwoo Cho: Department of Environment and Energy, Sejong University, Seoul 05006, Korea
Jae Woo Lee: Department of Environmental Engineering, Korea University, Sejong 339-700, Korea
Ki Young Park: Department of Civil and Environmental System Engineering, Konkuk University, Seoul 05029, Korea
Seyeon Won: Han-River Environment Research Center, Water Environment Chemistry Research Lab, Gyeonggi-do 12585, Korea
 

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