RU2677476C1 - Method of thermal chemical disinfection and drying of equipment - Google Patents

Abstract

FIELD: technological processes.SUBSTANCE: invention relates to the field of disinfectology and is intended for the disinfection of clothing and equipment contaminated with spore forms of microorganisms. For thermochemical disinfection and drying clothing and equipment, textiles and clothing made of woven and non-woven materials from cotton, synthetic and mixed fibers with protective coatings and without them are treated in batches with a weight not exceeding 11 kg at a time in drum-type devices. Specified equipment is placed in the washing and squeezing machine with a drum loading factor of not more than 2/3 of the volume of products made from cotton fibers or not more than 1/2 the volume of products made from synthetic and mixed fibers. Disinfectant solution with a temperature (70±1) °C with a flow rate of 3 liters⋅kgdry equipment for cotton fiber products or 5 liters⋅kgfor the product of synthetic and mixed fibers. As a disinfecting solution, hydrogen peroxide is used with a concentration of 3 % by weight, to which one of the surfactants is added: catamine AB or neonol AF-9-12 in an amount of 0.1 % by mass, or sulfonol in an amount of 0.2 % mass, or isopropyl alcohol in an amount of 40 % by volume. Then turn on the machine and carry out heat and chemical treatment while rotating the drum for (2.40±0.20) minutes. Disinfect the solution out of the car. Equipment is centrifuged in the washing and squeezing machine at 1,300–1,400 rpmfor (7.00±0.25) minutes or overload the property in a centrifuge and carry out centrifugation at 1,400 rpmfor (5.00±0.20) minutes. Then the equipment is overloaded into a drying machine and dried for (12.50±0.20) minutes by air with a flow rate of 900 m⋅hat a temperature of (100±0.5) °C.EFFECT: use of the invention makes it possible to simultaneously process various materials and products made thereof, including warmed clothes, without deteriorating consumer properties, and also to shorten the duration of disinfection.1 cl, 5 tbl, 1 ex

Description

The invention relates to the field of disinfection, and in particular to methods for disinfection (sterilization) of objects using heat and chemicals. The invention can be used for anti-epidemic and disinfection measures, in the elimination of foci of especially dangerous infections, as well as the consequences of biological emergencies.

For disinfection of clothing, bedding, table and underwear, as well as various products from woven and non-woven materials made from natural, chemical and mixed fibers, chamber and wet methods of disinfection are used [1, 2].

In the steam-air method, the disinfecting agent is a mixture of air and saturated water vapor at a temperature of from 70 to 100 ° C. Depending on the resistance of the object to heating and the type of infection pathogen, the exposure is from 10 to 30 minutes when processing from vegetative forms of microorganisms and viruses, when processing from spore forms - from 30 to 45 minutes [1, 2].

The steam-formalin method consists in exposing the objects to a steam-air mixture and formaldehyde vapor, the amount of which in the chamber depends on the microorganism (vegetative or spore form). Disinfection is carried out at a temperature of 58 ° C, humidity from 80 to 100% and an exposure of 45 minutes to destroy the vegetative forms of microorganisms. For the destruction of spore forms of microorganisms, the exposure is 2 hours 45 minutes. The duration of the full processing cycle, taking into account auxiliary operations for servicing descamers, is increased by another 20-60 minutes [1,2].

Based on the classical chamber methods, a steam-peroxide method for disinfecting clothes was developed, which consists in exposing objects to a steam-peroxide mixture with an exposure of 20 minutes at a temperature of (99 ± 1) ° С.The specified mixture is obtained by spraying with saturated water vapor a 10% (mass.) Peroxide solution hydrogen with a flow rate of 1 l⋅m ^-3 . The duration of the processing of clothes according to the sporocidal regime, taking into account auxiliary operations, is 40 minutes [3].

Wet disinfection consists in soaking property in disinfectant solutions at room or elevated (40-50 ° C) temperature, or in boiling in solutions of detergents. The flow rate of the solution in all cases is 4-5 liters per kilogram of dry property [2, 4-6].

By boiling in a 2% aqueous solution of soda or a 0.5% aqueous solution of any detergent, clothes and linen are disinfected. The exposure during disinfection from vegetative forms of microorganisms from 15 to 30 minutes, from spore forms - 60 minutes [5].

For the disinfection of linen and clothes infected with pathogenic microorganisms by the method of soaking, solutions of hydrogen peroxide (PV) with the addition of 0.5% synthetic detergent are allowed. When processing according to the bactericidal regime, the exposure is from 15 to 60 minutes, the concentration of PV in disinfectants is from 1 to 3%. When processing according to the sporocidal regime, the exposure is from 60 to 120 minutes, the concentration of PV in disinfectants is 6% at room temperature and 3% at a temperature of solutions of 50 ° C. [2, 4, 7].

In laundries of medical institutions, the processes of disinfection and washing of laundry are combined into a single whole. For these purposes, a special technological mode “Program No. 10” has been developed, which is used to treat laundry and heavily soiled products from the infectious diseases departments. The specified mode is used to handle property infected with pathogens of bacterial intestinal and drip, as well as some viral infections. Products are processed in continuous washing machines in several stages. First, a preliminary washing is carried out in a disinfectant solution for 2 minutes at room temperature, then it is drained, water is added at a temperature of 90 ° C and the property is washed without adding detergents for 10 minutes, the water is drained again. At the second stage, the main wash is carried out for 12 minutes in water with detergent at a temperature of 90 ° C. The total duration of the program, taking into account the time for filling and draining water, rinsing and spinning, is more than 70 minutes. After washing, the property is transferred to drying [8 ]. Disinfectants based on hydrogen peroxide are used at the rate of 4 ml of 30% hydrogen peroxide per 1 kg of linen [8]. Taking into account the water consumption during washing (4-5 liters per 1 kg of dry laundry), the concentration of PV in the solution is not more than 0.03%. Obviously, at such a concentration of disinfectant in the solution, the disinfecting effect is achieved due to exposure to high (90 ° C) temperature.

In addition, the specified technological regime is not intended for the disinfection of property infected with pathogens of especially dangerous infections, as well as spore forms of microorganisms. Such property is subjected to disinfection by soaking in disinfectant solutions in accordance with the requirements of the Sanitary and Epidemiological Rules SP 1.3.3118-13 and only after that it is transferred for washing [8].

Patent 2552513 (RU) describes a method for disinfecting clothes made from materials sensitive to heat [9]. To implement the method, a special washing and drying machine with a programmable control device has been developed. According to the aforementioned method, dry clothes are placed in the drum of the machine and disinfected with process air heated to a temperature of 60 to 120 ° C for 5 to 25 minutes. Then, the clothes are cooled with the same air to the temperature at which they will be washed (not above 60 ° C). Next, clothes are washed, followed by drying according to standard programs for household automatic washing and drying machines. The temperature of the process air and the duration of disinfection, as well as the subsequent washing and drying program, are selected depending on the material of the clothing. This patent claims that with this method of disinfection, almost complete destruction of bacteria, viruses and ticks is achieved. However, experimental data confirming this statement are not given in the patent description.

In the literature on sterilization and disinfection, it is indicated that it takes 10 minutes to 1.5 hours to kill vegetative microorganisms with dry air heated to a temperature of 100 ° C. At an air temperature of 120 ° С, the death time for vegetative forms of microorganisms is from 10 to 30 minutes, for spores - 60 minutes or more [10]. Given the above, it can be concluded that, the method of disinfection of clothing, as claimed in patent 2552513 (RU), does not ensure the destruction of spore forms of microorganisms.

The main disadvantage of all the considered methods is the long exposure during the disinfection of products, especially according to the sporocidal regimen. In addition, after disinfection, additional operations are required to bring the property into a condition suitable for operation: washing, airing and drying (drying) of clothing [1, 2, 4, 5]. For chamber disinfection requires sophisticated special equipment operating under pressure. Wet methods are not intended for disinfection of insulated outerwear.

The purpose of the invention is the creation of an effective sporocidal method of disinfection of clothing items, which allows to reduce the duration of disinfection and at the same time process various materials and products from them without compromising consumer properties.

The goal is achieved by the fact that:

- the destruction of microorganisms on clothing is due to the action of a disinfecting solution of hydrogen peroxide with the addition of a surfactant at high temperature in washing and squeezing drum-type devices;

- preservation of the consumer properties of the property is ensured by the effect of the thermal activation of the disinfectant, as a result of which the disinfection time and the concentration of hydrogen peroxide in the solution are reduced, as well as the selected temperature of the disinfectant solution and the temperature of the air and the drying time, which avoids undesirable changes in the properties of materials and sizes processing process.

The thermal activation of disinfectant solutions leads to an acceleration of chemical reactions between the active-active substance (ADV) of the disinfectant and the molecules of the cell, which can significantly reduce the processing time of various objects and (or) reduce the concentration of ADV in the solution [6].

Manufacturers of clothes made of heat-sensitive materials indicate on the labels recommendations for washing products at water temperatures from 30 to 60 ° C. The direct effect of water during washing takes from 10 to 60 minutes and depends on the model of the washing machine and the selected washing program. At the same time, for the majority of products, short-term exposure to high temperature is allowed: drying in tumble dryers at low (not more than 100 ° С) temperatures and ironing under gentle conditions (not more than 150 ° С) with or without steam.

The essence of the invention is the thermochemical processing of clothing in a washing-squeezing device of drum type pre-heated to 70 ° C with a solution of 3% (mass.) Hydrogen peroxide with the addition of one of the surface-active substances in the amount of: catamine AB or neonol AF-9-12 - 0.1% wt., Or sulfonol - 0.2% wt., Or isopropyl alcohol - 40% volume for (2.40 ± 0.20) minutes, followed by centrifugation in the same device at 1300-1400 rpm⋅ min ^-1 (7.00 ± 0.25) minutes or in a separate centrifuge for (5.00 ± 0.20) minutes and convection Willow drying in a tumble dryer for (12.50 ± 0.20) minutes with air at a flow rate of 900 m ³ ⋅ h ^-1 at a temperature of (100 ± 0.5) ° С.

Industrial applicability of the present invention is that for the implementation of the method can be used existing drum-type equipment for laundries with a loading mass of property of not more than 11 kg:

- household and professional automatic washing and squeezing machines with vertical loading, which have the function of pausing and continuing the program with the possibility of adding laundry during washing and rinsing, the function of selecting the number of revolutions during the spin cycle, and also having a separate dedicated program for rinsing and then spinning (the so-called program for freshening clothes or “last rinse and spin”, or “short rinse and spin”);

- centrifuges with a spin speed of at least 1300 rpm and with the possibility of forced (emergency) stop of the spin;

- drying machines with ventilation, with the possibility of forced stopping the drying process, regulating the drying temperature from 80 to 100 ° C and with an air flow rate of at least 800 m ³ ⋅h ^-1 .

At an air flow rate of 800 m ³ ⋅ h ^-1 or more, an explosive and fire hazardous concentration of isopropyl alcohol is not created during the drying process using a water-alcohol disinfectant solution.

Equipment maintenance is carried out in accordance with its technical description and operating instructions. Disinfection work is carried out in compliance with regulatory documents governing the handling of pathogenic microorganisms, as well as safety precautions when handling chemicals and explosive and flammable substances, with hot liquids and objects. In the course of work, respiratory, skin and eye protection is used.

The claimed method of thermochemical disinfection and drying is intended for the disinfection of clothing, textiles and clothing from woven and non-woven materials from cotton, synthetic and mixed fibers with and without protective coatings, including with insulation made of synthetic fibers. The method consists of two successive stages: stage No. 1 "Disinfection", in which the thermochemical processing of clothing in a disinfectant solution and the removal of liquid from it by centrifugation are carried out, and stage No. 2 "Drying", in which they continue to remove liquid from the property by convective drying hot air to dry completely.

Before processing, products are sorted by type of material into two groups: “cotton” and “synthetics and mixed fibers”. The cotton group includes products made from 100% cotton fibers and cotton fibers with a synthetic content of not more than 20%. The group “synthetics and mixed fibers” includes products from synthetic and mixed (synthetics content more than 20%) fibers with protective coatings (membranes and moisture-repellent impregnations) and without them, outerwear and products with insulation made of synthetic fibers.

For the preparation of a disinfecting solution, technical hydrogen peroxide with an ADV content of from 35% to 40% or medical PV with an ADV content of 30% to 40%, which corresponds to GOST 177-88, is used. The remaining components: catamine AB (KAB), neonol AF-9-12 (N), sulfonol (C), isopropyl alcohol (IPA) - with purity qualifications no worse than technical ones.

Before preparing the disinfecting solution, the actual content of ADV in hydrogen peroxide is determined by the volume permanganometric method and, taking into account the data obtained, the required amount of a technical or medical preparation is calculated according to formula 1:

Where:

V _PV - the amount of hydrogen peroxide, technical or medical, necessary for the preparation of the formulation, l;

3 - the content of hydrogen peroxide in a disinfectant solution,%;

C _PV - the content of hydrogen peroxide in technical or medical hydrogen peroxide,%;

V _DR - the volume of the formulation, l

A disinfecting solution in a given quantity is prepared in a separate container (s) made of stainless steel, aluminum or heat-resistant plastic by mixing the calculated amount of components with hot or pre-heated tap water (Table 1).

The surfactant is dissolved in hot (75 ± 1) ° C water, then the required amount of technical or medical PV is added and mixed. The water-alcohol disinfecting solution is prepared as follows: IPA and technical or medical PV are mixed, then hot mixture is poured into this mixture (98 ± 1) ° С water with constant stirring. By heating the containers and components with hot water during the preparation of the disinfecting solution, its temperature drops to (70 ± 1) ° C. The ready-made disinfecting solution is immediately used for its intended purpose.

On the control panel of the washing and squeezing machine, the program “Last Rinse and Spin” is selected and installed, choosing the maximum spin speed for this machine. Products homogeneous in material composition are loaded into the drum of a washer-squeezer with a drum loading factor of not more than 2/3 of the volume of products made of cotton fibers or not more than 1/2 of the volume of products of synthetic and mixed fibers, manually disinfecting solution with temperature (70 ± 1) ° С with a consumption of 3 l⋅kg ^{-1 of} dry property for products from cotton fibers or 5 l⋅kg ^-1 for products from synthetic and mixed fibers. Next, the processing is carried out according to one of the options below.

Due to the heating of the parts of the washing machine and clothing, the temperature of the disinfectant in the process of thermochemical processing decreases, on average, by 10 ° C, from 70 to 60 ° C.

Option 1 - thermochemical processing and centrifugation in different devices. It is used if in the used washing and squeezing machine the maximum spin speed is less than 1300 rpm.

The machine is turned on and the thermochemical treatment is carried out while rotating the drum for (2.40 ± 0.20) minutes, the disinfectant solution is automatically drained from the machine. At the end of the fluid drain, the machine is forcedly turned off, after the lock is unlocked, the machine cover and drum are opened, the property is loaded into a centrifuge, it is turned on and centrifuged at 1400 rpm min ^-1 for (5.00 ± 0.20) minutes. centrifuge, after disabling the lock, open the lid of the centrifuge and reload the property into a tumble dryer. Turn it on and dry things for (12.50 ± 0.20) minutes with air with a flow rate of 900 m ³ ⋅ h ^-1 at a temperature of (100 ± 0.5) ° C. At the end of the set time, the dryer is forcibly turned off, the property is unloaded and use as directed.

Option 2 - thermochemical processing and centrifugation in one device. It is used if the maximum spin speed in the used washer-squeezer is 1300 rpm or more.

The machine is turned on and thermochemical treatment is performed when the drum is rotated for (2.40 ± 0.20) minutes, the disinfectant solution is automatically drained from the machine and centrifuged at 1300 - 1400 rpm- ¹ for (7.00 ± 0 , 25) minutes. At the end of the spin cycle, without waiting for the completion of the operation to shake the property, forcibly turn off the washing machine. After unlocking the lock, the lid of the washing machine and the drum are opened, the property is transferred to the dryer. Turn it on and dry things for (12.50 ± 0.20) minutes with air with a flow rate of 900 m ³ ⋅ h ^-1 at a temperature of (100 ± 0.5) ° C. At the end of the set time, the dryer is forcibly turned off, the property is unloaded and use as directed.

The sequence of operations for the full cycle of processing property declared by the claimed method, as well as their content and duration in two versions are presented in table 2.

The total duration of the complete processing cycle is 28.4 minutes. When processing according to option 1 (using a washer-squeezer, a centrifuge and a drying machine), disinfection and drying of VI take 24.4 minutes, and auxiliary operations of intermediate transfer from one machine to another take 4.0 minutes. When processing according to option 2 (using a washer-squeezer and dryer), the disinfection and drying operations of the VI take 26.4 minutes, and the auxiliary operations of intermediate reloading from one machine to another take 2.0 minutes.

To ensure full loading of the centrifuge and the drying machine, the nominal loading mass of which is 10 kg of dry products, at stage No. 1 "Disinfection" according to the claimed method, use:

- when processing property from cotton fibers, one washing and squeezing machine with a nominal loading mass of 10 kg or simultaneously two machines with a loading mass of 5-6 kg;

- when processing property from synthetic and mixed fibers, depending on the volume of the drum, one or two washing and squeezing machines with a nominal loading weight of 10 kg, or simultaneously two or three machines with a loading weight of 5-6 kg.

The proposed method differs from analogues - wet methods of disinfection and patent 2552513 (RU) in that to achieve a sporocidal effect, a disinfectant solution with a concentration of hydrogen peroxide of 3% and an initial temperature of (70 ± 1) ° C is used, which decreases during the thermochemical treatment to ( 60 ± 1) ° C. The total duration of exposure to the disinfectant is the sporocidal exposure, counted from the moment the solution was supplied to the drum of the washing machine until the drying of the VI, was reduced by 4 times (from 60 to 14.9 minutes). Drying time is reduced 1.6 times (from 20 to 12.5 minutes) compared to the standard factory drying program. The claimed method can handle not only linen and lightweight products, but also clothing and clothing with insulation made of synthetic fibers (for example, outerwear), for disinfection of which only chamber disinfection methods are used. To implement the method, a set of washing-squeezing and drying equipment of the drum type for domestic and professional use is used without changing its design. This set of equipment allows you to combine the disinfection process combined with short-term hygienic washing in one processing cycle, which is especially important when disinfecting underwear, with the drying process. The reduction in sporocidal exposure and drying time led to a reduction in the effect of the thermal factor on heat-sensitive products. As a result of this, at the end of the processing cycle, the property is ready for use, and the consumer properties of the products do not deteriorate.

The possibility of implementing the claimed invention, its effectiveness in various applications, as well as the preservation of consumer properties of clothing property are confirmed experimentally in laboratory conditions.

An example of the method

The property was disinfected by thermochemical disinfection and drying using a drum-type washer-squeezer and dryer: household automatic washing machines Ardo T80X, Miele W690 F WPM, Whirlpool AWT 2295 and professional equipment for laundries - LC-10 centrifuge and Lotos dryer »LS-10. The main technical characteristics of the equipment are presented in table 3.

In the experiments, overalls were used: items of underwear, lightweight and outerwear, including warm clothing, both individually and in the form of individual seasonal sets of property (table 4). The garments were made of cotton, mixed (cotton with synthetics added) and synthetic (polyamide, polyester, elastane) fabrics, including those with a moisture-repellent treatment of the fibers with silicone or with a PTFE laminated moisture-proof membrane. All property was of 4 degrees of pollution - heavily worn with visible traces of pollution of mineral and organic origin (dust, rust, dirt, human skin secretions, fuels and lubricants, traces of food and drinks).

The effectiveness of disinfection was evaluated by the bacteriological method using test objects from the same material as the processed products, in accordance with the requirements of Guide R 4.2.2643-10 [11]. Methods and means of disinfection of clothing and property should provide 100% destruction of microorganisms at objects with their initial infection of at least 1⋅10 ⁵ CFU⋅cm ^-2 [11].

An agar spore culture of Bacillus subtilis (strain 3) with a mature spore content of at least 90% was used as a test microorganism. The density of contamination of the test objects was not less than 1 510 ⁵ CFU⋅cm ^-2 . Infected test objects of 3-5 pieces were placed inside and outside on each piece of processed property.

The required amount of disinfectant solutions was prepared in accordance with the above description at the rate of 3 l⋅kg ^-1 dry property for products made of cotton fibers and 5 l⋅kg ^-1 for products made of synthetic and mixed fibers.

When processing according to option 1, two Ardo T80X washing machines were used to disinfect cotton property; two Ardo T80X washing machines and one Whirlpool AWT 2295 were used to disinfect mixed and synthetic fiber property; one LC-10 centrifuge and one LS-10 dryer. The “Last rinse and final spin” program was installed on the control panel of the washing machines at a speed of 800 rpm.

When processing according to option 2, two Miele W690 F WPM washing machines were used simultaneously for disinfecting cotton property, three Miele W690 F WPM washing machines were used to disinfect mixed and synthetic fiber property; one drying machine LS-10. On the control panel of the washing machines installed the program "Last rinse and final spin" at a speed of 1300 rpm.

Cotton fiber property was loaded into washing machines for 2/3 of the drum volume in each (5 kg). Assets of synthetic and mixed fibers were loaded per 1/2 drum volume into each (3.5-4.0 kg).

At the same time, a disinfectant solution was manually poured into all washing machines, the drums were closed, and the machines were turned on. Next, a property processing cycle was carried out according to option 1 or 2 in accordance with the description presented in table 2. The duration of operations was controlled using a stopwatch.

After unloading from the dryer, test objects were removed from the property and placed in individual containers with a liquid nutrient medium. The resulting bacteriological samples were processed in accordance with the requirements of Guidelines P 4.2.2643-10 [11]. Tests were performed in triplicate for each formulation and treatment option. The completeness of neutralization of the residual effect of the disinfecting formulation in bacteriological samples was at least 70%. The results are presented in table 5.

At the same time, during the experiments, we evaluated the change in the consumer properties of the property (humidity, shrinkage, color, strength and moisture protection properties), as well as the skin-resorptive and local irritating effect of clothing materials after processing.

Humidity was calculated as the ratio of the difference in the mass of garments after and before processing to their mass before processing (to the mass of dry objects) [12]. Shrinkage of garments was determined by comparing their linear characteristics before and after processing [13]. The color change was determined visually according to GOST 9733.0-83 and GOST 9733.15-83. The strength of the fabric was evaluated by determining the tensile properties of tensile according to GOST 3813-72. Moisture protective properties of the fabric were evaluated by the method of "purse" according to GOST 3816-81 and GOST R 12.4.202-99. The skin-resorptive and local irritating effect of clothing materials after processing was evaluated by the application method in accordance with the requirements of Guidelines P 4.2.2643-10.

After disinfection by the claimed method, the residual moisture of the property was from 1.5 to 4.1% (table 5). The data obtained comply with the sanitary and hygienic requirements for clothing and property that is issued to the consumer after disinfection or wet-heat treatment: the residual humidity should not exceed 5% [12].

It was experimentally established that processing by the method of thermochemical disinfection and drying practically does not change the linear characteristics of clothes: shrinkage is from 0.4 to 1.1 cm. To change the linear characteristics of clothes by one size, shrinkage should be at least 4 cm across the product, along the length products - not less than 6 cm [13].

As a result of visual inspection, it was found that the color of the products after disinfection practically did not change the color and shade. The strength of the fabric of the products after disinfection slightly decreased, however, the magnitude of the change did not exceed the permissible limits for these materials. In the course of determining the water resistance of samples of membrane tissue and tissue with water-repellent silicone impregnation, subjected to a single treatment by the claimed method, the penetration of water through the tissue within 24 hours of observation was not established.

Toxicological studies carried out on milk pigs by the application method showed that the property, after being treated by the method of thermochemical disinfection and drying, does not have a skin-resorptive and local irritating effect on the skin of experimental animals, which allows us to indirectly judge the safety of disinfected clothes for humans.

The data presented in table 5 indicate that the method of thermochemical disinfection and drying of clothing items provides complete disinfection of products with a density of contamination by bacterial spores from 1.45⋅10 ⁵ to 7.76⋅10 ⁵ CFU⋅cm ^-2 with a single load drum-type washing and squeezing and drying devices no more than 11 kg. The exposure time of the disinfecting solution is 14.9 minutes, which is 4 times less than with classical wet disinfection methods. Since the claimed method ensures the complete destruction of bacterial spores, which are one of the most stable forms of microorganisms, under experimental conditions, it will also be effective in relation to other, less stable microorganisms (viruses, fungi, bacteria in a vegetative form, etc.).

The claimed method allows you to simultaneously process different in composition materials and products from them, including insulated clothing. After disinfection, the color, strength and moisture-proofing properties of the materials do not change; clothes shrink almost never. The property after disinfection does not have a skin-resorptive and local irritant effect and can be immediately used for its intended purpose.

MATERIALS EXPLAINING THE INVENTION

INFORMATION SOURCES

1 Instructions for the disinfection and disinsection of clothes, bedding, shoes and other objects in steam-formalin, steam and combined disinfection chambers and the disinfection of these objects in air disinfection chambers: Approved. Chief State Sanitary Doctor of the USSR 08/29/1977. / A collection of the most important official materials on disinfection, sterilization, disinfestation, disinfestation. // Under the general. ed. M.G. Shandals. In 5 t. T. 3. Anti-epidemic measures in medical institutions. Disinfection of individual objects. - M .: Rarog LLP, 1994. - S. 419-435.

2 Guidelines for the disinfection of products from chemical fibers and their various combinations with natural fibers: Approved. Deputy Head of the Main Directorate of Quarantine Infections of the Ministry of Health of the USSR December 3, 1980 No. 28-8 / 6 / Collection of the most important official materials on disinfection, sterilization, disinsection, and disinfestation. // Under the general. ed. M.G. Shandals. In 5 t. T. 3. Anti-epidemic measures in medical institutions. Disinfection of individual objects. - M .: Rarog LLP, 1994. - S. 464-474.

3 Steam peroxide method of disinfection: patent 2566727 (RU): IPC A61L 2/07 (2006.01), A61L 2/20 (2006.01) / Bukhaeva S.R. (RU), Dobrynin D.G. (RU), Lakomov V.P. (RU), Morozov A.S. (RU), Scherbakov M.G. (RU); applicants and patent holders of the Russian Federation (RU) and FSBI “48 Central Research Institute” of the Ministry of Defense of the Russian Federation (RU); declared 07/03/2014; publ. 10/27/2015.

4 Safety of work with microorganisms of I-II pathogenicity (danger) groups. Sanitary and epidemiological rules of the joint venture 1.3.3118-13: Approved. by the resolution of the Act of the Chief State Sanitary Doctor of the Russian Federation dated November 28, 2013 No. 64 / Information legal portal "Consultant Plus" - Access mode: www.consultant.ru. (Annex 1).

5 Safety of work with microorganisms of the III-IV groups of pathogenicity (danger) and pathogens of parasitic diseases. Sanitary and epidemiological rules of SP 1.3.2322-08 (as amended on 06/29/2011): Approved. by the Decree of the Chief State Sanitary Doctor of the Russian Federation No. 4 dated January 28, 2008 (as amended and supplemented by Resolution No. 42 of June 2, 2009; No. 86 dated June 29, 2011) / ConsultantPlus Information Legal Portal - Access mode: www.consultant. ru. (Appendix 2).

6 Vashkov V.I. Guide to disinfection, pest and disinfestation. - M .: Medgiz, 1952.

7 Instructions for using hydrogen peroxide with detergents for disinfection purposes: Approved. Head of the Main Sanitary and Epidemiological Directorate of the Ministry of Health of the USSR 08/29/1970 No. 858-70 / Collection of the most important official materials on disinfection, sterilization, disinsection, disinfestation. // Under the general. ed. M.G. Shandals. In 5 t. T. 2. Disinfecting and sterilizing agents. Disinfection, pre-sterilization cleaning and sterilization of medical devices - M .: Rarog LLP, 1994. - P. 130-135.

8 Technology of linen treatment in medical institutions: Guidelines MU 3.5.736-99. - M .: Federal Center for State Sanitary and Epidemiological Supervision of the Ministry of Health of the Russian Federation, 1999.

9 Method of disinfection of linen and washer-dryer: patent 2552513 (RU): IPC D06F 25/00 (2006.01), Hanau Andreas (DE), Koch Thomas (DE), Moschutz Harald (DE); applicant and patent holder BSH BOSCH UND SIEMENS HAUSGERETE GMBH (DE); declared 05/04/2012; publ. 06/10/2015.

10 Vashkov V.I. Means and methods of sterilization used in medicine. - M .: Medicine, 1973. (S. 70-72).

11 Methods of laboratory research and testing of medical prophylactic disinfectants to assess their effectiveness and safety: Guideline P 4.2.2643-10. - M .: Federal Service for Supervision of Consumer Rights Protection and Human Well-Being, 2010.

12 Gerasimova V.F. Laundry production technology. M .: Leg-prombytizdat, 1985.

13 Sakulin B.S., Amirova E.K. Designing men's and women's clothing: a Textbook. - M.: Academy, 1998.

14 Operating Instructions for the Ardo T80X automatic washing machine.

15 Operating Instructions for the Whirlpool AWT 2295 Automatic Washer.

16 Operating Instructions for the Miele W690 F WPM Automatic Washing Machine.

17 Drying machines "Lotus" LS-25, LS-25-01, LS-10. Operating Instructions LS-25.00.00.000 OM. - Vyazma.

18 Centrifuge laundry LC-10. Operation manual LC-10.00.00.000 OM. - Vyazma.

Claims (1)

The method of thermochemical disinfection and drying of clothing, textiles and clothing from woven and non-woven materials from cotton, synthetic and mixed fibers with and without protective coatings, including with insulation from synthetic fibers, characterized in that the property is processed in batches of no more than 11 kg at a time in drum-type devices, this property is placed in a washer-squeezer with a drum load factor of not more than 2/3 of the volume of cotton fiber products or not more than 1/2 bemsya articles from synthetic and mixed fibers manually poured into the drum with the disinfectant solution temperature (70 ± 1) ° C at a rate of 3 l⋅kg ^-1 dry property for articles of cotton fibers or ^-1 for 5 l⋅kg article of synthetic and mixed fibers, while hydrogen peroxide with a concentration of 3% by mass is used as a disinfecting solution, to which one of the surfactants is added: catamine AB or neonol AF-9-12 in an amount of 0.1% by mass, or sulfonol in the amount of 0.2% of the mass., or isopropyl alcohol in the amount of 40 % by volume, then turn on the machine and carry out thermochemical treatment while rotating the drum for (2.40 ± 0.20) minutes, disinfectant solution is drained from the machine, the property is centrifuged in a washing and squeezing machine at 1300-1400 rpm ^-1 for (7.00 ± 0.25) minutes or the property is transferred to a centrifuge and centrifuged at 1400 rpm min ^-1 for (5.00 ± 0.20) minutes, then the property is transferred to a tumble dryer and dried for (12 , 50 ± 0.20) minutes with air with a flow rate of 900 m ³ ⋅ h ^-1 at a temperature of (100 ± 0.5) ° С.