微生物膜反应器修复地浸采铀退役采区地下水
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v7i8.2201
Abstract
酸性强、硝酸盐以及铀离子浓度超标一直是酸法地浸采铀退役采区地下水存在的问题,因此需要对其进行合理解决。基于此,本文以西北某地浸采铀退役采区地下水为研究对象,先采用氧化钙中和法去除铀,然后添加不同碳源,再构建琼氏不动杆菌厌氧微生物膜反应器,探究碳源与进水流速去除NO3-的影响。试验结果表明：中和每升地下水需0.167g,pH由3.0调至7.0左右,铀从0.4mg/L降至0.05mg/L(达到排放标准)；中和处理后的地下水再经微生物膜反应器处理,乙醇为碳源,进水速度为1.0mL/min时,对NO3-去除率达到最高,为99.48%。
Keywords
地浸采铀；地下水；微生物膜反应器；琼氏不动杆菌；NO3-
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