Effect of substrate feeding on viscosity evolution of anaerobic granular sludges

被引:0
|
作者
Pevere, A. [1 ]
d'Abzac, P. [1 ]
van Hullebusch, E. [2 ]
Lens, P. N. L. [3 ]
Guibaud, G. [1 ]
机构
[1] Univ Limoges, Groupement Rech Eau Sol Environm, Fac Sci & Tech, F-87060 Limoges, France
[2] Univ Paris Est, Lab Geomateriaux & Environm, F-77454 Marne La Vallee 2, France
[3] Wageningen Univ, Subdept Environm Technol, NL-6700 EV Wageningen, Netherlands
关键词
anaerobic granular sludge; substrate feeding; viscosity; POLYMERIC SUBSTANCES; RHEOLOGICAL CHARACTERIZATION; EXTRACELLULAR POLYMERS; ACTIVATED-SLUDGE; UASB REACTORS; WASTE-WATER; WASTEWATERS; EXTRACTION; DYNAMICS; BIOFILMS;
D O I
10.2166/wst.2010.286
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This work aims to describe the effect of the feeding regime of anaerobic activity tests on the limit viscosity (mu(lim)) evolution of the granules. Batch experiments were performed with 3 different sources of substrate: acetate, peptone, and glucose. Despite, the substrate origin was shown to affect the mu(lim) evolution of granules, no clear relationship was found between the mu(lim) evolution, type of substrate and other granule physico-chemical characteristics (i.e. pH; % of Volatile Suspended Solid; concentration of exopolymeric substances, divalent cations, P and S). The origin of granules and the substrate feeding regime modify the surface shape of the granules and may change granule-granule interactions under a shear stress, thus affecting the evolution of the v value during long term reactor operation.
引用
收藏
页码:132 / 139
页数:8
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