有机物对SAD的影响及其数学模拟

通过血清瓶批式实验，研究了不同C/N下葡萄糖和乙酸钠对厌氧氨氧化耦合反硝化系统（SAD）污泥活性及脱氮性能的影响.耦合系统颗粒污泥为在亚硝态氮充足的UASB连续流反应器中培养得到，具有较高的厌氧氨氧化活性和反硝化活性.以葡萄糖为碳源，C/N分别为1，2，4时，厌氧氨氧化活性差异不大，反硝化活性逐渐增加，亚硝态氮最大降解速率分别为0.265，0.345，0.453kgN/（kgVSS·d）；以乙酸钠为碳源，C/N分别为1、2、4时，厌氧氨氧化活性和反硝化活性都无明显差别.相同C/N下，耦合系统以葡萄糖为碳源时的厌氧氨氧化活性较高，以乙酸钠为碳源时的反硝化活性较高.C/N分别为1，2，4时，以葡萄糖为有机物的氨氮最大降解速率分别为乙酸钠的1.15，1.19，1.58倍，以乙酸钠为有机物时反应的亚硝态氮最大降解速率分别为葡萄糖的1.89，1.48，1.15倍.实验的数学模拟结果表明，通过模型的模拟，能较为准确地预测实验过程中氮素的变化趋势，在C/N为1~4时耦合系统中颗粒污泥的厌氧氨氧化活性无较大变化.

Effect of organic compounds on the SAD and its mathematical simulation

The denitrification performance of simultaneous anammox and denitrification (SAD) granular sludge under different C/N was studied by batch test. The coupled system granular sludge was cultured in a UASB reactor with sufficient nitrogen,and it had high anammox activity and denitrification activity. Using glucose as carbon source, when the C/N were 1, 2, 4, there was no significant difference in the activity of ANAMMOX, and the denitrification activity increased gradually. The maximum rate of NO₂^--N degradation was 0.265, 0.345, and 0.453kgN/(kgVSS·d), respectively. When sodium acetate was used as the carbon source and the C/N ratios were 1, 2, and 4, respectively, neither of the ANAMMOX activity or the denitrification activity was affected. Under the same C/N, the activity of ANAMMOX with glucose as the carbon source was higher, while the denitrification activity with sodium acetate as the carbon source was higher.When C/N was 1, 2 and 4, the maximum degradation rate of NH₄⁺-N with glucose as organic matter was 1.15, 1.19, 1.58times of sodium acetate respectively. The maximum degradation rate of NO₂^--N with sodium acetate as organic matter was 1.89, 1.48 and 1.15times of glucose, respectively. The mathematical simulation results of the experiment showed that the models can accurately predict the trend of nitrogen change during the experiment. There was no significant change in the ANAMMOX activity of the granular sludge in the coupled system when the C/N ratio was 1~4.