| 混合液回流比对A/A/O工艺反硝化除磷的影响 |
| |
| 引用本文： | 徐伟锋,顾国维,张芳.混合液回流比对A/A/O工艺反硝化除磷的影响[J].化工学报,2007,58(10):2619-2623. |
| |
| 作者姓名： | 徐伟锋 顾国维 张芳 |
| |
| 作者单位： | 上海电力学院环境工程系 |
| |
| 基金项目： | 国家自然科学基金
,
上海市重点学科建设项目 |
| |
| 摘 要： | 以生活污水培养驯化污泥的小试规模A/A/O工艺为研究对象，进行了混合液回流比为100%、200%和300%时对反硝化除磷的影响研究，并利用厌氧/缺氧批式试验方法对污泥特性进行单独考察。结果表明，随着混合液回流比的增大，缺氧除磷在系统除磷所起的作用、反硝化聚磷菌缺氧利用单位聚羟基链烷酸（PHAs）的吸磷量和反硝化数量出现先升高后下降，厌氧合成单位PHAs的释磷量和好氧利用单位PHAs的吸磷量并没有受到影响，以200%时反硝化除磷和系统脱氮除磷效果为最好，过高或过低NO3-N浓度均会影响反硝化聚磷菌的缺氧吸磷速率和PHAs降解速率，但并没有影响其本身所固有的特性。
|
| 关 键 词： | 生物脱氮除磷 反硝化除磷 混合液回流比 生活污水 |
| 文章编号： | 0438-1157（2007）10-2619-05 |
| 收稿时间： | 2006-11-3 |
| 修稿时间： | 2006-11-03 |
Effect of internal return ratio on denitrifying phosphorus removal in A/A/O process |
| |
| XU Weifeng,GU Guowei,ZHANG Fang.Effect of internal return ratio on denitrifying phosphorus removal in A/A/O process[J].Journal of Chemical Industry and Engineering(China),2007,58(10):2619-2623. |
| |
| Authors: | XU Weifeng GU Guowei ZHANG Fang |
| |
| Affiliation: | 1 Department of Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China ; 2 State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China |
| |
| Abstract: | Based on a laboratory scale anaerobic anoxic oxic (A/A/O) process acclimated with municipal wastewater as carbon source, the effect of internal return ratio on denitrifying phosphorus removal in the system was investigated at internal return ratio of 100%, 200% and 300%, and anaerobic/anoxic batch experiments were performed to study sludge characteristicsThe results indicated that the contribution of anoxic P removal to total P removal became larger, denitrifying phosphorus accumulating organisms’ (DNPAOs) anoxic P uptake and denitrification capacity per polyhydroxyalkanoates (PHAs) utilized increased firstly, and then decreased, while anaerobic P release capacity per PHAs accumulated and aerobic P uptake capacity per PHAs utilized were rarely influenced by increasing internal return ratioWhen internal return ratio was set at 200%, denitrifying phosphorus removal and biological nutrient removal efficiency were the highestThe results in the batch experiments also showed that higher or lower nitrate concentrations at the beginning of anoxic stage could influence DNPAOs’ anoxic P uptake and PHAs utilization rates, but their intrinsic characteristics were almost never affected. |
| |
| Keywords: | biological nutrient removal denitrifying phosphorus removal internal return ratio municipal wastewater |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
