| 引用本文: | 刘淑丽,李建政,金羽.低温SBR系统活性污泥硝化效能的pH调控[J].哈尔滨工业大学学报,2014,46(6):39.DOI:10.11918/j.issn.0367-6234.2014.06.008 |
| LIU Shuli,LI Jianzheng,JIN Yu.Regulation of pH for enhancing nitrification efficiency of activated sludge in a low temperature sequencing batch reactor[J].Journal of Harbin Institute of Technology,2014,46(6):39.DOI:10.11918/j.issn.0367-6234.2014.06.008 |
|
| 摘要: |
| 为进一步提高低温(15 ℃)SBR系统的硝化效能,通过间歇培养实验探讨pH对系统活性污泥硝化效能的调控与影响．结果表明,将初始pH控制为8.0～9.0,低温SBR系统的活性污泥(以MLSS计)具有最佳的氨氮氧化能力,在NO2--N积累阶段对NH4+-N的比去除速率可达25.49 g·kg-1·d-1,NO2--N的比生成速率达22 g·kg-1·d-1;初始pH为7.5～8.0时,NO2--N氧化效果最佳,NO3--N的比生成速率可达35.6 g·kg-1·d-1;将反应系统的pH维持在8.0,可使亚硝酸菌和硝酸菌代谢活性均保持在较高水平,达到良好的硝化效果． |
| 关键词: 序批式活性污泥法 活性污泥 低温 硝化作用 pH |
| DOI：10.11918/j.issn.0367-6234.2014.06.008 |
| 分类号:X703 |
| 基金项目:国家技术重大专项课题(2013ZX07201007). |
|
| Regulation of pH for enhancing nitrification efficiency of activated sludge in a low temperature sequencing batch reactor |
|
LIU Shuli1,2, LI Jianzheng1,2, JIN Yu1,2
|
|
(1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 150090 Harbin, China; 2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China)
|
| Abstract: |
| To improve the nitrification efficiency of activated sludge in a low temperature (15 ℃） sequencing batch reactor (SBR), the performance and characteristics in nitrification of the activated sludge were investigated by batch culture with regulation of initial pH. The results indicated that the ammonia oxidation efficiency of the activated sludge was the best with initial pH ranged from 8.0 to 9.0. In the NO2--N accumulating process, the specific ammonia nitrogen (NH4+-N) removal rate and specific nitrite nitrogen (NO2--N) producing rate were 25.49 g·kg-1·d-1 and 22 g·kg-1·d-1(as MLSS), respectively. For nitrite oxidation, the favorable initial pH ranged from 7.5 to 8.0, under which a specific nitrate nitrogen (NO3--N) producing rate of 35.6 g·kg-1·d-1(as MLSS) was obtained. It showed that the satisfactory ammonia oxidation and nitrite oxidation efficiency would be obtained by the enhancement of metabolic activity both of the nitrite and nitrate bacteria when the pH of wastewater was kept at about 8.0 in the nitrification process. |
| Key words: sequencing batch reactor (SBR) activated sludge low temperature nitrification pH |
