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›› 2014, Vol. 14 ›› Issue (2): 247-252.

• 反应与分离 • 上一篇    下一篇

UBF-BAF处理羧甲基纤维素冷凝液特性

张文艺 刘芳1 李文昱 冯国勇 刘玉翀 朱正伟   

  1. 常州大学 环境与安全工程学院 常州大学 环境与安全工程学院 常州大学 环境与安全工程学院 常州大学 环境与安全工程学院 常州市国宇环保科技有限公司 常州大学 环境与安全工程学院
  • 收稿日期:2013-12-05 修回日期:2014-02-20 出版日期:2014-04-20 发布日期:2014-04-20
  • 通讯作者: 张文艺

Characteristics of Treating Carboxymethyl Cellulose Condensate with Upflow Blanket Filter and Biological Aeration Filter

ZHANG Wen-yi LIU Fang LI Wen-yu FENG Guo-yong LIU Yu-chong ZHU Zheng-wei   

  1. School of Environmental & Safety Engineering, Changzhou University School of Environmental and Safety Engineering, Changzhou University School of Environmental & Safety Engineering, Changzhou University School of Environmental & Safety Engineering, Changzhou University School of Environmental & Safety Engineering, Changzhou University School of Environmental and Safety Engineering, Changzhou University
  • Received:2013-12-05 Revised:2014-02-20 Online:2014-04-20 Published:2014-04-20
  • Contact: ZHANG Wen-yi

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摘要： 采用UBF-BAF组合工艺对多效蒸发食品添加剂羧甲基纤维素(CMC)产生的酸性冷凝液进行生物降解，考察了UBF-BAF组合工艺参数，构建了基于化学需氧量(COD)去除的UBF反应动力学模型，并对UBF和BAF反应器生物膜中的生物学特征进行了解析，初步揭示出UBF-BAF处理CMC冷凝液的特性. 其适宜的运行参数为：UBF的水力停留时间24 h，BAF的水力停留时间5 h，温度20~40℃，pH=6.5~7.5，BAF反冲洗周期5~7 d. 当进水COD浓度为2388~4000 mg/L时，UBF反应器对COD的去除率高于84.26%，BAF反应器对COD的去除率高于80.53%，最终出水达到《污水综合排放标准(GB 8978-2002)》一级排放要求.

关键词: 上向流厌氧滤池, 曝气生物滤池, 羧甲基纤维素, 冷凝液, 生物降解

Abstract: Aiming at the problem of acidic condensate treatment, which was generated by using multi-effect evaporation of food additive carboxymethyl cellulose (CMC) wastewater, the combined reactor of upflow blanket filter (UBF) with biological aeration filter (BAF) was adopted for biodegradation. Its technological parameters were investigated with hydraulic loading as control parameter. Based on COD removal, the UBF kinetic model was established. Biological phases in UBF and BAF reactors were also analyzed to reveal the characteristics of CMC condensate. The optimum parameters of UBF-BAF reactor were obtained: hydraulic retention time (HRT) of 24 h in UBF reactor, HRT of 5 h in BAF reactor, temperature 20~40℃, pH value 6.5~7.5, and BAF backwashing cycle 5~7 d. When the influent COD concentration was 2388~4000 mg/L, COD removal rates were up to 84.26% and 80.53% in UBF and BAF reactors, respectively. The effluent water could meet Grade I discharge demands of integrated wastewater discharge standard (GB 8978-2002).

Key words: upflow blanket filter, biological aeration filter, carboxymethyl cellulose, condensate, biodegradation

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