摘要
为探究催化氧化同步去除铁锰氨氮滤池快速启动的影响条件,在不同进水条件下,对挂膜启动阶段滤池去除铁锰氨氮的效果进行了研究.结果表明,化学氧化法挂膜能有效缩短接触氧化滤池的启动时间,28d左右实现同步除铁锰氨氮工艺的快速启动和稳定运行;在挂膜启动阶段,适当增加铁浓度有助于缩短滤料成熟周期,进水氨氮浓度的改变对滤料成熟周期基本无影响;在进水氨氮、锰和铁浓度分别为1.5,2,1mg/L,滤速为4m/h的试验条件下,滤柱可较快的具备除高铁、高锰和高氨氮的能力.本实验条件下滤柱同步除氨氮和锰的浓度上限分别为2.1,2.7mg/L,满足了多数污染地下水的处理需求.
To explore the factors affecting the rapid start-up of chemical catalytic oxidation filter, three identical pilot-scale filters were employed to optimize the start-up process for simultaneous removal of iron(Fe), manganese(Mn), and ammonia from groundwater at various influent conditions. The results showed that chemical oxidation method could accelerate the start-up of filter. After 28days' operation, the simultaneous removal of iron, manganese, and ammonia could be achieved. A good dose iron was beneficial to shorten the start-up period of the filter. Various influent ammonia concentrations seemed to have no effect on the start-up of the filter. When the influent ammonia, Fe, Mn concentration was 1.5mg/L, 2.0mg/L and 1mg/L, respectively and the flow rate was 4m/h, it had demonstrated to be a feasible and quick start-up method. The maximum influent concentration of ammonia and manganese could reach up to 2.1mg/L and 2.7mg/L, respectively, which could meet the requirement for treating the polluted groundwater.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2017年第3期1003-1008,共6页
China Environmental Science
基金
国家重点研发计划课题(2016YFC0400706)
国家自然科学基金资助项目(51278409
51308438)
陕西省自然科学基础研究计划(2014JZ015)
中建股份科技研发课题(CSCEC-2014-Z-32)
关键词
接触氧化
快速启动
地下水
同步除铁锰氨氮
滤柱
catalytic oxidation
rapid start-up
groundwater
ammonia
iron and manganese removal
filter