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How It Works Series:

Aeration Systems for Water Treatment

Air Gap Faucets

Backwashing Filters

Bypass Valves

Countertop Water Filters

Demand or Delivery Pumps

In/Out Filters

Peristaltic Injection Pumps

Permeate Pumps

Reverse Osmosis Booster Pumps

Reverse Osmosis Shutoff Valves

Reverse Osmosis Storage Tank

RO Membrane Flush

Sediment Filters

Siphon Filters

Spin Down Filters

Static Mixer

Undersink Filters

Ultraviolet Water Treatment

Undersink Reverse Osmosis

Water Softener Controls (metered)

Water Softeners

Whole House Reverse Osmosis



How Static Mixers Work

Static Mixer

A "static mixer," often called an inline mixer, is a device used frequently in water treatment to create an injection point for chemicals like chlorine and soda ash into a water line. Its purpose is to create turbulence that enhances the rapid mixing of the injected chemical into the water stream. Use of the static mixer can reduce the necessary size of storage tanks following the injection point.

The picture above is a cutaway made to expose the inner workings of the mixer. It's a simple device. The service flow of the water is from left to right in the picture. The chemical is injected through the threaded pipe extension on the left of the mixer body. As water passes through the mixer, it is churned by the metal baffles seen in the picture and the chemical is mixed with the water.

The advantages of using the mixer include reduced residence time requirement and improved performance of the injected chemicals. Disadvantages can be reduced water flow due to restriction and clogging caused by mineral buildup within the device.

Static mixers are also frequently called inline mixers.

Mixer Detail

Inside the Static Mixer

For more information on feed pump systems and injection devices.