Virus elimination in wastewater treatment systems - determining rates and developing mathematical models

废水处理系统中的病毒消除 - 确定速率并开发数学模型

• 批准号: 130567814
• 负责人: Professor Dr.-Ing. Karl-Heinz Rosenwinkel
• 金额: --
• 依托单位: Institut für Siedlungswasserwirtschaft und Abfalltechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/130567814?language=en
• 关键词: Virus; elimination; wastewater; treatment; systems

Human waterborne pathogens such as bacteria, protozoa and enteric viruses in surface water, which is used for drinking water purposes, are a major health concern. Among the enteric viruses adenovirus 40/41, norovirus, rotavirus and hepatitis A virus occur to a large extent in faecal contaminated water resources worid wide. The main reason for viral contamination of such waters is that during wastewater treatment processes enteric viruses show stronger resistance patterns than bacteria. Thus viral particles are present in the final effluent of wastewater treatment plants and are discharged into surface waters. Dependent on their numbers and on exposure pathways, they cause gastroenteritis related diseases in humans.Up to now the vinjs elimination in wastewater treatment systems, especially in activated sludge processes and separation systems (sedimentation, filtration) is still poorly understood. Therefore in this research project the elimination of F-specific bacteriophages, which are widely used as indicators for enteric viruses in activated sludge systems will be tested dependent on process parameters. In batch experiments selected parameters such as temperature, pH-value, sludge age, sludge loading and hydraulic retention time etc. for virus elimination in activated sludge processes will be determined. The results obtained from those batch experiments will provide fundamental knowledge on process parameters in wastewater treatment plants to achieve maximal viral elimination rates. Additionally the virus removal in sedimentation and filtration processes (separation systems) will be examined. The obtained data will be used to develop a "virus tool" for the existing activated sludge model No. 3 (ASM3), which demonstrates the viral elimination in respect to process parameters for the activated sludge as well as for separation systems. Finally the model will be calibrated, validated and integrated into a plant-wide model. On the basis of the data from our research partners the model will be also applied for virus elimination in rivers.

用于饮用水目的的地表水中的人类水媒病原体，如细菌、原生动物和肠道病毒，是一个主要的健康问题。在肠道病毒腺病毒40/41中，诺如病毒、轮状病毒和甲型肝炎病毒在世界范围内的粪便污染水源中大量存在。这种沃茨的病毒污染的主要原因是在废水处理过程中肠道病毒显示出比细菌更强的抗性模式。因此，病毒颗粒存在于废水处理厂的最终流出物中，并被排放到地表沃茨中。依赖于它们的数量和暴露途径，它们会导致人类肠胃炎相关疾病。到目前为止，对废水处理系统，特别是活性污泥工艺和分离系统（沉淀，过滤）中的vinjs消除仍然知之甚少。因此，在本研究项目中，将根据工艺参数对广泛用作活性污泥系统中肠道病毒指示剂的F特异性噬菌体的消除进行测试。在间歇实验中，将确定用于活性污泥法中病毒去除的选定参数，如温度、pH值、污泥龄、污泥负荷和水力停留时间等。从这些批实验中获得的结果将提供有关废水处理厂工艺参数的基础知识，以实现最大的病毒消除率。此外，还将检查沉淀和过滤工艺（分离系统）中的病毒去除。所获得的数据将用于为现有的活性污泥模型No.3（ASM 3）开发“病毒工具”，该模型证明了活性污泥和分离系统的工艺参数对病毒的消除。最后，该模型将被校准，验证和集成到一个工厂范围的模型。根据我们的研究伙伴提供的数据，该模型还将用于消除河流中的病毒。