Evaluation of processes to further reduce pathogens in digestate from high solids anaerobic digestion

高固体厌氧消化（HSAD）作为一种废物管理方法，可提供双重效益：**转移堆填区的城市固体废物有机部分，以及回收生物能源**和增值资源。除了产生可再生生物能源外，HSAD过程的残留物可以**潜在地用作土壤改良剂，以增强土壤性质。然而，含有病原体的消化物**的土地应用对公众健康构成重大风险。因此，在土地申请前，必须** **对HSAD残留物进行消毒。常用的进一步减少病原体（PFRPs）的方法包括热干燥、化学稳定等。然而，这些技术已被广泛用于湿性或低固体AD的残留物，并且文献提供的信息有限，这些方法是否可以有效地减少HSAD残留物中的病原体。本项目旨在研究各种PFRPs，以**提高HSAD的环境可持续性。

High solids anaerobic digestion (HSAD) as a waste management practice can provide dual benefits of**diversion of the organic fraction of municipal solid waste (OFMSW) from landfills and recovery of bioenergy**and value-added resources. In addition to generation of renewable bioenergy, residuals from HSAD process can**be potentially applied as a soil amendment to enhance soil properties. However, land application of digestate**containing pathogens poses significant risks to public health. Therefore, residuals from HSAD must be**disinfected before land application. The commonly used processes to further reduce pathogens (PFRPs) include**heat drying, chemical stabilization, etc. However, these techniques have been extensively used for residuals**from the wet or low-solids AD, and literature provides limited information whether these methods can**efficiently reduce pathogens in residuals from HSAD. This project aims to investigate the various PFRPs for**improving the environmental sustainability of HSAD.