Journal of Tianjin Agricultural University ›› 2014, Vol. 21 ›› Issue (1): 5-8.

• Researches and Scientific Notes • Previous Articles     Next Articles

Effects of Nitrifying Bacteria and Bacillus subtilis on Controlling Aquaculture Water Qualities

GAO Jin-wei, ZHANG Hai-hong, CHEN Rui-nan, ZHOU Wen-liCorresponding Author   

  1. Key Laboratory of Aqua-ecology and Aquaculture of Tianjin, College of Fisheries, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2013-11-08 Published:2019-10-21

Abstract: The controlling effects on aquaculture water qualities were studied by the experimental materials of nitrifying bacteria and Bacillus subtilis. The results show that water qualities of the experimental groups were better than the blank(P<0.05). In nitrifying bacteria group, the removal rate of ammonia and nitrite reached 75.41%, 92.22%, respectively, but COD had no significant change. Bacillus subtilis could remove COD effectively, with the removal rate up to 77.82%, 87.60%, respectively. The united group got the best effect, with the removal rate up to 82.16% and 94.62%, respectively.

Key words: nitrifying bacteria, Bacillus subtilis, water quality, microbial ecological agent

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