1. A method of processing dairy products through membrane filtration, comprising the following stages: a) feeding the dairy product, if necessary, into the surge tank (Fig. 1.1； Fig. 3.1；)； b) subjecting the dairy product to membrane filtration (Fig. 1.2； Fig. . 3.3) to form a permeate fraction and a retentate fraction； c) cooling the permeate fraction (Fig. 1.3； Fig. 3.2) to a temperature below the temperature of the retentate fraction, resulting in cooling of the membrane surfaces. 2. A method according to claim 1, wherein said dairy product is heated to a temperature of 50-65 ° C before membrane filtration. The method according to claim 1, wherein said retentate fraction is maintained at a temperature of 50-65 ° C. during membrane filtration. A method according to any one of claims 1 to 3, wherein the temperature of the permeate fraction is maintained at a temperature of 0-64 ° C during membrane filtration. A method according to any one of claims 1 to 3, wherein the temperature difference between the permeate and retentate fraction is at least 1 ° C, wherein the permeate fraction is colder than the retentate fraction. A method according to any one of claims 1 to 3, wherein said dairy product is selected from the group consisting of skim milk, buttermilk and whey. A method according to any one of claims 1 to 3, wherein at least a portion of the permeate fraction is circulated through the permeate inlet and the outlet of the membrane filtration module. A method according to any one of claims 1 to 3, wherein at least a portion of the retentate fraction is circulated through the inlet for the retentate and the outlet of the membrane filtration module. The method according to any one of claims 1 to 3, used for fractionation of proteins present in the specified dairy product. Spos1. Способ обработки молочных продуктов посредством мембранной фильтрации, включающий следующие стадии:а) подачи молочного продукта, если требуется, в уравнительный резервуар (фиг. 1.1； фиг. 3.
