Development of the advanced anaerobic digestion technology for the energy recovery and emission reduction

开发先进的厌氧消化技术以实现能量回收和减排

• 批准号: RGPIN-2017-04533
• 负责人: Chang, Sheng
• 金额: $ 1.53万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=636574
• 关键词: Development; advanced; anaerobic; digestion; technology

Reducing carbon footprints of wastewater treatment plants (WWTP) has become one of the main drivers for the innovation of wastewater treatment technology due to the growing concern on climate change. The anaerobic digestion (AD) process plays an important role in energy recovery and waste sludge stabilisation. Built upon our present research findings, this program aims to develop an advanced sludge anaerobic digestion technology that is characterised by a two-stage AD coupled with an intermediate thermal hydrolysis (TH) treatment, named as an AD-iTH process. The novelty of the AD-iTH technology can be ascribed to the intermediate TH process that is designed to treat the non-readily biodegradable sludge (nrbSludge). As demonstrated by our preliminary study, the AD-iTH is of potential to greatly enhance the VSS destruction, biogas production, and pathogen reduction. This program will focus on the TH treatment of nrbSludge, the AD-iTH process optimisation, the mechanisms of AD-iTH process, and the heavy metal bioavailability and fate mechanism in the AD-iTH system. The development and applications of the AD-iTH will bring significant economic and environmental benefits to the Canadian WWTPs through reducing waste sludge production, improving energy recovery, and reducing the solid management cost. In addition, this research program will provide excellent HQP training opportunities and generate frontier knowledge on the advanced AD technology. Therefore, the outcomes of this program will exert significant impact on the AD technology advancement and the practical applications of AD for energy recovery and emission reduction.

随着人们对气候变化的日益关注，减少污水处理厂的碳足迹已成为污水处理技术创新的主要驱动力之一。厌氧消化（AD）过程在能量回收和废弃污泥稳定化方面起着重要作用。基于我们目前的研究成果，该计划旨在开发一种先进的污泥厌氧消化技术，其特点是两阶段AD与中间热水解（TH）处理相结合，称为AD-iTH工艺。AD-iTH技术的新奇可归因于设计用于处理不易生物降解的污泥（nrbSludge）的中间TH工艺。正如我们的初步研究所证明的，AD-iTH具有极大地增强VSS破坏、沼气产生和病原体减少的潜力。本项目将重点研究nrb污泥的TH处理、AD-iTH工艺优化、AD-iTH工艺的机理以及AD-iTH系统中重金属的生物有效性和归宿机制。AD-iTH的开发和应用将为加拿大污水处理厂带来显著的经济和环境效益，减少污泥产量，提高能源回收率，降低固体管理成本。此外，这项研究计划将提供优秀的HQP培训机会，并产生先进的AD技术的前沿知识。因此，该项目的成果将对AD技术的进步和AD在能源回收和减排方面的实际应用产生重大影响。