Exploiting Life Cycle Assessment Results to Evaluate Innovation Strategies for Anaerobic Membrane Bioreactors Treating Domestic Wastewater

摘要：

　　A pilot-scale anaerobic membrane bioreactor (AnMBR) was built at a domestic wastewater treatment plant (Northfield,Michigan,USA) to study AnMBR operation at ambient temperatures.The system was fed with preliminary effluent and employed a conventional flat sheet polymeric membrane unit and a rotating ceramic disc system.In contrast to previous studies suggesting that the latter membrane system would require less energy for fouling mitigation,our life cycle cost assessment reveals comparable energy consumption for both systems when treating 5 million gallons per day (MGD) (~20,000 m3 per day) domestic wastewater at 15℃.The membrane biofilm (fouling layer) contributed to organics removal in the pilot-scale AnMBR.The relative contribution of biofilm versus suspended biomass to organics removal in the ceramic disc AnMBR increased with decreasing temperatures.Preliminary observations suggest that the ceramic disc AnMBR would be easier to operate and could exhibit reduced environmental impacts related to dissolved methane emissions compared to the flat sheet AnMBR system.Our findings highlight the need for accurate monitoring of energy use and dissolved methane production for different AnMBR configurations.

关键词： Anaerobic membrane bioreactor domestic wastewater dissolved methane ceramic disc flat sheet

作者: Caroline Van Steendam Timothy Fairley Ilse Smets Steven Skerlos Lutgarde Raskin

作者单位: Dept.of Civil and Environmental Eng., University of Michigan, 1351 Beal Ave., Ann Arbor, 48104, MI, Dept.of Chemical Eng., KU Leuven, Celestijnenlaan 200F, B-3001 Heverlee, Belgium

会议类型: 国际会议

会议名称: The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)

会议地点: 北京

会议语种:英文

页码: 809-813

在线出版日期: 2017-10-17（万方平台首次上网日期，不代表论文的发表时间）