Water contains many naturally-occurring gases, such as carbon dioxide (CO2), oxygen (O2), nitrogen (N), and hydrogen sulfide (H2S). Industries such as semiconductor, pharmaceutical, power, food, beverage, and medical market, consider these gases undesirable. These gases can cause equipment corrosion, organic growth, and pitting. WPT offers several processes to remove dissolved gases.

Gas Transfer Membranes (GTMs) have a pore size of about 0.03 microns - small enough to prevent water from passing through, but large enough to allow dissolved gases such as CO2 to pass through. Filtered air can be used on the outside of the membrane to sweep the CO2 out of the water. GTMs can also be operated under a vacuum to remove both CO2 and dissolved O2. Unlike forced-draft and vacuum degasifiers, membrane degasifiers utilize a low-pressure drop so that repressurization pumps are unnecessary. This ensures a smaller footprint than forced draft degasifiers and vacuum degasifiers require. Click to learn more

The WPT degasifier tower exposes as much surface area of the water as possible to the stripping gas, to allow gas diffusion from the water. The water flows over many plastic packing devices within the tower to increase the water-surface area. A high-volume blower forces air through the water as it flows down through the tower, lowering the partial gas pressure and removing trapped gases from the water.

The WPT vacuum degasifier is a proven way to remove unwanted gases from water. Feed water flows from tall columns filled with packing or trays. While the water flows over the columns, the resulting vacuum allows the gases to diffuse out. The result is high-quality degasified water.

In critical situations, a neutral sweep gas (argon or nitrogen) is injected into the system opposite of the vacuum to aid in the removal of unwanted gases. The sweep gas moves and dilutes the removed gas that is in the vacuum stream.

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