CAJ | 학술논문

通过间歇曝气的运行方式,对高浓度氨氮低碳废水进行短程硝化-反硝化脱氮过程的研究.在生物驯化过程中考察亚硝酸盐氮的积累,并验证短程硝化即亚硝化的可行性.实验结果表明,短程硝化-反硝化过程满足高氨氮低碳废水的生物脱氮要求,亚硝化率达到98.0%以上.采用16S rRNA基因克隆文库分子生物学分析方法对系统中的硝化菌群进行分析,发现系统中主要存在将氨氧化成亚硝酸根的氨氧化菌(AOB)及亚硝酸盐还原菌.
통과간헐폭기적운행방식,대고농도안담저탄폐수진행단정초화-반초화탈담과정적연구.재생물순화과정중고찰아초산염담적적루,병험증단정초화즉아초화적가행성.실험결과표명,단정초화-반초화과정만족고안담저탄폐수적생물탈담요구,아초화솔체도98.0%이상.채용16S rRNA기인극륭문고분자생물학분석방법대계통중적초화균군진행분석,발현계통중주요존재장안양화성아초산근적안양화균(AOB)급아초산염환원균.
The biodenitrification treatment of wastewater with high-concentration ammonia nitrogen and low-concentration carbon was investigated in shortcut nitrification-denitrification process with intermittent aeration mode. The accumulation of nitrite was studied in the process of microorganism acclimation, and the feasibility of shortcut nitrification, namely nitrosation, was validated. The experimental results show that the shortcut nitrification-denitrification process with over 98.0% of nitrosation rate can meet the requirement for biodenitrification of wastewater with high-concentration ammonia nitrogen and low-concentration carbon. The nitrobacteria in this system were analyzed by molecular biology method using 16S rRNA cloning library, and it was found that most of the bacteria in this system are ammonia-oxidizing bacteria (AOB) and nitrite-reducing bacteria.