Ozone disinfection of drinking water

The general water treatment method uses coagulation, sedimentation, filtration and other processes. These processes can clean the water source, but the water source also contains organic matter and microorganisms. At present, water treatment and disinfection methods include chlorine gas, bleaching powder, sodium hypochlorite, chloramine, ultraviolet light, and ozone. Each disinfection mode has different characteristics.

Chlorine disinfection is good, but it produces carcinogens. Bleaching powder andĀ sodium hypochlorite are easy to decompose, volatile, chloramine sterilization effect is poor, UV disinfection has limitations, at present ozone is an ideal disinfection method.

As a deep water treatment process, ozone has a strong bactericidal effect. It can kill a wide variety of microorganisms and pathogens, and kills harmful microorganisms such as Escherichia coli, Staphylococcus aureus, bacterial spores, Aspergillus niger, and yeast.

Unlike other disinfection methods, ozone reacts with bacterial cells, penetrates into the interior of the cells, acts on the white matter and lipopolysaccharide, and changes the permeability of the cells, leading to cell death. Therefore, ozone can directly kill bacteria. The ozone has a great advantage that there is no residue. After disinfection, the ozone is decomposed into oxygen, which will not cause secondary pollution.

The advantages of ozone in water treatment sterilization:

1. It has a strong killing effect on various pathogenic microorganisms;

2, rapid disinfection, can instantly decompose organic matter in water;

3. Ozone has a wide range of adaptation and strong oxidation capacity;

4, no secondary pollution, ozone decomposition and decomposition into oxygen;

5, will not produce trihalomethane and other chlorine disinfection by-products;

6. While disinfecting, it can improve the nature of water and produce less chemical pollution.

7. Compared with other disinfection methods, the ozone disinfection cycle is short and more economical.


Post time: Jul-27-2019