The dissolved air flotaiton tank, sometime called DAF tank, its a smart tool that help clean water. Picture dirty water with small bits floating around that you want gone. DAF tank use air bublbes to fix that. It put tiny air bubbles in the dirty water, and bubbles stick to those particles. Then, particles with bubbles on them get light and floats up top, where they easy skim off. Like a soft bubbly lift bringing junk to surface for removal, leave water cleaner. This work great in industries, like factory wastewater or safe water use. Dinghui know clean water matter, so we build these reverse osmosis water purifier DAF tanks to make it happen good and fast.