JPS633891A - Article cleaning method - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Field of Industrial Application) The present invention relates to a method for cleaning and cleaning articles contaminated with dust, grime, oil, fat, bacteria, etc. The present invention relates to an optimal method for removing contaminants attached to a surface.

Conventional technology) Conventionally, dust, grime, etc. adhering to objects such as feathers of birds such as ducks, ducks, and chickens, and hair of livestock such as sheep, llamas, and yaks, etc.
A cleaning method for articles that removes contaminants such as oil, bacteria, parasites, and spores involves a dehydration and drying process that removes moisture adhering to the article through a multi-stage regular cleaning process and clean water rinsing process. After the above treatment, a sterilization/bleaching process using an ozone gas-containing air stream or ultraviolet irradiation is often used.

Problems to be Solved by the Present Invention) In order to obtain sufficient cleanliness of articles by the above conventional method, K is
Multiple stages of washing and rinsing steps are required, and in reality, the installation area and equipment costs of the device are excessive, and the cleaning time is also long, so the steps are omitted and sufficient cleanliness cannot be obtained. In addition, in sterilization and bleaching processes using ozone gas-containing air currents or ultraviolet irradiation, static electricity is generated when dry items come into contact with each other, and the charged items form clumps, making it difficult to uniformly disperse them in the air flow. There are disadvantages in that uniform contact cannot be obtained, contaminants that have been classified once are reattached, and that sterilization and bleaching are incomplete because shadows are formed during ultraviolet irradiation and the irradiation is biased. At the commercialization stage of feathers, etc., chemicals such as deodorants and disinfectants are added, but since there is a limit to the effectiveness of the chemicals, as their effectiveness decreases, residual contaminants may generate odor.

Means for Solving the Problems) The present invention has been made in view of the above circumstances, and it
An ozonated water cleaning process in which contaminated items are washed with water in which ozone gas is dissolved (hereinafter referred to as ozone water), a detergent, which cleans and cleans items contaminated with pollutants such as dirt, oil, and bacteria. This method of cleaning contaminated articles is characterized by comprising a detergent cleaning step, a rinsing step with clean water, and a step of removing attached moisture, and the order and number of steps can be set as appropriate. The Chichijo Kita method is particularly suitable when the contaminated article is animal hair such as feathers or animal hair. The above ozonated water is j =
j Op p m range (preferably 30-4t (7p
pm) to adjust the ozone dissolution concentration to an appropriate level. In addition to the above-mentioned feathers and animal hair, the contaminated items include textiles such as K, cotton and synthetic fibers, and clothing used in the medical, food, and electronic industries.
It can also be appropriately applied to cleaning instruments and packing materials.

Function: As is well known, ozone has strong oxidizing and decomposing power, and it sterilizes bacteria and mold, oxidizes and deodorizes odors such as ammonia and mercaptan, decomposes and bleaches pigment components, and decomposes polymeric compounds such as oils, fats, and proteins. It has the effect of becoming lower molecular weight through decomposition.

By immersing and dispersing contaminated articles in ozone water and uniformly moistening the surfaces of the articles, the ozone can be applied evenly to the surfaces of all articles. Contaminants removed from articles through oxidative decomposition are dispersed or dissolved in water, and contaminants adhering to articles are reliably removed in the detergent cleaning process because they have lower molecular weight or are more compatible with detergents.

Example) The present invention will be described in detail below based on embodiments shown in the drawings.

FIG. 1 is a system diagram of an embodiment of the present invention applied to cleaning feathers.

l is the si myosin cleaning tank, which removes contaminated raw feathers
is stirred with a low concentration ozone-containing detergent solution which is a mixture of rinsing water C2 from the detergent rinsing tank, detergent solution C from the detergent washing tank 3, ozone-containing gas a from the ozone water washing tank 2, and ozone water b2. Wash. Most of the pollutants attached to the feathers are removed by being decomposed, reduced in molecular weight, and solubilized by the synergistic action of ozone and detergent. The above %/ozone water cleaning tank 1 has a sealed structure and is equipped with a scum collector at the liquid level, a sludge collector and stirring equipment at the bottom of the tank, and a feather separation/carrying equipment, etc. (not shown).

The ozone-containing gas a/ and ozone water b7 extracted from the tank 1 are introduced into the wastewater treatment facility/3 and treated.

2 is Muko ozone water cleaning tank, finishing the feathers x2 from A/ozone water cleaning tank l, ozone water bj from ozone cleaning tank j, ozone-containing gas a3 and ozone water production equipment? Agitate and clean with ozonated water mixed with medium-concentration ozone-containing gas from The contaminants that could not be removed in the ozone water cleaning tank 1 and that have been attached are further decomposed and removed by the oxidizing action of highly concentrated ozone, reduced in molecular weight, and solubilized to be removed. The grave 2 ozone water cleaning tank 2 has a sealed structure and is equipped with the same equipment as the A/ozone water cleaning tank 1, although not shown. The ozone-containing gas a4 and ozone water b2 extracted from the tank 2 are introduced into the first ozone water cleaning tank 1 and reused for cleaning.

3 is the detergent cleaning tank, &2 the feathers from the ozone water cleaning tank 2
3 is stirred and washed with detergent solution C prepared in detergent preparation equipment/2. Contaminants that cannot be removed by the ozonated water in the previous stage or that have adhered thereto are further removed by the cleaning action of the detergent. The detergent cleaning tank 3 has an open top structure and is equipped with the same equipment as the A/ozone water cleaning tank 1, although not shown, and is also equipped with defoaming equipment. The detergent solution ci extracted from the tank 3 is introduced into &l ozone water cleaning tank 1 and reused for cleaning.

In the detergent rinsing tank, the detergent solution containing contaminants that have adhered to the feathers X from the detergent washing tank 3 is removed by stirring with fresh water. The detergent rinsing tank has an open top structure and is equipped with the same equipment as the ozone water washing tank 1, although not shown. The rinsing water C extracted from the tank 1 is introduced into the detergent adjustment equipment/2 for detergent concentration adjustment, and the rinsing water C is introduced into the fI1 ozone water cleaning tank 1 for reuse.

J is the finishing ozone water cleaning tank, in which the feathers x3 from the detergent rinse tank are washed with ozone-containing gas A4 from the ozone water production equipment 9
and agitate and clean with high concentration ozonated water B4+. High Concentration Ozone The concentration of ozone in water is adjusted by j-jOppmK, but 3O-110pprn is preferred.If it is less than Ojppm, the cleaning effect will be weak.If it is more than jOppm, it will not dissolve unless the pressure is increased considerably. Due to the oxidizing action of the highly concentrated ozone on the feathers X that have been washed in the preceding washing tanks, the slight remaining organic matter, inorganic matter, and organisms such as bacteria are decomposed and sterilized, and the feathers are bleached. The finishing ozone water cleaning tank j has a closed structure and is equipped with stirring equipment and feather separation and conveyance equipment (not shown). Above tank! The extracted ozone-containing gas a and ozone water are introduced into the second ozone water cleaning tank 2 and reused for cleaning.

6 is a finishing rinsing tank, in which the ozonated water containing trace amounts of contaminants that have adhered to the feathers x6 from the finishing ozonated water cleaning tank j is stirred and removed using clean water, thereby obtaining highly purified feathers. The finishing rinse tank 6 has an open top structure and is equipped with the same equipment as the finishing ozone water cleaning tank j, although not shown. The rinsing water C3 extracted from the tank 6 is introduced into the detergent rinsing tank q and reused for detergent removal rinsing.

7 is a dehydrating device such as a centrifugal dehydrator or a passing machine to dehydrate and remove the water that has adhered to the high [K cleaned feathers x7 from the finishing rinse tank t. Although not shown, the dewatering device 7 is equipped with feather conveying equipment. The water molecules 4 separated in the device 7 are introduced into the detergent rinsing tank IK and reused for detergent removal rinsing.

Then, the dehydrated feathers
Cleaned and dried feathers can be obtained.

This is an ozonated water production facility where oxygen gas, air, etc. are used as the raw material gas A/, and arc discharge or wavelength peaks occur at /r3.
mm Ozone generation capacity 1/ for producing ozone gas using ultraviolet rays in the vicinity, an ozone water dissolving tank 10 for dissolving ozone by blowing ozone-containing gas from the device 1/ into fresh water WIC, and an ozone generator/ It consists of an ozone concentration measuring device in ozone-containing gas manufactured by /, an ozone in water ozone concentration measuring device in the ozone water dissolving tank IO, an ozone in water ozone concentration controlling device, etc.

Reference numeral 12 denotes detergent adjustment equipment, which receives one or several types of detergent (2) suitable for cleaning, mixes it, and adjusts its concentration.

13 is a wastewater treatment facility equipped with a sewage adjustment tank, a biological oxidation treatment tank, a sludge separation device, etc., and a scum collector, a sludge collector, etc. installed in each cleaning tank and the liquid extracted from the first ozone water cleaning tank l. Contaminated water discharged/%
dj, dj, dg, etc. are purified. The ozone-containing gas discharged from the first ozone water cleaning tank l is the aeration air A.
The two are mixed at equal pressure and used for wastewater purification. Further, the wastewater treatment described above may be performed together with the wastewater R discharged from other processes other than the process according to the present invention. In the above embodiment, adjusted ozone water is supplied to the ozone cleaning process, but ozone-containing gas may be directly supplied to the ozone cleaning process and used as ozone water. Furthermore, although three ozone water cleaning tanks are provided in the above example, they can be omitted or added as appropriate depending on the properties of the contaminated articles, and the order of the items can also be changed.

When duck feathers were treated according to the above embodiment of the present invention, the feathers had extremely high bulkiness, and contaminants could be completely removed without any degeneration of the feather structure. Also, the feathers after finishing ozone water cleaning: X, <, X7, X, x9
Each of the samples was placed in a glass bottle, sealed, and left in a thermostat at 0°C for 30 days, but no odor, parasites, bacteria, mold, etc. were observed.

Effects) Since the article cleaning method of the present invention can be used to treat articles continuously using a more compact device, the treatment can be carried out in a shorter time, and the article can be completely cleaned without damaging the substrate of the article. Since contaminants can be washed away, a clean article of extremely high quality is obtained.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing one embodiment of the present invention. t: 41 ozone water cleaning tank, +2 2 flat 2 ozone water cleaning tank,
3: Detergent washing tank, ri: Detergent rinsing tank,! : Finish ozone cleaning tank, B: Finish rinsing tank, 7: Dehydration equipment, t: Drying equipment, ? Niosin water production equipment, lQ niosin water dissolution tank,
ll Niosin generator, /2: Detergent adjustment equipment, 13: Waste water treatment equipment, x/~x9: Feather.

Claims (1)

[Claims] 1) A method for cleaning contaminated articles, characterized by comprising the following steps: (B) A step of washing the above-mentioned article with water containing dissolved ozone gas, (B) A step of washing the above-mentioned article with a detergent, (3) A step of rinsing the above-mentioned article with clean water, (d) A step of cleaning the above-mentioned article with water, (d) A step of washing the above-mentioned article with water containing dissolved ozone gas, The process of removing moisture. 2) The method according to claim 1, wherein the contaminated article is animal hair such as feathers or animal hair. 3) The ozone concentration of the water in which the ozone gas is dissolved is 5.
The method according to claims 1 and 2, wherein the content is adjusted to 50 ppm.