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Direct GHG emissions from a pilot scale MBR-process treating municipal wastewater

Advances in Climate Change Research 2022年第1期13卷 138-145页

作者： Christian BARESEL Jingjing YANG Niclas BORNOLD kare.tjus Linda KANDERS Klara WESTLING IVL Swedish Environmental Research Institute AB Valhallavagen 81Stockholm 10031Sweden

To evaluate direct greenhouse gas emissions from Membrane Biological Reactor(MBR),measurements of nitrous oxide(N_(2)O)and methane(CH_(4))were made at a pilot-scale MBR treating municipal wastewater Measurements were conducted during two campaigns with some changes in processes,*** a pre-aeration tank in the second measurement,different distributions of aeration in the treatment line,not the same wastewater inflow rate,two types of ultrafiltration *** was found that about 0.004% and 0.07% of the total ammonium loads were emitted as N_(2)O,CH_(4) emissions were 0.026% and 0.12% of incoming TOC(0.008% and 0.04% of incoming COD)in 2014 and *** obtained N_(2)O emission values were relatively *** study suggested that a high aeration at the beginning of the treatment line may result in significantly high emissions of both N_(2)O and CH_(4).A significant change in aeration in the membrane ultrafiltration tank did not have the same *** MBR process is known for high quality effluent but have been questioned due to its higher carbon footprint due to energy *** study gave a reference case about direct GHG emissions from MBR process and provide information for the further evaluation of MBR processes.

关键词： Greenhouse gases(GHGs) Nitrous oxide(N_(2)O) Methane(CH_(4)) Membrane biological reactor(MBR)

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