Контроль и управление непрерывным процессом мембранного удаления лактозы из пахты

Abstract

Membrane processes, such as UV, MF, NF, RO have long established themselves as an effective means of improving the properties of various dairy products, incl. secondary (buttermilk, whey, skim milk). Having different characteristics of NF and UV membranes can effectively retard high-molecular substances and pass low-molecular. In addition, NF membranes are able to separate organic substances from inorganic ones. Based on these properties of membranes, their performance characteristics and general dependencies of membrane separation, it is possible to effectively remove lactose from buttermilk concentrates while maintaining the mineral composition continuously. Membrane separation has several advantages over the enzymatic removal of lactose, which is used in practice. Continuity of membrane lactose removal can be achieved by a specific combination of UV, DF and NF treatment. The aim of these studies is to study the possibility of organizing continuous membrane removal of lactose from buttermilk and developing an appropriate installation scheme. In the course of the experiments it was determined that the UV membranes of the ВПУ-15000 are suitable for UV and DF. Their selectivity for lactose is R = 1%. The NF membrane of the ОПМН brand has a high (R = 99.7%) selectivity for lactose and a low mineral content. This allows them to be used to produce permeate, which is used as a buffer solution. A scheme for automatic control and monitoring of a membrane plant was developed, consisting of three blocks: UV concentration, DF, and NF. The plant provides continuous processing of buttermilk to obtain a high-protein-lipid concentrate of lactose-free. A weak link in the membrane plant is the need for membrane regeneration. In this direction, more research is required.