华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (6): 122-129.doi: 10.3969/j.issn.1000-565X.2018.06.017

• 环境科学与技术 • 上一篇    下一篇

田口法优化二次纤维废水膜前混凝预处理工艺

李友明 徐艳梅 侯轶   

  1. 华南理工大学 制浆造纸工程国家重点实验室,广东 广州 510640
  • 收稿日期:2017-05-25 修回日期:2017-08-29 出版日期:2018-06-25 发布日期:2018-05-07
  • 通信作者: 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
  • 作者简介: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
  • 基金资助:
    国家自然科学基金资助项目( 21476091) ; 国家重点研发计划项目( 2017YFB0307901) ; 广东省科技计划项目 ( 2015A020215009) 

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) 

摘要: 以二次纤维企业生物处理二级出水为对象,通过田口试验设计和方差分析法 ( ANOVA) ,考察了聚合氯化铝( PAC) 投加量、阳离子聚丙烯酰胺( CPAM) 投加量、 pH 和 温度对膜前混凝过程的影响,确定混凝预处理的最佳工艺条件: PAC 投加量为 1000mg/L, CPAM 投加量为 20 mg/L, pH 为 9,温度为 25 ℃. 在此工艺条件下,废水化学需氧量 COD 值下降至441mg/L,总悬浮物 TSS 为4 NTU,污泥体积系数 SV 为 46,色度为 23 Units PtCo. 在此基础上进行废水的直接膜分离和经混凝预处理后的膜分离实验,研究结果表明, 与未经混凝预处理相比,二沉池出水经混凝预处理后,超滤处理 10 min,膜通量衰减至 70%,废水 COD 去除率达到60. 2%. 这说明混凝法作为膜分离的预处理工艺能提高二次 纤维废水膜处理的整体性能.

关键词: 预处理, 膜分离, 混凝, 二次纤维废水, 田口法 

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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