PANKai-ling,WEIYu-xuan,QIUChen,et al.Effects of Organic Matter on Start-up of Sludge-Biofilm Hybrid Partial Nitritation Anammox in Moving Bed Biofilm Reactor[J].China Water & Wastewater,2024,40(9):69-76.
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Effects of Organic Matter on Start-up of Sludge-Biofilm Hybrid Partial Nitritation Anammox in Moving Bed Biofilm Reactor

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第9期 Page: 69-76 Column: Date of publication: 2024-05-01
Author(s):
PAN　Kai-ling1; 2;  WEI　Yu-xuan1;  QIU　Chen1;  ZHENG　Zhi-qiang1;  HAN　Jia-le1;  DU　Kai3;  LIU　Zhen4;  TANG　Ming-yue4;  BI　Xue-jun1; 2
（1. School of Environmental and Municipal Engineering， Qingdao University of Technology， Qingdao 266520， China； 2. National and Local Joint Engineering Center for Urban Sewage Treatment and Resource Recycling， Qingdao University of Technology， Qingdao 266520， China； 3. Qingdao Water Affairs Development Service Center， Qingdao 266071， China； 4. Qingdao Capital Ruihai Water Co. Ltd.， Qingdao 266011， China）
Keywords:
anaerobic ammonium oxidation;  organic carbon;  moving bed biofilm reactor;  partial nitritation;  microbial community structure
Abstract:
The effects of organic matter (R1: COD=500 mg/L, COD/N=1.25； R2: control, COD/N=0) on the start-up performance of one-stage sludge-biofilm hybrid partial nitritation anammox moving bed biofilm reactor (PNA-MBBR) were investigated by adding blank suspension carrier. The results showed that the nitrogen removal performance of R1 reactor was obviously better than that of R2 reactor. The nitrogen removal rate (NRR) of R1 was 0.23 kg/(m3·d), and the nitrogen removal contribution of anammox was up to 92.70%, while the NRR in R2 was just 0.06 kg/(m3·d). During the whole operation period, the average effluent NO2--N concentration of R1 was 87.42 mg/L, which was much lower than that of R2 (154.87 mg/L). The biofilm thickness of R1 [(351.76±67.93) μm] was also significantly thicker than that of R2 [(148.96±44.48) μm]. High-throughput sequencing showed that organic matter affected the microbial community structure of R1. The microbial diversity of R2 was higher than in R1, no matter in floc or biofilm samples. The relative abundance of Nitrosomonas in R1 was lower than that in R2. NOB was only detected in the samples of R1 and R2 in phase 1. Thauera had a higher relative abundance in R1 than in R2, but the diversity of denitrifying bacteria in R1 was lower than in R2. These results indicated that the influent with low COD/N ratio was beneficial for the rapid start?up and nitrogen removal of PNA-MBBR system.
Last Update: 2024-05-01