JPH02203992A - Device for washing and purifying article - Google Patents

Abstract

PURPOSE:To improve quality of article by providing a high concentration ozone water producing device, a germ-free water producing device, and a means for supplying outlet ozone to the germ-free water producing device. CONSTITUTION:Ozone produced in an ozonizer 2 is sent to a high concentration ozone gas mixer 4 and dissolved at an ozone dissolution reactor 5, wherein germ-free water is used. The ozone water thus produced is sent to an article washing and purifying device 13. The ozone fed from an outlet ozone mixer 19 is sucked and mixed into the water flowing into a fluid channel 24, where the ozone is rapidly decomposed by the action of ultraviolet radiation generated by an ultraviolet radiation lamp 21 to produce nascent oxygen. The water flowing through the fluid channel 24 is sterilized and purified by the action of the nascent oxygen and ultraviolet radiation, which is sent to the article washing and purification device 13, while on the other hand the water in a reservoir 26 is sent to an active carbon filter 27, where it is filtered to obtain germ-free water. In this manner, washing efficiency is promoted, resulting in improved quality of articles.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is used to clean and purify articles such as raw materials, parts, intermediate products, packaging and transportation materials in food, medicine, electronics and precision industries, etc., and reduce yield. The present invention relates to an article cleaning and purifying device that can improve the quality of products without causing any damage.

[Conventional technology] Conventionally, cleaning and purification of articles has been carried out using mechanical frictional force, chemical reaction force of chemicals such as detergents, oxidizers, sterilizers and insecticides, and physical force such as hot water, hot water, steam, and ultraviolet rays. Or, it is performed in multiple stages or in a combination of multiple types, requiring complicated operations for a long time, and using a large amount of washing water.

Also, attempts have been made to use ozonated water to clean and purify articles.

[Problem to be solved by the invention] In order to sufficiently wash and purify an article using the above conventional method, a plurality of mechanical purification steps, chemical purification steps, and physical purification steps are required.
In reality, the equipment becomes larger and the equipment cost becomes excessive, and the types of detergents such as disinfectants, neutralizers, etc. Not only does this increase the amount of liquid, energy consumption, and time required, requires more manpower, and reduces yield, but it also increases the cost of pollution control measures such as wastewater volume load and water quality load, so many processes are omitted. However, there are numerous problems such as residual chemicals and side-reactants, poor product quality and deterioration due to insufficient cleaning of products, and decreased yields, and even environmental pollution.

Furthermore, the conventional technology has a problem in that impurities such as proteins and fats and oils tend to remain.

Furthermore, when ozonated water is used for cleaning and purifying items, ozone odor may remain on the items, and attempting to remove this by cleaning requires a large amount of cleaning water or takes a long time to clean. Another problem is that it requires a device to detoxify the exhausted ozone, which requires a great deal of cost and effort.

The present invention solves the above-mentioned problems of the prior art, easily removes impurities attached to articles in a short time, reduces the amount of liquid used for cleaning and purifying articles, and solves the problem of pollution. , maintain high yields without compromising quality, prevent contamination of products, make them sanitary,
It is an object of the present invention to provide a cleaning and purifying device for articles that can improve purity.

[Means for Solving the Problems] In order to achieve the above-mentioned problems, the present invention provides a concentrated ozone water production device that dissolves highly concentrated ozone gas in water to produce highly concentrated ozonated water, and a relatively dirt-free ozone water production device. A sterile water production device that produces sterile water by oxidizing and sterilizing it by the action of ultraviolet rays and ozone without flowing a small amount of water, and supplying the ozone discharged during the production of highly concentrated ozone water to the sterile water production device. and a means for supplying highly concentrated ozonated water produced by the concentrated ozone water production equipment and sterile water produced by the sterile water production equipment to an article washing septic tank. Clean and purify.

Further, a means for filtering the sterile water produced by the sterile water production apparatus is provided.

Furthermore, a sand filtration device and an activated carbon filtration device arranged in series are used as sterile water filtration means.

[Function] In the present invention, ozone water with a high concentration is supplied from a thick ozone water production device that dissolves ozone scum with a concentration of 1 ppm in water to produce ozone water with a high concentration of 10+ng/1 or more. By using it to clean and purify items, it can quickly break down proteins and fats and oils attached to items.
Solubilize and remove.

In addition, ozone sterilizes and kills microorganisms such as bacteria and algae, as well as viruses.
It inactivates, decomposes odorous substances such as mercaptan, diosmin, and 2-methylisoborneol, detoxifies harmful substances such as triheromethane and trichloroethylene, and decomposes odor substances such as mercaptan, diosmin, and 2-methylisoborneol.
By converting high-molecular substances such as proteins into low-molecular weight substances, it is possible to improve their affinity for wood, solubility, biodegradability, etc.

In addition, while the ozone discharged during the production of the highly concentrated ozone water is suctioned and dissolved into the flowing water,
The action of ultraviolet rays and ozone decomposes ozone to generate highly active nascent oxygen, which oxidizes and sterilizes impurities in the water, producing sterile water with a high degree of hygiene and safety.

In addition, by filtering the sterile water produced by the sterile water production equipment, minute suspended solids contained in the sterile water are removed.
Aim to improve the quality of washed items.

The above effect is increased by performing the filtration using a sand filtration device and an activated carbon filtration device arranged in series.

In addition, when products are washed and purified using highly concentrated ozonated water in a short period of time, and when producing highly concentrated ozonated water using the Toatsu ozonated water manufacturing equipment, the discharged ozone is sent to the sterile water manufacturing equipment. By washing the items again with the sterile water produced by the sterile water, the total amount of washing water is reduced, and when producing highly concentrated ozone water, the emitted ozone is effectively used and ozone detoxification equipment is installed. Close if unnecessary.

[Example] Embodiments of the present invention will be described in detail below based on the drawings.

In the figure, 1 is a concentrated ozone water production device, and an ozone generator 2 (not shown) is equipped with an oxygen-containing gas supply device.
It is composed of a gas phase ozone monitor 3, a high concentration ozone gas mixer 4, an ozone dissolution reaction device 5, an ozone water circulation pump 6, a liquid phase ozone monitor 7, and an ozone water quantitative supply device M8. Equipped with

The ozone generator 2 is equipped with a silent discharge type ozone generator (not shown), and the ozone generated by the ozone generator 2 is sent to a high concentration ozone scum mixer 4, and then circulated by an ozone water circulation pump 56. Water is dissolved in the ozone dissolution reactor 5, and highly concentrated ozone water is produced through this circulation. Sterile water, which will be described later, is replenished into the above-mentioned circulating water via the three-way switching valve 9.

Further, ozone sent to a gas phase ozone monitor 3 to detect the concentration of ozone generated by the ozone generator 2 is sent to a sterile water production device 10, which will be described later.

The highly concentrated ozonated water, which is obtained as described above and circulated by the ozonated water circulation pump 6, is passed through the valve 11, the ozonated water quantitative supply device 8, and the valve 12 to produce, for example, an article for cleaning and purifying milled rice with a yield of 70%. The product is sent to the cleaning and purifying device 13, where proteins, fats, etc. adhering to the product are decomposed, made soluble, and removed, and sterilized. Note that prior to cleaning with highly concentrated ozonated water, preliminary cleaning with purified water such as sterile water is effective for uniformly cleaning with ozonated water in a short time.

The wastewater discharged from the article washing and purifying device 13 is passed through a wastewater treatment device 14 equipped with a sludge treatment device (not shown) to a valve 15.
is discharged through.

This wastewater is decomposed and made into low-molecular weight substances such as proteins and oils attached to the products by highly concentrated ozonated water, so the subsequent biological oxidation treatment of the wastewater becomes extremely easy. By treating the excess sludge generated from the wastewater treatment with the above-mentioned highly concentrated ozone water, the excess sludge will be coagulated and
It can also greatly improve the dehydration effect.

In addition, 16 is a valve provided between the ozone dissolution reaction device 5 and the liquid phase ozone monitor 7, and 17 is a valve that is used to transfer ozone discharged from the liquid phase ozone monitor 7 to the sterile water production device 10, which will be described later. It is designed to be used for

The sterile water production device 10 includes a water circulation pump 18, a discharge ozone mixer 19, a water tank 20, an ultraviolet lamp 21 that mainly generates ultraviolet light of 253.7 nm, a protection tube 22 made of transparent quartz, a casing 23, and the above-mentioned concentrated ozone. A liquid flow path 24 formed between the casing 23 and the protection tube 22 for supplying ozone discharged or supplied from the water production device l
, a sand filtration device 25 filled with theolite, a receiving tank 26, an activated carbon filtration device 27, and a receiving tank 28.

A part of the ozone generated by the ozone generator 2 of the concentrated ozone water production device 1, the ozone discharged from the gas phase ozone monitor 3, and the ozone discharged from the ozone dissolution reaction device 5 are transferred to an ozone concentration regulator 29. and, if necessary, mixed with air indicated as A, the discharge ozone mixer 19
sent to.

The circulating water supplied from the water receiving tank 20 is sent to the discharge ozone mixer 19 by the water circulation pump 18, and mixed with ozone-containing gas to produce sterile water. Note that B is makeup water that replenishes the water tank 20 with relatively clean water such as underground water or industrial water. 33 is a valve.

The ozone supplied from the discharge ozone mixer 19 is suction-mixed with the water flowing into the fluid passage 24, and is rapidly decomposed by the action of ultraviolet rays generated by the ultraviolet lamp 21, producing nascent oxygen.

The water flowing through the fluid passage 24 is sterilized and purified by this nascent oxygen and ultraviolet rays with a wavelength of 253.7 mm, and this water is circulated between the large-capacity receiving tank 20 and the above-mentioned water via the three-way switching valve 30. sand filter device 25 via a three-way switching valve 30;
It is sent to the above-mentioned article washing and purifying device 13 via the receiving tank 26 and the valve 31. On the other hand, from the receiving tank 26, the water is sent to an activated carbon filtration device 27, where it is filtered to obtain sterile water that does not contain ozone and does not contain even the slightest suspended matter, which is extremely suitable as cleaning water.

The sterile water is sent from the receiving tank 28 to the article washing and purifying device 13 via the Harutsu 32', where the articles washed with highly concentrated ozone water are rinsed and finished washed to completely remove the ozone remaining in the articles. Remove. The sterile water in the water tank 20 is directly supplied to the article washing and purifying device 1 via the pulp 34.
You can also send it to 3.

In addition, sterile water that has been sterilized and purified by the action of ozone and ultraviolet rays should be used before washing items with highly concentrated ozone water.
It can be used as a pre-washing liquid for articles without going through a filtration process.

Further, although not shown, an ion exchange device, an ultrafiltration membrane device, and a reverse osmosis membrane device may be provided as necessary.

[Effects of the Invention] The article cleaning and purifying apparatus of the present invention has the following excellent effects.

(1) Concentrated ozonated water with a high ozone concentration that has extremely strong oxidizing and sterilizing power removes impurities attached to and bonded to items within a few seconds.
It can be decomposed, modified, and sterilized in a short period of a few minutes, and the quality of the product can be improved with a high yield by decolorizing, deodorizing, bleaching, and refining the product without damaging or deteriorating the product itself.

(2) Since sterile water produced using a combination of ultraviolet rays and ozone is used as raw water for concentrated ozonated water and pre-wash water, there is no loss of ozone consumed by oxidation of impurities caused by service water.

(3) In sterile water, free chlorine is decomposed due to the sensitization effect of ultraviolet rays, resulting in the formation of harmful organic chlorine compounds and odor, and soluble iron and manganese are insoluble salts. By processing the water with a ceolite-filled sand filter, it is possible to easily produce water with very little iron and no detectable manganese.Furthermore, by processing this water with an activated carbon filter, it can be used for rinsing items. You can obtain high-purity water that can be used as finishing wash water and water for diluting and filling the product itself. Furthermore, extremely high quality pure water can be produced by treating it with a water purifier. In this way, when the apparatus of the present invention is used, sterile water of various purity can be sequentially produced with low load and low cost as required.

(4) There is no need for waste ozone treatment, the ozone generated can be used effectively, and the load on the amount and quality of wastewater is reduced, making it more economical than conventional purification methods.

[Brief explanation of the drawing]

The drawing is a circuit diagram for explaining the article cleaning and purification apparatus of the present invention, in which 1 is a concentrated ozone water production device, 2 is an ozone generator, 3 is a gas phase ozone monitor, and 4 is a high concentration ozone gas mixer. , 5 is an ozone dissolution reactor stirrup, 6 is an ozone water circulation pump, 7 is a liquid phase ozone monitor, 8 is an ozone water constant supply device, 9 is a three-way switching valve, 11 is a sterile water production device, 11゜12 is Harz, 13 14 is an article washing purification device, 14 is a wastewater treatment device, 15, 16, 17 are valves, 18 is a water circulation pump, 19 is a discharge ozone mixer, 20 is a water tank, 21 is an ultraviolet lamp, 22 is a protection tube, 23 is casing, 24
is a fluid passage, 25 is a sand filtration device, 26 is a receiving tank, 27 is an activated carbon filtration device, 28 is a receiving tank, 29 is an ozone concentration regulator,
30 is a three-way switching valve, and 31, 32, 33, and 34 are Harz.

Claims (3)

[Claims] (1) Concentrated ozone water production equipment that produces highly concentrated ozone water by dissolving highly concentrated ozone gas in water, and sterile water that is oxidized and sterilized by the action of ultraviolet rays and ozone while flowing relatively clean water. a sterile water production device for producing sterile water; An apparatus for cleaning and purifying articles, comprising means for supplying sterile water produced by the water production apparatus to an article washing and septic tank. (2) The apparatus for cleaning and purifying articles according to claim 1, further comprising means for filtering the sterile water produced by the sterile water production apparatus. (3) The article cleaning and purifying apparatus according to claim 2, wherein the means for filtering the sterile water comprises a sand filter device and an activated carbon filter device arranged in series.