How does sodium dichloroisocyanurate work in industrial wastewater?

With the acceleration of global industrialization, industrial wastewater treatment is no longer an option; it's the lifeline for sustainable business development. For companies discharging wastewater containing large quantities of bacteria, viruses, and even certain toxic substances, finding an effective, stable, and economical disinfectant and oxidant is a top priority.

Chemical reaction of SDIC in contact with water

Sodium dichloroisocyanurate (SDIC) is a highly effective and safe disinfectant and oxidant. It plays a vital role in industrial wastewater treatment. It most commonly appears as a white powder or tablet with a faint chlorine odor. When it comes into contact with water, it releases two powerful substances: hypochlorous acid and isocyanuric acid.

These two substances each exert their own effects during this release process:

Hypochlorous acid has a significant advantage: its molecules are extremely small and electrically neutral. This means it is not repelled by the surface charges of bacteria and viruses, as are some other charged disinfectants.

It can quickly penetrate microbial cell walls or viral shells and penetrate directly into the interior. Once inside, it immediately wreaks havoc, rapidly oxidizing key proteins and enzyme systems. Once destroyed, bacteria and viruses are completely eliminated in a very short time, achieving rapid sterilization.

Isocyanuric acid is like a "stabilizer". Cyanuric acid is a magical thing. It will combine with hypochlorous acid in water to form a dynamic balance. Store and slowly release hypochlorous acid to make the disinfection effect longer-lasting.

As a China Manufacturer focusing on the research and production of chemicals, we believe that the purity and stability of chemical raw materials are what customers value most.

Main Product Technical Specifications

Advantages for Industrial Wastewater Use

1. Rapid and Long-Lasting Sterilization

Wastewater discharged from food factories and slaughterhouses inevitably contains pathogenic microorganisms such as E. coli. SDIC rapidly releases available chlorine, quickly penetrating bacterial cell walls and completely inactivating these microorganisms.

Comparative data shows that, at the same dosage, SDIC's sterilization efficiency is two to three times that of ordinary bleaching powder or liquid chlorine. 

2. Detoxification, Transforming Harmful Wastewater into Harmless

SDIC is also highly effective in treating the complex and highly toxic wastewater discharged from chemical plants and dyeing and printing factories, which may contain substances such as cyanide and phenols.

Its core capability lies in its powerful oxidizing properties. When dissolved in water, SDIC produces highly reactive "active chlorine." This active chlorine precisely cuts the molecular chains of these toxic substances. It also destroys the chromophores of complex dye molecules in dyeing and printing wastewater, achieving excellent decolorization.

3. Significant Decolorization and Odor Removal

"Our dyeing and printing factory's wastewater is dark in color and has a strong odor," said Lao Li. "After adding SDIC, not only has the odor disappeared, but the water's color has also become much lighter." This is due to SDIC's powerful oxidizing ability, which breaks down the chromophores of dye molecules.

4. Safe and Convenient Use

SDIC is much safer to store and transport. Its stability and the absence of special pressure vessels significantly reduce the risks of use.