Fouling Inhibition of Membrane Separation by H₂O₂/UV Pre-oxidation for Color Filter Effluent Reuse

ABSTRACT

This study evaluated the feasibility of treating color filter effluent by H₂O₂/UV pre-oxidation and membrane postseparation for in-house reuse. The effluent qualities were TOC of 5.8–34 mg/L, color of 46–138 ADMI, and conductivity of 1020–3500 μS/cm. Although the RO separation could directly remove TOC, color, and conductivity effectively, the serious fouling problem still existed. Through H₂O₂/UV pre-oxidation (UV = 13 W, H₂O₂ = 200 mg/L), organic and biofouling were inhibited to increase the normalized flux decline from 5% to 77%. That is, H₂O₂/UV pre-oxidation could mitigate the permeate flux decline as well as to improve the water quality for water reuse.

KEYWORDS:

• Color Filter
• Fouling
• H₂O₂/UV
• Membrane
• Separation
• Water Reuse