MOOMVMIM I VJEI Passavant MAMMOTH ROTOR® Passavant Products & Services ems □ BlLFINGER Bercer Umwelttechnik

Products & Services Design and development of the MAMMOTH ROTOR® The MAMMOTH ROTOR® was introduced to biological wastewater treatment in 1963. Its predecessors were aeration rotors with only a small diameter. The MAMMOTH ROTOR® then having a diameter of 1m and an overall length of up to 9m enabled the application range of such surface aerators to be extended to larger aeration tanks. Over 3500 plants with approx. 52 km of installed rotors are now in operation world-wide. Process The MAMMOTH ROTOR® provides for the oxygen enrichment as well as an ideal mixing of the activated sludge to enable...

Measuring and control technology The application area of the MAMMOTH ROTOR® ranges from simple to extremely complex measuring and control technologies. For simple controls the control factor i.e. the intensity of aeration normally depends on the most important flow parameter, e.g. on the ammoniͭum content. When exceedingthe rated value (not enough oxygen for the nitrification) individual MAMMOTH ROTORS® are switched on and when falling below this value they are switched off. In return, depen-ding on the circulating output achieved by the MAMͭMOTH ROTORS®, the agitators are also switched on/off....

Circulating tank for simultaneous opration The most commonly used is a longitudinal tank with a center longitudinal partition for the two flow channels and baffles at the front end. These fixtures are only for fluidic reasons and therefore have a simple structure. The area of flow is always rectangular and without haunches at the level base. With this configuration the tank is thoroughly mixed, where always a multiple of the inflow of wastewater is circulated. This ensures that there is a fast buffering of impact loads which in so doing increases the process stability. Other tank designs Along...

Functional description When using a MAMMOTH ROTOR® the oxygen is enriched by means of a continuous and intensive renewal of the boundary layer between air and the wastewateractivated sludge mixture in the immediate operating range of the aeration rotor. At the same time fluid energy is yielded. This provides for a circulation which enables activated sludge, wastewater and oxygen to be mixed accordingly and in less deep tanks ensures a sediment-free operation. In deeper tanks the mixing process is boosted by additional agitators which beyond the continuous operation also enable an intermittent...

Advantages > The MAMMOTH ROTOR® is exceptional due to its long service life and sturdy operation with only minor maintenance required. Longtime experience has proven this. > The MAMMOTH ROTOR® is simple to maintain as it is mounted above water level and a tank drainage is therefore not required. > You have a wide application range in terms of control strategies as well as cleaning purposes. > The MAMMOTH ROTOR® can be used in combination with agitators for water depths of up to 8 m. > The MAMMOTH ROTOR® provides the possibility of simultaneous aerobe sludge stabilization > There is only a minor...