CAJ | 학술논문

为了解析DO浓度对附积床反应器脱氮系统中COD、NH4+-N、TN去除效率的影响,以及对氨氧化菌群(AOB)结构及多样性的影响,分析了DO分别为1.0~2.0,2.0~3.0,3.0~4.0mg/L时COD、NH4+-N、TN去除效率,并采用针对AOB功能基因氨单加氧酶(amoA)的限制性内切酶片段长度多态性技术(RFLP)分析了三组DO浓度下反应器中AOB的群落结构及多样性.结果表明,不同DO条件下,系统均取得较高的COD和NH4+-N的去除效果, NH4+-N的去除效率随着DO的增加而提高.不同DO浓度下反应器生物膜上AOB菌群多样性丰富,且与DO对AOB菌群的多样性影响较小相比,DO对AOB的菌群结构及种类的影响较大.
위료해석DO농도대부적상반응기탈담계통중COD、NH4+-N、TN거제효솔적영향,이급대안양화균군(AOB)결구급다양성적영향,분석료DO분별위1.0~2.0,2.0~3.0,3.0~4.0mg/L시COD、NH4+-N、TN거제효솔,병채용침대AOB공능기인안단가양매(amoA)적한제성내절매편단장도다태성기술(RFLP)분석료삼조DO농도하반응기중AOB적군락결구급다양성.결과표명,불동DO조건하,계통균취득교고적COD화NH4+-N적거제효과, NH4+-N적거제효솔수착DO적증가이제고.불동DO농도하반응기생물막상AOB균군다양성봉부,차여DO대AOB균군적다양성영향교소상비,DO대AOB적균군결구급충류적영향교대.
To investigate the influence of DO concentration on the characteristics of catching bed reactor, the removal efficiency of COD, NH4+-N and TN were analyzed under the DO concentrations at 1.0~2.0mg/L, 2.0~3.0mg/L and 3.0~4.0mg/L, respectively. Meanwhile, ammonia-oxidizing bacteria (AOB) community and diversity in each reactor were examined using restricted fragment length polymorphism (RFLP), and sequencing of amoA genes. The results showed that higher COD and NH4+-N removal efficiency were received under different DO concentrations, NH4+-N removal efficiency increased with the DO concentration increase. The diversity of AOB was abundant in different DO concentrations, but the communities and species of AOB were effect greatly by DO concentration.