Abstract

The evaluation of the nitrification kinetics in the simultaneous presence of sulfide and organic matter using zeolite as improver was the main goal of this work. According to the sensitivity and collinearity analyses, five parameters were the most sensitive in the model, whose calibrated values were: μ _{max, AOB} = 0.02642 ± 0.002 h⁻¹; μ _{max, NOB} = 0.3307 ± 0.416 h⁻¹; K _S,NOB = 1.65·10⁻⁶ ± 2.85·10⁻⁶ mgHNO₂-N/L; k _S2 = 0.8213 ± 0.076 and n = 0.6537 ± 0.030. A good fit between the experimental data and the model’s results including the effect of zeolite on the kinetic parameters was obtained, with Theil inequality coefficient values between 0.109 and 0.007 for all the variables studied, with all of these values lower than 0.3. Thus, the model proposed is robust and can simulate the nitrification process in the presence of sulfide and organic matter when zeolite was used as improver.

摘要

这项工作的主要目标是在同时存在硫化物和有机物的情况下，使用沸石作为改进剂，评估硝化动力学。据的灵敏度和共线的分析，五个参数为在模型中，其校准值是最敏感的：μ _最大，AOB = 0.02642±0.002ħ ^-1 ; μ _max时，NOB = 0.3307±0.416ħ ^-1 ; K _S，NOB = 1.65·10 ^-6 ±2.85·10 ^-6 mgHNO ₂ -N / L；k _S2 = 0.8213±0.076和n = 0.6537±0.030。实验数据与模型结果（包括沸石对动力学参数的影响）之间的拟合度很好，所有研究变量的泰勒不等式系数值都在0.109至0.007之间，所有这些值均低于0.3。因此，所提出的模型是鲁棒的，并且当使用沸石作为改良剂时，可以模拟在硫化物和有机物存在下的硝化过程。