Wafer static mixers are designed to sandwich between pipe flanges. The simple, short lay length design can provide a mixing solution when there is not room or budget to install a more sophisticated static mixer.
When to use a Wafer Static Mixer
Wafer static mixers are a good choice for applications that require the mixing of aqueous or near water-like chemicals. They are best used for water treatment applications including:
- Chlorination
- Coagulation
- Ammonia addition
- Methanol addition
- Hydrogen peroxide
- Antiscalants
- Corrosion inhibitors
- Diluted polymers
- Dilute acids
- Caustics
- Iron solutions
When not to use a wafer static mixer
Wafer mixers will generally not supply enough mixing energy for viscous chemicals such as:
- Concentrated sulfuric acid
- Neat (undiluted) polymer solutions
The key to a successful wafer mixer solution:
- Ensure the size of the mixer is high enough to create fluid velocities in the pipeline in the range of 1.5 to 10 ft/sec. This velocity is converted to mixing energy that be used to mix your chemical solution.
- Make sure that the minimum/maximum flow rates under all conditions do not vary over about a 4:1 ratio. If your peak maximum velocity is about 9 ft/sec, the minimum velocity cannot be lower than about 2.3 ft/sec.
