摘要
在中试实验条件下,考察锰对石英砂滤料表面复合氧化膜去除氨氮的影响。实验结果表明:进水不含Fe^(2+)、Mn^(2+)的条件下,接触氧化对NH_4^+-N的最大去除能力约为2.0 mg/L;氨氮浓度低于2.0 mg/L时,锰离子对氨氮的去除没有明显影响;增大进水氨氮浓度为2.7 mg/L时,进水锰离子浓度为1.8 mg/L时最有利于活性滤膜对氨氮的去除,氨氮的去除率较进水不含锰离子时提高了14.3%,出水氨氮浓度低于饮用水标准限值0.5 mg/L。
Effect of manganese on ammonia removal by co-oxides membrane coated sands was studied in a pilot-scale experiment. The results showed that to ensure qualified effluent,the upper limit of ammonia concentration load was 2. 0 mg/L without iron or manganese in the water. The existence of manganese seemed to have no obvious influence on the removal of ammonia as the influent concentration of ammonia below 2. 0 mg/L. However,when increasing ammonia concentration up to 2. 7 mg/L,the manganese concentration of 1. 8 mg/L could most promote ammonia removal by active membrane. Compared to the influent without manganese,the removal rate of ammonia was increased by 14. 3% and the effluent ammonia concentration was lower than the drinking water standard limit of 0. 5 mg/L.
出处
《环境工程学报》
CAS
CSCD
北大核心
2015年第12期5737-5744,共8页
Chinese Journal of Environmental Engineering
基金
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项目(2014JZ015)
关键词
地下水
接触氧化
氨氮
锰
groundwater
contact oxidation
ammonia
manganese
