Aeration Spray Nozzles

Industries may produce volatile organic compounds (VOCs) and/or Trihalomethanes (THMs) as byproducts during daily operations. These byproducts may enter water sources used for processes that can damage equipment and products as well as harm workers. Here at Lechler, we offer spray nozzles for aeration/air stripping applications to improve the productivity of the process and protect workers and equipment from harmful VOCs and THMs. Our patented technologies and products can help a range of companies such as agriculture, water treatment, and other general industries. Learn more about the benefits, common uses, and other important factors regarding aeration nozzles.

Benefits of Wastewater Aeration Nozzles

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.

If you have an air stripping tower, you want to ensure that enough air can come in direct contact with all sides of the air droplet. You also want to ensure that the nozzle can create the smallest droplets possible for successful byproduct diffusion. Hollow cone nozzles are ideal for this application by providing better interaction between the water and the forced air column.

Here at Lechler, we offer an extensive range of both hollow cone and full cone nozzles. Our specialty-designed nozzles can be engineered to work with your specific type of aeration or air-stripping system. Contact us today to learn more.

Highlighted Products

Hollow Cone Nozzles

A hollow cone spray nozzle produces the smallest droplet size of any purely hydraulic nozzle. The spiral grooves in the swirl inserts of these nozzles ensure an efficient whirling of the liquid which creates uniform droplets throughout. Tangential hollow cone nozzles contain no inserts and the liquid flows at a right angle, which then creates a whirling rotation inside the nozzle chamber. These nozzles are less prone to clogging.

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Full Cone Nozzles

Full cone nozzles spray completely within the interior of a circular area.  There are two different styles of full cone nozzles:  Axial and Tangential. Axial full cone nozzles achieve a uniform distribution of liquid over a circular area. Tangential full cone nozzles have no internal vanes so they are less prone to clogging.

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