The vinegar will be filtered after it has been made. The sediment, which typically constitutes around 3% of the final product, is eliminated by pressing the vinegar through paper filters using stainless steel plates. After a series processes in producing natural vinegar, the ultrafiltration is used to remove the final insoluble particles.

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The main reason white vinegar needs to be filtered is to improve its quality and purity, as well as to solve some of the problems that can occur during the traditional fermentation process. Here are some of the common reasons:


● Removal of precipitation and suspension

During the fermentation process of white vinegar, precipitation may occur in the vinegar from the autolysis of acetic acid bacterial bodies, or there may be suspended microorganisms, proteins and other impurities. Through filtration, these precipitates and suspensions can be effectively removed to make the vinegar clearer.

Removal of precipitation and suspension

● Decolorization

White vinegar fermentation material may contain pigments, and these pigments will cause white vinegar to show light yellow, brown, beige and other problems after fermentation. Filtration technology can completely decolorize the vinegar, improve its transparency and make its appearance more attractive.

● Improve product purity

Filtration can effectively remove impurities and improve the purity of white vinegar. This is very important for some applications that need high purity vinegar, such as food industry, pharmaceutical industry and so on.

● Reduce production cost

The traditional activated carbon decolorization process may increase the production cost. The use of filtration modern technology can omit the activated carbon decolorization step, thus reducing production costs.

Traditional process

Traditional process

However, the traditional vinegar industry has the following problems:

  • ● Even if white vinegar is blended with alcohol for fermentation, the acetic acid bacteria will autolyze in the late stage and produce precipitation.
  • ● White vinegar fermentation material contains pigment, which leads to problems such as light yellow, brown and beige after fermentation.

Modern membrane filtration process

Advantages of membrane filtration technology:

  • ● Thorough decolorization, high transmittance, no return to muddy, no precipitation.
  • ● Save the activated carbon decolorization link, reduce the production cost.
  • ● Separation membrane adopts staggered flow filtration mode, not easy to be blocked.
  • ● Long service life of membrane element, low regeneration cost, stable process, simple operation.
  • ● The process is simple, shorten the production cycle, effectively reduce labor intensity and production costs by 20-60%.
  • ● Sanitary standard production, in line with QS requirements.

What Sanitek can do in this procedure?

By ensuring the functionality and durability of your equipment, Sanitek’s tailored filtration solutions contribute to long-term cost savings on maintenance and operational expenses.

Sanitek’s market-leading filtration systems specialize in the removal of oil and particles from water streams, addressing environmental regulations or injection well standards. Our innovative offerings encompass oil adsorptive guard filters, high-efficiency coalescers, as well as disposable and washable solid cartridge solutions.

For this specific application, Sanitek designs and manufactures filter cartridges and filter housings. Our Oltek pleated filter cartridge and Oltek string wound filter cartridge stand out as ideal solutions for maintaining the required purity levels in this condition.

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