Empirical characterisation and mathematical modelling of settlement in composting batch reactors

被引：3

作者：

Illa, Josep ^{[1
]}

Prenafeta-Boldu, Francesc X. ^{[2
,3
]}

Bonmati, August ^{[2
]}

Flotats, Xavier ^{[2
,4
]}

机构：

[1] Univ Lleida, Dept Comp & Ind Engn, E-25001 Lleida, Spain

[2] GIRO Technol Ctr, E-08100 Barcelona, Spain

[3] IRTA, E-08007 Barcelona, Spain

[4] UPC, Dept Agrifood Engn & Biotechnol, E-08860 Barcelona, Spain

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 104卷

关键词：

Composting; Numerical modelling; Pile settlement; Respiratory quotient; ORGANIC WASTES; LANDFILL; BIODEGRADATION; KINETICS; SLUDGE; GAS;

D O I：

10.1016/j.biortech.2011.10.031

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The settlement of organic matter during composting was measured at different levels during the active biodegradation phase in forced-aerated static reactors loaded with different mixtures of organic wastes. The temperature evolution and the concentration of oxygen and carbon dioxide were also recorded in the exhaust gases. Two two-parameter equations and their generalised three-parameter form were fitted to the experimental data and their capability to predict settlement as a function of time was discussed. The settlement field inside the reactors was successfully described with a linear profile. At any given time and vertical position, mass settlement was proportional to the initial height after reactor loading. Furthermore, a relationship linking settlement to biological activity was also proposed. Under all tested experimental conditions, settlement showed a clear correlation with the cumulative oxygen consumption that was modelled with a three parameter equation. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：451 / 458

页数：8

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