E3S Web Conf.
Volume 237, 20213rd International Symposium on Architecture Research Frontiers and Ecological Environment (ARFEE 2020)
|Number of page(s)||4|
|Section||Environmental Protection and Environmental Engineering|
|Published online||09 February 2021|
Study on Sewage Sludge Drying System With Built-in Solar Drying Bed
Instiute of Refrigeration and Cryogenics, School of Energy and Power; University of Shanghai for Science and Technology; Shanghai 200093; PR China
2 School of Architecture and Civil Engineering; Jiaxing University; Jiaxing; Zhejiang 314001, PR China
3 Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
* Corresponding author: firstname.lastname@example.org (Leren Tao)
In this paper, the renewable energy solar energy is used as the heat source. The combination of solar drying bed and traditional hot air drying can effectively reduce energy consumption and operation cost. The drying chamber is divided into three layers. The top air supply outlet supplies hot air, the middle layer places wet sludge, and the bottom layer uses hot water coil to dry the sludge. The whole drying process is a heat and mass transfer process with convective heat transfer and radiation heat transfer. After analysis and comparison with traditional energy drying, it is found that drying 97.5kg of sewage sludge will save 79% energy, save 12.84 kg of standard coal, reduce 32 kg of carbon dioxide and 1.284 kg of sulphur dioxide.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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