Ammonia removal and microbial characteristics of partial nitrification in biofilm and activated sludge treating low strength sewage at low temperature

被引：34
作者：
Zhang, Xiaojing [1 ]
Liang, Yuhai [2 ]
Ma, Yongpeng [1 ]
Du, Jingjing [1 ]
Pang, Long [1 ]
Zhang, Hongzhong [1 ]
机构：
[1] Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 450001, Peoples R China
[2] Beijing Univ Technol, Lab Water Qual Sci & Water Environm Recovery Engn, Beijing 100124, Peoples R China
来源：
ECOLOGICAL ENGINEERING | 2016年 / 93卷
关键词：
Partial nitrification; Activated sludge; Biofilm; Microbial community; Low ammonia; Low temperature; AUTOTROPHIC NITROGEN REMOVAL; NITRITE-OXIDIZING BACTERIA; GRADIENT GEL-ELECTROPHORESIS; NITRIFYING BACTERIA; WASTE-WATER; NITROBACTER; BIOREACTOR; NITROSPIRA; DIVERSITY; ECOLOGY;
D O I：
10.1016/j.ecoleng.2016.05.016
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
In this study, the ammonia removal and stability of partial nitrification (PN) were investigated in an activated sludge system (R1) and a biofilm system (R2). The two systems were operated with identical setup and seeded with same sludge, to treat the sewage with ammonia of 60-65 mg L-1 at 14-16 degrees C. R1 performed a higher ammonia removal ability but a lower stability, while R2 showed a contrary result. In R1, both ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) showed higher bioactivity, AOB and Nitrospira presented lower biodiversity while Nitrobacter showed higher result than those of R2. FISH results indicated the lower proportion of AOB in R2, and relative low proportion of NOB in both the two systems. Activated sludge system should be operated as half PN or treat high ammonia sewage under low DO, while biofilm system could run as totally PN or treat low ammonia sewage with high DO. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：104 / 111
页数：8
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