Universidad Autónoma Metropolitana-Iztapalapa, Departamento de Biotecnología, Mexico.
Bioresour Technol. 2011 Feb;102(3):3623-5. doi: 10.1016/j.biortech.2010.10.127. Epub 2010 Nov 3.
A nitrifying continuous stirred tank reactor was used as multipurpose bioreactor and it was operated for 325 days at 220 mg NH(4)(+)-N/Ld, 89 mg p-cresol-C /Ld and 36-76 mg S(2-)/Ld. The bioreactor was fed in sequential way, firstly with ammonium, achieving a consumption efficiency of 89%, with a nitrate yield of 0.99. Afterward, p-cresol was fed, achieving ammonium and p-cresol consumption efficiencies of 95% and 100%, respectively. The nitrate yield was higher and no aromatic intermediaries from p-cresol were detected. Finally sulfide was fed and the consumption efficiencies for all substrates were of 100%, being nitrate, HCO(3)(-) and sulfate the end products. The kinetic results showed that biological sulfide consumption was 13-fold faster than the chemical oxidation. This is the first time that a nitrifying reactor can be used for multiple purposes and also for the simultaneous removal of ammonium, sulfide and p-cresol in one step.
采用硝化连续搅拌槽式反应器作为多用途生物反应器，在 220mgNH(4)(+) - N/Ld、89mgp- 甲酚 - C/Ld 和 36-76mgS(2-)/Ld 的条件下运行 325 天。生物反应器采用顺序进料方式，首先进料氨，消耗效率为 89%，硝酸盐生成率为 0.99。随后，进料 p- 甲酚，实现了 95%的氨和 100%的 p- 甲酚消耗效率，同时没有检测到来自 p- 甲酚的芳香中间体。最后进料硫化物，所有底物的消耗效率均为 100%，最终产物为硝酸盐、HCO(3)(-)和硫酸盐。动力学结果表明，生物硫化物的消耗速度比化学氧化快 13 倍。这是首次利用硝化反应器实现多种用途，以及在一步同时去除氨、硫化物和 p- 甲酚。
