厌氧氨氧化颗粒污泥的培养及影响因素

在EGSB反应器中快速启动厌氧氨氧化(ANAMMOX)工艺,总氮去除速率为0.931±0.006 kg/(m~3·d),总氮去除效率为90.5%±0.8%。培养得到厌氧氨氧化颗粒污泥和絮状污泥混合物,污泥平均粒径为307.5μm。高质量浓度的NO_2~-(143.25 mg/L)抑制厌氧氨氧化菌活性;N_2H_4可强化厌氧氨氧化,但高质量浓度的N_2H_4抑制厌氧氨氧化菌活性;短期添加丙酸盐(COD质量浓度0~400 mg/L)对厌氧氨氧化速率几乎无影响;厌氧氨氧化速率随Fe~(3+)浓度(0~1.2 mmol/L)的增加而增加。

The Cultivation and the Effecting Factors of ANAMMOX Granular Sludge

ANAMMOX process is rapidly started -up in EGSB reactor ,and the total nitrogen removal rate and the total ni-trogen removal efficiency can reached 0 .931 ± 0 .006 kg/(m3?d) and 90 .5% ± 0 .8% .Granular biomass and floccular biomass are both found in reactor ,and the mean radius is 307 .5μm .High concentration of NO2-(143 .25 mg/L) inhibites the activity of ANAMMOX bacteria .The addition of N2 H4 can enhance the performance of ANAMMOX ,while the excess of N2 H4 will inhibit the activity .The addition of propionate (COD 0~400 mg/L ) in short term has little effect on the rate of anaerobic ammonium oxidation ,while Fe3+ (0~1 .2 mmol/L ) can accelerate ANAMMOX process .