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The game between dust and disinfection: how to solve the dilemma of chlorine dioxide disinfection in food factories?

11 - Sep - 2026

In the modern powdery food ingredients production workshop, an invisible war is staged every day. Delicate milk powder and light starch are dancing in the air, while chlorine dioxide molecules with sterilization mission are struggling in this "fog". When disinfectants encounter production dust, how to prevent them from "embracing" and reducing the disinfection effect? This has become a common problem faced by many food enterprises.

Dry fog disinfection: an invisible guardian of food production

Chlorine dioxide dry fog disinfection technology has been widely used in the field of food processing because of its multi effect sterilization characteristics. Compared with traditional spray disinfection, dry fog disinfection can form smaller particles (usually less than 10 microns). These tiny disinfectant particles can be suspended in the air for a long time and penetrate into every corner, including equipment gaps, pipe interior and other areas that are difficult to be covered by traditional disinfection.

However, in the production environment of powdered food ingredients, this advantage may turn into a challenge. When the dry fog of disinfectant with similar diameter meets the production dust in the air, the physical adsorption phenomenon inevitably occurs.

When disinfectant meets dust: an inevitable encounter

In the production workshops of powdery food such as milk powder and starch, micron level production dust fills the air. These dust particles have large surface area and adsorption capacity. When chlorine dioxide dry fog is released, they are easy to collide and combine due to Brownian motion.

This combination can lead to double negative effects:

On the one hand, the number of free chlorine dioxide molecules decreased, and the effective disinfection concentration in the air decreased; On the other hand, the disinfectant dust complex may settle on the equipment surface or ground, forming an uneven disinfection distribution, leaving a potential hiding place for microorganisms.

What is more difficult is that some dust components may react with chlorine dioxide, further weakening its bactericidal ability. For example, milk powder dust rich in protein may consume some chlorine dioxide, while starch particles may wrap disinfectant molecules and prevent them from contacting microorganisms.

Breaking the dilemma: breaking the dead corner of disinfection with multidimensional strategies

1. pre environmental control: reduce dust background value

Rapid dust removal is the first step. Before disinfection, the dust concentration in the air shall be minimized by strengthening environmental cleaning, optimizing production sealing, and taking local exhaust equipment. It is recommended to disinfect in non production period to avoid disinfection and production at the same time.

2. particle size control technology: make disinfectant run faster

By adjusting the parameters of the dry fog generator, chlorine dioxide particles with smaller particle size (such as 3-5 microns) are produced. Smaller particles not only have longer suspension time, but also can reduce the probability of collision with dust particles due to their higher diffusion speed. At the same time, smaller particle size means larger specific surface area, which improves the sterilization efficiency.

3. intelligent release strategy: grasp the best disinfection opportunity

Use intermittent or pulsed release methods instead of continuous spraying. This method allows time between each release for the disinfectant to work, while reducing the chance of interaction with the continuously generated dust. Combined with real-time air quality monitoring, when the dust concentration temporarily decreases, the disinfectant is released quickly to achieve accurate disinfection.

4. enhance air flow design: guide the directional migration of disinfectants

Reasonably design the workshop ventilation system, create a directional airflow mode, and guide the disinfectant dry fog to flow to the target area. In some key areas, temporary air diversion devices can be set to ensure that the disinfectant can reach the dead corner that is difficult to be covered by the conventional air flow.

5. compound disinfection scheme: establish multiple defense systems

Single disinfection method is difficult to deal with complex environment. It is suggested to use chlorine dioxide dry fog disinfection in combination with other disinfection methods, such as ultraviolet radiation, ozone treatment, etc. This multi-mode disinfection can play a role in different time and space dimensions, making up for the lack of a single method.

In the environment of powdery food production, the effective implementation of chlorine dioxide dry fog disinfection needs to find a delicate balance between stability and efficiency. This is not only a technical problem, but also a management art. Through scientific environmental control, technological innovation and process optimization, food production enterprises can overcome the challenges brought by dust and establish reliable disinfection barriers.

Every disinfection is a commitment to the health of consumers; Every technological innovation is a reinforcement of the food safety defense line. In this invisible war, only through continuous improvement and scientific response can we ensure that every spoonful of milk powder and every portion of starch are safe. Xiuba chlorine dioxide disinfectant can also give full play to its real disinfection value and achieve reliable and assured production.