| 引用本文: | 李冬,田海成,梁瑜海,范丹,张杰.容积交换率对SNAD污泥颗粒化与稳定运行的影响[J].哈尔滨工业大学学报,2017,49(8):1.DOI:10.11918/j.issn.0367-6234.201509117 |
| LI Dong,TIAN Haicheng,LIANG Yuhai,FAN Dan,ZHANG Jie.Influence of volumetric exchange rate on granulation and stable operation simultaneous partial nitrification, anaerobic ammonium oxidation and denitrification (SNAD) sludge[J].Journal of Harbin Institute of Technology,2017,49(8):1.DOI:10.11918/j.issn.0367-6234.201509117 |
|
| 摘要: |
| 为研究不同容积交换率对同步亚硝化-厌氧氨氧化与反硝化工艺(SNAD)污泥颗粒化及稳定运行的影响, 采用容积交换率分别为37.5%(R1) 和75%(R2) 的SBR进行对比实验.结果表明，R1仅用36 d就实现了颗粒化，比R2快1/3，且颗粒化过程中R1的污泥流失较小; R1总氮去除速率(RNR)、单位MLVSS好氧氨氧化活性(RAO)和厌氧氨氧化活性(RAN)分别为0.356 g·L-1·d-1，0.113 0和0.080 9 g·g-1·d-1; R2的RNR、RAO和RAN分别为0.248 g·L-1·d-1，0.093 6和0.070 5 g·g-1·d-1.由此表明：较小的容积交换率有利于减少絮体流失，从而加快SNAD污泥的颗粒化进程; 有利于提高AOB与AnAOB的活性以及抑制NOB活性，从而实现SNAD工艺稳定高效的去除效果.
|
| 关键词: 同步亚硝化-厌氧氨氧化与反硝化工艺 容积交换率 颗粒化 微生物活性 |
| DOI：10.11918/j.issn.0367-6234.201509117 |
| 分类号:X703.1 |
| 文献标识码:A |
| 基金项目:北京市青年拔尖团队项目(2014000026833TD02) |
|
| Influence of volumetric exchange rate on granulation and stable operation simultaneous partial nitrification, anaerobic ammonium oxidation and denitrification (SNAD) sludge |
|
LI Dong1,TIAN Haicheng1,LIANG Yuhai1,FAN Dan1,ZHANG Jie1,2
|
|
(1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering（Beijing University of Technology）,Beijing 100124,China;2.State Key Laboratory of Urban Water Resource and Environment（Harbin Institute of Technology）,Harbin 150090,China)
|
| Abstract: |
| In order to study the effect of different volumetric exchange rates (VER) on the granulation and stable operation of SNAD sludge, two lab-scale SBR reactors, with a 37.5% VER (R1) and 75% VER (R2), were comparably analyzed. Experimental results demonstrated that the granulation of R1 could be achieved in 36 days, was 12 days faster than R2. Meanwhile, a relatively lower sludge loss rate of R1 was obtained. The nitrogen removal rate (RNR), RAO and RAN in R1 were 0.356 g·L-1·d-1, 0.113 0 and 0.080 9 g·g-1·d-1, respectively; while that of R2 was 0.248 g·L-1·d-1, 0.093 6 and 0.070 5 g·g-1·d-1, respectively. This confirmed that a lower VER reduced the loss of floc sludge, and further declined the granulation period. Moreover, a lower VER not only enhanced the activity of ammonia-oxidizing and anaerobic ammonia-oxidizing bacteria, but also suppressed nitrite-oxidizing bacteria, was benefit for a stable and efficient removal performance of the SNAD granular sludge.
|
| Key words: SNAD granulation volumetric exchange rate microbial activity |
