The disinfection consists of eliminating or unactivating the pathogenic microorganisms (that can cause theirs theirs diseases) provided that the water is one of the principal means for the one that is transmitted. These can be bacteria, fungi, protozoos and virus. In case of industrial waste water, the aim can be not deactivate only pathogenic, but any other alive organism, if what is claimed is to re-use the water. The principal processes of disinfection are the ozonization and the chloration.
CHLORATION
The chlorine (Cl2) is one of the desinfectant more used in the treatment of waste water because it destroys the organisms on having been unactivated by means of the oxidation of the cellular material. The chlorine can be given in many forms that include the gas of chlorine, the solutions of hypochlorite and other compounds chlorinates in solid or liquid form.
There is a series of factors that influence the process: nature and concentration of organisms to destroying, solved substances or in suspension in the water as well as the concentration of chlorine and the time of used contact.
The bactericidal action of the ozone owes to itself that one transforms into molecular oxygen into an atom of oxygen. The atomic oxygen is the most energetic oxidizer that is known. It acts on the protoplasm of the bacteria and destroys them.
