Other leachate treatment methods include advanced oxidation processes (AOPs) such as ozonation. Today, the ozonation process is widely used in water and wastewater treatment due to the high potential of ozone for oxidation and conversion of hard biodegradable components to CO2 and biodegradable compounds.
In addition to removing organic and inorganic pollutants, ozone has a very high ability to remove color and odor and, unlike other methods, leaves no residue and sludge. The use of this method also has disadvantages. For example, due to the variable and complex properties of leachate, high levels of ozone input are usually required, as well as the long time it takes for ozone to come into contact with the solution and perform reactions, which makes the process uneconomical and limits the application of this method alone.
Ozone is used in this package for two purposes:
– Use of ozone for advanced oxidation and failure of the main structures producing organic, chemical and microbial charge, color and odor
– Use of ozone in the final disinfection of treated wastewater
Although chlorine is the most common disinfection system in Iran and chlorination appears to kill many microorganisms, protozoa and worm parasite eggs are significantly more resistant to chlorination than bacteria. Chlorine has no effect on more resistant organisms such as coliforms, viruses, parasitic eggs and Giardiambia cysts. Chlorine also causes eye irritation and dry skin in higher doses; In addition, the presence of some other toxic compounds such as trihalomethanes and chloramines causes poisoning and in some cases causes sudden death by causing sudden shock and rapid bleeding of the liver, and if used in agriculture, causes drying of plants. Be.