| 不同pH下好氧颗粒污泥的稳定性 |
| |
| 引用本文： | 张立楠,宣鑫鹏,程媛媛,王健齐,黄思浓,龙焙.不同pH下好氧颗粒污泥的稳定性[J].有色金属科学与工程,2019,10(1):87-91. |
| |
| 作者姓名： | 张立楠 宣鑫鹏 程媛媛 王健齐 黄思浓 龙焙 |
| |
| 作者单位： | 江西理工大学建筑与测绘工程学院,江西 赣州,341000;江西理工大学建筑与测绘工程学院,江西 赣州,341000;江西理工大学建筑与测绘工程学院,江西 赣州,341000;江西理工大学建筑与测绘工程学院,江西 赣州,341000;江西理工大学建筑与测绘工程学院,江西 赣州,341000;江西理工大学建筑与测绘工程学院,江西 赣州,341000 |
| |
| 基金项目： | 江西省教育厅科技项目GJJ150627江西省青年科学基金项目20181BAB2160262018年国家级大学生创新创业训练计划项目201810407005 |
| |
| 摘 要： | 为考察好氧颗粒污泥（AGS）对不同pH环境下的耐受力，研究了不同pH废水（pH分别为3、4、5、10、11、12）下AGS的稳定性变化规律.在酸性环境中，AGS的理化特性随pH下降而变差（胞外聚合物（EPS）含量由102.5 mg/g下降到76.43 mg/g MLSS，比耗氧速率（SOUR）由17.94 mg O2/（g MLSS·h））下降到16.19 mg O2/（g MLSS·h）），pH为3和4时均出现不同程度的污泥上浮，对污染物的去除效果也呈下降趋势，但COD和TP的去除率维持在80 %以上.在碱性环境中，AGS出现了明显的上浮及解体.随着pH的增大，AGS的理化特性不断恶化（EPS由93.27 mg/g MLSS上升到178.45 mg/g MLSS，SOUR由6.81 mg O2/（g MLSS·h））下降到4.30 mg O2/（g MLSS·h））.同时，AGS对污染物的去除能力急剧下降，对COD、TN、TP的去除率均下降到50 %以下.研究结果表明AGS在酸性环境中有较强的耐冲击负荷能力，而碱性环境对AGS有较大的抑制作用.
|
| 关 键 词： | 好氧颗粒污泥 pH 活性 胞外聚合物 稳定性 |
| 收稿时间： | 2018-11-14 |
Effect of pH on stability of aerobic granular sludge |
| |
| Affiliation: | School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China |
| |
| Abstract: | In order to investigate the tolerance of aerobic granular sludge(AGS) to different pH environments, the stability of AGS under different pH wastewaters (3, 4, 5, 10, 11, 12) was studied. In the acidic environment, the physical and chemical properties of AGS deteriorated(EPS decreased from 102.5 to 76.43 mg/g, SOUR decreased from 17.94 to 16.19 mg O2/(g MLSS·h))as the pH decreased. When the pH was 3 or 4, sludge floating was observed in different degrees, and the removal efficiency also showed a downward trend. In addition to the unsatisfactory removal of ammonia nitrogen, the removal rate of other pollutants remained above 80 %. In the alkaline environment, sludge swelling also occured. As the increase of pH, the physical and chemical properties decreased (EPS rose from 93.27 to 178.45 mg/g, SOUR decreased from 6.81 to 4.30 mg O2/(g MLSS·h)). At the same time, the removal ability of AGS for pollutants decreased sharply, and the removal rates of COD, TN and TP all dropped below 50 %.The results showed that AGS was capable to maintain stable in acidic environment, while alkaline environment had a greater inhibitory effect on AGS. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《有色金属科学与工程》浏览原始摘要信息 |
|
点击此处可从《有色金属科学与工程》下载全文 |
|
