化工环保2024，Vol.44Issue(5)：644-651,8.DOI:10.3969/j.issn.1006-1878.2024.05.007
具有吡啶降解功能的好氧颗粒污泥培养及同步脱氮
Cultivation and simultaneous nitrogen removal of aerobic granular sludge capable of pyridine degradation
摘要
Abstract
In a sequencing batch reactor(SBR),the aerobic granular sludge was cultivated by using denitrification granular sludge as the crystal nucleus and adding high efficient degradation bacteria for pyridine into it.The changes of NH4+-N,NO2--N,NO3--N,Pyridine-N,and extracellular polymeric substances(EPS)in the aerobic granules sludge systems under different operating cycles were investigated,and the influence of the alternating operation of high and low dissolved oxygen on the SBR was analyzed.The results show that the aerobic granule sludge has a compact structure,colored in yellow,with an elliptic or spherical shape and a particle size ranging from 1 mm to 3 mm.When the operating cycle was 8 h and the influent pyridine concentration was 3000 mg/L,the effluent pyridine concentration is below the detection limit of the instrument(2 mg/L)and the EPS content reaches its maximum of 95 mg/g(calculated by MLSS).The alternating operation of high and low dissolved oxygen is beneficial to improving nitrogen removal efficiency and reducing power consumption.Under the conditions of an operation cycle of 8 h,the influent ammonia concentration of 250 mg/L and the pyridine concentration of 3000 mg/L,the total nitrogen removal rate is 51.7%,and the nitrogen accumulation rate of NO2--N is 95.5%.关键词
吡啶/好氧颗粒污泥/反硝化颗粒污泥/快速培养/短程硝化-反硝化Key words
pyridine/aerobic granular sludge/denitrification granular sludge/rapid cultivation/partial nitrification and denitrification分类
资源环境引用本文复制引用
吴施婧,邓觅,朱林,吴永明,梁培瑜..具有吡啶降解功能的好氧颗粒污泥培养及同步脱氮[J].化工环保,2024,44(5):644-651,8.基金项目
江西省科技计划项目(20232BCJ22047,20212BCD42014) （20232BCJ22047,20212BCD42014）
江西省科学院省级科技计划项目包干制试点示范项目(2021YSBG-10003,2023YRCS001). （2021YSBG-10003,2023YRCS001）
