Study on the Advanced Treatment and Reuse of Dyeing Wastewater Using Polyamide Nanofiltration Membrane

Abstract:

The microfiltration (MF) and nanofiltration (NF) integrated membrane technologies were used in the advanced treatment of dyeing wastewater. The ZrO₂ MF membrane was used to remove colloidal species from the wastewater before NF. The effects of permeate flux, COD_Cr rejection, the removal effects of ammonia nitrogen and total phosphorus by polyamide NF membrane were investigated. The results indicated that the turbidity removal efficiency was 76.7%~95.0%. COD_Cr rejection was range from 33.3% to 54.9% by MF. After the process of NF, COD_Cr rejection was between 66.65% and 91.18%. The removal effects of both color and turbidity were 100%. The value of pH was 6~7. The COD_Cr was smaller than 60mg•L^-1. The value of ammonia nitrogen was smaller than 7mg•L^-1. The value of total phosphorus was smaller than 0.5mg•L^-1. It came up to the quality standard of recycling raw water for industrial uses. It can be used as the water for industrial.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 1843-1846
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.1843
• Online since: October 2011
• Authors: Jiang Quan Ma, Qi Zhang, Qing Ling Lu, Xiao Bing Gan, Jun Hao Xia, Zi Ding Shen
• Keywords: Advanced Treatment, Dyeing Wastewater, Permeate Flux, Polyamide Nanofiltration Membrane

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DOI: 10.1016/j.desal.2005.04.017