Advantages and disadvantages of chlorine dioxide disinfection

Chlorine dioxide disinfection has its unique advantages, including: it can reduce the generation of chlorinated by-products such as trihalomethane in water; When the water contains ammonia, it does not react with ammonia, and its oxidation and disinfection effects are not affected; Can kill pathogenic microorganisms in water; Disinfection is not affected by the pH value of water; After disinfection, the residual chlorine in the water is stable and lasting, and the ability to prevent re-pollution is strong; Can remove the color and taste of water, and does not form chlorophenol smell with phenol; The removal effect of iron and manganese is stronger than that of chlorine; Its aqueous solution can be safely produced and used. Its disadvantages are: chlorine dioxide is explosive and must be prepared on site and used immediately; The preparation of chlorine dioxide with low chlorine content is complicated and the cost is higher than other disinfection methods. The raw materials for preparing chlorine dioxide are sodium chlorate and hydrochloric acid, which are oxidizing or corrosive substances, and there are also safety problems in storage and transportation. The disproportionation products of chlorine dioxide can cause toxic reactions such as hemolytic anemia and denatured hemoglobin in animals.