Sodium Dichloroisocyanurate (SDIC) is widely used in water treatment due to its strong oxidizing power and highly effective disinfection performance. It plays a vital role in industrial circulating water systems, swimming pools, drinking water sanitation, and large-scale wastewater treatment projects. By suppressing the growth of bacteria, fungi, and algae, SDIC helps improve water quality and maintain system stability.

Industrial Circulating Water
SDIC can serve as an alternative to liquid chlorine or hypochlorites. It effectively controls microorganisms such as sulfate-reducing bacteria and iron bacteria, preventing slime formation, pipe blockages, and equipment corrosion. With minimal corrosive impact on facilities, it ensures stable water quality in industries such as power generation, petrochemicals, textiles, and electronics.

Swimming Pool Disinfection
As a commonly used pool disinfectant, SDIC keeps water clear and transparent, with stable free chlorine levels and reduced irritation compared to traditional disinfectants. It is easy to apply and complies with health standards. For example, outdoor circulating pools typically require 1.5–2.5 g/m³ per day, while indoor pools in summer require 1.5–2.0 g/(m³·day).

Drinking Water Sterilization
SDIC effectively eliminates algae, bacteria, fungi, spores, and viruses such as E. coli, poliovirus, dysentery pathogens, and hepatitis virus. It also removes color and odor caused by pollutants like hydrogen sulfide. Even at very low concentrations (2×10⁻⁶), SDIC achieves a 100% sterilization rate, ensuring safe drinking water.

Wastewater Treatment and Environmental Sanitation
In large wastewater treatment plants and environmental purification projects, SDIC demonstrates strong bactericidal effects on algae, fungi, and parasite eggs. By reducing microbial content before discharge, it helps minimize secondary pollution and protect receiving water bodies.