Also known as Air Strippers or Aeration Towers. Degasifier are used in Drinking Water Treatment Facilities to remove odors caused by hydrogen sulfide (H2S). Degasifiers work by stripping dissolved H2S from water and reducing the overall odor of the water.
Vacuum deaerators, also known as vacuum degasifiers, use a vertical pressure vessel, multiple vacuum stages and vacuum pumps to continuously remove objectionable gases from liquids.
Thermal degasification applies steam heat to remove gasses from a water stream via boiling. It is a physical process that consists of removing the dissolved gases by taking advantage of their insolubility at high temperatures.
Membrane degasifiers use a hydrophobic gas permeable membrane to remove dissolved gasses such as oxygen or carbon dioxide from a liquid stream, transferring the gas into a stripping gas or vacuum stream.
Chemical degasification uses the injection of chemicals such as sodium bisulfite, hydrazine, or amines to remove dissolved gases from a liquid stream via a chemical reaction.
Absorption-based degasification uses a counter-current stripping gas stream to absorb a dissolved gas, removing it from the liquid stream and transferring it to the stripping gas stream.
Steam stripping degasification uses high-pressure steam injected at the bottom of a stripping column to remove volatile organic compounds or dissolved gases, such as ammonia, from a liquid stream.