单 位：
中国环境科学研究院水污染控制技术研究中心;兰州交通大学环境与市政工程学院
关键词：
厌氧折流板反应器;分散养猪;冲洗水;序批运行;溶解性有机物
摘 要：
以厌氧折流板反应器(ABR)处理分散及小规模养猪冲洗废水,对比了序批进水和连续进水时的运行性能,考察了序批进水ABR单个进水周期内污染物的去除特性,并以三维荧光光谱和离子色谱对特征有机物进行了解析。结果表明:序批和连续进水ABR的COD去除率均大于60%,但前者的去除率小于后者;COD负荷为1.40 kg·m-3·d-1时,序批ABR出水平均COD(600 mg·L-1)大于连续ABR(350 mg·L-1)。序批进水COD在ABR第一格去除率最大,且进水后其去除速度快,经12 h趋于稳定。类蛋白荧光峰的变化规律与COD一致,有机物水解酸化主要发生在进水后4 h内,甲酸、乙酸和丙酸等小分子物质也主要在此期间生成。
译 名：
Removal of Organics in Scattered Piggery Washing Wastewater by Anaerobic Baffled Reactor
作 者：
XIAO Yu;SHEN Zhi-qiang;ZHOU Yue-xi;WU Fu-ping;School of Environmental and Municipal Engineering, Lanzhou Jiaotong University;Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences;
关键词：
anaerobic baffled reactor;;scattered piggery;;washing wastewater;;batch operation;;dissolved organic matter
摘 要：
The present study explored treatment of washing wastewater from scattered and small-scale piggeries by anaerobic baffled reactor(ABR). The operating performances of two influent patterns--sequencing batch(SB)and continuous operation(CO)were compared. The removals of pollutants by SB-ABR in an operation cycle were investigated. The signature organics were detected by three-dimensional fluorescence spectrum and ion chromatography. The removal rates of COD by SB- and CO- ABR were greater than 60%, with CO-ABR higher than SB-ABR. The average COD in the effluent of SB-ABR was 600 mg·L-1 at COD loading rate of 1.40 kg·m-3·d-1, which was greater than that of CO-ABR(350 mg·L-1). The alkalinity of SB- and CO-ABR were more than 1000 mg·L-1. The COD was mainly removed in the first grid of SB-ABR. The organics were reduced quickly during the early period, and reached a steady status after 12 h. In the SB-ABR, there were two fluorescence peaks at λEx/λEm=275 nm/340 nm and λEx/λEm=220 nm/340 nm, which represents protein-like substances, with the peak intensity decreasing along the flow path. The variation trend of the protein-like fluorescence peaks was similar to that of COD. The organics were mainly hydrolyzed within the first 4 h, and small molecular organics, such as formic acid, acetic acid and propionic acid, were mainly produced during this period.
