| 低溶解氧下SBR内短程硝化影响因素试验研究 |
| |
| 引用本文： | 张小玲,王志盈.低溶解氧下SBR内短程硝化影响因素试验研究[J].环境科学与技术,2011,34(1):163-166. |
| |
| 作者姓名： | 张小玲 王志盈 |
| |
| 作者单位： | 1. 长安大学环境科学与工程学院,陕西西安,710064
2. 西安建筑科技大学环境与市政工程学院,陕西西安,710055 |
| |
| 基金项目： | 陕西省自然科学基金，长安大学中央高校基本科研业务费专项资金项目任务书项目，国土资源部干旱半干旱地区水资源与国土环境开放研究实验室资助项目 |
| |
| 摘 要： | 为了明确低溶解氧下短程硝化的其它控制因素,文章采用序批式反应器(SBR)系统研究了低溶解氧下实现短程硝化影响因素的控制范围。试验结果表明:SBR内较高的游离氨浓度(0.50～20.73 mg/L)对亚硝酸的积累起到一定促进作用;实现低溶解氧下短程硝化的温度和泥龄范围较大,在温度为21～30℃、泥龄为15～40 d的范围内都可以实现稳定的短程硝化,实验过程中亚硝酸积累率一直维持在80%以上;有机物的存在对氨氧化速率影响不大,但高有机物浓度(COD为900 mg/L)下,SBR内发生了高粘性膨胀。
|
| 关 键 词： | 低溶解氧 短程硝化 游离氨浓度 温度 泥龄 |
Experimental Study on Influencing Factors of Short-cut Nitrification at Low DO Concentration |
| |
| ZHANG Xiao-ling,WANG Zhi-ying.Experimental Study on Influencing Factors of Short-cut Nitrification at Low DO Concentration[J].Environmental Science and Technology,2011,34(1):163-166. |
| |
| Authors: | ZHANG Xiao-ling WANG Zhi-ying |
| |
| Institution: | ZHANG Xiao-ling1,WANG Zhi-ying2(1.School of Environmental Science and Engineering,Chang'an University,Xi'an 710064,China,2.School of Environmental and Municipal Engineering,Xi'an University of Architectural Science and Technology,Xi'an 710055,China) |
| |
| Abstract: | Realization of short-cut nitrification depended on various factors,and low DO concentration was as controlling factor to achieve short-cut nitrification.Sequencing batch reactor(SBR) was designed to investigate the effects of other factors on short-cut nitrification under low DO concentration.Experimental results showed that high free ammonia concentration in SBR played a catalytic role to nitrite accumulation.Stable short-cut nitrification could be achieved on the condition of temperature 21～30 ℃ and sludge age 15～40 d,nitrite accumulation rate could maintain over 80% during experiment.Organic matter had little impact on ammonia oxidation rate,but expansion of high viscosity of sludge occurred in SBR under the condition of 900 mg/L of COD. |
| |
| Keywords: | low DO short-cut nitrification free ammonia temperature sludge age |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
