Journal of South China University of Technology (Natural Science Edition) ›› 2018, Vol. 46 ›› Issue (6): 122-129.doi: 10.3969/j.issn.1000-565X.2018.06.017

• Environmental Science & Technology • Previous Articles     Next Articles

Combination of Coagulation-Flocculation and Membrane Processing in the Optimization of Secondary Fiber Wastewater Treatment Using Taguchi Method
 

 LI Youming XU Yanmei HOU Yi    

  1.  State Key Laboratory of Pulp and Paper Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2017-05-25 Revised:2017-08-29 Online:2018-06-25 Published:2018-05-07
  • Contact: 侯轶( 1973-) ，女，教授级高级工程师，博士生导师，主要从事高浓工业有机废水的高效处理等研究 E-mail:ceyhou@scut.edu.cn
  • About author:李友明( 1957-) ，男，教授，博士生导师，主要从事制浆造纸清洁生产技术、造纸化学品等研究
  • Supported by:
      Supported by the National Natural Science Foundation of China( 21476091) ， the National Key R ＆ D Project of China( 2017YFB0307901) and the Science and Technology Planning Project of Guangdong Province( 2015A020215009) 

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Abstract: The effects of individual membrane processing ( MP) and MP combined with coagulationflocculation ( CF) on the properties of secondary fiber wastewater had been investigated in this study． Based on taguchi method and analysis of variance ( ANOVA) ，four independent variables including PAC dosage，CPAM dosage，pH and temperature were selected as influence factors． The factors were optimized as PAC dosage 1000mg/L，CPAM dosage 20mg/L，pH 9 and temperature 25 ℃． At the optimal conditions，COD was declined to 441 mg/L，TSS was 4NTU，SV was 46，colority was 23 Units PtCo． Compared with individual MP， the combination of CF and MP has a higher flux at 70% and a stronger removal of COD at 60. 2% after 10 mins’MP， indicating that the combination of CF-MP improves the overall performance for the secondary fiber wastewater treatment． 

Key words: pretreatment, membrane processing, coagulationflocculation, secondary fiber wastewater, Taguchi method

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