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Anaerobic membrane bioreactors (AnMBR) treating urban wastewater in mild climates.
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-07-02 , DOI: 10.1016/j.biortech.2020.123763
Ángel Robles 1 , Freddy Durán 2 , Juan Bautista Giménez 3 , Emérita Jiménez 2 , Josep Ribes 1 , Joaquín Serralta 3 , Aurora Seco 1 , José Ferrer 3 , Frank Rogalla 2
Affiliation  

Feasibility of an AnMBR demonstration plant treating urban wastewater (UWW) at temperatures around 25–30 °C was assessed during a 350-day experimental period. The plant was fed with the effluent from the pre-treatment of a full-scale municipal WWTP, characterized by high COD and sulfate concentrations. Biodegradability of the UWW reached values up to 87%, although a portion of the biodegradable COD was consumed by sulfate reducing organisms. Effluent COD remained below effluent discharge limits, achieving COD removals above 90%. System operation resulted in a reduction of sludge production of 36–58% compared to theoretical aerobic sludge productions. The membranes were operated at gross transmembrane fluxes above 20 LMH maintaining low membrane fouling propensities for more than 250 days without chemical cleaning requirements. Thus, the system resulted in net positive energy productions and GHG emissions around zero. The results obtained confirm the feasibility of UWW treatment in AnMBR under mild and warm climates.



中文翻译:

厌氧膜生物反应器(AnMBR)在温和的气候下处理城市废水。

在350天的实验期内,评估了AnMBR示范工厂在25–30°C左右温度下处理城市废水(UWW)的可行性。该工厂进料了全规模市政污水处理厂的预处理废水,其特征在于高的COD和硫酸盐浓度。尽管一部分可生物降解的化学需氧量被硫酸盐还原生物消耗,但UWW的生物可降解性达到了高达87%的值。废水中的COD保持在废水排放限值以下,实现了超过90%的COD去除率。与理论好氧污泥产量相比,系统运行导致污泥产量减少了36–58%。膜在高于20 LMH的总跨膜通量下运行,保持较低的膜结垢倾向超过250天,而无需化学清洁的要求。从而,该系统产生的净正能源产量和温室气体排放量约为零。获得的结果证实了在温和和温暖的气候下在AnMBR中进行UWW处理的可行性。

更新日期:2020-07-06
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