COD对强化生物除磷系统的影响及OUR的变化规律  

Effect of COD on enhanced biological phosphorus removal system and variation of OUR

作　　者：张婧倩[1] 彭永臻[1] 唐旭光[1] 王淑莹[1] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《环境工程学报》2011年第2期301-305,共5页Chinese Journal of Environmental Engineering

基　　金："十一五"国家科技支撑计划重点项目(2006BAC19B03);北京市教委科技创新平台项目(PXM2008_014204_050843);北京高校人才强教计划高层次人才资助项目(PHR20090502)

摘　　要：以实际生活污水为研究对象,在SBR系统中采用厌氧/好氧运行方式,考察强化生物除磷(EBPR)系统中好氧阶段COD浓度对聚磷菌除磷性能的影响以及不同好氧阶段COD浓度下的OUR变化规律。实验分4个阶段进行,分别为不投加外碳源、厌氧结束时投加不同体积的乙酸钠作为外碳源,使COD分别提高50、100和300 mg/L。4种工况下好氧前30 min内的COD还在降解过程中,吸磷速率分别为124.72、73.36、43.60和24.8 mg/(g MLSS.h);投加COD≥100 mg/L时聚磷菌在COD降解结束后的吸磷速率有明显增加;吸磷所需时间逐渐延长。OUR在上述4种工况下均可作为吸磷终点的指示参数。In order to investigate the effect of COD on enhanced biological phosphorus removal（EBPR） system and variation of OUR,a SBR process was used for treating real domestic wastewater.The process run as anaerobic/aerobic style.The experiment was carried out in four stages with different added COD（0,50,100 and 300 mg/L） at the end of anaerobic phase.In each stage,COD was still on degradation during the first 30 min of aerobic phase and phosphorus uptake rate of each stage was 124.72,73.36,43.60 and 24.8 mg/（g MLSS·h）,respectively.When the added COD was higher than 100 mg/L,phosphorus uptake rate increased obviously after all the COD was removed;and the time when phosphorus was all absorbed of each stage was extended.OUR could be used as a control parameter of phosphorus uptake in all the stages.

关 键 词：强化生物除磷系统 好氧阶段COD OUR变化规律 

分 类 号：X703[环境科学与工程—环境工程]