容积负荷对同步脱氮除磷工艺处理效果的影响  

Effect of Volume Loading on Efficiency of Simultaneous Nitrogen and Phosphorus Removal Process for Treatment of Low Carbon Source Sewage

作　　者：李琪[1] 吉芳英[1] 金展[1] 郭倩[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2014年第7期1-4,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07318-003)

摘　　要：采用SBR工艺结合污泥外循环侧流除磷的方法处理低碳源城市污水(COD/TN值<5,COD<200 mg/L),考察了容积负荷对其处理效果的影响。结果表明,容积负荷对COD、TP去除效果的影响不明显,但对去除TN的影响较大。当容积负荷为0.19、0.30 kgCOD/(m3·d)时,出水TN浓度能稳定达到一级A标准;当将容积负荷提高到0.40 kgCOD/(m3·d)时,反应器脱氮效果变差,出水TN浓度不能达标。综合考虑,当容积负荷为0.30 kgCOD/(m3·d)时,系统的处理效果较好,对COD、TN、TP的去除率分别为85.3%、67.9%和98.3%。The SBR process combined with external sludge recycle for side-stream phosphorus re- moval was used in the treatment of urban sewage with low carbon source （ COD/TN 〈 5 and COD 〈 200 mg/L）. The effect of volume loading on treatment efficiency was investigated. The results showed that volume loading had no significant effect on the removal of COD and TP, but it had a great effect on TN removal. The effluent TN concentration reached the first level A criteria when the volume loading was 0.19 kgCOD/（m3 .d） or 0.30 kgCOD/（m3 . d）. Meanwhile, the TN concentration failed to meet the requirement and the reactor＇ s nitrogen removal effect was poor when the volume loading was increased to 0.40 kgCOD/（m3 . d）. In conclusion, the system had better treatment efficiency when the volume load- ing was 0.30 kgCOD/（m3 .d）, and the removal rates of COD, TN and TP were 85.3%, 67.9% and 98.3%, respectively.

关 键 词：容积负荷 低碳源污水 脱氮除磷 

分 类 号：X703[环境科学与工程—环境工程]