CAJ | 학술논문

在常温22~26℃下,接种成熟的全程自养脱氮(CANON)污泥至2个相同的SBR反应器,通过设置不同的初期DO及不同的DO梯度,考察了DO控制策略及DO值对CANON工艺脱氮性能,稳定性及污泥形态的影响.结果表明,初期DO为0.05~0.10mg/L的反应器可以稳定运行,氨氮和总氮的平均去除率分别为99%和85.4%,而初期DO为(0.40±0.5)mg/L的反应器的氨氮和总氮平均去除率分别为99%和0；在反应器运行稳定之后,逐渐增加DO浓度, DO为0,0.2,0.4,0.5mg/L时的厌氧氨氧化反应速率分别为35.95,23.89,31.50,19.25mgN/(L·h),延时曝气2h后反应器仍可正常运行.在一定DO范围内,CANON反应器的活性随着DO的升高而升高,较高DO对接种初期的CANON反应器冲击较大且不可逆,对稳定运行的CANON反应器的影响较小；但是当CANON工艺稳定运行之后,短时高DO对CANON工艺的影响是可逆的.显微镜照片显示稳定运行的CANON反应器内出现了颗粒化的趋势.
재상온22~26℃하,접충성숙적전정자양탈담(CANON)오니지2개상동적SBR반응기,통과설치불동적초기DO급불동적DO제도,고찰료DO공제책략급DO치대CANON공예탈담성능,은정성급오니형태적영향.결과표명,초기DO위0.05~0.10mg/L적반응기가이은정운행,안담화총담적평균거제솔분별위99%화85.4%,이초기DO위(0.40±0.5)mg/L적반응기적안담화총담평균거제솔분별위99%화0；재반응기운행은정지후,축점증가DO농도, DO위0,0.2,0.4,0.5mg/L시적염양안양화반응속솔분별위35.95,23.89,31.50,19.25mgN/(L·h),연시폭기2h후반응기잉가정상운행.재일정DO범위내,CANON반응기적활성수착DO적승고이승고,교고DO대접충초기적CANON반응기충격교대차불가역,대은정운행적CANON반응기적영향교소；단시당CANON공예은정운행지후,단시고DO대CANON공예적영향시가역적.현미경조편현시은정운행적CANON반응기내출현료과립화적추세.
The sludge that deriving from a stable CANON biofilter was seeded to two same SBR reactors at room temperature (22~26℃), in which the influence of DO on the nitrogen removal, stability and sludge morphology of CANON process were studied by setting different initial DO and DO gradient. The results showed that the reactor with the initial DO of 0.05~0.1mg/L could run stably with the ammonia and TN removal efficiency of 99% and 85.4%, respectively, while the reactor with initial DO of (0.40±0.5)mg/L showed rather lower removal efficiencies of 99%and 0, respectively. DO concentration was increased gradually from 0to 0.2, 0.4, 0.5mg/L, correspondingly, the anaerobic ammonia removal rate reached to 35.95, 23.89, 31.50, 19.25mgN/(L·h), respectively. Moreover, the reactor could still run normally after two hours’ extended aeration The activity of the CANON reactor went up with the increase of DO within a certain DO range, and the higher DO presented a large and irreversible impact on the early vaccinating CANON reactor while showed little and reversible influence on the stable CANON reactor. Micrographs indicated the tendency of sludge granulation in the stable CANON reactor.