| A/O活性污泥法中污泥微膨胀试验研究(英文) |
| |
| 引用本文： | 万玉山,孙凌峰,贾春霞,李娜,雷春生.A/O活性污泥法中污泥微膨胀试验研究(英文)[J].农业科学与技术,2014(9):1620-1623. |
| |
| 作者姓名： | 万玉山 孙凌峰 贾春霞 李娜 雷春生 |
| |
| 作者单位： | 常州大学环境与安全工程学院,江苏常州213164 |
| |
| 基金项目： | 国家自然科学基金项目（51208068）. |
| |
| 摘 要： | 目的]利用污泥微膨胀的特性来净化水质、节约能源。方法]分别从低负荷(0.25 kgCOD/(kgMLSS·d))和中高负荷(0.55kgCOD/(kgMLSS·d))两个点出发,改变A/O系统好氧池中的溶解氧浓度,来考察溶解氧对污泥膨胀的影响。结果]在A/O活性污泥系统中,当污泥负荷为0.25 kgCOD/(kgMLSS·d)、DO=1.5 mg/L时,污泥指数在250左右,污泥负荷为0.55 kgCOD/(kgMLSS·d)、DO=1.5 mg/L时,污泥指数接近300,系统发生了微膨胀现象。污泥微膨胀时系统对COD、SS、氮、磷等的去除率依然较高。结论]在低溶解氧条件下可以提高氧转移速率,减少曝气量,具有节能的效果。
|
| 关 键 词： | A/O工艺 污泥微膨胀 污泥负荷 节能 |
Study on Limited Filamentous Sludge Bulking Test in A/O Activated Sludge Process |
| |
| Yushan WAN,Lingfeng SUN,Chunxia JIA,Na LI,Chunsheng LEI.Study on Limited Filamentous Sludge Bulking Test in A/O Activated Sludge Process[J].Agricultural Science ＆ Technology,2014(9):1620-1623. |
| |
| Authors: | Yushan WAN Lingfeng SUN Chunxia JIA Na LI Chunsheng LEI |
| |
| Institution: | (School of Environmental ＆ Safety Engineering of Changzhou University, Changzhou 213164, China) |
| |
| Abstract: | Objective] This study aimed to make use of the limited filamentous sludge bulking characteristics to purify water quality and save energy. Method] The effects of dissolved oxygen （DO） on sludge bulking were explored by changing the DO con- centration in the aerobiotic pool of NO system from the low load （0.25 kg COD/（kg MLSS.d）） and the medium to high load （0.55 kgCOD/（kg MLSSod））. Result] In the NO activated sludge system, when the sludge load was 0.25 kg COD/（kg MLSS.d）, DO=1.5 mg/L, the sludge index was at around 250, while when the sludge load- ing was 0.55 kg COD/（kg MLSS.d）, DO=1.5 mg/L, the sludge index was close to 300, occurring the limited filamentous bulking. The bulked sludge still showed high removal rates to COD, SS, nitrogen and phosphorus. Conclusion] It could improve the oxygen transfer rate and reduce the aeration rate at low DO conditions to achieve energy-saving. |
| |
| Keywords: | A/O process Limited filamentous sludge bulking Sludge load Energy saving |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
