The sterilization methods of hydrogen peroxide sterilizers are vaporization and atomization.
There are also two ways to diffuse into the space: one is that the generator is integrated in the air-conditioning duct, and the air-conditioning duct diffuses to the space for sterilization. This method has a particularly good sterilization effect, but the cost is too high. The other is that the commonly used independent hydrogen peroxide sterilization equipment is placed in the space for sterilization.

This article focuses on why the more commonly used hydrogen peroxide sterilization equipment is placed in the space to sterilize static sterilization:

Taking the vaporized hydrogen peroxide sterilizer as an example, using 35% hydrogen peroxide disinfectant, the dosage per unit volume is 4~6 ml per cubic meter. Under bacterial conditions, the concentration of hydrogen peroxide in the space will reach 200ppm to 1000ppm, and it can be maintained for more than 30 minutes to achieve log6 sterilization. However, if the air-conditioning system is closed, the hydrogen peroxide will always overflow into the air-conditioning pipeline, and the air flow will accelerate the decomposition of hydrogen peroxide, which will lead to the inability to judge the actual amount of disinfectant applied to the space, thus affecting the disinfecting effect.

Therefore, why should hydrogen peroxide sterilization be static sterilization? Static sterilization has the following requirements:

  1. Turn off the air conditioning system.
  2. The electrical appliances and equipment in the sterilization area should be stopped as much as possible.
  3. If there is a door with a large gap at the junction of the sterilized area and the non-sterile area or other positions that can form air replacement, it is recommended to use tape or plastic wrap to seal it.

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