催化氧化除氨氮/锰技术在滤池改造中的应用研究

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摘要西安市某地下水源水厂石英砂滤池中滤料表面形成的氧化膜催化活性很低，基本不具备去除铁、锰、氨氮的能力，出水安全隐患较高，因此在中试滤柱系统中评价了石英砂滤料除铁（Fe²⁺）、锰（Mn²⁺）、氨氮（NH₄⁺-N）效能，并进行活性滤料的性能优化.在此基础上，在水厂原有石英砂滤池中进行活性滤料的原位制备.结果表明，水厂石英砂滤料基本不具备去除Fe²⁺、Mn²⁺、NH₄⁺-N能力.在中试滤柱系统中，经过3d挂膜，低浓度Fe²⁺、Mn²⁺、NH₄⁺-N的去除率均可达93%以上.在滤池中进行原位改造后，进水NH₄⁺-N浓度为（0.3±0.05） mg/L时，去除率由28%提高到90%，进水Mn²⁺浓度为（0.3±0.05） mg/L时，去除率由50%提高到80%.进一步分析滤料表征发现，改造后滤料形貌和结构均发生了改变.XRD分析结果表明，改造后滤料产生了新峰，证明了滤料具备了活性.改造后可满足案例水厂净水安全的需要，具有较高的实用价值.

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	魏献诚
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	陈程澄

关键词 ：地下水, 氨氮, 锰, 活性氧化膜

Abstract：The catalytic activity for iron (Fe²⁺), manganese (Mn²⁺), and ammonium (NH₄⁺-N) removal of the oxide film naturally formed on the surface of the filter material in the quartz sand filter tank in a groundwater treatment plant in Xi'an is poor, thereby resulting in a high water supply risk. In this study, a pilot-scale filter system was utilized to evaluate the performance of iron, manganese, and ammonium removal via the naturally quartz filter media, and then the optimization of filter media was performed. On this basis, an active filter media was prepared in situ in the quartz sand filter tank. Results showed that naturally quartz filter media exhibited little effect on the Fe²⁺, Mn²⁺, and NH₄⁺-N removal. In the pilot-scale filter system, the removal rate of Fe²⁺, Mn²⁺ and NH₄⁺-N at low concentration can reach more than 93% after 3days' optimization. After the in-situ modification in the quartz sand filter tank, the ammonium and manganese removal efficiency increased from 28% to 90% and from 50% to 80%, respectively, when the influent NH₄⁺-N and Mn²⁺ concentration were (0.3±0.05) mg/L. The characterization analysis of the filter media showed that the morphology and structure of the modified filter media have changed. XRD analysis results showed that the modified filter media appeared a new peak, which proved that the active filter media was formed. The modified filter media could meet the requirements of the water supply security of the case water plant and has high practical value.

Key words： groundwater ammonium manganese active oxide film

收稿日期: 2020-07-24

PACS:

X703

基金资助:国家自然科学基金资助项目（51778521）；国家重点研发计划（2016YFC0400706）；陕西省教育厅专项科研计划项目（19JS039）

通讯作者: 黄廷林,教授,huangtinglin@xauat.edu E-mail: huangtinglin@xauat.edu

作者简介: 魏献诚(1995-),男,江苏扬州人,西安建筑科技大学硕士研究生,主要研究方向为水处理与水质污染控制.

引用本文:

魏献诚, 黄廷林, 程亚, 张涛, 苏捷超, 陈程澄. 催化氧化除氨氮/锰技术在滤池改造中的应用研究[J]. 中国环境科学, 2021, 41(3): 1132-1139. WEI Xian-cheng, HUANG Ting-lin, CHENG Ya, ZHANG Tao, SHU Jie-chao, CHEN Cheng-cheng. Investigation of application of catalytic oxidation to removal of ammonia/manganese technique in the transformation of production filter. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(3): 1132-1139.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2021/V41/I3/1132

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