Start-up strategy of single-stage partial nitrification-anammox process for anaerobic digestion effluent

被引：0
|
作者：
Park, Jihye [1 ]
Song, Minsu [2 ]
Hwang, Kwanghyun [3 ]
Bae, Hyokwan [2 ,4 ]
机构：
[1] Pusan Natl Univ, Dept Civil & Environm Engn, 63 Busandeahak Ro, Pusan 46241, South Korea
[2] Ulsan Natl Inst Sci & Technol UNIST, Dept Urban & Environm Engn, 50 UNIST Gil, Ulsan 44919, South Korea
[3] RIF Tech, Environm Solut Res Team, GRAN SEOUL, GS E&C, 33 Jong-ro, Seoul 03159, South Korea
[4] Ulsan Natl Inst Sci & Technol UNIST, Grad Sch Carbon Neutral, 50 UNIST Gil, Ulsan 44919, South Korea
来源：
BIORESOURCE TECHNOLOGY | 2024年 / 408卷
基金：
新加坡国家研究基金会;
关键词：
Nitrogen removal; Iron particle-integrated anammox granules; Single-stage system; Real wastewater; Internal recirculation; Aeration; Hydraulic retention time; WASTE-WATER TREATMENT; PARTIAL NITRITATION; NITROGEN REMOVAL; MICROBIAL COMMUNITY; ACTIVATED-SLUDGE; GRANULAR SLUDGE; BIOFILM; REACTOR; OXYGEN; PERFORMANCE;
D O I：
10.1016/j.biortech.2024.131213
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The objective of this study was to improve the nitrogen removal efficiency and reduce the start-up period of a single-stage partial nitritation-anammox (SPNA) system using iron particle-integrated anammox granules (IPIAGs). Anammox granules were enriched in sequencing batch and expanded granular sludge bed (EGSB) reactors. The EGSB reactor produced larger and more uniform granules with higher specific anammox activity. IP-IAGs were then inoculated into a two-stage partial nitritation-anammox reactor treating anaerobic digestion (AD) effluent, followed by an internal recirculation strategy to acclimate the granules to oxygen exposure for SPNA. Finally, the SPNA process operated to treat real AD effluent under optimal conditions of 0.05 L/min aeration intensity (0.01 vvm) and 24 h of hydraulic retention time, achieving TNRE of 86.01 +/- 2.64 % and nitrogen removal rate of 0.74 +/- 0.04 kg-N/m3 center dot d 3 center dot d for 101 d.
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收藏
页数：8
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