人工强化负载锰氧化物滤料去除地下水中氨/锰中试  

Ammonia/Manganese Removal from Groundwater by Artificially Enhanced Manganese Oxide Filter Media

作　　者：窦韩 黄廷林[1,2,3] 程亚 DOU Han;HUANG Ting‑lin;CHENG Ya(School of Environmental and Municipal Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Shaanxi Key Laboratory of Environmental Engineering,Xi’an 710055,China;Northwest China Key Laboratory of Water Resource and Environment Ecology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]陕西省环境工程重点实验室,陕西西安710055 [3]西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《中国给水排水》2024年第3期15-22,共8页China Water & Wastewater

基　　金：陕西省教育厅2022年度重点科研计划项目(22JY035);国家自然科学基金资助项目(52000145)。

摘　　要：以人工强化负载锰氧化物滤料为研究对象,考察了在两种不同硬度、碱度地下水环境下活性滤料除氨/锰活性形成,以及滤料表面膜负载量与负载强度随时间的变化规律。结果表明,在低硬度、碱度水质环境下运行的1#滤柱除氨/锰活性形成速度显著高于高硬度、碱度环境下的2#滤柱,1#滤柱在第9天时出水氨浓度低于0.5 mg/L,2#滤柱在第21天时氨浓度低于0.5 mg/L。此外,人工强化负载滤料负载强度与表面膜负载量分别为0.07、0.92 g/10 g,均高于传统挂膜(0.02和0.072 g/10 g)。通过SEM与XRD发现,滤料形貌及结构在运行过程中发生了改变,成熟的滤料表面存在大量网状结构,并生成了水钠锰矿型锰氧化物。可见,人工强化负载锰氧化物滤料在低碱度、硬度地下水条件下更易形成除氨/锰活性,能够有效去除进水中2 mg/L的氨/锰,具有一定的工程应用价值。In this study,an artificially enhanced manganese oxide filter media was prepared,and the formation of ammonia/manganese removal activity of active filter material in two different hardness and alkalinity groundwater environments was investigated.Meanwhile,the variation patterns of surface film loading and loading intensity of filter material over time were examined.The results showed that the ammonia/manganese removal activity formation rate of column 1#under low hardness and alkalinity water quality environment was significantly higher than that of column 2#under high hardness and alkalinity environment,in addition,the effluent ammonia concentration of column 1#was lower than 0.5 mg/L at 9 d,and that of column 2#was at 21 d.Furthermore,the artificially enhanced filter media loading strength and surface film loading were 0.07 g/10 g and 0.92 g/10 g,respectively,which were both higher than those ofthe conventional film(0.02 g/10 g and 0.072 g/10 g).SEM and XRD analysis showed that the morphology and structure of the filter material changed during operation,with a large number of net‑like structures appearing on the surface of mature filter material and the formation of sodium-manganese mineral‑type manganese oxide.This study demonstrates that artificially enhanced manganese oxide filter media is more likely to form ammonia/manganese removal activity under low alkalinity and hardness groundwater conditions,can effectively remove ammonia/manganese with an influent concentration of 2 mg/L,and has potential engineering applications.

关 键 词：催化氧化 除氨/锰 地下水 

分 类 号：TU991[建筑科学—市政工程]