Introduction to disinfection units

Disinfection units are systems or devices designed to eliminate or inactivate pathogenic microorganisms present in water or other fluids, in order to guarantee their drinkability or safety for specific uses. These units are essential in drinking water and wastewater treatment processes and in the food, pharmaceutical and healthcare industries.

The main purpose of disinfection units is to protect public health by reducing microbiological risk, ensuring that the water or fluid treated meets established sanitary standards. There are various technologies and methods that can make up these units, adapting to the particular needs of each application.

Mechanisms of action of disinfection

Disinfection is based on the destruction or inactivation of microorganisms such as bacteria, viruses, protozoa and fungi using physical or chemical agents. These agents act by altering the cellular structure, damaging the genetic material or interrupting metabolic processes essential for the survival of microorganisms.

Physical methods, such as ultraviolet radiation or filtration, cause direct damage to the DNA or cell membrane, preventing reproduction and vital function. Chemical agents, such as chlorine or chlorine dioxide, oxidize cellular components, causing the death or inactivation of pathogens.

The effectiveness of disinfection depends on factors such as the concentration of the disinfectant agent, contact time, temperature and the physical-chemical conditions of the water, such as pH and turbidity, which can influence the protection of microorganisms or the reaction of the disinfectant.

Importance of disinfection in water treatment

Proper water treatment requires not only the removal of solids and physical and chemical contaminants, but also the elimination of pathogens that can cause disease. Disinfection is the critical final stage that ensures the microbiological safety of water for human consumption.