膜曝气生物膜技术(MABR)去除河水中污染物的研究

doi:10.19741/j.issn.1673-4831.2021.0318

摘要/Abstract

摘要： 为去除小流域河水中污染物,恢复水体生态功能,采用改性中空纤维膜曝气生物膜(MABR)进行了78 d的中试试验。水力停留时间(HRT)约为8~10 h时,曝气膜单位面积降解氨氮污染负荷为0.65~1.85 g·m^-2·d^-1,降解COD污染负荷为6~10 g·m^-2·d^-1,降解TP污染负荷为0.05~0.10 g·m^-2·d^-1。中试段上下游荧光指数(F_I)分别为1.82和2.12;自生源指数(B_IX)为0.946和1.104;新鲜度指数(β∶α)为0.897和0.99。试验结果表明,MABR技术对河水主要污染物具有较好的去除效果,有助于河流生态功能的修复,可用于低流速河流和黑臭水体的污染治理。

关键词: 膜曝气生物膜, 污染负荷, 反硝化, 胞外聚合物, 生态修复

Abstract: In order to remove pollutants from river water in a small watershed and restore the ecological function of the water body, a pilot scale test was carried out with modified hollow fiber membrane aerated biofilm for about 100 days. When hydraulic retention time (HRT) was about 8-10 h, the degradation load of ammonia nitrogen per unit membrane area of aeration membrane was 0.65-1.85 g·m^-2·d^-1, and the degradation load of COD per unit membrane area was about 6-10 g·m^-2·d^-1. The TP removal load was 0.05-0.10 g·m^-2·d^-1. The fluorescence index F_I of upstream and downstream in pilot section were 1.82 and 2.12, and B_IX were 0.946 and 1.104, respectively; The freshness index (β:α) were 0.897 and 0.99, respectively. The experimental results show that the membrane aerated biofilm technology had a good removal effect on the main pollutants of river water, which was helpful for the restoration of river ecological functions. It can be used for the pollution control of low-velocity rivers and black and odorous water bodies.

Key words: membrane aeration biofilm, pollution load, denitrification, extracellular polymer, ecological restoration

中图分类号:

X522

薛同站, 李卫华, 黄健, 朱曙光, 王坤. 膜曝气生物膜技术(MABR)去除河水中污染物的研究[J]. 生态与农村环境学报, 2022, 38(4): 531-537.

XUE Tong-zhan, LI Wei-hua, HUANG Jian, ZHU Shu-guang, WANG Kun. Study on the Removal of Pollutants From River Water by Membrane Aerated Biofilm Technology[J]. Journal of Ecology and Rural Environment, 2022, 38(4): 531-537.

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