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Uses. Oxygen is of great importance in the chemical and the iron and steel industries. Its major use is in steel production, for example in the Bessemer process. The oxyacetylene torch is another important industrial application.Oxygen is utilized in medicine in the treatment of respiratory diseases and is mixed with other gases for respiration in submarines, high-flying aircraft, and spacecraft.ts major use is in steel production, for example in the Bessemer process. The oxyacetylene torch is another important industrial application. Oxygen is utilized in medicine in the treatment of respiratory diseases and is mixed with other gases for respiration in submarines, high-flying aircraft, and spacecraft.
General Information about Low Dissolved Oxygen. Oxygen is a byproduct of photosynthesis, the process by which plants make their cell material (from sugars) from water and carbon dioxide in the presence of sunlight. In general, oxygen is used by fish, animals, bacteria, fungi, and plants to break down organic matter and sugars. Animals, bacteria, fungi and fish use oxygen to break down organic material that they get by eating plants or other animals, bacteria, fungi and fish.