Development of pilot scale nanofiltration system for yeast industry wastewater treatment

Journal of Environmental Health Science Engineering

Majid Peyravi¹  Mohsen Jahanshahi¹  Ahmad Rahimpour¹ 

[1] Faculty of Chemical Engineering, Babol University of Technology, Babol, Iran

关键词: Wastewater treatment;    Pilot scale;    Membrane process;    Nanofiltration;   

Others  :  805354
DOI  :  10.1186/2052-336X-12-55

 received in 2013-04-17, accepted in 2014-02-26,  发布年份 2014

【 摘 要 】

The treatment of the yeast industry wastewater was investigated by nanofiltration (NF) membrane process on a pilot scale. Two wastewaters were used as feed: (i) dilute wastewater with COD 2000 mg/L and (ii) concentrate wastewater with COD 8000 mg/L. The permeate flux, COD retention, color and electrical conductivity (EC) removal were evaluated in relation to trans-membrane pressure and long-term filtration. A linear growth in permeate flux was found with increasing in trans-membrane pressure for wastewaters. In addition, the COD retention, color and EC removal increased with trans-membrane pressure enhancement. The results obtained from the long-term nanofiltration of dilute wastewater indicated that the permeate flux decreased from 2300 L/day to 1250 L/day and COD retention increased from 86% to 92%. The quality of the permeate in term of COD is lower than the discharge standard in river (200 mg/L). Thus, this process is useful for treatment of wastewaters produced by yeast industry.

【 授权许可】

   
2014 Rahimpour et al.; licensee BioMed Central Ltd.

【 图 表 】

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