Deoxidizer is a chemical substance used in water treatment to remove dissolved oxygen from water. Its main principle is to reduce the oxygen content in water by reacting with oxygen. The following is the principle of deoxidizers:
Reduction reaction: Deoxidizers are usually a type of reducing agent, such as sulfites (such as sodium sulfite). These reducing agents can react with oxygen and reduce it to harmless substances such as water and sulfur dioxide. The reduction reaction can be represented by a chemical equation:
O2+2e -+2H2O ->4OH-
In this reaction, the deoxidizer provides electrons (e -), reducing oxygen to hydroxide ions (OH -), thereby consuming the dissolved oxygen in the water.
Catalyst function: Deoxidizers usually contain a certain amount of catalyst to accelerate the reduction reaction. Catalysts can provide active sites that facilitate effective reactions between reducing agents and oxygen, thereby increasing the reaction rate.
Reaction conditions: The effectiveness of the deoxidizer is influenced by the environmental conditions in the water treatment system. Factors such as pH value, temperature, and stirring can all affect the reaction rate and effectiveness of deoxidizers.
In short, deoxidizers reduce dissolved oxygen in water to harmless substances through a reduction reaction, thereby achieving the purpose of removing dissolved oxygen in water. This is important in many industrial and environmental applications, such as boiler water supply, water supply treatment, and wastewater treatment.