HyperClassic - Mixing Systems

INDEPENDENT AERATION AND MIXING

With most other aeration types, mixing intensity decreases as aeration decreases. This often gives rise to the need for separate aeration and mixing equipment, or over-aeration to maintain adequate mixing. The HyperClassic Mixer/Aerator overcomes these disadvantages by providing independent mixing and aeration in one integrated unit. This makes it ideal for use in swing zones, low load zones such as at the end of aeration lanes in Sequencing Batch Reactors (SBRs), and where there are high fluctuations of load such as in industrial effluent treatment.

FINE BUBBLE AERATION

During aeration mode, air or gas is introduced under the hyperboloid impeller through a specially designed air sparger system where large bubbles are released. These hit the shaped underside of the hyperboloid mixer-body, which is equipped with shear fins and dispersing tunnels. As the hyperboloid impeller rotates, the air is dispersed into fine bubbles by the shear fins underneath the impeller. The strong flow then transports these fine bubbles radially outwards and distributes them throughout the whole tank.

This optimized form of mechanical aeration creates fine bubbles sizes with a high alpha factor and particularly high retention times, achieving high oxygen transfer efficiencies.

HIGH EFFICIENCY MIXING

In addition to and independently of aeration, the HyperClassic Mixer/Aerator maintains efficient mixing. Mixing energy is introduced in a radial flow pattern on the tank floor where it is needed most, thus preventing undesirable settlement.

ENVIRONMENTAL COMPLIANCE

Bio-aerosols and their associated risks are minimised by the absence of surface spray, eliminating the need for splash covers. HyperClassic Mixer/Aerators are also quieter than many other mechnanical aerators.

NON-CLOGGING

The air sparger system is constructed from HDPE or stainless steel and does not have any fine pores or membranes that are susceptible to silting, clogging, abrasion or tearing. This means that there is absolutely no loss of efficiency as time goes on – a common downside of fine-bubble diffused aeration.

LIVE INSTALLATION

A cage-mounted option is available, allowing installation and maintenance to be performed in ‘live’ tanks with minimal interruption.

FEATURES       

• Hyperboloid mixer body       
• Energy dissipated along the tank floor and    upwards   
• Anti-rag design       
• All drives and bearings above the water line       
• No bottom bearing (except in exceptional circumstances)       
• Self-centering impeller       
• Low rotational speed       
• Internationally proven performance       

BENEFITS   

• By directing the water flow from axial (down the mixer shaft) to   
• radial (along the tank floor), frictional losses are minimized and the   
• highest efficiencies are achieved   
• No sedimentation or dead zones   
• Superiorto all other mixer designs in regard of ragging   
• All maintenance items are easy to access and not prone    to water
• damage   
• No need for draindown during installation or removal   
• Minimises forces and vibration   
• Prevents floe shear   
• Peace of mind