Why chlorination is more important than Ozone treatment and UV treatment in water?

Chlorination is often considered more important than Ozone treatment and UV treatment in water for several reasons:

1. Effectiveness Against Pathogens: Chlorine is highly effective at killing a wide range of harmful pathogens, including bacteria, viruses, and protozoans. While Ozone and UV treatments can also kill many pathogens, they may not be as effective against certain types of organisms, such as Cryptosporidium, a type of protozoan that can cause serious illness.

2. Residual Disinfection: One of the key advantages of chlorination is that it provides a residual disinfectant. This means that a small amount of chlorine remains in the water after treatment, continuing to kill any new pathogens that may enter the water supply. Neither Ozone nor UV treatments provide this residual disinfection.

3. Cost and Accessibility: Chlorination is generally less expensive and more accessible than Ozone and UV treatments. Chlorine is widely available and easy to transport, making it a practical choice for water treatment in many parts of the world.

4. Oxidation Properties: Chlorine also has strong oxidation properties, which allows it to eliminate certain compounds from water that can affect its taste, odor, and color. While Ozone is also a strong oxidant, UV treatment does not have this capability.

5. Proven Track Record: Chlorination has been used for disinfecting water for over a century and has a proven track record of success. While Ozone and UV treatments are also effective, they have not been used as extensively and their long-term effectiveness is not as well-documented.

It's important to note that each method has its own advantages and disadvantages, and the best choice often depends on the specific circumstances, including the quality of the water source, the resources available, and the specific pathogens that need to be targeted.