Extended Dewatering of Sewage Sludge in Solar Drying Plants

被引：53

作者：

Mathioudakis, V. L. ^{[1
]}

Kapagiannidis, A. G. ^{[1
]}

Athanasoulia, E. ^{[1
]}

Diamantis, V. I. ^{[1
]}

Melidis, P. ^{[1
]}

Aivasidis, A. ^{[1
]}

机构：

[1] Democritus Univ Thrace, Lab Wastewater Management & Treatment Technol, Dept Environm Engn, GR-67100 Xanthi, Greece

来源：

DESALINATION | 2009年 / 248卷 / 1-3期

关键词：

Activated sludge; Dewatering; Sewage sludge; Solar collector; Solar drying; Solar water heater; Greenhouse;

D O I：

10.1016/j.desal.2009.01.011

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A solar drying process was implemented for extended dewatering, volume reduction and partial pathogen control of sewage sludge. The average sludge moisture content decreased from 85% to 6% within 7-12 d during summer, and to 10% within 9-33 days in autumn, resulting to a total volume reduction of 80-85%. Total and fecal coliforms were reduced during summer conditions by two orders of magnitude, resulting to a dry product with 2.10(4) CFU/g DS and 10(3) CFU/g DS, respectively. Incorporating a solar water heater, with water recirculation through the bottom of the plant, the drying process was accelerated by 1-9 d during winter conditions. Solar sludge drying was proved to be efficient for regions which receive high annual solar radiation such as Greece.

引用

页码：733 / 739

页数：7

共 12 条

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