Ammonium adsorption in aerobic granular sludge, activated sludge and anammox granules

被引：106
作者：
Bassin, J. P. [1 ,2 ]
Pronk, M. [1 ]
Kraan, R. [3 ]
Kleerebezem, R. [1 ]
van Loosdrecht, M. C. M. [1 ]
机构：
[1] Delft Univ Technol, Dept Biotechnol, NL-2628 BC Delft, Netherlands
[2] Univ Fed Rio de Janeiro, Chem Engn Program, Rio De Janeiro, Brazil
[3] DHV Water Bv, NL-3818 EX Amersfoort, Netherlands
来源：
WATER RESEARCH | 2011年 / 45卷 / 16期
关键词：
Ammonium adsorption; Granular sludge; Activated sludge; Anammox; Isotherms; Kinetics; EXTRACELLULAR POLYMERIC SUBSTANCES; EXOPOLYSACCHARIDES; DENITRIFICATION; REMOVAL; EPS;
D O I：
10.1016/j.watres.2011.07.034
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The ammonium adsorption properties of aerobic granular sludge, activated sludge and anammox granules have been investigated. During operation of a pilot-scale aerobic granular sludge reactor, a positive relation between the influent ammonium concentration and the ammonium adsorbed was observed. Aerobic granular sludge exhibited much higher adsorption capacity compared to activated sludge and anammox granules. At an equilibrium ammonium concentration of 30 mg N/L, adsorption obtained with activated sludge and anammox granules was around 0.2 mg NH4-N/g VSS, while aerobic granular sludge from lab- and pilot-scale exhibited an adsorption of 1.7 and 0.9 mg NH4-N/g VSS, respectively. No difference in the ammonium adsorption was observed in lab-scale reactors operated at different temperatures (20 and 30 degrees C). In a lab-scale reactor fed with saline wastewater, we observed that the amount of ammonium adsorbed considerably decreased when the salt concentration increased. The results indicate that adsorption or better ion exchange of ammonium should be incorporated into models for nitrification/denitrification, certainly when aerobic granular sludge is used. (C) 2011 Elsevier Ltd. All rights reserved.
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收藏
页码：5257 / 5265
页数：9
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