The denitrification feature of aerobic granular sludge in a continuous airlift aerobic granular sludge fluidized bed
In municipal wastewater treatment for object,by the sludge floe for sludge seeding.,continuous airlift aerobic granular sludge bed (CAFB) reactor cultivate aerobic particle sludge,and discuss CAFB granular sludge formation process,biological diversity,the removal of organic matter and nitrogen transformation characteristics of behavior.Reactor run to seventh days of granular sludge is dominant,followed by the Protozoan,Metazoa.The results show that the aerobic granular sludge cultivated in the CAFB reactor has good COD and ammonia nitrogen removal capacity.In stable operation of the phase,when the influent COD volumetric loading (OLRv) in the range of 1.5 ~ 3.5 kg COD/(m3·d),COD removal load maintained at 1.0 ~~ 2.0 kg COD/(m3·d).In the reaction process by controlling the hydraulic retention time was 4 ±0.25 h,and dissolved oxygen concentration was 5±0.5 mg/L which make nitrifying bacteria become dominant microflora.Now the nitrification denitrification efficiency is highest,but denitrification is not obvious,which is supposed to result by hypoxia in CAFB
CAFB continuous aerobic granular sludge nitrification
Gao Linlin Zhou Dandan Wang Jun Zhang Jianbin Chen Jing Cui Ning
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun,130026, China
国际会议
上海
英文
102-102
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）