Application of reverse osmosis membrane in beer brewing
Reverse osmosis technology is a membrane separation technology developed in the early 1960s with pressure as the driving force. This technology is developed from the desalination of seawater and brackish water, and is usually called "desalination technology". Because reverse osmosis technology has the advantages of no phase change, componentization, simple process, convenient operation, small footprint, low investment, low power consumption, etc., it is developing very rapidly. At present, this technology is not only used in the preparation of brackish water, purified water, and ultrapure water, but also in the fields of chemical separation, concentration, and purification, and the environmental protection, medicine, food and other industries are developing rapidly.
Beer is an industry with "high investment, high consumption, high emissions, and difficult to recycle". At present, the unit energy consumption of my country's beer industry is 30%-40% higher than the international level. The transformation of the beer industry's growth mode is particularly urgent, and it is urgent to change the status quo. With the extensive development and application of high technology and the increasing level of people’s living consumption, people’s requirements for beer taste, variety and quality are also increasing, prompting beer manufacturers to continuously reform the original old technology and adopt new technologies and The new technology reduces energy costs and improves beer quality, among which the filtration of beer is the focus of technological innovation.
Most of the beer in the world is filtered by diatomaceous earth, as is the traditional filtering method in my country. However, with this filter, the pollution is serious and the stability is poor. In order to reduce pollution, membrane filtration technology is used to save energy and reduce consumption. The reverse osmosis method produces low alcohol beer. First, the beer is concentrated by reverse osmosis. Due to the poor retention of alcohol by the membrane, a certain amount of permeate is separated together, Then dilute the concentrate with a non-alcoholic solution (such as sterile water), which reduces the alcohol content of the beer.
The use of reverse osmosis membrane filtration technology can realize automatic and continuous production, greatly improve production efficiency, reduce pollution emissions, and reduce production costs.
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