三维电化学对养猪废水氨氮去除的影响研究  

Effect of Three-Dimensional Electrochemistry on Removal of Ammonia-Nitrogen in Swine Wastewater

作　　者：吴先威 王燕[1] 易俊 谢远莎 兰天翔 戴捷[1] WU Xianwei;WANG Yan;YI Jun;XIE Yuansha;LAN Tianxiang;DAI Jie(College of Chemistry and Environment Engineering, Yangtze University, Jingzhou 434023, China)

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《水处理技术》2019年第1期118-121,127,共5页Technology of Water Treatment

基　　金：国家自然科学基金(21173026);湖北省自然科学基金重点项目(2013CFA107)

摘　　要：以实际养猪废水为样本,比较了"厌氧折流板反应器(ABR)+生物接触氧化"(工艺1)与"三维电化学+ABR+生物接触氧化"(工艺2)在去除NH_4^+-N和COD的差异。结果表明,2种工艺出水均能满足GB 18596-2001中400 mg/L的COD限值,工艺2效果略好,但出水COD仍在112 mg/L以上。2种工艺出水三维荧光图谱的荧光峰A、C、D组分均残留一定强度,工艺2出水中峰B基本消失。工艺1的硝化率30%,工艺2的亚硝化率60%、硝化率20%。工艺2增加的电化学单元本身脱氮效果有限,但组合工艺去除NH_4^+-N效率大幅提升,原因是电化学单元调理了废水理化性质,部分克服了废水对亚硝化细菌的界面阻碍。Taking the actual swine wastewater as a sample, the differences were compared in the removal of ammonia nitrogen and COD between "ABR + biological contact oxidation" (Process 1) and "Three-dimensional electrochemical + ABR + biological contact oxidation" (Process 2). The results showed that, effluent in both processes could meet the limitation of COD of 400 mg/L in GB 18596-2001, but process 2 was slightly better with COD over 112 mg/L. The three-dimensional fluorescence spectrum showed that the peaks A, C and D of process 2 effluent both remained a certain intensity but the peak B of process 2 effluent basically disappeared. The nitrification efficiency was about 30% in process 1, and the nitrosation rate was about 60% and nitrification efficiency was about 20% in process 2. The ammonia nitrogen removal of electrochemical unit was limited, but NH4 +-N removal efficiency was greatly increased by combined process, which might due to the adjustments of electrochemical to the physicochemical properties of wastewater and partially overcame the interface barriers of wastewater to nitrite bacteria.

关 键 词：养猪废水 三维电化学 亚硝化 三维荧光光谱 

分 类 号：X713[环境科学与工程—环境工程]