WANGKang-zhou,LüKai,SHAOXian-ming,et al.Advanced Nitrogen Removal through Partial Denitrification Coupled with Anammox Process in MBBR[J].China Water & Wastewater,2022,38(17):15-20.
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Advanced Nitrogen Removal through Partial Denitrification Coupled with Anammox Process in MBBR

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第17期 Page: 15-20 Column: Date of publication: 2022-09-01
Author(s):
WANG　Kang-zhou1; 2;  Lü　Kai1; 2;  SHAO　Xian-ming1; 2;  LI　Jia-hui1; 2;  YAO　Xue-wei1; 2;  PENG　Dang-cong1; 2
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Northwest China Key Laboratory of Water Resources and Environment Ecology， Xi’an University of Architecture and Technology， Xi’an 710055， China）
Keywords:
Anammox;  partial denitrification;  MBBR;  secondary effluent
Abstract:
The MBBR reactor was operated at normal temperature and low substrate concentration, and the possibility of partial denitrification coupled with Anammox (PD/A) for treatment of secondary effluent from municipal wastewater treatment plant (WWTP) was investigated. The results showed that after 180 days of cultivation at TN=25 mg/L and COD=50 mg/L, the effluent TN concentration was (3.87±0.69) mg/L, total nitrogen removal rate was (83.86±5.43)%, and the contribution to nitrogen removal by Anammox process was (95±4)%. Anammox and partial denitrification activities were stabilized at (728.84±7.90) mg/(m2·d) and (1 128.24±12.24) mg/(m2·d), respectively, which indicated partial denitrification bacteria and Anammox bacteria formed a good synergy effect. The high-throughput sequencing results showed that the proportion of Candidatus Brocadia increased from 0.62% to 5.61%, and the proportion of Thauera increased from 0.004% to 3.74%. Under the conditions of normal temperature and low substrate concentration, the stable operation of PD/A in MBBR provides a reference for improving the quality and efficiency of WWTPs.
Last Update: 2022-09-01