• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Wang, Xiaoxia (Wang, Xiaoxia.) | Zhao, Ji (Zhao, Ji.) | Yu, Deshuang (Yu, Deshuang.) | Chen, Guanghui (Chen, Guanghui.) | Du, Shiming (Du, Shiming.) | Zhen, Jianyuang (Zhen, Jianyuang.) | Yuan, Mengfei (Yuan, Mengfei.)

收录:

EI Scopus SCIE

摘要:

In this study, a novel process was developed by combining endogenous partial denitrification (EPD, NO3- -N -> NO2- -N) with denitrifying phosphorus removal (DPR) in an anaerobic/anoxic/aerobic sequencing batch reactor (SBR) to achieve a stable nitrite accumulation and phosphorus removal from high-strength nitrate (NO3- -N: 186.5 mg/L) and municipal wastewater (NH4+ -N: 52.6 mg/L, chemical oxygen demand (COD): 242.7 mg/L). After 138-day, high nitrate-to-nitrite transformation ratio (NTR) of 75.3% and PO43- -P removal efficiency of 92.3% were achieved by controlling the anaerobic drainage ratio and anoxic/aerobic durations. During the anaerobic stage (2.5 h), carbon source in raw municipal wastewater was efficiently utilized by phosphorus-andglycogen accumulating organisms (PAOs and GAOs) to enhance intracellular carbon storage (69.9% in anaerobic COD consumption), providing sufficient carbons for subsequent anoxic EPD and DPR. During the anoxic stage (2.5 h), high activity of DGAO(NO3-NO2) (denitrifying GAOs conducting NO3- -N -> NO2- -N) over DPAO(NO3) and DGAO(NO3) (DPAOs and DGAOs conducting NO3- -N -> N-2) in nitrate denitrification (77.7% > 8.2% and 5.7%) facilitated the nitrite accumulation and phosphorus uptake. In the last short aerobic stage (10 min), further phosphorus was removed by aerobic PAOs without initiating ammonia/nitrite oxidation. Thus, effluent NO2- -N/NH4+ -N ratio of 1.02: 1 (close to the theoretical value of 1.32: 1 for anammox process) with limited NO3- -N, PO43- -P and COD (1.8, 0.4 and 23.5 mg/L, respectively) were obtained. This provides the potential for advanced nutrient removal from nitrate and municipal wastewaters by combining EPDPR with anammox. Microbial community analysis revealed that Cluster I of Defluviicoccus-GAO group (similar to 7%) dominated the high nitrite accumulation performance, while Accumulibacter-PAO group (15 +/- 3%) was responsible for the P removal performance.

关键词:

Anammox Denitrifying glycogen accumulating organisms (DGAOs) Denitrifying phosphorus removal (DPR) Endogenous partial denitrification (EPD) Nitrite accumulation Phosphorous accumulating organisms (PAOs)

作者机构:

  • [ 1 ] [Wang, Xiaoxia]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China
  • [ 2 ] [Yu, Deshuang]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China
  • [ 3 ] [Chen, Guanghui]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China
  • [ 4 ] [Du, Shiming]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China
  • [ 5 ] [Zhen, Jianyuang]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China
  • [ 6 ] [Yuan, Mengfei]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China
  • [ 7 ] [Zhao, Ji]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

通讯作者信息:

  • [Wang, Xiaoxia]Qingdao Univ, Sch Environm Sci & Engn, Qingdao 266071, Peoples R China

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

年份: 2019

卷: 355

页码: 560-571

1 5 . 1 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:52

JCR分区:1

被引次数:

WoS核心集被引频次: 119

SCOPUS被引频次: 146

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 2

在线人数/总访问数:880/2910726
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司