Compared with activated sludge intensification by integrating membrane aerated biofilm reactors (MABRs) to promote sustainable nitrogen removal, treatment of anaerobic reactors effluents with MABRs is scarcely studied. Here the capability of a flat sheet MABR for nitrogen removal and nitrification of real wastewater previously treated in an anaerobic filter was analyzed. Removal of 71–81 % of ammonia with 54–72 % conversion to nitrate, while eliminating 13–28 % of total inorganic nitrogen in water containing 38–80 mg ammonia-N/L and 25–78 mg COD/L was achieved with aeration at atmospheric pressure. Experimental data in combination with stoichiometry and sequencing suggested a combination of autotrophic and heterotrophic bacteria associated to the nitrogen cycle was present in the biofilm. Nitrogen and ammonia removal rates up to 117 mg N/L-d and 258 mg N/L-d, respectively evidenced a competitive nitrogen conversion capability of the flat sheet MABR attained with non-pressurized aeration involving potential energy savings. Effluent content (mg/L) of ammonia 10–17, nitrite 13–23, nitrate 21–37 and phosphate 21–45, is suitable for further nitrogen removal or nutrient recovery as dissolved fertilizer for irrigation.

与通过集成膜曝气生物膜反应器（MABR）来促进可持续脱氮的活性污泥强化相比，用MABR处理厌氧反应器废水的研究很少。这里分析了平板 MABR 对先前在厌氧过滤器中处理过的真实废水进行脱氮和硝化的能力。在含有 38-80 mg 氨氮/L 和 25-78 mg COD/L 的水中，去除了 71-81% 的氨，其中 54-72% 转化为硝酸盐，同时消除了 13-28% 的总无机氮在大气压下通气。实验数据与化学计量和测序相结合表明生物膜中存在与氮循环相关的自养和异养细菌的组合。氮和氨去除率分别高达 117 mg N/Ld 和 258 mg N/Ld，证明了平板 MABR 通过非加压曝气实现的具有竞争力的氮转化能力，涉及潜在的节能。出水氨氮10-17、亚硝酸盐13-23、硝酸盐21-37、磷酸盐21-45含量（mg/L），适合进一步脱氮或养分回收，作为灌溉用溶解肥料。