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Affiliation of Author(s):

环境与市政工程学院

Journal:

Journal of Chemical Technology and Biotechnology

Key Words:

中文关键字：好氧颗粒; 热重，英文关键字：aerobic granule; aerobic granular sludge; differen

Abstract:

BACKGROUND: Aerobic granular sludge is a self-immobilization biotechnology for wastewater treatment. The thermogravimetric characteristics of aerobic granules were investigated in this study. RESULTS: The strongly physically bound water in granules that developed under the salinity of 1% (in reactor R1) and 5% (in reactor R2) were 5% and 3%, respectively. In addition, the extracellular polymer substances (EPS) affected the bound water more significantly under a low salinity than a higher one. Based on the thermogravimetric analysis (TGA), granules that developed under a low salinity (such as 1% in R1) exhibited a rich diversity of organic components, and higher total EPS concentrations that was inferred from the ratios of volatile solids to total solids. Additionally, the maximum weight loss rates of the granules in all reactors occurred at a temperature of around 250 °C and the endothermic peaks shifted to a relatively low temperature with the increase of salinity regardless of the existence of EPS. CONCLUSION: The increase of salinity in the substrates slightly decreased the bound water fraction in granules and reduced the richness of the component of granules as well as the biodiversity. This study provides detailed information on the component of aerobic granules.

Note:

http://dx.doi.org/10.1002/jctb.1819

First Author:

王晓昌,lizhihua

Indexed by:

Journal paper

Volume:

卷：In press

Issue:

期：

Page Number:

页：

Translation or Not:

no

Date of Publication:

2008-12-01