Cleaning of advanced sanitary tanks

The cleaning of advanced sanitary tanks is a key step in ensuring their hygiene standards and product quality, usually using CIP (cleaning in place) and SIP (sterilization in place) technologies. The following are the detailed steps and technical requirements for cleaning high-end sanitary cans:

1. Cleaning method

The cleaning methods for high-end sanitary tanks mainly include the following:

Spray cleaning: Spray cleaning solution into the tank body through a fixed cleaning ball or a rotating nozzle, and cover the inner wall of the tank body with high-pressure water flow.

Circulating cleaning: Inject cleaning solution from the bottom of the tank and extract it from the top to circulate the cleaning solution inside the tank, enhancing the cleaning effect.

Immersion cleaning: Fully immerse the tank in cleaning solution and remove dirt through natural contact.

2. Cleaning process

The cleaning process usually includes the following steps:

Pre rinsing: Rinse the interior of the tank with warm water (50-60 ℃) to remove most of the residue.

Chemical cleaning: Select appropriate cleaning agents based on the type of dirt, such as acidic or alkaline cleaning agents, and perform cyclic cleaning.

Rinse: Rinse with clean water to remove residual cleaning agents and dirt.

Disinfection: Use hot water (85 ℃, 30 minutes) or chemical disinfectants for disinfection.

Drying: Natural air drying or hot air drying is used to ensure that there is no residual moisture in the tank.

3. Selection of cleaning agents

The selection of cleaning agents should be determined based on the material of the tank and the nature of the dirt:

Acidic cleaning agents, such as nitric acid (HNO ∝), are suitable for removing inorganic dirt.

Alkaline cleaning agents, such as sodium hydroxide (NaOH), are suitable for removing organic dirt.

Disinfectant: such as chlorine dioxide (ClO ₂), used for disinfection and prevention of microbial growth.

4. Cleaning equipment

Can washer: such as MeshClean+high impact can washer, suitable for medium to large tanks, can remove stubborn dirt.

CIP system: an automated cleaning system that completes cleaning by circulating cleaning solution, reducing manual intervention.

5. Verification of cleaning effect

After cleaning, it is necessary to verify the cleaning effect to ensure that there are no stains or microbial residues inside the tank. The verification methods include:

Surface inspection: Check if the surface inside the tank is clean.

Microbial testing: Conduct microbial sampling on the cleaned tank to ensure compliance with hygiene standards.

6. Precautions

Cleaning frequency: Depending on usage, cleaning is required after each production, when changing varieties, or when production is stopped for more than three days before resuming.

Safety protection: When using chemical cleaning agents, it is necessary to wear protective equipment to avoid causing harm to operators.

Environmental requirements: The waste liquid after cleaning must be treated and meet environmental requirements before it can be discharged.