The method of purification of milk from radionuclides
(57) Abstract:Use: dairy industry, in particular, when cleaning the milk from radionuclides. The essence of the invention: after separation in milk contribute sorbent, which is used as a waste of cereals at a ratio of from 1:80 to 1:100, at the moment of contact with the sorbent resulting mixture is heated to 85-95oC for 30-70 min with stirring, cooled to 2 to 10oC and centrifugation, or by filtration of the resulting precipitate salts of strontium with a desiccant. table 1. The invention relates to methods of cleaning polydisperse liquid media, in particular dairy, from radioactive impurities and can be used in the processes associated with obtaining products safely in sanitary gigienicheskom respect and protection of the environment.There are various ways of cleaning fluids from radionuclides with natural and plumbing zeolite sorbents on the basis of ferrocyanides metals and ion-exchange resins.Closest to the claimed is a method comprising cleaning the milk, separating it skimmed milk, cooled to 4-8oC has podci is using 0.1 volume of wet resin per minute (the ratio of the sorbent milk 1:25 1:30) for 5 h, neutralization of milk 1.5 M solutions NOH or CON, washing the resin from milk proteins, processing salt solution, disinfecting resin and wash it softened water. (U.S. Pat. USA N 3194663, CL A 23 C 7/04, B 01 J 39/04).However, this method is difficult, long and expensive implementation, and in addition, is the pollution of the washing waters.The aim of the invention is the simplification of the purification method, acceleration and cost reduction.The technical result of the invention lies in the fact that the original product is in contact with the sorbent, which use waste vegetable (rice) production in the ratio of 1:80 1:100, followed by heating the mixture to a temperature 88-92oC with periodic mixing for 60-90 min, with the formation of insoluble salts of strontium, and then cooled to 4-8oC and filtering the resulting precipitate salts of strontium. The proposed method does not require special equipment, acidification of milk, neutralization of milk does not alter the composition and properties of the processed product. Can be performed in an industrial environment, in conditions of farms and individual farms.the comfort, get skim milk, and then make a sorbent, which is used as vegetable wastes (e.g., rice) at a ratio of sorbent milk from 1: 80 to 1:100, is heated to a temperature of 80-95oC for 30-70 min with periodic mixing, resulting in the formation of insoluble salts of strontium. Then the mixture is cooled to 2 to 10oC and separated from the salts of strontium by centrifugation or filtration. The cleaning efficiency of skim milk from strontium is 60-65 (see table).Example 1. In 100 ml of skim milk to make 1 g of waste rice production, heat the mixture to 85oC with periodic stirring for 30 min, cooled to 10oC and precipitated insoluble salts of strontium with the waste is separated by filtration, and then determine the specific radioactivity of the sample. The cleaning efficiency of milk is 60
Example 2. In 80 ml of skim milk to make 1 g of waste wheat production, heat the mixture to 95oC with periodic stirring for 70 min, cooled to 2oC, precipitated insoluble layers of strontium together with waste wheat production is isdi is 65 The method of purification of milk from radionuclides of strontium, including separation, separation of obtaining skim milk and contact with the sorbent, wherein in use as a sorbent waste of cereals at a ratio of 1:80 and 100, respectively, in the moment of contact with the sorbent resulting mixture is heated to 85 95oWith over 30 70 min with stirring and the formation of insoluble salts of strontium and then cooled to 2 10oWith and by centrifugation or filtration of the resulting precipitate salts of strontium with a desiccant.
FIELD: food industry; chemical industry; petrochemical industry; pharmaceutical industry; methods and devices of separation of liquid mediums.
SUBSTANCE: the invention presents the method and the device intended for utilization in food industry, chemical industry, petrochemical industry, pharmaceutical industry and ensures an increased efficiency of changing the physical-chemical structure of the liquid mediums. The liquid medium is fed in the form of the two counter-directed streams. The streams are sent in the parallel planes, swirled in the opposite directions, subjected at the mechanical loading to action of the hydraulic impacts and crumpling creating the liquid medium swirling turbulent streams rubbing from the center to the periphery. The liquid medium is fed by cycles, returning from periphery to the rotation center. After the separation process completion conduct processes of settling and filtering. The two counter-directed streams are subjected to swirling in the opposite directions at the identical speeds. In the device the operational tool is made in the form of disks, which are arranged coaxially with the capability of counter-rotation. On each disk there are the ring-shaped and radial grooves. The disks ring-shaped grooves and prominences are installed with a clearance into each other. The volume of the chamber between the disks and the body is connected by the channels to the inlet channels of the liquid medium feeding system. On walls of the chamber and on the external surface of the disks there are the ring-shaped and radial grooves. The disks ring-shaped prominences are mounted with a clearance in the ring-shaped grooves of the walls of the chamber. The shaft of the disks rotation is made horizontal.
EFFECT: the invention ensures an increased efficiency of changing the physical-chemical structure of the liquid mediums.
4 cl, 5 dwg
FIELD: technological processes.
SUBSTANCE: method consists in purification of milk contaminated with cadmium with concentration of (1.1-3.0)±0.1 MPC (maximum permissible concentration), by means of polyfepan powder in proportion of 0.3:1000, contact is executed at temperature of 6°C during 20 minutes, or in proportion of 0.6:1000 at temperature of 45°C during 5 minutes with mixing. Sorbent cleaning is done by centrifugal method in separator-milk purifier.
EFFECT: method allows reduction of cadmium concentration in raw milk.
2 tbl, 2 ex
FIELD: food industry.
SUBSTANCE: this invention covers method of raw milk purification from toxic metals and includes adding of a sorbent agent, purification from sorbent agent, herewith raw milk intoxicated with metals in (1.1…4.0)±0.1 MAC concentration undergoes purification. Purification is performed until 0.5 MAC ratio is reached; contact with a sorbent agent is performed at 6°C, 5 minutes with mixing. Purification from a sorbent agent is performed by a centrifugal method at the separator-milk purifier for cold purification, herewith grapheme powder of 0.1:1000 ratio is used as a sorbent agent.
EFFECT: decrease of toxic metals concentration in raw milk to (95…97)±1% degree of purification.
1 dwg, 2 tbl, 2 ex
FIELD: food industry.
SUBSTANCE: invention relates to a method for purification of defatted milk contaminated with copper, lead and zinc in a concentration from 0.13, 0.23 and 0.34 of MAC respectively. According to the method, one introduces into defatted milk with residual fat content equal to 0.10-0.20% a sorbent preliminarily hydrated with distilled water which sorbent may be represented by alumina oxide powder, broken rice or licorice roots extraction residue, the weight ratio of milk to the sorbents being 25:1. Then one proceeds with maintenance during 20-30 minutes at a temperature of 50-55°C and the sorbent removal by centrifugal method in a milk purifier separator.
EFFECT: invention allows to reduce concentration of copper, lead and zinc and bacterial population in milk and to produce a product of better quality.
1 tbl, 1 ex
FIELD: process engineering.
SUBSTANCE: method of making the filtration element comprises feeding polypropylene into extruder proportioner, smelting it to fluid state, feeding fluid polypropylene to extruder aerodynamic nozzle, air feed to said nozzle, extruding at least one thread to be wound so that tubular structure of filtration element is produced with flat inner surface and threaded outer surface with high density of thread winding at ribs of threaded surface and set of channels extending in helical line from outer surface towards inner surface of said tubular structure. Produced filtration element is used in method of fluid cleaning including fitting said filtration element into cleaning chamber of said filtration element, forcing the fluid therein and through set of filtration element channels and discharging said fluid therefrom. Milk or water can be used as said fluid.
EFFECT: higher efficiency and quality of filtration, simplified design.
7 cl, 2 dwg
FIELD: food industry.
SUBSTANCE: milk product electric treatment device contains a body accommodating an electrode assembly, nipples for liquid input and output and for sediment drain and a current source placed outside the body. The device body is designed in the form of a horizontally positioned hollow cylinder with butt-end caps. Upstream the liquid output nipple, the body has a transition part shaped as a Venturi tube; inside the cylinder, downstream the liquid input nipple, a divider in the form of mesh and preliminary purification mesh electrodes, connected to a separate current source, are sequentially attached. The electrode assembly is designed in the form of cylindrical surfaces consisting of an anode and a cathode coaxially positioned and attached to two discs opposite relative to each other.
EFFECT: elimination of pathogenic microflora, antibiotics, pesticides, disinfection substances, toxins, nitrates, nitrides, heavy metals removal combined with preservation of nutritional and consumer properties of milk products.
SUBSTANCE: group of inventions relates to field of therapy and/or prevention of diseases in mammals, in particular humans. Group of inventions includes medication for treatment and/or prevention of cardiovascular disease, and/or inflammatory disease, and/or liver disease, and/or neurological disease, and/or steatosis by increasing content of polyunsaturated fatty acids in mammal's blood, representing dairy product of ruminants with reduced cholesterol content, where cholesterol content constitutes from 10 mg/100 g of fat to 150 mg/100 g of fat, as well as application of dairy product of ruminants with reduced cholesterol content, in which cholesterol content constitutes from 10 mg/100 g of fat to 150 mg/100 g of fat, for treatment and/or prevention of cardiovascular disease, and/or inflammatory disease, and/or liver disease, and/or neurological disease, and/or steatosis by increasing content of polyunsaturated fatty acids in mammal's blood.
EFFECT: obtaining medication for treatment and/or prevention of cardiovascular disease, and/or inflammatory disease, and/or liver disease, and/or neurological disease, and/or steatosis.
18 cl, 5 tbl, 1 ex
FIELD: food industry.
SUBSTANCE: cheese whey is cleaned from casein dust and grease. Nanofiltration to 20÷30% content of dry substances with simultaneous 25÷50% demineralization, followed by crystallization, is carried out by means of the 3-fold 8-hour cyclic heat treatment of crystallizate. Said treatment consists in sequentially heating it with hot air at the temperature of 60°C for 4 h and cooling with cold air at the temperature of 0°C for 4 hours in each cycle. The crystallization is combined with evaporation till the dry substances concentration of ≥50%, with the subsequent separation into lactose and the demineralized delactosed cheese whey and drying of both components. Heating in each cycle is carried out to the temperature of 32°C, and cooling - to the temperature of ≤10°C.
EFFECT: intensification of the crystallization process.
2 dwg, 2 ex