Institute of Sanitary and Environmental Engineering, Technische Universitaet Braunschweig (Braunschweig Institute of Technology), Pockelsstrasse 2a, 38106 Braunschweig, Germany E-mail:
Water Sci Technol. 2014;69(1):15-24. doi: 10.2166/wst.2013.518.
Sewage sludge produced during municipal wastewater treatment has to be treated efficiently in order to reduce impacts on the environment and on public health. In Germany and many countries, large quantities of sludge are reused in agriculture in order to recycle nutrients and organic material. In order to quantify the effect of different ambient temperatures on conventional and advanced sludge treatment technologies as well as on disinfection efficiency, a comprehensive research study was performed at Braunschweig Institute of Technology. The detailed results show that ambient temperature has a strong effect on biological liquid sludge stabilization and on natural dewatering and drying technologies, although microbiological quality of treated sludge, indicated by Escherichia coli concentration, does not meet the requirements for unrestricted reuse in agriculture. Composting and lime treatment of sludge are most efficient on reducing E. coli, as high temperatures and high pH values arise in the material respectively.
城市污水处理过程中产生的污水污泥必须进行有效处理，以减少对环境和公众健康的影响。在德国和许多国家，大量的污泥被重新用于农业，以回收营养物质和有机物质。为了量化不同环境温度对传统和先进污泥处理技术以及消毒效率的影响，布伦瑞克技术研究所进行了一项综合性研究。详细结果表明，环境温度对生物液污泥稳定化和自然脱水干燥技术有很强的影响，尽管处理后的污泥的微生物质量，以大肠杆菌浓度为指标，不符合在农业中不受限制地再利用的要求。堆肥和石灰处理污泥对减少大肠杆菌最为有效，因为在这两种处理方法中，材料中都会产生高温和高 pH 值。
