The water and air mixture gets mixed thoroughly in a vane type arrangement and then the air is fractured into micro bubbles in a set of mushroom type bubble breaker device which forcibly dissolve oxygen into water. Circulating flows are formed by powerful upward air flows which evenly churn the entire tank resulting in high agitation and oxygen transfer. Volume of activated sludge sucked into the aerator is about 1.3 times than the air supplied because of strong negative pressure created in the ejector assembly.Air discharge opening is about 30mm and so operated without any clogging issues even in liquid with large particles.
Size of the bubbles can drastically influence the oxygen transfer efficiency in the aeration system.
- Smaller bubbles increase OTR exponentially
- Gasion aerator generates micro bubbles with low rising velocity and high surface area.
Gasion hydrodynamic aerators produce millions of bubbles in micron sizes which have much larger surface area, compared to millimetre bubbles of diffused aerators. The size is so minute that it cannot travel up to the surface in a straight path. The very low buoyancy of the micro bubbles creates zig-zag path of bubbles moving horizontally more than the vertical distance. This increases the residence time of these bubbles in liquid drastically. The figure illustrates and compares the air bubble size and rising phenomenon of millimetre and micron sized bubbles. It could be noted that millimetre sized bubbles travel up and burst outside on the surface. But the Gasion micron sized bubbles burst inside the liquid itself as it takes much longer before it reaches the top. This bubble burst in liquid accounts for very high OTR of the Gasion Aerators.
Multiple precision parts make an efficient aerator assembly
Gasion hydrodynamic aerators are constructed of multiple injected moulded parts assembled together to form an high performance aerator. Each of the part is carefully designed, connected aligned to provide a durable structure which should last many years.Supplied as an unit which can be readily used in the aeration tanks.
Conventional rubber diffusers slowly decreases in OTR as it clogs and need periodical cleaning and downtimes. It needs complete replacement in less than 2 years in most cases. Gasion hydrodynamic aerator OTR remains the same through out its lifetime .
Gasion hydronamic diffusers have an air flow rate capabilities of more than 100 cum/hr per unit against 10 cum /hr of tube diffusers and 5 cum/hr of disc diffusers. One Gasion diffuser can replace 10 tube diffuser or 20 disc diffuser which reduces piping complications for Air grid drastically.
