Removal of COD from piggery wastewater using a lab-scale UASB reactor

文献类型： 外文期刊

第一作者： Yan, Fei

作者： Yan, Fei;Zuo, Jinlong;Yan, Fei;Qiu, Tianlei;Wang, Xuming

作者机构：

关键词： UASB;granular sludge;piggery wastewater;COD

期刊名称：ADVANCED RESEARCH ON MATERIAL SCIENCE AND ENVIRONMENTAL SCIENCE

ISSN： 1022-6680

年卷期： 2012 年 534 卷

页码：

收录情况： SCI

摘要： It took 55 days to start up a lab-scale upflow anaerobic sludge blanket (UASB) reactor at ambient temperature 27-28 degrees C by using the synthetic wastewater, and piggery wastewater was used as the influent after the reactor start-up. From day 120 onwards, COD removal efficiency maintained in the range of 85% to 95% with 6.79-9.66 kg COD/ (m(3)center dot d) of volume loading, and the effluent COD concentration ranged between 400 mg/L and 600 mg/L. Granular sludge formation was observed in the reactor after 40-day operation, and the sludge diameter reached 2-4 mm in the 120 day-old reactor. The pH changes in the influent had little influence on COD removal from piggery wastewater using the UASB reactor.

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