《环境工程学报》第三届编委会2019年度工作会议顺利召开    《环境工程学报》获“2017年度科学传播特殊贡献单位”荣誉称号    《环境工程学报》启用DOI通知设为首页|加入收藏
引用本文
  • 夏新星,王志强,谢先军,苏春利,王斌.载铁活性炭烧结滤芯的制备及其除砷性能[J].环境工程学报,2019,13(7):1534-1540.DOI:10.12030/j.cjee.201809199    [点击复制]
  • XIA Xinxing,WANG Zhiqiang,XIE Xianjun,SU Chunli,WANG Bin.Preparation of sintered iron-loaded activated carbon filter core and its arsenic removal performance[J].,2019,13(7):1534-1540.DOI:10.12030/j.cjee.201809199   [点击复制]
【打印本页】 【在线阅读全文】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 49次   下载 40 本文二维码信息
码上扫一扫!
载铁活性炭烧结滤芯的制备及其除砷性能
夏新星1,2,王志强2,谢先军2,苏春利2,王斌2
0
(1.中国地质大学(武汉),生物地质与环境地质国家重点实验室,武汉 430074;2.中国地质大学(武汉)环境学院,武汉 430074)
摘要:
为实现高砷地下水分布区居民饮用水高效除砷,通过氧化法对椰壳活性炭进行载铁改性处理,采用成型活性炭烧结加工工艺,制备高效除砷滤芯。结果表明:所制得的长度为25.4 cm的除砷滤芯可将初始浓度为500 μg·L-1的高砷水,以1 L·min-1的流量过滤处理为砷含量在10 μg·L-1以下的安全饮用水,使用寿命达260 L,相对于普通活性炭烧结滤芯,使用寿命提高了4倍;通过SEM和EDS分析,改性处理后的活性炭表面负载了铁的氧化物,导致其对砷的吸附能力提高了50%;同时滤芯加工过程中的高压处理使得载铁活性炭颗粒之间呈片状紧密堆叠在一起,含砷溶液透过致密活性炭层中的5~20 μm孔隙时,溶液中的砷与活性炭及铁的氧化物接触而被吸附去除。该滤芯可应用于高砷地下水分布区居民家庭分散式净水除砷。
关键词:  高砷地下水  载铁改性  烧结滤芯  活性炭
DOI:10.12030/j.cjee.201809199
投稿时间:2018-09-30
基金项目:国家自然科学基金资助项目41630318;中国地质调查局资助项目12120114069301;湖北省自然科学基金资助项目2015CFB554国家自然科学基金资助项目(41630318);中国地质调查局资助项目(12120114069301);湖北省自然科学基金资助项目(2015CFB554)
Preparation of sintered iron-loaded activated carbon filter core and its arsenic removal performance
XIA Xinxing1,2,WANG Zhiqiang2,XIE Xianjun2,SU Chunli2,WANG Bin2
(1.State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences(Wuhan), Wuhan 430074, China;2.School of Environmental Studies, China University of Geosciences(Wuhan), Wuhan 430074, China)
Abstract:
In order to remove arsenic efficiently from drinking water of residents living in distribution areas with high arsenic groundwater, an oxidation method was used to modify coconut shell activated carbon with iron coating. Then a filter core with high effective arsenic removal was prepared by using formed activated carbon sintering process. The results showed that the arsenic removal filter core with 25.4 cm length could treat 260 L high arsenic raw water with 500 μg·L-1 initial concentration at 1 L·min-1 flow rate, the arsenic content of filtrated water was below 10 μg·L-1 and met the drinking water standard. In comparison with the sintered filter core with common activated carbon, the service life of the new one increased by 4 times. SEM and EDS analysis indicated that the modified activated carbon surface was loaded with iron oxides, resulting in 50% increase in its arsenic adsorption capacity. The high-pressure treatment during the filter core processing led to the close stack in a sheet form for the iron-loaded activated carbon. When arsenic-contained solution passed through the pores with size of 5~20 μm in the compact activated carbon layer, arsenic could meet the activated carbon and loaded iron oxides, and was adsorbed and removed from water accordingly. The filter core can be used to remove arsenic from decentralized drinking water of residents living in distribution areas with high arsenic groundwater.
Key words:  high arsenic groundwater  iron-loaded modification  sintered filter core  activated carbon