Gassfjerning

Gassfjerning, also known as gas removal or gas stripping, is a process used to remove dissolved gases from liquids. This technique is commonly employed in various industries, including water treatment, chemical processing, and environmental engineering. The primary objective of gassfjerning is to enhance the quality of liquids by reducing the concentration of unwanted gases, which can be corrosive, odorous, or otherwise detrimental to the final product or the equipment used in subsequent processes.

The process typically involves the introduction of a gas, often air or steam, into the liquid. This gas is then bubbled through the liquid, creating a countercurrent flow where the dissolved gases are transferred from the liquid phase to the gas phase. The gas, now carrying the removed gases, is subsequently separated from the liquid and can be treated or disposed of accordingly.

Gassfjerning is particularly effective for removing gases such as carbon dioxide, oxygen, hydrogen sulfide, and volatile organic compounds. The efficiency of the process can be influenced by several factors, including the type of gas being removed, the temperature and pressure of the system, and the design of the gassfjerning equipment.

In water treatment, gassfjerning is used to remove dissolved gases like carbon dioxide and hydrogen sulfide, which can cause corrosion and affect the taste and odor of the water. In chemical processing, it is employed to purify solvents and other liquids by removing impurities in the form of dissolved gases. In environmental engineering, gassfjerning is used to treat wastewater by removing odorous gases before discharge into the environment.

The choice of gassfjerning method depends on the specific requirements of the application, including the type of gas to be removed, the volume of liquid to be treated, and the desired level of gas removal. Common gassfjerning methods include packed columns, spray towers, and venturi scrubbers, each with its own advantages and limitations.