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Response surface methodology optimize nanofiltration membrane advanced treatment of vitamin C wastewater

Authors： ZHANG Tingting1,XU Ke1*,REN Hongqiang1,DING Lili1, GENG Jinju1,ZHAO Fei 1,TAO Yingyang2

Units： 1.State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, China; 2.the Anhui Wanwei Corporation, Caohu 238000, China

KeyWords： nanofiltration membrane; vitamin C wastewater; multiple response optimization

ClassificationCode：X5

year,volume(issue):pagination： 2014,34(5):89-95

Abstract：

Vitamin C wastewater with high concentrations of organic matter and salinity emissions a great quantity, so it is of great significance to reuse it. The average concentration of COD, TOC and conductivity is 160mg/L, 18.21mg/L and 18.62ms/cm. The removal of COD, TOC and desalination is 93.75%, 95.67% and 38.01%. The quality of the permeate water has reached the reclaimed water quality. By means of the Box-Behnken response surface methodology experiment, influence significance and interactions of three factors (operating pressure, P; feed temperature, T; feed flow rate, Q) were study, and regression models were established to control membrane fouling in vitamin C wastewater reclamation. The optimum conditions of NFW membrane were pressure of 966kPa, T of 24℃ and feed flow rate of 456L/h. The experiment results show that the optimum fits the real results.

Funds：

国家自然科学基金青年基金项目(No.51108230)；国家863计划课题(No.2009AA063901).

AuthorIntro：

张婷婷(1989-),女,南京大学环境学院硕士研究生,主要从事废水膜处理技术膜污染研究. E-mail：zttssmile@163.com.

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