铁碳微电解联合两相UASB处理丙烯酸废水  

Treatment of acrylic acid wastewater by Fe/C micro-electrolysis and two-phase UASB

作　　者：孙丽华[1,2,3] 骆坚平[1,2] 董娜[1,2] 王晓燕[3] 李安峰[1,2] 

机构地区：[1]北京市环境保护科学研究院,北京100037 [2]国家城市环境污染控制工程技术研究中心,北京100037 [3]首都师范大学资源环境与旅游学院,北京100048

出　　处：《环境工程学报》2015年第10期4817-4822,共6页Chinese Journal of Environmental Engineering

基　　金：北京市环境保护科学研究院科技基金资助项目(2013-A-06)

摘　　要：通过采用铁碳微电解预处理丙烯酸废水的实验研究,分析了物理吸附、进水p H、反应时间和固液比（填料废水比）这4个因素对COD和甲醛去除率的影响规律,同时研究了铁碳微电解结合两相UASB处理丙烯酸废水的技术优势。单因素实验的结果表明,当p H=3.0、反应时间=4 h、固液比=300 g∶200 m L时,铁碳微电解预处理可取得37%的COD去除率和30%的甲醛去除率,而且废水可生化性得到明显的改善,与单独两相UASB相比,预处理可显著提高两相UASB运行的稳定性和高效性,综合处理后出水COD达到《污水综合排放标准（GB 8978-1996）》二级排放标准;出水甲醛浓度降低至13~20 mg/L。Fe / C micro-electrolysis pretreatment was used for acrylic acid wastewater treatment in this study. The influences of four factors that were physical adsorption,p H,reaction time and solid-liquid（ Fe / C packingwastewater） ratio were analyzed. Meanwhile,The technical advantages of Fe / C micro-electrolysis pretreatment for two-phase UASB were also evaluated. The results of single-factor experiment showed that the removal efficiencies of COD and formaldehyde were 37% and 30%,respectively,under the experimental conditions of p H of 3. 0,reaction time of 4 h and solid-liquid ratio of 300 g ∶ 200 m L. In addition,the biodegradability of the wastewater increased obviously. In comparison with two-phase UASB alone,the stability and efficiency of two-phase UASB obtained dramatic improvement with pretreatment. The COD concentration of final effluent met second grade of the Integrated Wastewater Discharge Standard（ GB 8978-1996）,and formaldehyde concentration decreased to 13—20 mg / L.

关 键 词：铁碳微电解 丙烯酸废水 两相UASB 甲醛 

分 类 号：X703[环境科学与工程—环境工程]