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Pure water and resource recovery from municipal wastewater using high-rate activated sludge, reverse osmosis, and mainstream anammox: A pilot scale study
Water Research ( IF 11.4 ) Pub Date : 2024-09-13 , DOI: 10.1016/j.watres.2024.122443 Haoran Zhao , Yu Zhou , Lianpei Zou , Chihao Lin , Jianyong Liu , Yu-You Li
Water Research ( IF 11.4 ) Pub Date : 2024-09-13 , DOI: 10.1016/j.watres.2024.122443 Haoran Zhao , Yu Zhou , Lianpei Zou , Chihao Lin , Jianyong Liu , Yu-You Li
In response to the escalating global water scarcity and the high energy consumption associated with traditional wastewater treatment plants, there is a growing demand for transformative wastewater treatment processes that promise greater efficiency and sustainability. This study presents an innovative approach for municipal wastewater treatment that integrates high-rate activated sludge with membrane bio-reactor (HRAS-MBR), reverse osmosis (RO) and partial nitrification-anammox (PN/A). With an influent of 8.4 m³/d, the HRAS-MBR demonstrated a removal efficiency of approximately 85 % for chemical oxygen demand (COD), with over 70 % of it being recovered for energy production. The RO system achieved a recovery rate of 75 % for the influent, producing pure water with an electrical conductivity of 50 μS/cm. Concurrently, it concentrated ammonia, thereby enhancing the effectiveness of the PN/A process for nitrogen removal in the mainstream, resulting in a removal efficiency exceeding 85 %. Notably, the HRAS-MBR achieved significant phosphorus removal without chemical additives, attributed to the presence of influent calcium and magnesium ions. Overall, this integrated system reduced the net energy consumption for reclaimed water production by about 26 % compared to conventional methods. Additionally, the new process produced a revenue of 0.75 CNY/m³, demonstrating considerable economic and environmental benefits. This pilot-scale study offers a viable alternative for wastewater treatment and water reuse in water-scarce regions, contributing to sustainable water resource management.
中文翻译:
使用高速活性污泥、反渗透和主流厌氧氨氧化从城市污水中回收纯水和资源:一项中试规模研究
为了应对日益严重的全球水资源短缺和与传统污水处理厂相关的高能耗,人们对变革性废水处理工艺的需求不断增长,这些工艺有望提高效率和可持续性。本研究提出了一种将高速活性污泥与膜生物反应器 (HRAS-MBR)、反渗透 (RO) 和部分硝化-厌氧氨氧化 (PN/A) 相结合的城市污水处理创新方法。HRAS-MBR 的进水量为 8.4 m³/d,对化学需氧量 (COD) 的去除效率约为 85%,其中 70% 以上被回收用于能源生产。RO 系统实现了 75% 的进水回收率,可产生电导率为 50 μS/cm 的纯水。同时,它浓缩氨,从而提高了主流 PN/A 工艺脱氮的有效性,从而使去除效率超过 85%。值得注意的是,HRAS-MBR 在没有化学添加剂的情况下实现了显着的磷去除,这归因于进水钙离子和镁离子的存在。总体而言,与传统方法相比,该集成系统将再生水生产的净能耗降低了约 26%。此外,新工艺产生的收入为 0.75 元/立方米,显示出可观的经济和环境效益。这项中试规模的研究为缺水地区的废水处理和水再利用提供了一种可行的替代方案,有助于可持续的水资源管理。
更新日期:2024-09-13
中文翻译:
使用高速活性污泥、反渗透和主流厌氧氨氧化从城市污水中回收纯水和资源:一项中试规模研究
为了应对日益严重的全球水资源短缺和与传统污水处理厂相关的高能耗,人们对变革性废水处理工艺的需求不断增长,这些工艺有望提高效率和可持续性。本研究提出了一种将高速活性污泥与膜生物反应器 (HRAS-MBR)、反渗透 (RO) 和部分硝化-厌氧氨氧化 (PN/A) 相结合的城市污水处理创新方法。HRAS-MBR 的进水量为 8.4 m³/d,对化学需氧量 (COD) 的去除效率约为 85%,其中 70% 以上被回收用于能源生产。RO 系统实现了 75% 的进水回收率,可产生电导率为 50 μS/cm 的纯水。同时,它浓缩氨,从而提高了主流 PN/A 工艺脱氮的有效性,从而使去除效率超过 85%。值得注意的是,HRAS-MBR 在没有化学添加剂的情况下实现了显着的磷去除,这归因于进水钙离子和镁离子的存在。总体而言,与传统方法相比,该集成系统将再生水生产的净能耗降低了约 26%。此外,新工艺产生的收入为 0.75 元/立方米,显示出可观的经济和环境效益。这项中试规模的研究为缺水地区的废水处理和水再利用提供了一种可行的替代方案,有助于可持续的水资源管理。