Development for Arsenic Removal using Iron Reducing Bacteria in Ground Water

利用地下水中的铁还原菌去除砷的开发

• 批准号: 18360253
• 负责人: SUGAHARA Masataka
• 金额: $ 10.48万
• 依托单位: Osaka Sangyo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360253/
• 关键词: Arsenic; Ground Water; Drinking Water; Iron Reducing Bacteria Method; Iron; Manganese; XAFS; XANES

Experiments for IRB method to remove iron, manganese, arsenic and ammonia started at the water purification plant in Muko city, Kyoto and earth work site for flood control in Kawanishi city, Hyogo in 2006. Arsenic concentrations of both site are 19.3 mg/L in Muko city and 218 mg/Lin Kawanishi city. The experiment in Muko city was implemented with different percolation velocities as 150m/day to 600 m/day, and the result was around 72 to 98% removals of iron, manganese and arsenic. The experiment in Kawanishi city was implemented with 500m/day percolation velocity, and the result was 75% removal of iron, 59% removal of arsenic, however manganese removal was not stable. According to XAFS analysis at the Spring-8, As(III) and As(III) which was oxidized as As(V) was sorbed near IRB at first, and sorbed As(III) was gradually oxidized to As(V). It means that this result disproves accepted notion (arsenic was sorbed after oxidation.).The experiment in Muko city was continued as first stage and second stage in 2007. Iron removals of both stage were more than 90% and stable. Arsenic removal was around 60% in second stage better than first stage. Manganese was not removed in both stages. Ammonia nitrification in second stage was better than first stage. It seems that differences of filter media and back-washing frequency. Small column tests implemented in second stage got a result removal of manganese and nitrification of ammonia after 50 days. XAFS analysis found living IRB aggregation was the highest sorption of As(V). And As(III) sorption and its velocity of living IRB aggregation was better than As(V) sorption and its velocity of freeze-dried IRB aggregation.

2006年，在京都向古市的净水厂和兵库县川西市的防洪土方工地开始了IRB法去除铁、锰、砷和氨的实验。这两个地点的砷浓度分别为19.3 mg/L（Muko市）和218 mg/L（Lin Kawanishi市）。在向港市进行了不同渗滤速度（150 ~ 600 m/d）的试验，结果铁、锰、砷的去除率在72 ~ 98%之间。在川西市进行了500 m/d渗滤速度的试验，结果铁的去除率为75%，砷的去除率为59%，但锰的去除率不稳定。根据Spring-8的XAFS分析，As（III）和被氧化为As（V）的As（III）首先在IRB附近吸附，吸附的As（III）逐渐被氧化为As（V）。这意味着该结果反驳了公认的观点（砷在氧化后被吸附）。2007年继续在向谷市进行第一阶段和第二阶段的试验。两段的铁去除率均在90%以上且稳定。第二段对砷的去除率在60%左右，优于第一段。锰在两个阶段中均未被去除。第二段氨硝化效果好于第一段。看来是滤料和反冲洗频率的差异。第二阶段进行的小型柱试验，经过50天的运行，取得了较好的除锰效果和氨氮硝化效果。XAFS分析发现，活IRB聚集体对As（V）的吸附最高。As（III）的吸附及其活性IRB聚集速度优于As（V）的吸附及其冻干IRB聚集速度。

项目成果

etc., New information of arsenic removal using IRB method(2) comparison of removal results of two sites.

等，IRB法除砷新信息（2）两场地去除结果比较。

• 发表时间: 2007
• 作者: A. Minami;D. Yoneda;Y. Fujikawa;M. Sugahara;T. Hamasaki
• 通讯作者: T. Hamasaki

Study on stabilization of water purification using IRE method

IRE法净化水的稳定性研究

• 发表时间: 2007
• 期刊: Journal for Environmental Engineering Committee, JSCE 44
• 作者: A. Minami;Y. Fujikawa;S. Tani;T. Hamasaki;M. Sugahara
• 通讯作者: M. Sugahara

X線吸収微罪構造による吸着剤の砒素除去機構の分析

利用X射线吸收微观结构分析吸附剂除砷机理

• 发表时间: 2006
• 期刊: 地下水・土壌汚染とその防止対策に関する研究集会要旨集 第12回
• 作者: H. Choi;Y. Nakano and N. Takahashi;八島浩 ほか
• 通讯作者: 八島浩 ほか

Study on As(IIf) removal velocity and mechanism of IRE method

IRE法去除As(IIf)速度及机理研究

• 发表时间: 2007
• 期刊: Journal for Environmental Engineering Committee, JSCE 44
• 作者: Y. Fujikawa;A. Minami;H. Yashima;M. Ihara;E. Yoshikawa;M. Sugahara;T. Hamasaki;M. Fukui;T. Honma
• 通讯作者: T. Honma

etc., Study on simultaneous removal of arsenic, iron and manganese in ground water using IRB method

等，IRB法同时去除地下水中砷、铁、锰的研究

• 发表时间: 2006
• 作者: A. Minami;D. Yoneda;Y. Fujikawa;M. Sugahara;T. Hamasaki
• 通讯作者: T. Hamasaki