People have been making wine for thousands of years, and as with most production processes it has evolved quite a bit. Wine making has come a long way from the days of stomping the grapes and filtering the wine by hand. While there are a few wineries that still do those things, now most use machinery (like filter presses) rather than man power to make wine. Read on to find out where filter presses fit in the wine making process.
All About Lees Filtration
What exactly are lees? According to Wine Weekly, "Lees are the dead yeast cells, grape seeds, pulp, stems, skins, and tartrates that separate from the juice during wine making and aging."
As you can see, separating the wine and the lees is a multi-step process that ends with a trip through a filter press. On that trip, the wine and lees slurry is often filtered through a polyester filter cloth filled with a thin layer of Diatomaceous Earth.
Once the slurry has been dewatered you will end up with liquid and a dried filter cake made of lees. The filter cakes can be thrown out or turned into compost. It can be helpful to use a sludge dryer to take even more moisture out of the filter cakes, making them easier to store and transport.
At larger wine producing facilities the separated liquid will often be turned into generic, low-end wine. However at smaller facilities the separated liquid is often treated with a bit more care and can be made into another barrel of wine.
All About the Presses
Our J-Press® filter presses are extremely sturdy and versatile, making them perfect for use in the food and beverage industries. In fact, with over 30% of the market share we are one of the leading providers of filter presses to the industry.
Whether you are a local, small scale winery or a large production facility, we have the right size filter press to meet your dewatering needs. Our small capacity J-Press® filter presses can dewater between 25 gallons and 1,000,000 gallons of liquid per day, and our large capacity presses much more than that.
Both types of presses have frames made of heavy duty carbon steel plate and have wetted parts made of polypropylene with PVC, carbon steel or stainless steel piping manifold. These sturdy materials ensure that the presses will be resistant to corrosion and performing at peak levels for many, many years.
Do you have additional questions about what type of filter press (or filter press accessories) would be best for your dewatering needs? Take our dewatering assessment. Answer a few simple questions and our experts can put togther the best system to meet your needs.