| Related citation: | Zhaoxu Peng,Zhongyuan Zhao,Tianyu Lou,Kun Jiang,Lei Li.Characteristics of Nutrients Removal under Viscous Sludge Bulking Treating Synthetic Wastewater[J].Journal of Harbin Institute Of Technology(New Series),2021,28(6):37-43.DOI:10.11916/j.issn.1005-9113.20001. |
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| Author Name | Affiliation | | Zhaoxu Peng | School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China | | Zhongyuan Zhao | State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China | | Tianyu Lou | School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China | | Kun Jiang | School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China | | Lei Li | School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China |
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| Abstract: |
| Viscous sludge bulking is a rare phenomenon in activated sludge process. The performances of nutrients removal were investigated with normal sludge and viscous bulking sludge. The results showed that when COD loading and C/N ratio were around 0.13 mg COD/(mg MLSS·d) and 7.67, the effect of viscous sludge bulking on the maximum specific oxidation rates of NH+4-N was very little, while the maximum specific oxidation rates of NO-2-N decreased from 24.69 mg/(g·h) to 1.20 mg/(g·h). Compared with normal sludge, viscous bulking sludge had bigger particle size and more extracellular polymeric substances (EPS). The mass transfer resistance in sludge flocs might be the main cause of the difference in NO-2-N oxidation rates. Therefore, this study demonstrates that viscous sludge bulking is beneficial to enhance simultaneous nitrification and denitrification (SND), and excessive EPS will exhibit storage function during phosphorus removal process. |
| Key words: activated sludge nitrogen removal viscous sludge bulking nitrification kinetics phosphorus uptake |
| DOI：10.11916/j.issn.1005-9113.20001 |
| Clc Number:X703.1 |
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| Descriptions in Chinese: |
| 粘性污泥膨胀下处理合成污水的营养物去除特性 彭赵旭1,2,, 赵中原2，娄天宇1, 姜昆1，李磊1 （1.郑州大学 水利科学与工程学院，郑州，450001； 2.哈尔滨工业大学城市水资源与水环境国家重点实验室，哈尔滨150090） 摘要：为探索粘性污泥膨胀对营养物去除的影响，考察了正常活性污泥与粘性膨胀污泥系统的脱氮除磷表现。结果表明，当COD负荷与C/N比分别在0.13 mgCOD.(mg MLSS.d) -1 和7.67时，粘性污泥膨胀对最大比NH4 +-N 氧化速率的影响很小，但是最大比NO2 --N氧化速率却从24.69 mg.(g.h) -1 骤降到 1.20 mg.(g.h) -1。和正常活性污泥相比，粘性膨胀污泥具有更大的粒径和更多的胞外聚合物（EPS），污泥絮体中的传质阻力可能是导致NO2 --N氧化速率差异的主要原因。另外，本研究证明了粘性污泥膨胀有助于实现同步硝化反硝化（SND），其产生的大量EPS可以在除磷过程中发挥贮存作用的功能。 关键词：活性污泥； 脱氮； 粘性污泥膨胀； 硝化动力学； 磷吸收 |
