What is the ozone concentration of pure water required by the national standard? What is the minimum amount that can sterilize! The solubility of ozone in
water applications is between 0.1mg/L and 10mg/L. The low value is used as the minimum concentration required for water disinfection and purification, and the high
value is used as the achievable concentration value of "ozone water disinfectant".
When tap water is ozone-opened, the international conventional standard is a solubility value of 0.4mg/L, which is maintained for 4 minutes, that is, the CT value is 1.6.
The remaining ozone concentration in the water can be maintained at 0.1~0.5mg/L for 5~10 minutes to achieve disinfection purposes.
Ozone water disinfection and sterilization are rapid, and the disinfection effect occurs instantly. Once the ozone concentration in clean water reaches a certain level, it will
kill bacteria within 0.5 to 1 minute. When the concentration reaches 4 mg/L, the hepatitis B virus inactivation rate will be 100% within 1 minute.
Herbold reported: At 20°C, when the ozone concentration in water reaches 0.43mg/L, E. coli can be 100% killed, and at 10°C, only 0.36mg/L is needed to kill it all.
When the ozone concentration is 0.25 to 38 mg/L, it only takes a few seconds or minutes to completely inactivate the hepatitis A virus (HAV).
When the ozone solubility in mineral water is 0.4~0.5mg/L, it can meet the sterilization and quality assurance requirements. The reasonable dosage of ozone is 1.5~2.0mg/L.
Bottled water treatment should reach an ozone solubility value of 0.3 to 0.5mg/L, and the ozone added should meet the amount of 2gO3 produced in 1m3 of water. According
to practical experience, the ozone concentration is easily reached when the concentration is higher than 8mg/L.
