UBF-BAF处理羧甲基纤维素冷凝液特性  

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

作　　者：张文艺[1] 刘芳[1] 李文昱[1] 冯国勇[1] 刘玉翀 朱正伟[1] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]常州市国宇环保科技有限公司,江苏常州213167

出　　处：《过程工程学报》2014年第2期247-252,共6页The Chinese Journal of Process Engineering

基　　金：江苏省自然科学基金资助项目(编号:BE2012640);"十二五"国家水体污染控制与治理科技重大专项基金资助项目(编号:2012zx07301-001);江苏省常州市武进区科技支撑计划资助项目(编号:WS201302);江苏省2013年研究生科研创新工程资助项目(编号:CXZZ13_0737)

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.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 rag/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）.

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 

分 类 号：X703[环境科学与工程—环境工程]