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Disinfection upgrade for township water plants! Why is chlorine dioxide becoming more and more popular?

01 - Jul - 2025

Recently, many township water plants have quietly made a "big move" - replacing traditional sodium hypochlorite disinfection with chlorine dioxide. This seemingly insignificant change is actually a major upgrade related to health, environmental protection and water quality! Today we will talk about why chlorine dioxide has become the new favorite.

 

1. Stronger sterilization effect, microorganisms have nowhere to escape

 

Stronger sterilization effect, microorganisms have nowhere to escape

If sodium hypochlorite is the "conventional weapon" in the disinfection industry, then chlorine dioxide is the "precision missile" with maximum lethality!

1.Dioxide kills 99% of bacteria and viruses in one minute at a low concentration (0.5-1mg/L). Comparative experiments show that it is more than twice as effective as sodium hypochlorite in dealing with "stubborn elements" such as Cryptosporidium and cyanobacteria. Even if the water is turbid, it can still work steadily and never fail.

2.Adaptable to various water qualities 

The bactericidal effect of sodium hypochlorite is particularly dependent on pH value. Once the water is alkaline, the effect is greatly reduced. However, chlorine dioxide is different. It can work stably in the pH range of 4-10. Whether it is winter or summer, the disinfection effect is always online.

 

A water plant in a rural area in the south reported that algae blooms occurred during the rainy season and there were a lot of water quality problems. After switching to chlorine dioxide, the microbial index compliance rate soared to 99.8%, and there is no need to worry about water quality problems anymore.

 

2. Safer, more assured drinking water

The most troublesome thing about traditional chlorine disinfection is that it may produce carcinogens such as trihalomethanes. But chlorine dioxide is completely different.

1.Zero carcinogenic risk 

Chlorine dioxide kills bacteria by directly oxidizing and decomposing organic matter, without producing chlorination reactions, and completely eliminating harmful substances such as trihalomethanes and chlorophenols. Data shows that after using chlorine dioxide, the chloroform content in water can be reduced by 97%, truly achieving "disinfection without leaving any poison."

2.Cleaner water 

After disinfection with sodium hypochlorite, the water always has a pungent chlorine smell. However, the products of the chlorine dioxide reaction are only trace amounts of sodium chloride and carbon dioxide. The water is clean and odorless, so you don't have to worry about making milk powder for your baby. Some users have reported: "Before, there was always a strange smell when boiling water, but now it tastes sweet when you drink it directly!"

 

3. Not only disinfection, but also improving water quality

Chlorine dioxide is not only a great sterilizer, it can also improve water quality.

1.remove color and odor 

and decompose humic acid and algae metabolites, making the "yellow water" and "fishy water" disappear and restoring the original purity of tap water.

2.Pipe cleaning guard can destroy biofilm, inhibit the growth of microorganisms on the inner wall of the pipe, reduce the risk of secondary pollution, and make every drop of water cleaner.

3.heavy metal nemesis sulfide and cyanide, but also remove iron and manganese ions, making the water smoother. Some water plants have found that after using chlorine dioxide, the maintenance cycle of the water pipe network has been extended by 30%, saving a lot of trouble.

 

4. Simple operation, good news for township water plants

 

Simple operation, good news for township water plants

Considering the relatively weak infrastructure in towns and villages, the use of chlorine dioxide is particularly user-friendly.

1.Has high transportation and storage costs.

However, chlorine dioxide is prepared on-site through special equipment and is produced as needed, so there is no need to worry about the loss of effective ingredients.

2.Intelligent control saves time and effort. 

Modern chlorine dioxide equipment comes with an automatic dosing system that can adjust the dosage in real time according to water quality, directly reducing labor costs by 40%. A water plant technician said: "In the past, I had to manually measure the residual chlorine three times a day. Now I can view the data on my mobile phone. I don’t have to worry about water quality problems in the middle of the night!"

 

5. In the long run, the cost performance is very high

Although the initial investment in chlorine dioxide equipment is high, it is definitely worthwhile when you consider the overall account.

1.The same disinfection effect can be achieved with lower drug consumption , and the amount of chlorine dioxide used is only 1/3 of that of sodium hypochlorite.

2.Less maintenance, less pipeline corrosion and longer equipment life.

3.Lower risk, higher water quality compliance rate, and avoided rectification costs.

According to statistics from a county water bureau in Shandong, the cost of switching to chlorine dioxide can be recovered in three years, and 150,000 yuan in operating expenses can be saved each year thereafter. Who wouldn’t be tempted by this cost-effectiveness?

 

From "having water to drink" to "drinking good water", the upgrade of township water supply is the epitome of rural revitalization. The popularization of chlorine dioxide not only allows people to drink cleaner water when they turn on the tap, but also reflects the water industry's emphasis on health and environmental protection.

In the future, I believe that more water plants will join this "disinfection revolution", allowing technology to empower every drop of clean water and flow into thousands of households!