The influence of aeration rate on partial nitrification in sequencing batch reactor

被引：3
|
作者：
Wu, Weiwei [1 ]
Cong, Li [2 ]
Wang, Jianlong [1 ]
机构：
[1] Tsinghua Univ, INET, Lab Environm Technol, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Dept Water Pollut Control Technol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION | 2009年 / 38卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
partial nitrification; aeration; SBR; sequencing batch reactor; DO; nitrite; NITRITE ACCUMULATION; WASTE-WATER; AMMONIA;
D O I：
10.1504/IJEP.2009.026661
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Partial nitrification was investigated in Sequencing Batch Reactor (SBR) under aeration of 100, 500, 1000 and 1600 nit min(-1). The biomass concentration was about 1.7 g l(-1). When the ratio of alkalinity (mg l(-1)) to NH4+-N (mg l(-1)) was 7.14: 1, pH and DO would both increase dramatically after ammonia oxidation finished. Through monitoring and controlling the variation of pH and DO in the reactor, a stable partial nitrification process could be maintained. During NH4+-N oxidation the fluctuation range of DO was 0.09-3.70 mg l(-1). The NH4+-N removal efficiency and NO2--N accumulation rate were higher than 97.9% and 99.1%, respectively.
引用
收藏
页码：193 / 202
页数：10
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