化学催化法脱除模拟地下水中硝酸盐氮

doi:10.11949/j.issn.0438-1157.20141843

化工学报 ›› 2015, Vol. 66 ›› Issue (6): 2288-2294.DOI: 10.11949/j.issn.0438-1157.20141843

化学催化法脱除模拟地下水中硝酸盐氮

李德生, 胡倩怡, 崔玉玮, 邓时海

北京交通大学土木建筑工程学院, 北京 100044

收稿日期:2014-12-15 修回日期:2015-03-18 出版日期:2015-06-05 发布日期:2015-03-25
通讯作者: 崔玉玮
基金资助:
国家自然科学基金项目(51278034)。

Chemical catalytic performance on nitrate removal of simulated groundwater

LI Desheng, HU Qianyi, CUI Yuwei, DENG Shihai

School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2014-12-15 Revised:2015-03-18 Online:2015-06-05 Published:2015-03-25
Supported by:
supported by the National Natural Science Foundation of China (51278034).

摘要/Abstract

摘要：

利用化学催化对氮污染地下水进行修复, 研究了化学催化载体-自制活性催化固体颗粒载体在停留时间(HRT)、pH、进水水质不同的条件下脱氮效能及脱氮机理, 建立了脱氮反应动力学模型, 提出了化学催化载体脱除地下水中硝酸盐氮的反应为三级反应, 且水中氨氮初始浓度对硝酸盐氮的还原有抑制作用。试验结果表明:当HRT为2 h, 在酸性、中性和碱性条件下, 硝酸盐氮去除率均可达到90%左右;与一般铁碳微电解和零价铁脱氮相比, 反应更为迅速, 且不需调节pH。

关键词: 硝酸盐氮, 氨氮, 脱氮, 载体, 催化, 地下水, 化学反应

Abstract:

In this paper, the nitrogen removal efficiency and mechanism by the chemical catalytic particle carrier, i.e., the self-made active catalytic solid particle carrier and its influence factors such as HRT, initial pH and the quality of influent were studied and analyzed. The reaction kinetic model was established. The result showed that the nitrogen removal by self-made carrier is 3 order reaction and the initial concentration of ammonia in water had inhibitory effect on the reaction. Nitrogen removal rate reached 88.7% when HRT was 2 h, and was up to 90% no matter in acidic, neutral or alkaline conditions. Compared to normal zero-value iron or ferric carbon micro electrolysis, the chemical catalysis particle carrier was more efficient and had no particular requirement on influent pH.

Key words: nitrate, ammonia, nitrogen removal, carrier, catalytic, groundwater, chemical reaction

中图分类号:

X703

李德生, 胡倩怡, 崔玉玮, 邓时海. 化学催化法脱除模拟地下水中硝酸盐氮[J]. 化工学报, 2015, 66(6): 2288-2294.

LI Desheng, HU Qianyi, CUI Yuwei, DENG Shihai. Chemical catalytic performance on nitrate removal of simulated groundwater[J]. CIESC Journal, 2015, 66(6): 2288-2294.

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化学催化法脱除模拟地下水中硝酸盐氮

Chemical catalytic performance on nitrate removal of simulated groundwater

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