Wine lees separation and dehydration

Wine lees separation and dehydration refers to the process of solid-liquid separation and water removal of wine lees produced during winemaking or fermentation. Wine lees is a mixture of wine lees residue, wine lees liquid and water, containing high water content and solid particles. Through separation and dehydration, the water content of wine lees can be reduced, the volume can be reduced, and subsequent treatment, utilization or disposal can be facilitated. The following are some common methods for wine lees separation and dehydration: 1. Mechanical pressing: Mechanical pressing refers to the method of using pressure difference to separate water from wine lees. Wine lees pass through filter media such as filter screens and filter cloths. Under the action of pressure difference, water seeps out and is collected, while solid particles remain in the filtrate. 2. Centrifugal dehydration: Centrifugal dehydration is a method of separating water and solid particles in wine lees by high-speed rotating centrifugal force. Through the high-speed rotating centrifugal mechanism, water is pushed to the wall of the centrifuge to form a liquid layer, and solid particles are deposited on the layer. Finally, the water and solid particles are discharged separately through the discharge equipment. 3. Drying: Drying is to place the wet wine lees in the drying equipment and use hot air or other heat sources to dehydrate the wine lees. By heating and wind power, the water in the lees is evaporated, thereby reducing the water content of the lees. When separating and dehydrating the lees, it is necessary to select a suitable method according to the characteristics of the lees and the processing requirements. At the same time, attention should also be paid to the selection of equipment and the adjustment of operating parameters to obtain the best separation and dehydration effect. The subsequent processing, utilization or disposal needs to be processed according to the purpose of the lees and local environmental protection requirements, such as feed, livestock and poultry breeding materials, fertilizers, etc.