本发明涉及一种耐低温硝化菌剂,该低温硝化菌剂涉及汉堡硝化杆菌Nitrobacter hamburgensis AS 1.2729,维氏硝化杆菌Nitrobacterwinogradskyi AS 1.2730,Nitrobactervulgaris AS 1.2775,蜡状芽孢杆菌Bacillus cereus AS 1.230,地衣芽孢杆菌Bacillus licheniformis AS 1.518,和酿酒酵母Saccharomyces cerevisiae AS 2.412共六种菌株,这些菌株经培养后,按其培养物同等体积比例配比组成为耐低温硝化菌剂,在较低温度下具有去除超低浓度氨氮的作用,单独使用或与相应的生物反应器适配