通过富集培养的方法,从养殖水体和淤泥中筛选出4株优良的水质净化菌。各菌株经鉴定分别为假单胞菌属(Pseudomonas)、凝结芽孢杆菌(Bacillus coagulans)、黄色节杆菌(Arthrobacter flavescens)、坚强芽孢杆菌(Bacillus firmus)。它们对模拟养殖水体中高达5mg/L的氨态氮和亚硝态氮的降解率均能达到80%和90%以上,其中假单胞菌属还具有反硝化作用。 By means of enrichment culture, four excellent water purification bacteria were screened from aquaculture water and sludge. Each strain was identified as Pseudomonas, Bacillus coagulans, Arthrobacter flavescens, Bacillus firmus. Their degradation rates of ammonia nitrogen and nitrite nitrogen up to 5mg / L in simulated farming water can reach above 80% and 90%, respectively, and Pseudomonas also has denitrification.