摘要
本研究的结果表明,臭氧可以用于减少序批式生物反应器(SBR)系统产生的剩余污泥量.该系统由SBR和污泥臭氧化及回流装置组成,其中SBR排出的污泥经与臭氧接触反应再回流到SBR中.结果显示,臭氧化促进了反应器中生物量的减少,并有一定量的生物污泥被无机化.在臭氧投加量接近于0.2gO3/gSS且污泥回流量为0.3L/L·d时,污泥观测产率Yobs可接近零.另外,当臭氧投加量为0.05gO3/gSS且污泥回流量为0.4L/L·d时,也可得到相同结果.实验中SBR的MLSS有效地维持在4000～6000mg/L之间.
The results of this study showed that ozonation could be used to reduce the excessive sludge yielded in a Sequence Batch Reactor (SBR) system. The latter comprised a SBR and a recirculating line that drew biomass from the SBR into an ozonation chamber and then returned it to the SBR. A considerable amount of the ozonated biomass was probably mineralized. The observed sludge yield (Y_(obs)) was nearly zero at an ozone dosage of 0.2g O_(3)/g SS and with a recirculation rate of 0.3L/L.d. Opportunities for optimizing the combination of ozone dosage and recirculation rate was suggested when it was found possible to replicate the Y_(obs) reduction results with 0.05g O_(3)/g SS at 0.4L/L.d. Reactor MLSS could be effectively maintained at 4000～6000mg/L throughout the study.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
2004年第2期239-242,245,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
