Floating Aerators

Frame & Platform Assembly
The aerator support framework is carefully designed in a three-legged formation where the structural members are manufactured from tubing. This design is simple, structurally sound and free from ragging. The structural members have been selected such that all the stresses are kept well below the safe repeated stress for the particular material used. The design incorporates a repeated stress value in the calculations used to allow for continued buffeting of the unit during operation.

Aerators  

Floats
Each of the three cylindrical floats is positioned at the extremity of each framework leg. Each float is inclined as shown on the attached drawing and incorporates a conical upper section. This arrangement gives streamlining of the flow past the float ensuring good mixing and minimal splash back. By inclining the floats in this manner the float area at the water surface is increased thereby increasing the floating stability of the unit. The float compartment is fully welded and hydraulically tested to 0,5 bar as a pressure vessel to ensure complete water tightness. The cylindrical portion of the float is filled with closed cell polyurethane foam as an extra precaution against sinking. The conical portion is used to allow liquid ballast for the correct aerator immersion. The float area in relation to the radius of the floats from the aerator is off a carefully calculated design to give the maximum stability to the total aerator unit as well as economy of construction.

Anchor Ropes
Polypropylene ropes for anchoring the aerator to the mooring posts are included under our supply as they are UV resistant and tend to generally last longer than the normal nylon or manilla ropes.

Slow Speed Floating Aerator

Floating Aerator Floating Aerator


Vertical Spindle Surface Aerators

Top


Advantages of a Satec Designed High Intensity Turbine Aerator

  1. Streamlined construction resulting in rag trap free operation.
  2. Pumping capability is suitable for low and high-energy applications.
  3. Engineered construction allows for easy and full paint application.
  4. High corrosion protection due to ease of paint application.
  5. Engineered so all components are subject to low stress and deflection.
  6. Very stable wave formation with minimum erratic splashing and airborne mist.
  7. Efficient operation and immersions from maximum to -50% of absorbed power.
  8. True concentric rotation due to the manufacturing jigs used in construction.
  9. The ability to reduce by as much as 80% by simply reversing rotation
1. The Power Input
2. The Oxygenation

Due to Reverse Rotation Ability of these Turbines

  1. O2 required is reduced without creating any 'dead' areas in the reactor basin.
  2. In some cases eliminates having to raise and lower the outlet weir.
  3. Eliminates long time delays in control of oxygen requirements in the reactor.
  4. Time or PLC control of rotation can cope with peak and low flows.
Vertical Aerator Vertical Aerator

Baffles And Draught Tubes

Baffles and draught tubes are not normally necessary when the aerator tip speed exceeds 6,50m/sec and where the energy level is less than 25 watts per m³ (i.e. deep tanks). These are normally constructed in concrete. Baffles are designed to prevent vortexing, liquid rotation below the aerator and limit rotation of the tank contents.



Top
Interesting Facts

"Raindrops are not tear-shaped. Scientists, using high-speed cameras, have discovered that raindrops resemble the shape of a small hamburger bun."

"The average human body is composed of about 55% water"

"Life on earth probably originated in water"

"More than half of the world's animal and plant species live in the water"

"Almost 70% of the earth is covered in water"

"The human body needs 2 litres of water a day in our climate; we can last only a few days without water"

"Most of our food is water: tomatoes (95%), spinach (91%), milk (90%), apples (85%), potatoes (80%), beef (61%), hot dogs (56%). "