HYPERCLASSIC^®-Mixing and Aeration System

Highly efficient supply of oxygen to the microorganisms for BOD and nitrogen elimination.

The HYPERCLASSIC^®-Mixing and Aeration System acts as a permanent aeration system for biological carbon degradation in aeration tanks. It is possible to react flexibly to fluctuations in freight. The simultaneous circulation by the agitator ensures a homogeneous and deposit-free mixing even with low air supply in the activated sludge tank.

The HYPERCLASSIC^®-Mixing and Aeration System ensures not only optimal mixing in the biological stage but also efficient oxygen supply during nitrification. The mechanical aeration method allows for a high oxygen transfer rate with minimal energy consumption and consistently low pressure loss.

In the SBR process, usually several cycles with different process phases are run through each day. Important boundary conditions for a well-functioning overall process include a rapid change between phases with oxygen supply and pure mixing operation, homogeneous mixing and flexible oxygen supply capacity with a wide working range.

In addition to the above boundary conditions, the HYPERCLASSIC^®-Mixing and Aeration System additionally offers further advantages in the SBR process:

• In the case of strong seasonal freight fluctuations (food processing, tourism, etc.), a temporary shutdown is possible without any loss of quality of the components or functionality.
• Simple installation without complex internal structures in the tank – With the liftable version, maintenance can be carried out without emptying the tank.

The influent loads to the biological treatment may exhibit significant fluctuations. In order to avoid having to size the treatment plant for peak loads, equalization tanks are constructed. Aeration prevents the wastewater from putrefying and developing unpleasant odors. The additional mixing capacity effectively prevents deposits in the tank.

The HYPERCLASSIC^®-Mixing and Aeration System combines both tasks in one machine and can be perfectly adjusted to meet the specific requirements.

In nitrification stages, the HYPERCLASSIC^®-Mixing and Aeration System serves as a permanent aerator. If (seasonal) process changes in the activated sludge tank require a temporary changeover from nitrification to denitrification (swing zone), it is possible to run in pure agitation mode without aeration. A change between operation with and without aeration is possible at any time by using the HYPERCLASSIC^®-Mixing and Aeration System.

By utilizing intermittent aeration in conjunction with modern measurement, control, and regulation technology, the energy consumption of a wastewater treatment plant can be significantly reduced, leading to a stable operation with consistently low effluent values.

The HYPERCLASSIC^®-Mixing and Aeration System is perfectly suited for intermittent operation as it can easily switch between aeration and mixing modes while ensuring complete mixing of the tank contents in all operational points. The risk of membrane clogging during switched off aeration is eliminated, making the HYPERCLASSIC^®-Mixing and Aeration System a reliable and efficient choice for wastewater treatment processes.

Activated sludge with high dry matter content forms a viscous, pseudoplastic medium. Due to the shear-thinning effect of the mixer body of the HYPERCLASSIC^®-Mixing and Aeration System in aeration mode, there is a significantly better oxygen supply compared to membrane aerators. In addition, problems such as clogging of membranes, pressure increases and material aging due to high temperatures are no longer a problem by using the HYPERCLASSIC^®-Mixing and Aeration System.

The HYPERCLASSIC^®-Mixing and Aeration System can be utilized as a continuous aerator to convert ammonium in the sludge water into nitrite under aerobic conditions. When needed, it can easily switch to the mixing mode to increase the proportion of anaerobic bacteria in the Anammox process. Since Anammox bacteria are often sensitive to high or low oxygen concentrations, a highly flexible aerator is desirable. The HYPERCLASSIC^®-Mixing and Aeration System provides this flexibility, allowing for optimal adaptation to the specific process requirements.

The aeration or oxygen supply in the process can be carried out by using the HYPERCLASSIC^®-Mixing and Aeration System with atmospheric oxygen or pure oxygen supply. During aeration with pure oxygen, the HYPERCLASSIC^®-Mixing and Aeration System achieves high oxygen transfer efficiencies through the high specific mixing power input, thus minimizing the required pure oxygen and reducing operational costs.

By continuously cleaning the membrane surface and providing uniform aeration, the thickness of the fouling layer is limited. This is crucial for the activity of the biological microorganisms responsible for the degradation of organic substances in the wastewater. Additionally, uniform aeration can prevent deposits on the membrane surface, thereby minimizing maintenance costs. Furthermore, membrane bioreactors often have increased biomass concentrations, which do not lead to increased wear or maintenance requirements for the HYPERCLASSIC^®-Mixing and Aeration System under such conditions.