摘要： 通过正交试验对UASB厌氧氨氧化工艺的影响因素进行量化评价，探索该工艺的最优因素水平，并建立各因素与氨氮去除率的数学模型，对影响规律实现定量分析。正交试验结果表明，各因素的主次顺序为DO > HRT > 葡萄糖 > pH > NaHCO₃ > 温度。最佳反应条件：DO为0.1~0.3 mg/L，葡萄糖为50 mg/L，NaHCO₃为0.5 g/L，pH为8，温度为26℃，HRT为9 h。多因素模型得出氨氮去除率与各因素之间的数学方程式：F（x₁，x₂，x₃，x₄，x₅，x₆）=f₁（x₁）^{-2.227 3}·f₂（x₂）^{1.186 6}· f₃（x₃）^{-0.001 2}·f₄（x₄）^{1.109 2}·f₅（x₅）^{0.716 1}·f₆（x₆）^{0.157 8}。

关键词: 厌氧氨氧化, 氨氮废水, 多指标评价, 数学模型

Abstract: By orthogonal test,the quantitative evaluation on the influencing factors of UASB anaerobic ammonium oxi-dation process has been implemented,the optimum level of the process explored,the mathematical model of each fa-ctor and ammonia nitrogen removing rate established,and quantitative analysis of the influence law accomplished. The orthogonal test results show that the sequence of the factors is DO > HRT > glucose > pH > NaHCO₃ > temperature. The opti-mum reaction conditions are as follows:DO is 0.1-0.3 mg/L,glucose 50 mg/L,sodium bicarbonate 0.5 g/L,pH 8,te-mperature 26℃,and HRT 9 h. The equation between the removing rate of ammonia nitrogen and various factors is ob-tained by the multi-factor model F(x₁,x₂,x₃,x₄,x₅,x₆)=f₁(x₁)^{-2.227 3}·f₂(x₂)^{1.186 6}· f₃(x₃)^{-0.001 2}·f₄(x₄)^{1.109 2}·f₅(x₅)^{0.716 1}·f₆(x₆)^{0.157 8}.

Key words: anaerobic ammonium oxidation, ammonia-nitrogen wastewater, multi-index evaluation, mathematical model

中图分类号: 

• X703