上流式厌氧污泥床去除饮用水中硝酸盐氮的研究  

Study on the denitrification of drinking water with upflow anaerobic sludge blanket reactor

作　　者：谭佑铭[1] 罗启芳[1] 

机构地区：[1]华中科技大学同济医学院环境医学研究所,武汉430030

出　　处：《卫生研究》2002年第1期19-21,共3页Journal of Hygiene Research

基　　金：国家自然科学基金 (No.39870 664)

摘　　要：在室温、COD∶N∶P =2 0 0∶5∶1、NO-3 N浓度从 5mg L逐渐增加至 10 0mg L、水力停留时间从 11 1h缩短至 4 7h的条件下 ,活性污泥在上流式厌氧污泥床中经过 7周时间即可完成反硝化细菌的驯化培养过程。此时反硝化细菌数量可较驯化前增加约 6 0倍 ,产甲烷速率提高约 10倍 ,脱氮率达 99%。还详细研究了C N(原子计 )及pH值对反硝化的影响 ,当C N≥ 1 0时 ,反硝化效率差别无显著性。水样经脱氮处理后无需调节pH值。The characteristics of denitrification was investigated with a pilot scale upflow anaerobic sludge blanket (UASB) reactor at room temperature. The results showed that when brewery waste degrading sludge was used as seed, the starting process was completed within 7 weeks, with hydraulic residence time shortened from 11 1 h to 4 7 h, COD/N/P=200/5/1 and influent NO - 3-N concentration increased from 5 mg/L to 100 mg/L. After the process starting, the most probable number [n(MPN)] of denitrifying bacteria was 60 folds and the maximum velocity of CH 4 produced was 10 folds higher than before. The removal efficiency of NO - 3-N was 99%. C/N ratio and pH value were investigated as effect factors When C/N≥1 0, the NO - 3-N removal efficiencies were not different from those of C/N<1 0 groups significantly. The pH value could meet the discharge standards.

关 键 词：上流式厌氧污泥床 反应器 饮用水 地下水 反硝化 生物处理 硝酸盐氮 

分 类 号：R123.6[医药卫生—环境卫生学]