摘要
在A2/O工艺中,通过调节混合液回流比,实现了反硝化除磷菌的富集。COD和氨氮的平均去除率分别为85%和95.6%,达到稳定除磷效果时,磷酸盐的平均去除率为82.9%。缺氧段吸磷量所占比例从27.4%增至65.7%,反应后期平均比值为62.6%。污泥特性实验表明最大缺氧吸磷速率为5.79 mgP/(gMLSS.h),最大好氧吸磷速率为9.29 mgP/(gMLSS.h),两者的比值为62.3%。
The denitrifying phosphorus removal performance of A2/O system was enhanced by adjusting the ratios of return mixed liquor. The average removal rates of COD and NH4＋ - N were 85% and 95.6%, respectively, The average removal rate of PO4 3- - p was 821 9% when the system was steady - state. The ratio of anoxic phosphorous uptake was increased from 27. 4% to 65. 7%. The average ratio achieved 62. 6%. Results of sludge characteristic experiments showed that the anoxic and aerobic specific phosphorus uptake rates were 5. 79 mgP/（ gMLSS . h） and 9, 29 mgP/（ gMLSS . h） respectively. The ratio was 62.3%. Thereby, the ratio of DPBs that could uptake phosphorous under anoxic condition and PAOs was 62.3%.
出处
《广州化工》
CAS
2013年第10期83-85,共3页
GuangZhou Chemical Industry
基金
重庆工业职业技术学院校内课题(GZY201211-YK)
关键词
A2
O工艺
生物除磷
反硝化除磷
A2/O
biological phosphorus removal
denitrifying phosphorus removal
