Impact of different running conditions on performance of biofilters treating secondary effluent during start-up

文献类型： 外文期刊

第一作者： Zhang, Shiyang

作者： Zhang, Shiyang;Li, Meng;Zhu, Changbo;Xia, Shibin

作者机构：

关键词： Purification performance; Nitrifying biofilter; Secondary effluent; Intermittent aeration; Nitrification-denitrification

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN： 0960-8524

年卷期： 2019 年 281 卷

页码：

收录情况： SCI

摘要： In this study, the impact of different aeration sequences, hydraulic retention time (HRT), aeration time ratios and external carbon types on performance of biofilters treating secondary effluent during start-up was explored. For an intermittently aerated nitrifying filter, the adjustment of aeration sequence with prior nitrification or denitrification had no significant impact on overall performance. Extending HRT promoted sedimentation and denitrification. However, extending HRT to enhance performance is inadvisable due to incompleted denitrification. Similarly, the impact of different aeration time ratios on performance was not as apparent as that of start-up time. External carbon addition to denitrifying filter could enhance performance with glucose more favorable for denitrification and sodium acetate better for P sequestration. When the synthetic over-standard secondary effluent treated by the nitrifying and denitrifying filters in order with the latter added with glucose, all the monitored indices could reach the A standard (GB 18918-2002, China).

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序