ZSB Rotating Brush Aerator | surface aerator | oxidation ditch aeration

Working Principle The motor turns the horizontal brush shaft through a gearbox, with the blades rotating below the waterline. As the brush spins, the blades keep lifting and throwing water up into the air to form spray, and air gets pulled into the water in the process for surface oxygenation. At the same time, the spinning brush creates horizontal thrust that drives the water to circulate along the channel, combining oxidation ditch aeration and flow in a single operation. Application Fields 1.Municipal wastewater plants: surface aeration and mixing in the aerobic section, working with activated sludge systems. 2.Industrial wastewater: biological aeration of organic effluent. 3.Small and mid-size plants: aeration upgrades for existing biological systems. 4.Long flow channels: oxygenation and water circulation in ditch-style basins. FAQ Q1: Where is the ZSB rotating brush aerator mainly used? A: Mainly in oxidation ditch processes for surface oxygenation and water circulation in the aerobic section, and it also works in activated sludge aeration tanks — a common mechanical aeration choice for smaller treatment plants. Q2: How does a brush aerator differ from a disc aerator? A: A brush aerator is surface aeration — it throws water into the air to pull in oxygen and pushes the water along, which fits long flow channels. A disc aerator is sub-surface fine-bubble aeration, using compressed air through membranes for higher oxygen transfer efficiency, better suited to tank-style aerobic basins. Q3: What are the main components of the brush aerator? A: The brush assembly (blades), the horizontal shaft, bearing supports, a gearbox, and the motor and drive. Immersion depth of the blades sets the oxygenation capacity, and motor power and speed are matched to the process oxygen demand.