Innovative system and process for optimization of wastewater treatment

优化废水处理的创新系统和工艺

• 批准号: 543932-2019
• 负责人: Acharya, Bishnu
• 金额: $ 2.42万
• 依托单位: University of Prince Edward Island
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=685145
• 关键词: Innovative; system; process; optimization; wastewater

Charlottetown Pollution Control Plant (CPCP) is transforming into the Resource Recovery Facility. The goal is to create integrated sustainable systems to address energy needs and produce valuable products with the long-term financial, environmental and social benefits. CPCP treats approximately 7 million cubic meters of wastewater annually producing roughly 3700 tonnes of bio-solids. The wastewater treatment plant consists of primary and secondary treatment; the sludge is anaerobically digested for producing biogas and class-A biosolids. Wastewater treatment is an energy intensive process. The consumption is mainly attributed to the pumps and air blowers for moving wastewater and air to the aeration tanks, respectively. Air blowers account for 70% of the total electricity consumption in wastewater treatment plants. The supply of air promotes microbial growth, which feeds on organic matter. The process produces a flock, which settles to the bottom of the tank. The overall objective of the proposed research is to develop a sustainable system and process for improving the efficiency of the municipal wastewater treatment in terms of energy use and value recovery. The proposed research is divided into the following objectives: a) Develop robust, sensitive and consistent real-time in-line bacteria-based BOD biosensors; b) Characterize the impacts of using a separation column and an array of single semi-specific bacteria strain on the specificity of current bacteria-based biosensors; c) Identify the impact of biochar type, size and loading on the performance of the aeration tank through characterizing the impact of biochar on the settleability of sludge, air requirement, and treatment; d) Identify the impact of biochar type, size and loading on the performance of anaerobic digestion through characterizing the impact on rate of gas production, total gas yield and composition, and the quality of biosolids. The outcomes of the proposed research will support CPCP initiatives for reducing their carbon footprint and meeting their sustainability objectives.

夏洛特敦污染控制厂 (CPCP) 正在转变为资源回收设施。目标是创建综合可持续系统来满足能源需求并生产具有长期财务、环境和社会效益的有价值的产品。 CPCP 每年处理约 700 万立方米废水，产生约 3700 吨生物固体。废水处理厂分为一级处理和二级处理；污泥经过厌氧消化产生沼气和A级生物固体。废水处理是一个能源密集型过程。消耗主要归因于分别将废水和空气输送至曝气池的泵和鼓风机。风机耗电量占污水处理厂总耗电量的70%。空气的供应促进了以有机物为食的微生物的生长。该过程会产生一群，并沉降到水箱底部。拟议研究的总体目标是开发可持续的系统和工艺，以提高城市废水处理在能源使用和价值回收方面的效率。拟议的研究分为以下目标： a) 开发稳健、灵敏且一致的实时在线细菌 BOD 生物传感器； b) 表征使用分离柱和单一半特异性细菌菌株阵列对当前基于细菌的生物传感器的特异性的影响； c) 通过表征生物炭对污泥沉降性、空气需求和处理的影响，确定生物炭类型、尺寸和负载对曝气池性能的影响； d) 通过表征对气体产生速率、气体总产量和成分以及生物固体质量的影响，确定生物炭类型、尺寸和负载对厌氧消化性能的影响。拟议研究的结果将支持 CPCP 减少碳足迹和实现可持续发展目标的举措。