Benefits of Nozzles for Aeration
Aeration is a way to remove contaminants from water with the use of air. When air passes through the contaminated water, it diffuses the unwanted compounds and byproducts. This action helps to strip the VOCs and THMs so that the water can be reused in processes and other applications.
Spray nozzles are designed to push the contaminated water through air columns that are created in packed towers and air stripping towers. By making the water into small droplets in the air, or thin water layers along packing materials, the air can successfully remove more contaminants as it passes through the water. Our nozzles are designed for larger surface areas and uniform spray coverage to make air stripping and aeration processes more efficient.
Common Uses for Aeration Nozzles
Aeration nozzles can be used in several different application systems. Two common systems are called packed towers and air-stripping towers.
Packed towers will have packing materials inside as air is blown up through the packing materials. Spray nozzles are designed to be placed above the packing materials as the nozzles spray the contaminated water onto the packing materials. These materials are thoroughly wetted as gravity forces the water down. While the water moves down and the air moves up, the air diffuses the VOCs and THMs from the water. The water passes through and becomes collected below in a reservoir. In this type of application, nozzles are used to create a uniform spray to thoroughly cover the packing material.
For air stripping towers, the nozzles provide direct contact between the water and the air. An air column is created about a reservoir. Nozzles spray the water directly into the moving air as the air diffuses the byproducts. The water then falls into the reservoir and becomes collected. In this application, spray nozzles need to create small droplets. By having a small size, the water can more easily pass along the droplet to diffuse the VOCs and THMs.
Important Factors to Consider
A key factor to keep in mind when selecting spray nozzles for aeration/air stripping applications is to consider the nozzle's spray pattern. When working with a packed tower, you want a spray nozzle that provides full coverage over the packing material, such as a full cone nozzle. This nozzle will ensure even coverage without leaving dry spots.