UNS: Coupled Hybrid Anaerobic Reactors to Generate Energy (CHARGE)

UNS：耦合混合厌氧反应器产生能量（CHARGE）

• 批准号: 1512787
• 负责人: Linda Figueroa
• 金额: $ 32.87万
• 依托单位: Colorado School of Mines
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1512787&HistoricalAwards=false
• 关键词: UNS; Coupled; Hybrid; Anaerobic; Reactors

1512787FigueroaDomestic wastewater typically contains calorific energy which represents five times the energy required for treatment. Municipal wastewater treatment plants have the potential to capture most of the energy present in the waste organic matter, but smaller utilities treating less than 10 million gallons per day, which account for 97% of the wastewater treatment systems in the US, are often reluctant to adopt complex and often costly resource recovery systems. A treatment paradigm using anaerobic mainstream wastewater treatment for primary and secondary treatment can meet secondary standards, harvest the energy from organic matter and eliminate separate sludge digestion. The anaerobic baffled reactors - expanded granular sludge bed - microscreen system represents a transformational change in the wastewater treatment paradigm from multiple separate capital-intensive energy-consuming unit processes to fewer simpler unit processes that maximize energy productivity and payback.The advantage of the proposed coupled hybrid anaerobic reactor system lies in the advancement of knowledge regarding the factors that control the microbial and solids dynamics to meet the performance goals of a low complexity energy-neutral system at ambient wastewater conditions. The hypothesis is that a hybrid anaerobic baffled reactors - expanded granular sludge bed - microscreen can treat raw wastewater to meet secondary standards and produce stoichiometric amounts of methane. The supporting objectives are to: 1) optimize the hybrid anaerobic reactor system with real wastewater at bench- to demonstration-scale to produce secondary treatment quality, 2) generate stoichiometric amounts of methane from BOD removal, 3) develop a process model to predict anaerobic baffled reactors - expanded granular sludge bed - microscreen performance, and, 4) evaluate the life cycle impacts of the hybrid system by characterizing details needed to add the linked expanded granular sludge bed and microscreen to an existing anaerobic baffled reactors life cycle assessment. The expected outcome is increased process understanding for design and implementation of a low complexity hybrid anaerobic system that will generate energy while conditioning the water for autotrophic nitrogen removal and phosphorus recovery. The team brings decades of experience in microbial process modeling, microbial ecology, environmental engineering, wastewater plant and utility operations. The research will facilitate state and federal regulatory acceptance and industry adoption of new energy positive technology for full-scale applications. The expected transformative results will be disseminated via numerous avenues including workshops at regional council meetings and national conferences, as well as a technology diffusion workshop that will engage change agents from the wastewater treatment industry. The proposed project will also broaden participation in STEM, as the PIs will continue their extensive history in this area by recruiting as researchers undergraduate and graduate students from underrepresented groups, as well as low-income first-generation community college students via our partnership with a local community college. The investigators will also translate conceptual content from these studies into established pre-college outreach efforts to inspire interest in STEM fields in local disadvantaged and predominantly minority school districts.

1512787 Figueroa生活废水通常含有相当于处理所需能量五倍的热能。城市污水处理厂有潜力捕获废物有机物中存在的大部分能量，但每天处理不到1000万加仑的小型公用事业公司（占美国污水处理系统的97%）通常不愿意采用复杂且通常昂贵的资源回收系统。采用厌氧主流污水处理进行一级和二级处理的处理范例可以满足二级标准，从有机物中收获能量，并消除单独的污泥消化。厌氧折流板反应器-膨胀颗粒污泥床-微筛系统代表了废水处理范式的转型变化，从多个单独的资本密集型能源，所提出的耦合混合厌氧反应器系统的优点在于关于控制微生物和固体的因素的知识的进步。动态，以满足在环境废水条件下的低复杂性能量中性系统的性能目标。该假设是，混合厌氧折流板反应器-膨胀颗粒污泥床-微筛可以处理原废水，以满足二级标准，并产生化学计量的甲烷量。支助目标是：1）以实验室到示范规模用真实的废水优化混合厌氧反应器系统以产生二级处理质量，2）从BOD去除产生化学计量量的甲烷，3）开发过程模型以预测厌氧折流板反应器-膨胀颗粒污泥床-微筛性能，以及，4）通过表征将连接的膨胀颗粒污泥床和微筛添加到现有厌氧折流板反应器生命周期评估中所需的细节来评估混合系统的生命周期影响。预期的结果是增加过程的理解，设计和实施的低复杂性的混合厌氧系统，将产生能量，同时调理水的自养脱氮和磷回收。该团队在微生物过程建模、微生物生态学、环境工程、污水处理厂和公用事业运营方面拥有数十年的经验。这项研究将促进州和联邦监管机构的接受和行业采用新能源积极技术的全面应用。将通过多种渠道传播预期的变革成果，包括在区域理事会会议和国家会议上举办讲习班，以及举办一个技术传播讲习班，让废水处理行业的变革推动者参与进来。拟议的项目还将扩大STEM的参与，因为PI将继续其在这一领域的广泛历史，通过招募来自代表性不足群体的本科生和研究生作为研究人员，以及通过我们与当地社区学院的合作伙伴关系招募低收入的第一代社区学院学生。研究人员还将把这些研究中的概念内容转化为既定的大学预科外展工作，以激发当地弱势和主要少数民族学区对STEM领域的兴趣。