生物滤池同步净化低温高铁锰氨氮地下水

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摘要为实现低温（5~6℃）高铁锰氨氮[TFe：9~15mg/L，Fe²⁺：6~12mg/L，Mn²⁺：0.8~1.2mg/L，NH₃-N：0.9~1.4mg/L]地下水的生物同步净化，以水厂实地滤柱进行实验.结果表明，在该种水质下，以1.0，3.0m/h滤速启动生物滤柱，分别历经128，91d启动成功.铁和氨氮自启动之初出水即合格，锰的去除仍然是滤池成熟的决定性因素.溶解氧（DO）充足条件下，净化所需滤层厚度随氨氮浓度的升高而加厚，氨氮极限去除浓度为1.60mg/L.进水DO不足是限制氨氮继续提升的主要因素.滤速越大，锰的去除量越少，净化所需滤层越厚，滤柱极限运行滤速为8.0m/h.沿程分析发现，铁和锰的氧化去除存在显著分级，铁和氨氮在滤层内可同步氧化去除，锰的高效氧化去除区间相对滞后.

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	王刘煜
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关键词 ：低温, 高铁锰氨氮, 地下水, 同步净化, 溶解氧, 滤层厚度

Abstract：A pilot-scale bio-filter was constructed for the removal of high concentrations of iron (TFe:9~15mg/L, Fe²⁺:6~12mg/L), manganese (Mn²⁺:0.8~1.2mg/L), and ammonia nitrogen (NH₃-N:0.9~1.4mg/L) simultaneously from low temperature (5~6℃) groundwater. Pilot-scale bio-filter were started separately by using the 1.0m/h and 3.0m/h were started successfully after 128d and 91d, respectively. Iron and ammonia nitrogen were removed at the beginning of the bio-filter start-up, Mn removal remains a decisive factor in filter maturity. The required thickness of the bio-filter required for purification increased as the concentration of ammonia nitrogen increased when dissolved oxygen (DO) was sufficient. The maximum removal of ammonia nitrogen was about 1.60mg/L. DO deficiency was the main factor limiting the further increase of ammonia nitrogen. For higher filtration rates, the removal of manganese was less, and the thicker the filter layer required for purification. The maximum filtration rate of the single bio-filter was 8.0m/h. Analysis along the way, there were significant removal classification between Fe and Mn during the oxidation-removal process, iron and ammonia nitrogen in the filter layer can be oxidized and removed simultaneously, manganese is oxidized and removed after the iron and ammonia nitrogen.

Key words： low temperature high iron manganese and ammonia nitrogen groundwater simultaneous purification dissolved oxygen thickness of filter layer

收稿日期: 2019-01-17

PACS:

X523

基金资助:国家自然科学基金资助项目（51678006）

通讯作者: 李冬,教授,lidong2006@bjut.edu.cn E-mail: lidong2006@bjut.edu.cn

作者简介: 王刘煜(1995-),男,河南周口人,北京工业大学硕士研究生,主要研究方向为水环境恢复理论及关键技术.发表论文1篇.

引用本文:

王刘煜, 李冬, 曾辉平, 张杰. 生物滤池同步净化低温高铁锰氨氮地下水[J]. 中国环境科学, 2019, 39(8): 3300-3307. WANG Liu-yu, LI Dong, ZENG Hui-ping, ZHANG Jie. Simultaneous purification of high-iron,manganese and ammonia nitrogen from low temperature groundwater in biological filter. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(8): 3300-3307.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2019/V39/I8/3300

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