Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China.
Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China; Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China.
Bioresour Technol. 2018 Dec;269:246-254. doi: 10.1016/j.biortech.2018.08.107. Epub 2018 Aug 28.
Membrane bioreactor (MBR) technology is receiving increasing attention in wastewater treatment and reuse. This study presents an integral sustainability evaluation of a full scale MBR plant. The plant is capable of achieving prominent technical performance in terms of high compliance rate, low variation in effluent quality and high removal efficiency during long term operation. It is also more responsive to the new local standard with rigorous limits. However, electricity consumption is found to be the dominant process resulting in elevated life cycle environmental impacts and costs, accounting for 51.6% of the costs. As such, it is suggested to optimize energy use in MBR unit and implement sludge treatment and management. The prolonged membrane life span could also contribute largely to reduced life cycle environmental concerns and expenses. This study is of great theoretical significance and applicable value in guaranteeing the performance and sustainability of large scale MBR schemes.
膜生物反应器（MBR）技术在废水处理和再利用领域受到越来越多的关注。本研究对一个全规模 MBR 工厂进行了整体可持续性评估。该工厂在长期运行中能够实现出色的技术性能，包括高达标率、出水质量波动小和高去除效率。它还能更好地应对具有严格限制的新地方标准。然而，电耗是导致生命周期环境影响和成本升高的主要过程，占总成本的 51.6%。因此，建议优化 MBR 单元的能源利用，并实施污泥处理和管理。延长膜的使用寿命也可以大大减少生命周期的环境问题和费用。本研究对于保证大型 MBR 方案的性能和可持续性具有重要的理论意义和应用价值。
