SBR工艺硝化脱氮过程研究

Study on the Nitrification Process of SBR

SBR法脱氮,硝化过程中碳氮比和温度对氨态、硝态、亚硝态氮的平衡和转化关系极其重要。人工配制固定浓度碳源、不同浓度水平氨氮废水的SBR工艺硝化实验表明:氨氮降解明显地分为两个阶段;进水氨氮浓度越高,氨氮自养硝化阶段降解速率越快,亚硝酸盐氮生成速率也越快。对不同温度硝化过程中亚硝酸盐氮进行研究,结果表明,在中温(20～30℃)下,通过调整pH值,亚硝酸盐氮不仅可以实现累积,而且温度越高,亚硝酸盐氮累积速率越快。

In the investigation of nitrogen removal in a sequencing batch reactor（SBR）, influence of C/N ratio and temperature on the balance and transformation of ammonia nitrogen,nitrate nitrogen and nitrite nitrogen in nitrification is very important. SBR nitrification experiment of invariable carbon concentration along with different ammonia nitrogen concentration shows： the ammonia nitrogen degradation obviously can be divided into two stages, and the higher the influent ammonia nitrogen concentration is, ammonia nitrogen degrades sooner. At the same time, the nitrite nitrogen is accumulated the more of. Still accumulate research on the nitrite nitrogen, the result shows, under the middle temperature （20-30℃）, through adjusting pH value, the nitrite nitrogen not only can be realized accumulating, but also the higher temperature is, it creates faster.