دانلود کتاب حذف پاتوژن در سیستم های تصفیه لجن دانه ای هوازی

Pathogens removal from wastewater is crucial for preserving public health. Advanced wastewater treatment plants such as conventional activated sludge (CAS) systems are typically designed for organic matter and nutrient removal, pathogenic organisms are only removed to a limited extend. Attachment to particles followed by protozoa predation are identified as the mechanisms behind pathogen removal in CAS systems. Attached organisms leave the system via the wastage. The aerobic granular sludge (AGS) system is a relatively new and effective wastewater treatment technology that can handle physicochemical constituents’ removal simultaneously and in a single process stage. To anticipate if and how pathogen removal in the AGS system takes place, the process needs to be evaluated; in full-scale applications to measure the removal under real life conditions as well as in laboratory-scale reactors to separately assess the different removal mechanisms. This PhD thesis focusses on the mechanisms behind the pathogen removal and degradation processes in AGS systems.