[1]张杰,文刚,李凯,等.双向流过滤系统催化氧化同步去除地下水中氨氮和锰[J].中国给水排水,2022,38(21):1-11.
　ZHANGJie,WENGang,LIKai,et al.Simultaneous Catalytic Oxidation Removal of Ammonia Nitrogen and Manganese from Groundwater in Bi-flow Filtration System[J].China Water & Wastewater,2022,38(21):1-11.
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双向流过滤系统催化氧化同步去除地下水中氨氮和锰

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第21期 页码: 1-11 栏目: 出版日期: 2022-11-01
Title:
Simultaneous Catalytic Oxidation Removal of Ammonia Nitrogen and Manganese from Groundwater in Bi-flow Filtration System
作者:
张杰1,2， 文刚1,2， 李凯1,2， 胡瑞柱1,2， 程亚1,2， 黄廷林1,2
（1.西安建筑科技大学环境与市政工程学院 西北水资源与环境生态教育部重点实验室，陕西 西安 710055；2.西安建筑科技大学环境与市政工程学院 陕西省环境工程重点实验室，陕西 西安 710055）
Author(s):
ZHANG　Jie1，2， WEN　Gang1，2， LI　Kai1，2， HU　Rui-zhu1，2， CHENG　Ya1，2， HUANG　Ting-lin1，2
（1. Key Laboratory of Northwest Water Resource， Environment and Ecology ， School of Municipal and Environmental Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Shaanxi Key Laboratory of Environmental Engineering， School of Municipal and Environmental Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China）
关键词:
双向流滤柱;  活性滤料;  催化氧化;  氨氮;  锰
Keywords:
bi-flow filter;  active filter material;  catalytic oxidation;  ammonia nitrogen;  manganese
摘要:
在中试条件下，将含有铁锰氧化膜的活性滤料应用于双向流催化氧化过滤系统，以缩短滤层厚度、增大水力负荷，充分利用原水中携带的溶解氧催化氧化同步去除地下水源中的氨氮和锰，并与单向流过滤进行对比。结果表明：采用双向流催化氧化过滤系统能同步将氨氮（<1.5 mg/L）和锰（<3.0 mg/L）持续处理达到《生活饮用水卫生标准》（GB 5749—2022）。与单向流过滤相比，当滤速为8.0 m/h时，双向流滤层水力负荷增加1倍且反冲洗周期缩短19%，单位时间内滤料对氨氮和锰的总去除量分别提高了56.6%和69.5%，体积氧化速率提升3倍。因此，采用双向流催化氧化过滤能充分利用原水中的溶解氧和活性滤料的全层氧化能力，在同等条件下大幅提高了系统处理水量和处理效率。用SEM、BET和EDS等对滤料进行微观表征，发现在运行过程中，比表面积增大了4倍，活性滤料表面会形成新鲜附着的锰氧化膜，且双向流上下层滤料并无明显区别。
Abstract:
In the pilot-scale conditions, ammonia and manganese were simultaneously removed from groundwater by bi-flow catalytic oxidation filter system with iron-manganese co-oxide films and was compared with uni-flow filter. The bi-flow filter could shorten the filter layer thickness and increase the hydraulic load, and the dissolved oxygen derived from the raw water was used to carry out catalytic oxidation reaction. The results showed that low concentration of ammonia nitrogen (<1.5 mg/L) and manganese (<3.0 mg/L) were simultaneously removed to meet the Standards for Drinking Water Quality (GB 5749-2022) by bi-flow catalytic oxidation filter system. Compared with uni-flow filtration, the hydraulic load of bi-flow filter was doubled and the backwash period was shortened by 19% when the filtration rate was 8.0 m/h, but the total removal of ammonia and manganese by filter material were increased by 56.6% and 69.5% in the same time, respectively. The volumetric oxidation rate was increased by 3 times. Therefore, the bi-flow catalytic oxidation filtration could make full use of the dissolved oxygen in raw water and full layer oxidation capacity of active filter material, and greatly improve the water treatment volume and efficiency under the same conditions. In addition, the SEM, BET and EDS characterizations results of the filter material showed that the specific surface area increased by 4 folds, and the new oxide film was formed and attached on the surface of the active filter material during the operation. There was no significant difference in active oxide films between the upper and lower filter material.
更新日期/Last Update: 2022-11-01