Bacillus subtilis and application thereof in water quality purification

The invention relates to the technical field of functional microorganism screening and application, and particularly provides a strain of novel bacillus subtilis, and provides an application of the novel bacillus subtilis in water quality purification. The bacillus subtilis is screened from Guangdong Jiangmen prawn aquaculture pond wastewater, and the preservation number of the bacillus subtilis is CCCTCC NO: M2020356. The strain can efficiently remove ammoniacal nitrogen and nitrite nitrogen in a culture water body, realizes water purification, is high in safety, and can be widely applied to the field of fresh water and mariculture. 本发明涉及功能微生物筛选与应用技术领域，具体提供了一株新的枯草芽孢杆菌（Bacillus subtilis），并提供了其在水质净化中的应用。所述枯草芽孢杆菌筛选自广东江门对虾养殖池塘废水中，其保藏编号为CCCTCC NO：M2020356。该菌株能高效去除养殖水体中的氨态氮和亚硝态氮，实现水质净化，且其安全性高，可广泛应用于淡水和海水养殖领域。