Bacillus subtilis for Water Treatment
Firstly, Bacillus subtilis can effectively decompose organic matter in water bodies, such as pools, ponds, and tanks, used for aquaculture. It can decompose large organic matter molecules such as feed residues, animal remains, and feces, thereby improving water quality. This decomposition not only reduces harmful substances in the water, but also provides a better growth environment for aquatic organisms. Bacillus subtilis can also form dominant bacterial communities through nutritional and spatial competition, inhibit the growth and reproduction of harmful pathogens such as Vibrio and Escherichia coli, and further purify water quality.
Furthermore, Bacillus subtilis also performs well in regulating water quality. Bacillus subtilis regulates the pH value of water, improves the acid-base balance of water, and provides a more suitable growth environment for aquatic organisms. Moreover, Bacillus subtilis can secrete various enzymes such as chitinase, protease, and lipase, which can decompose organic matter in water and further purify water quality
Finally, attention should also be paid to the application methods of Bacillus subtilis. Before use, its effectiveness can be improved by activating it with a "carbon source". For example, using organic carbon sources such as brown sugar and molasses to awaken dormant Bacillus subtilis ensures its full activation before use. In addition, Bacillus subtilis is often used in combination with other bacterial species such as photosynthetic bacteria and lactic acid bacteria in aquaculture to address different water quality issues.
