Wine stabilization

Advantages of using MEGA electrodialysis for wine stabilization

Find out how to prevent the occurrence of tartrate crystals in wine

Additive-free technology

Minimal wine losses < 1%

Suitable for organic wine production

MEGA offers new technology, which can fully meet the organic product requirements while successfully removing the ash content from the feed solution and therefore lowering the amount of salt in the final product.

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Electrodialysis as a solution for wine stabilization

Why stabilize wine

Wine is one of the most popular drinks in the world. Consumers today expect all wines to be bright and clear. From time to time small crystalline deposits may occur in wine. These crystals are natural byproducts of wine also known as wine diamond, wine crystals, or cream of tartar.

Potassium hydrogen tartrate (KHT) and calcium tartrate (CaT) are tartrate salts that might encounter in wine and become less soluble due to the presence of ethanol and during subsequent storage of bottled products at low temperatures

Precipitation of tartrates is the main source of instability in bottled wine. Crystals (precipitated insoluble tartrate salts) are completely harmless, but rather have an unpleasant appearance to the consumer. The formation of these crystals results in the formation of deposits at the bottom vat and sometimes in the bottled wine.

How to prevent tartrates in wine

Tartrate stabilization is the process that removes components that contribute to the crystallization of potassium hydrogen tartrate and calcium tartrate which is an undesirable outcome for wine quality.

Electrodialysis (ED) is the right solution for winemakers to eliminate the future formation of tartrate crystals. ED is an electrically-driven method of removing dissolved ionic compounds.

MEGA's electrodialysis (ED) offers new opportunities for wineries to maximize their production, increase profits and significantly reduce waste.

Boost your wine business with MEGA ED

Why use MEGA electrodialysis for wine purification

MEGA electrodialysis makes the wine stabilization process more effective, including the “organic” purity of the commodity product while reducing the operating costs. Our innovative electrodialysis technology is developed for both small and large wineries.

MEGA's ED may operate in a protective atmosphere (nitrogen) to avoid oxidation and colour changes. The electrodialysis does not affect the amount of alcohol.

MEGA provides winemakers with technology with an automatic process with a high reaction rate that allows the demineralization process to be stopped automatically when the desired conductivity is reached. Wine is always immediately and completely stable.

Benefits of Electrodialysis in wine stabilization

Huge reduction of unit operation steps (technology complexity).
Additive-free technology - fully organic products.
Insignificant wine losses (< 1%).
Water consumption for concentrate make-up water - 5% of wine feed.
Continuous process, controlled by conductivity drop.
Effective removal of ta in wine.

MEGA EWSU unit for tartrate stabilization

An industrial scale unit for the wine demineralization using electrodialysis.

A compact autonomous processing unit with a control system for operating and controlling process parameters.

Hygienic characteristics of the unit meeting food industry standards.

Tailor-made solution with optional capacity modification by supplying the unit with ED20/100 or ED20/200 stacks.

Operating in one-pass mode. The achievable rate of demineralization is up to 30 % according to customers´ needs.

The device can be used in both stationary and mobile versions.

Approximate dimensions>

P15 1×EDR20/100, P15 2×EDR20/100: 3,1 m × 1 m × 2,2 m (length × width × height)

How does it work

1. Step - Measure potassium tartrate stability in wine to determine the required degree of demineralization for the correct use of ED for wine stabilization.

2. Step - Electrodialysis in a configuration for tartrate salts processing is an electro-membrane separation process that uses ion-exchange membranes and electric potential difference as the driving force for salt ions transportation.

3. Step (optional) - The reverse osmosis can follow to recover up to 90% of the water used during the wine stabilization process.

Potassium bitartrate - make profit from liquid waste disposal

The possibility of connecting the RO after the ED unit makes it possible to recover between 50 and 90% of the water used to stabilize the wine. The purified water is used again in the stabilizing process.

The RO unit can be modularly connected to the EWSU, with the whole system running automatically.

The retentate (concentrate) coming from RO can be dried to obtain high quality potassium bitartrate, which has a wide range of applications. It is used in the pharmaceutical, food, cosmetic and chemical industries.

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