基于短程硝化颗粒污泥对高氨氮废水的处理效果研究

Treatment effect of short cut nitrification granular sludge on high ammonia nitrogen wastewater

培养125种不同成分废水的适应性硝化菌群,使用电镜观察法研究其菌群构成和生物学生态学特征,同时在不同反应温度和不同硝化颗粒加入量的条件下分析其反应时间阈值,来研究短程硝化颗粒的制备方案并研究其对高NH3-N废水的处理效果,采用适应性变异促进培养法。结果表明,在3种不同污染条件下,硝酸菌浓度均呈现出指数型增长关系,亚硝酸菌均表现出线性增长关系。随着NH_(3)-N浓度增加,适应性硝化颗粒中,亚硝酸菌占比持续降低,而硝酸菌占比持续升高。亚硝酸菌浓度与NH_(3)-N浓度呈现逆相关,硝酸菌浓度与NH3-N浓度呈现正相关。从而发现,不同的NH_(3)-N废水污染形式对应的适应性硝化颗粒生化成分有较大差异,对不同成分的NH3-N废水需要选择针对性的硝化颗粒进行废水处理,可以有效提升废水处理效率。

In order to study the preparation scheme of short-range nitrification particles and study the treatment effect of high ammonia nitrogen wastewater,cultivate 125 different components,study the flora composition,biological ecology and characteristics,and analyze the reaction time threshold under different reaction temperatures and different nitrification particles.The results show that the concen-tration of nitrate bacteria under three different pollution conditions showed a linear growth relationship.With the increasing concentration of ammonia nitrogen,the proportion of adaptive nitric acid bacteria continues to decrease,while it continuously increases.The concentration of nitrite acid bacteria is inversely related with ammonia nitrogen concentration and shows positive correlation with ammonia nitrogen concentration.Therefore,it is found that different adaptive nitrate particle biochemical components corresponding to different ammonia nitrogen wastewater pollution forms differ greatly,and different component ammonia nitrogen wastewater need to choose targeted nitri-fication particles for wastewater treatment,which can effectively improve the efficiency of wastewater treatment.