This work aimed to achieve partial nitrification (PN) in a Sequencing Moving Bed Biofilm Reactor SMBBR with zeolite as a biomass carrier by using sulfide pulses in the presence of organic matter as an inhibitor. Two conditions were evaluated: sulfide (HS⁻) = 5 mg S/L and vvm (air volume per liquid volume per minute, L of air L⁻¹ of liquid min⁻¹) = 0.1 (condition 1); and a HS⁻ = 10 mg S/L and a vvm = 0.5 (condition 2). The simultaneous effect of organic matter and sulfide was evaluated at a Chemical Oxygen Demand (COD) = 350 mg/L and HS⁻ = 5 mg S/L, with a vvm = 0.5. As a result, using the sulfide pulse improved the nitrite accumulation in both systems. However, Total Ammonia Nitrogen (TAN) oxidation in both processes decreased by up to 60%. The simultaneous presence of COD and sulfide significantly reduced the TAN and nitrite oxidation, with a COD removal yield of 80% and sulfide oxidation close to 20%. Thus, the use of a sulfide pulse enabled PN in a SMBBR with zeolite. Organic matter, together with the sulfide pulse, almost completely inhibited the nitrification process despite using zeolite.

中文翻译：

---

以沸石为生物质载体的顺序移动床生物膜反应器 (SMBBR) 中的部分硝化：硫化物脉冲和有机物存在的影响

这项工作旨在通过在有机物作为抑制剂的存在下使用硫化物脉冲在以沸石为生物质载体的顺序移动床生物膜反应器 SMBBR 中实现部分硝化 (PN)。评估了两种条件：硫化物 (HS ^- ) = 5 mg S/L 和 vvm（每分钟液体体积的空气体积，L 空气 L ^-1液体 min ^-1）= 0.1（条件 1）；和 HS ^- = 10 mg S/L 和 vvm = 0.5（条件 2）。在化学需氧量 (COD) = 350 mg/L 和 HS ^-下评估有机物和硫化物的同时影响= 5 mg S/L，vvm = 0.5。结果，使用硫化物脉冲改善了两个系统中亚硝酸盐的积累。然而，两个过程中的总氨氮 (TAN) 氧化降低了 60%。COD 和硫化物的同时存在显着降低了 TAN 和亚硝酸盐的氧化，COD 去除率为 80%，硫化物氧化接近 20%。因此，在具有沸石的 SMBBR 中使用硫化物脉冲使 PN 成为可能。尽管使用了沸石，但有机物与硫化物脉冲一起几乎完全抑制了硝化过程。