Performance evaluation of scale-up combined psychrophilic anaerobic digestion-reverse osmosis processes for the valorisation of organic municipal solid waste

用于有机城市固体废物增值的嗜冷厌氧消化-反渗透组合工艺的放大性能评估

• 批准号: 505734-2017
• 负责人: Rahaman, Saifur
• 金额: $ 0.91万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 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=639416
• 关键词: Performance; evaluation; scale; up; combined

Recently, municipal solid waste (MSW) has been recognised as a valuable resource that can be converted intouseful products via microbially mediated transformations. Although various methods are available for thetreatment of organic waste, anaerobic digestion (AD) appears to be one of the most promising approaches. ADexhibits great potential in both environmental and social sustainability by providing biofuels from therenewable feedstock with nutrients recovered able to be used as fertilizer. Anaerobic digesters can be operatedunder liquid (wet), semi-solid, or solid-state (dry) conditions. Solid-state AD using a liquid inoculumrecirculation-percolation method of operation at psychrophilic temperatures is a promising, cost-effectiveoption as it results in an exportable dry organic fertilizer in addition to the production of a green energy source.Having reverse osmosis (RO) as a post treatment process for the treatment of liquid leachate or reject water canproduce a high quality, treated, liquid nutrient source for agricultural activities. The integration of the recoveryof nutrients (as organic fertilizer) along with energy recovery through AD could largely improve the bioenergyefficiency and fertilizer quality, and also provide options for water reuse in non-potable applications. In ourrecently completed project, the aforementioned technique was successfully experimented using a lab-scaleapproach. In this proposed study, a scale-up study (i.e. 200 times bigger than the lab-scale digester) will beconducted to validate the lab-study results and to redesign the post treatment techniques suchcoagulation-flocculation/RO process, rendering them optimal for the scale-up digesters' effluent/rejectwastewater. The outcome of this scale-up study will significantly add value for Bio-Terre Systems Inc., andCanada in general. In effect, this project aims to develop energy efficient solutions for municipal food sectors,and preserve the quality of our environment by reducing greenhouse gas (GHG) emissions. In addition, theend-product can be used as a valuable organic fertilizer and treated water can be reused fornon-potable/industrial purposes.

最近，城市固体废物（MSW）已被公认为是一种宝贵的资源，可以通过微生物介导的转化转化为无害的产品。虽然有各种方法可用于处理有机废物，厌氧消化（AD）似乎是最有前途的方法之一。AD通过从可再生原料中提供生物燃料，回收的营养物质可用作肥料，在环境和社会可持续性方面具有巨大的潜力。厌氧消化器可以在液体（湿），半固体或固态（干）条件下操作。固态反渗透是一种在低温下操作的液体接种物再循环-渗滤方法，是一种有前途的、具有成本效益的选择，因为它除了生产绿色能源外，还可以生产可出口的干有机肥料。反渗透（RO）作为处理液体渗滤液或废水的后处理工艺，可以为农业活动生产高质量的、经过处理的液体营养源。通过AD将养分回收（作为有机肥料）与能量回收结合沿着可以大大提高生物能源效率和肥料质量，并且还为非饮用水应用中的水再利用提供了选择。在我们最近完成的项目中，上述技术已成功地使用实验室规模的方法进行了实验。在这项拟议的研究中，将进行一项规模扩大研究（即比实验室规模的消化池大200倍），以验证实验室研究结果，并重新设计后处理技术，如混凝-絮凝/RO工艺，使其成为规模扩大消化池的流出物/废弃废水的最佳选择。这项规模扩大研究的结果将大大增加生物地球系统公司的价值，和加拿大。实际上，该项目旨在为市政食品行业开发节能解决方案，并通过减少温室气体（GHG）排放来保护我们的环境质量。此外，最终产品可用作有价值的有机肥料，处理后的水可重新用于非饮用/工业用途。