A pilot study for reclamation of a combined rinse from a nickel-plating operation using a dual-membrane UF/RO process

A pilot study for reclamation of a combined rinse from a nickel-plating operation was conducted using a dual-membrane UF/RO process. The pilot plant has a product capacity of 1.5 m 3/h. The OF unit, as a pre-treatment, was operated at 90% water recovery. The RO unit was operated with a 2:1 configura...

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Bibliographic Details
Published in:Desalination 2004-02, Vol.161 (2), p.155-167
Main Authors: Qin, Jian-Jun, Maung Nyunt Wai, Maung Htun Oo, Lee, Hsiaowan
Format: Article
Language:English
Subjects:
Applied sciences
Dual-membrane process
Electroless nickel-plating
Exact sciences and technology
Industrial wastewaters
Pollution
Reverse osmosis
Rinse water
Ultrafiltration
Wastewater reclamation
Wastewaters
Water treatment and pollution
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Summary:A pilot study for reclamation of a combined rinse from a nickel-plating operation was conducted using a dual-membrane UF/RO process. The pilot plant has a product capacity of 1.5 m 3/h. The OF unit, as a pre-treatment, was operated at 90% water recovery. The RO unit was operated with a 2:1 configuration in a feed-and-bleed mode with recirculation. Trial runs on various operating pressures and water recoveries were conducted and effect of feed pH on RO permeate quality was studied. Finding a critical pH value was explored to design the feed pH for RO process to treat this particular wastewater. A long-term run for the RO unit with an optimized 75% water recovery was later carried out to study the stability of the product and the fouling tendency of membranes. The cleaning-in-place methods were investigated for both OF and RO units. The pilot plant had successfully operated for 6 months at the time of reporting, consistently producing a high-quality product water (
ISSN:0011-9164
1873-4464
DOI:10.1016/S0011-9164(04)90051-3