| Sludge ozonation and its effect on performance of submerged membrane bio-reactor |
| |
| 作者姓名： | 蒋轶锋 王琳 王宝贞 何圣兵 刘硕 陈建孟 |
| |
| 作者单位： | School of Municipal and Environmental Engineering Harbin Institute of Technology，Ocean University of China，School of Municipal and Environmental Engineering，Harbin Institute of Technology，School of Environmental Science and Engineering，Shanghai Jiaotong University，School of Municipal and Environmental Engineering，Harbin Institute of Technology，College of Biological and Environmental Engineering，Zhejiang University of Technology，Harbin 150090，China College of Biological and Environmental Engineering，Zhejiang University of Technology，Hangzhou 310032，China，Qingdao 266003，China，Harbin 150090，China，Shanghai 200240，China，Harbin 150090，China，Hangzhou 310032，China |
| |
| 摘 要： | To investigate the effects of ozonation on minimizing the excess sludge and enhancing the nitrogen removal in an effluent,batch and continuous experiments in two MBRs with and without sludge ozonation (namely combined and reference run) were carried out. Through ozonation at a dose of 0.16 mg O3/mg MLVSS,53.1% of the treated MLVSS was solubilized,and soluble SCOD/TN ratio of ozonized sludge (OS) was about 8.6 due to the release of cellular nitrogen-contained materials and SCOD loss by ozone mineralization. In addition,the results of batch nitrification and denitrification tests with OS supernatant indicated that solubilized sludge could act as a reducing power for denitrification and a nitrogen source for nitrification. 40-day operation of two MBR systems demonstrated that the recirculation of OS into a bioreactor enabled the combined system have two advantages over the control one. The observed sludge yield (Yobs) was decreased from 0.13 to 0.06g MLSS/g COD,while the nitrogen removal was increased from 64.6% to 72.3%. And sludge ozonation elevated the inorganic fraction of MLSS,but did not impact sludge activities.
|
| 关 键 词： | 泥浆 膜生物反应器 剩余污泥 氮气 |
| 文章编号： | 1005-9113（2007）06-0807-05 |
| 收稿时间： | 2004-12-30 |
Sludge ozonation and its effect on performance of submerged membrane bio-reactor |
| |
| JIANG Yi-feng, WANG Lin, WANG Bao-zhen , HE Sheng-bing, LIU Shuo , CHEN Jian-meng.Sludge ozonation and its effect on performance of submerged membrane bio-reactor[J].Journal of Harbin Institute of Technology,2007,14(6):807-811. |
| |
| Authors: | JIANG Yi-feng WANG Lin WANG Bao-zhen HE Sheng-bing LIU Shuo CHEN Jian-meng |
| |
| Abstract: | To investigate the effects of ozonation on minimizing the excess sludge and enhancing the nitrogen removal in an effluent,batch and continuous experiments in two MBRs with and without sludge ozonation (namely combined and reference run) were carried out. Through ozonation at a dose of 0.16 mg O3/mg MLVSS,53.1% of the treated MLVSS was solubilized,and soluble SCOD/TN ratio of ozonized sludge (OS) was about 8.6 due to the release of cellular nitrogen-contained materials and SCOD loss by ozone mineralization. In addition,the results of batch nitrification and denitrification tests with OS supernatant indicated that solubilized sludge could act as a reducing power for denitrification and a nitrogen source for nitrification. 40-day operation of two MBR systems demonstrated that the recirculation of OS into a bioreactor enabled the combined system have two advantages over the control one. The observed sludge yield (Yobs) was decreased from 0.13 to 0.06g MLSS/g COD,while the nitrogen removal was increased from 64.6% to 72.3%. And sludge ozonation elevated the inorganic fraction of MLSS,but did not impact sludge activities. |
| |
| Keywords: | sludge ozonation membrane bioreactor (MBR) excess sludge nitrogen |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
