Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (10): 140-144.

• Environment Science & Technology • Previous Articles     Next Articles

Treatment of Dyeing Effluent by Coupling Ultrasonic Field with Aerated Bio-Packing Tower

Zou Hua-sheng  Yan Xiao-man  Li Min-le   

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2009-03-12 Revised:2009-04-16 Online:2009-10-25 Published:2009-10-25
  • Contact: 邹华生（1957-），男，教授，博士，主要从事化工技术和环境工程技术研究． E-mail:cehszou@scut．edu．cn
  • About author:邹华生（1957-），男，教授，博士，主要从事化工技术和环境工程技术研究．
  • Supported by:

    广东省科技攻关项目（2002C31629）;广州市科技攻关项目（200723-E0311）.

PDF

1164

Abstract:

A continuous ultrasonic reactor coupling with an aerated bio-packing tower was adopted to treat the firstorder dyeing effluent, and the removals of chemical oxygen demand （CODcr） and ehroma with different combined technologies were then analyzed and compared. The results show that the combined technology of biotreatment- （ ultrasonic ＋ active carbon） -biotreatment is most effective in the treatment of dyeing effluent, and that, after being sequentially processed with a biological treatment for 7 h, an ultrasonic ＋ active carbon treatment combining four ultrasonic frequencies of 60, 80, 100 and 125 kHz for 2h, and a biological re-treatment for 20h, the effluent with an initial CODcr of 600 - 1000 mg/L and an initial chroma of 320 meets the first-grade discharge standard of GB 4287-- 1992, with a COOcr removal of about 90% and a chroma removal of about 95%

Key words: ultrasonic, dyeing effluent, aerated bio-packing tower, active carbon