煤制烯烃废水硝化菌属培养驯化的研究

Research on Cultivating and Domesticating Nitrifying Bacteria Genus of Coal to OlefinWastewater

摘要: 本实验采用煤制烯烃生产时排放的废水进行硝化菌属培养驯化的研究，结果表明：控制温度为26℃~30℃，DO为2~4mg/L，C/N比为8:1，pH在7.5~8.5范围内时，通过逐步提高氨氮容积负荷的培养方式，能够得到富集硝化菌属的活性污泥。实验最佳氨氮容积负荷为110g·m⁻³·d⁻¹，硝化速率最高达到1.4 × 10⁻³ mg ()/(mg MLSS·h)，氨氮去除率最高达到91.2%。

Abstract: In this study, coal to olefins wastewater is adopted to cultivate and domesticate the nitrifying bac- teria genus. Research shows that: When the temperature is 26℃ - 30℃, DO is 2 – 4 mg/L, C/N is 8:1, pH is in the range of 7.5 - 8.5, by the training mode of gradually increasing ammonia nitrogen volumetric loading, it can obtain active sludge with enriched nitrifying bacteria genus. The best ammonia nitrogen volumetric loading in the study is 110 g·m⁻³·d⁻¹, nitrifying rate can reach up to 1.4 × 10⁻³ mg ()/(mg MLSS·h), and the removal rate of ammonia nitrogen reaches 91.2%.