JP2006205138A - Washing device, washing method, washing plant and washing process, using purified water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing device, a washing method, a washing plant and a washing process, using purified water, which nearly completely remove mercury from glass cullets and the like using an ultrasonic washing, and which further enable a waste water to be treated simply and ensure a safety during the process using only purified water for a washing water. <P>SOLUTION: The washing device comprising a first washing section 100 and a second washing section 200 disposed at the rear of the first washing section 100 and a transfer means capable of transferring the glass cullets to the washing section 200 from the washing section 100 further comprises a filtering means 400 for recovering and filtering the waste water used at the first washing section 100 and the second washing section 200 to separate to a purified water and a disposable water, the purified water being fed to the first washing section 100 and the second washing section 200. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cleaning apparatus and a cleaning method for cleaning a glass cullet of a waste fluorescent tube, crushed metal or crushed plastic, and further to a glass cullet of a waste fluorescent tube, a crushed metal, and the glass cullet. The present invention relates to a cleaning processing plant and a cleaning processing method for recyclable mercury.

  Glass cullet of waste fluorescent tube obtained by crushing the glass part of waste fluorescent tube has harmful substances such as mercury and fluorescent powder that are harmful to the human body. It will cause pollution.

In addition, the glass cullet of the waste fluorescent tube is made of high-quality glass, and it is desirable to recycle it for effective use of resources. However, as mentioned above, the glass cullet contains mercury, fluorescent powder, etc. harmful to the human body. Since the harmful substances adhere and remain, the glass cullet cannot be recycled as it is.

  Here, in order to dispose of or recycle the glass cullet of the waste fluorescent tube, it is necessary to remove mercury, fluorescent powder, etc. adhering to the glass cullet. As the removal method, the dry method and the wet method are known. It has been. In addition, Air Pollution Control Act (mercury concentration of waste gas in air is 0.04 ppm or less), Soil Contamination Countermeasures Act (mercury concentration in soil is 0.005 mg / kg or less), Water Pollution Control Act (in wastewater underwater) Mercury concentration is 0.0005 mg / kg or less), etc., the mercury residual concentration regarding wastes and the like is currently strictly limited, and it is necessary to satisfy the standards of these laws.

We also recycle mercury, fluorescent powder, etc. removed from the glass cullet of waste fluorescent tubes from the viewpoint of effective use of resources and the prevention of pollution caused by the disposal of substances harmful to the human body as waste. It is desirable.

  Here, in the dry method, the glass cullet of the waste fluorescent tube obtained by crushing is heated to vaporize mercury and the like, and the vaporized mercury is adsorbed with activated carbon and the like to remove the mercury and the like from the glass cullet. Is the method.

  Further, the wet method is a method of removing mercury or the like from the glass cullet by washing the glass cullet of the waste fluorescent tube obtained by crushing with a washing liquid.

  For example, in Patent Document 1, as a cleaning device using a wet method, a hopper that guides a waste fluorescent lamp fragment to the above device is provided at one end of a rotary cleaning device that rotates in a horizontal direction, and further moves within the device. In order to wash the crushed pieces with water, the water conduit and the crushed pieces after washing with water are inserted, and a conduit for introducing a drug that elutes mercury adhering to the chloro complex ions is inserted. None, there is disclosed a cleaning apparatus used for waste fluorescent lamp processing in which a body-like filtration part for discharging the liquid after cleaning is provided on the body of the apparatus, and a plurality of stirring blades are attached to the inner surface of the body.

Japanese Patent Publication No. 03-5874 (Claims)

  However, in the dry method described above, it is difficult to take out the adsorbed mercury, etc., and it is generally difficult to recycle mercury because the activated carbon adsorbed mercury etc. is hardened and disposed of with cement etc. There is a problem that the vaporized mercury may be scattered.

  In addition, in the invention described in Patent Document 1, there is an inconvenience that when the elution inspection is performed on a washed waste fluorescent lamp fragment using only water as washing water, the mercury concentration becomes high. Furthermore, the mercury concentration does not meet the above-mentioned standard of the law.

  Furthermore, in the invention described in Patent Document 1, as shown in the Examples, when the elution inspection is performed on a waste fluorescent lamp fragment that has been cleaned using a chemical solution and water as a cleaning liquid, the mercury concentration decreases, but the processing of the cleaning liquid after cleaning is complicated. Furthermore, there is a disadvantage that there is a problem regarding safety during cleaning due to the drug solution. Moreover, it is unclear whether the extracted mercury and fluorescent powder can be recycled.

  The present invention has been made in view of the above points, and its first object is to treat the glass cullet of a waste fluorescent tube by a wet method, while compensating for the disadvantages of the dry method, using ultrasonic cleaning. By cleaning the glass cullet, harmful substances such as mercury are almost completely removed from the glass cullet. Furthermore, cleaning water is simplified by using only pure water, and safety during processing is ensured. Furthermore, another object of the present invention is to provide a cleaning apparatus, a cleaning method, a cleaning processing plant, and a cleaning processing method using pure water, which can completely recycle glass cullet, fluorescent powder, mercury, and the like of waste fluorescent tubes. In addition to the glass cullet, for the same purpose, a cleaning apparatus, a cleaning method, a cleaning processing plant, and a cleaning processing method using pure water in which the object to be cleaned is crushed metal with mercury or the like attached thereto are provided. It is in.

Furthermore, the second object of the present invention is not limited to the glass cullet, but substantially completely removes substances adhering to crushed metal or crushed plastic, such as heavy metal adhering to crushed metal. Furthermore, another object of the present invention is to provide a cleaning apparatus and a cleaning method that simplify processing of cleaning water by using only pure water as cleaning water.

In order to solve the above-mentioned problem, the cleaning device according to claim 1 includes a first cleaning unit that cleans the glass cullet of the waste fluorescent tube, and a second cleaning unit disposed behind the first cleaning unit, and further the glass The cullet is a cleaning device including a moving means capable of moving from the first cleaning unit to the second cleaning unit,
The first cleaning unit is installed in the cleaning tank and a cleaning tank into which the glass cullet is placed in order to separate and remove most harmful substances by ultrasonically cleaning the glass cullet using pure water as cleaning water. At least the cleaning tank, the ultrasonic oscillation means, and the pure water supply among an ultrasonic oscillation means, a pure water supply means for supplying pure water to the cleaning tank, and a stirring means for stirring the glass cullet Means and
The second cleaning section uses pure water as cleaning water to separate and remove residual harmful substances adhering to the glass cullet, and a rotary drum into which the glass cullet is charged and pure water installed in the rotary drum. A jetting means for jetting by ultrasonic waves or jetting as high pressure water,
Further, the cleaning device collects the cleaning water used in the first cleaning unit and the second cleaning unit and separates it into pure water and waste liquid by filtration, and the pure water is separated into the first cleaning unit and the waste water. A filtering means for supplying to the second cleaning unit is provided.

  In order to solve the above-mentioned problem, the cleaning device according to claim 2 is the cleaning device using the pure water according to claim 1, wherein the second cleaning unit ejects the pure water as cleaning water by ultrasonic waves. Alternatively, a conduit provided with a spout to be ejected as high-pressure water, an ultrasonic oscillation device or a high-pressure pump provided in the conduit, and a spiral rotating screw having an inner surface into which the conduit provided with the spout is introduced It comprises a mesh-like rotating drum provided with blades, and a body capable of collecting washing water from the rotating drum.

  In order to solve the above problem, a cleaning device according to claim 3 is a cleaning device using pure water according to claim 1 or 2, wherein the filtering means includes a filtering device using a reverse osmosis membrane. It is a feature.

In order to solve the above problem, a cleaning device according to claim 4 is a cleaning device using pure water according to claim 1, 2, or 3, wherein the first cleaning section includes a first cleaning tank and a second cleaning device. A cleaning tank, and further comprising a moving means capable of moving the glass cullet from the first cleaning tank to the second cleaning tank,
The first cleaning tank includes at least one of an ultrasonic oscillator and an air outlet, and pure water supply means for supplying pure water as cleaning water,
The second cleaning tank includes at least one of an ultrasonic oscillation device and an air outlet, and pure water supply means using pure water as cleaning water,
At least one of the first cleaning tank and the second cleaning tank is provided with a stirring device as necessary together with an ultrasonic oscillator.

  In order to solve the above-mentioned problem, a cleaning apparatus according to claim 5 is a cleaning apparatus using pure water according to claim 1, 2, or 3, wherein the temperature of pure water in the first cleaning section is 4 ° C. From 5 to 5 ° C., the temperature of pure water in the second cleaning section is 4 to 10 ° C., and the frequency of ultrasonic waves in the first cleaning section varies between 50 kHz and 300 kHz. The frequency of the ultrasonic wave in the second cleaning unit satisfies any one of changing between 300 kHz and 1000 kHz.

  In order to solve the above-mentioned problem, a cleaning apparatus according to claim 6 is a cleaning apparatus using pure water according to claim 4, wherein the temperature of pure water in the first cleaning tank and the second cleaning tank is 4 The temperature of pure water in the second cleaning section is 4 ° C to 10 ° C, the frequency of ultrasonic waves in the first cleaning tank varies between 50 kHz and 300 kHz, The frequency of ultrasonic waves in the second cleaning tank changes at 50 kHz or lower or 300 kHz or higher, or changes between 50 kHz and 300 kHz, and the frequency of ultrasonic waves in the second cleaning section changes between 300 kHz and 1000 kHz. It is characterized by satisfying any one of the following.

  In order to solve the above-mentioned problems, a cleaning processing plant using pure water according to claim 7 is a cleaning processing plant for cleaning a crushed metal to which mercury or the like adheres and a glass cullet of a waste fluorescent tube. 7. The cleaning apparatus according to claim 1 and at least one of a lead removal apparatus and a mercury extraction apparatus for separating and recovering at least mercury among mercury, fluorescent powder, and lead that can be recycled from waste liquid discharged from the cleaning apparatus. And a mercury extraction device.

  In order to solve the above-mentioned problem, a cleaning apparatus according to claim 8 is a cleaning apparatus using pure water according to claim 1, 2, 3, 4, 5 or 6, and is crushed metal or crushed. It is characterized by washing plastic or the like.

In order to solve the above problem, the cleaning method using pure water according to claim 9 is a cleaning method for crushed metal, crushed plastic, glass cullet of waste fluorescent tube, etc.
Performing at least ultrasonic cleaning of ultrasonic cleaning and bubbling cleaning for the glass cullet and the like with pure water as cleaning water;
Washing the glass cullet after ultrasonic cleaning with pure water as a cleaning water, and performing ultrasonic bubble cleaning or high-pressure water cleaning, and at least ultrasonic cleaning of the ultrasonic cleaning and bubbling cleaning, After collecting the washing water used in the sonic bubble washing or the high-pressure water washing, it is filtered by a filtration device equipped with a reverse osmosis membrane, separated into pure water and waste liquid, and the pure water is further subjected to the ultrasonic washing and It comprises a step of supplying at least ultrasonic cleaning of bubbling cleaning and cleaning water used for the ultrasonic bubble cleaning or the high-pressure water cleaning.

  In order to solve the above-mentioned problem, a cleaning method according to claim 10 is a cleaning method using pure water according to claim 9, wherein the temperature of pure water in the ultrasonic cleaning and the bubbling cleaning is from 4 ° C. The temperature of pure water in the ultrasonic bubble cleaning and the high pressure water cleaning is 4 ° C. to 10 ° C., and the frequency of ultrasonic waves in the ultrasonic cleaning varies between 50 kHz and 300 kHz. In addition, the frequency of the ultrasonic wave in the ultrasonic bubble cleaning satisfies any one of changing between 300 kHz and 1000 kHz.

In order to solve the above problem, the cleaning method according to claim 11 is a method for cleaning a crushed metal to which mercury or the like is attached and a glass cullet of a waste fluorescent tube,
Performing at least ultrasonic cleaning of ultrasonic cleaning and bubbling cleaning for the glass cullet and the like with pure water as cleaning water;
A step of performing ultrasonic bubble cleaning or high-pressure water cleaning on the glass cullet after the ultrasonic cleaning using pure water as cleaning water, and
After collecting the washing water used in at least the ultrasonic washing and the ultrasonic bubble washing or the high-pressure water washing of the ultrasonic washing and bubbling washing, it is filtered by a filtration device equipped with a reverse osmosis membrane, Separating into water and waste liquid, and further supplying the pure water as cleaning water used for at least the ultrasonic cleaning of the ultrasonic cleaning and bubbling cleaning, the ultrasonic bubble cleaning or the high-pressure water cleaning, It is characterized by comprising a step of taking out lead from a waste liquid so as to be recyclable using a lead removing device as needed, and taking out at least mercury from mercury and fluorescent powder so as to be recyclable by a mercury extraction device. .

  In order to solve the above-mentioned problem, a cleaning processing method according to claim 12 is a cleaning processing method using pure water according to claim 11, wherein the temperature of the pure water in the ultrasonic cleaning and the bubbling cleaning is 4 The temperature of pure water in the ultrasonic bubble cleaning and the high pressure water cleaning is 4 ° C. to 10 ° C., and the frequency of ultrasonic waves in the ultrasonic cleaning is between 50 kHz and 300 kHz. The frequency of the ultrasonic wave in the ultrasonic bubble cleaning satisfies any one of changing between 300 kHz and 1000 kHz.

  According to the inventions of claims 1, 2 and 9, since the glass cullet of the waste fluorescent tube is washed by a wet method, mercury does not scatter, so that the drawbacks of the dry method can be compensated. Furthermore, since the glass cullet is ultrasonically cleaned with pure water, mercury, fluorescent powder, and lead adhering to the glass cullet can be almost completely removed, and ultrasonic bubble cleaning or high pressure is performed with pure water. Since it is washed with water, mercury, fluorescent powder, and lead remaining on and reattached to the glass cullet can be almost completely removed. For this reason, it is possible to achieve a cleaning effect that is the same as or higher than that when a chemical solution is used as cleaning water, and also satisfies the conditions permitted as waste or the like of the above law. Furthermore, by using only pure water as the cleaning water, it is possible to facilitate the processing of the cleaning water after use, and to perform cleaning and processing with safety and security. Moreover, since the used wash water is filtered, it can be reused as wash water (pure water).

  According to the third, ninth and eleventh aspects of the invention, since the reverse osmosis membrane is used, the filtration is thorough and the pure water filtered and taken out can be reused, and the waste water is treated because the pure water and the waste are completely separated. It becomes easy.

  According to the invention described in claim 4, since the first cleaning section is divided into two tanks and bubbling cleaning is performed, the cleaning effect can be further enhanced.

  According to the invention described in claims 5, 6, 10 and 12, the cleaning effect can be further enhanced by performing the cleaning under the conditions described in claims 5, 6, 10 and 12.

  According to the seventh and eleventh aspects of the present invention, glass cullet or metal, mercury, fluorescent powder, and lead are separated and collected in a recyclable manner, so that the glass cullet of the waste fluorescent tube can be completely recycled.

  According to the invention described in claim 8 or 9, the present invention can be used not only for glass cullet but also for crushed plastic and crushed metal.

  Hereinafter, the best mode for carrying out the present invention (first embodiment) will be described with reference to the drawings. First, the glass cullet of the waste fluorescent tube, with the glass cullet with mercury and fluorescent powder attached (the portion that tightens about 95% of the fluorescent tube) and the glass cullet with mercury, fluorescent powder and lead attached (from the electrode of the fluorescent tube) The case of processing the glass cullet to which mercury and fluorescent powder are attached will be described.

  First, the cleaning treatment plant 1 will be described with reference to FIG. FIG. 1 is a schematic block diagram of an example of a cleaning processing plant 1 according to the present embodiment.

  As shown in FIG. 1, the cleaning processing plant 1 according to this embodiment includes a cleaning device 10 and a mercury extraction device 20. The cleaning treatment plant 1 enables complete recycling of mercury, fluorescent powder, and glass cullet of the waste fluorescent tube after cleaning.

  The cleaning device 10 includes a first cleaning unit 100, a second cleaning unit 200, a waste water tank 300, a filtration device 400, and a water storage tank 500 (see FIG. 1). Furthermore, the 1st washing | cleaning part 100 is provided with the 1st washing tank 101 and the 2nd washing tank 102 (refer FIG. 1). The cleaning device 10, the first cleaning unit 100, and the second cleaning unit 200 will be described in detail later. Further, the number of cleaning tanks such as the first cleaning tank 101 provided in the first cleaning unit 100 can be changed as appropriate, and will be described in detail in the description of the first cleaning unit 100.

  The glass cullet obtained by crushing the waste fluorescent tube is first put into the first cleaning unit 100, cleaned, and carried to the second cleaning unit 200. Specifically, the glass cullet is put into the first cleaning tank 101, cleaned, transported to the second cleaning tank 102, cleaned, and then cleaned in the second cleaning section 200 (see FIG. 1).

  The glass cullet cleaned by the first cleaning unit 100 and the second cleaning unit 200 is almost completely removed of mercury and fluorescent powder adhering to the glass cullet, and is discharged as a cleaned glass cullet (FIG. 1). See), and the glass cullet after recycling can be recycled. When the glass cullet is put into the first cleaning tank 101 by a suitable moving means (not shown) such as a belt conveyor, the second cleaning tank 102 and the second cleaning tank are transferred from the first cleaning tank 101. It can move from 102 to the second cleaning unit 200 and is discharged as the cleaned glass cullet.

The glass cullet of the waste fluorescent tube put into the first cleaning unit 100 is obtained by crushing the waste fluorescent tube by a suitable means and taking out only the glass cullet.

  For cleaning performed in the first cleaning tank 101, the second cleaning tank 102, and the second cleaning unit 200, pure water (in the present invention, pure water includes pure water and ultrapure water) is used. The pure water has conduits provided between the first cleaning tank 101 and the water storage tank 500, between the second cleaning tank 102 and the water storage tank 500, and between the second cleaning unit 200 and the water storage tank 500, respectively. Each is supplied from the street water storage tank 500 (see FIG. 1).

Further, the cleaning water after cleaning (water after cleaning) performed in each of the first cleaning tank 101, the second cleaning tank 102, and the second cleaning unit 200 is between the first cleaning tank 101 and the waste water tank 300. It is transported and stored in the waste water tank 300 through conduits provided between the second cleaning tank 102 and the waste water tank 300 and between the second cleaning unit 200 and the waste water tank 300 (see FIG. 1). Mercury and fluorescent powder removed from the glass cullet are mixed in the water after washing.

  The washed water stored in the waste water tank 300 passes through a conduit provided between the waste water tank 300 and the filtration device 400, is transported to the filtration device 400, is filtered, and is separated into pure water and waste liquid (FIG. 1). reference). The pure water passes through a conduit provided between the filtration device 400 and the water storage tank 500, is transported to the water storage tank 500 and stored therein, and is appropriately stored in each of the first cleaning tank 101, the second cleaning tank 102, and the second cleaning unit 200. It is supplied and used as cleaning water (see FIG. 1).

  On the other hand, the waste liquid discharged from the filtration device 400 is a liquid on a sludge containing fluorescent powder and mercury, which passes through a conduit provided between the filtration device 400 and the mercury extraction device 20 and passes through the conduit. 20, moisture is evaporated by the mercury extraction device 20, and fluorescent powder and mercury are separated and extracted, and these are discharged from the mercury extraction device 20 and collected as recyclable fluorescent powder and mercury.

  The pure water, the post-wash water, and the waste liquid are transported by suitable means such as a pump (not shown) installed in a conduit or the like. Further, pure water is supplied from the water storage tank 500 to the first cleaning tank 101, the second cleaning tank 102, and the second cleaning unit 200, respectively, at the time of cleaning. The timing, the amount of pure water, and the like are manually operated or controlled by a control unit (not shown) provided in the cleaning device 10, the water storage tank 500, or the like.

  Furthermore, the washed water that is transported from the waste water tank 300 to the filtration device 400 is transported from the waste water tank 300 to the filtration device 400 when a certain amount of the washed water has accumulated in the waste water tank 300. Carried to. This is also operated manually or controlled by a control unit (not shown) provided in the wastewater tank 300, the filtration device 400, or the like.

  The filtration device 400 is realized by a suitable device capable of separating the washed water supplied from the waste water tank 300 into a waste liquid containing fluorescent powder and mercury and pure water. For example, a reverse osmosis membrane method is used. (RO method) is realized by a filtration device.

  The reverse osmosis membrane type filtration device includes, for example, a filtration device equipped with a prefilter, activated carbon and a reverse osmosis membrane, a filtration filter, a carbon filter, a membrane (reverse osmosis membrane) and a carbon post filter. is there.

  By the reverse osmosis membrane type filtration device, the waste liquid on the sludge containing pure water, fluorescent powder and mercury is obtained from the washed water supplied from the waste water tank 300. By removing by the above washing, impurities other than mercury and fluorescent powder (dust attached to the waste fluorescent tube) contained in the water after washing are removed by an activated carbon filter or the like.

  The mercury extraction device 20 is realized by, for example, a suitable device capable of separating and collecting the waste liquid on the sludge into recyclable mercury and fluorescent powder. For example, “MRT Distiller” and “MRT Standard” manufactured by MRT are used. Distiller "(MRT standard distiller).

  By using the “MRT Distiller”, high-purity recyclable mercury can be extracted from the waste liquid on the sludge, and recyclable fluorescent powder can also be obtained.

  As described above, recyclable glass cullet, mercury, and fluorescent powder can be obtained from the glass cullet to which mercury and fluorescent powder are attached. Further, the water after washing is filtered through a filtration device to produce pure water, which is supplied again to the first washing tank 101, the second washing tank 102 and the second washing unit 200 as a washing water, and further from the filtration apparatus 400 by the mercury extraction device 20. By treating the discharged waste liquid, mercury and fluorescent powder are not discharged to the outside, and since the treatment method is a wet method, mercury is not scattered during the treatment.

  The water storage tank 500 and the waste water tank 300 are not necessarily required. The washed water may be directly supplied to the filtration device 400, and the filtration device 400 may provide pure water that has been directly filtered to the first washing tank 101, the second washing tank 102, and the second washing unit 200.

  Next, the cleaning device 10, the first cleaning unit 100, and the second cleaning unit 200 will be described with reference to FIGS. FIG. 2 is a schematic view of a cleaning apparatus 10 provided in the cleaning processing plant 1. 3 is an example of a schematic configuration of the first cleaning unit 100 included in the cleaning device 10, and FIG. 4 is an example of a schematic configuration of the second cleaning unit 200 included in the cleaning device 10. 5 is a schematic cross-sectional view taken along the line AA ′ in FIG.

  As shown in FIG. 2, the cleaning device 10 includes a first cleaning unit 100 and a second cleaning unit 200, and the first cleaning unit 100 includes a first cleaning tank 101 and a second cleaning tank 102. Further, the cleaning device 10 includes an insertion port 11, a connection port 12, a belt conveyor 13, a conveyor motor 15, and an operation panel 16.

  The glass cullet of the waste fluorescent tube input from the input port 11 is cleaned by the first cleaning unit 100. Then, the cleaned glass cullet passes through the connection port 12 and is carried to the second cleaning unit 200 where it is further cleaned and discharged to the belt conveyor 13. The cleaned glass cullet is discharged by the belt conveyor 13 to the strainer. 17 and collected in a drum can 90.

  A drainage valve 14 is attached to the belt conveyor 13 (see FIG. 2), and a conduit (not shown) from the drainage valve 14 to the water storage tank 500 is provided to remove moisture attached to the cleaned glass cullet on the belt conveyor 13. You may collect | recover and supply to the water storage tank 500 with the provided conduit | pipe.

  Further, a drying device for drying the cleaned glass cullet may be attached to the belt conveyor 13 (not shown), and the cleaned glass cullet may be dried and then collected in the drum can 90. The operation panel 16 is provided for manually or automatically controlling the cleaning device 10.

As described above, the cleaning device 10 includes the waste water tank 300, the filtration device 400, the water storage tank 500, a conduit, and the like, which are omitted in FIG.

  As shown in FIG. 3, the first cleaning unit 100 includes a first cleaning tank 101 and a second cleaning tank 102. The shapes of the first cleaning tank 101 and the second cleaning tank 102 are not particularly limited, but are suitable for the implementation of the present invention. And the 1st washing tank 101 is the glass 50 of the waste fluorescent tube thrown in from the conduit | pipe 50 for supplying the pure water supplied from the water storage tank 500 to this 1st washing tank 101, and the insertion port 11. A belt conveyor 110 for transporting to the cleaning tank 102, an ultrasonic oscillator 115, and a drain valve 55 are provided.

  The ultrasonic oscillator 115 is installed, for example, on the bottom surface or side surface of the first cleaning tank 101, and where and how many the ultrasonic oscillators 115 are installed can be appropriately selected. In FIG. 3, it is installed on the side surface of the first cleaning tank 101 (see FIG. 3). By subjecting the glass cullet of the waste fluorescent tube to ultrasonic cleaning, mercury and fluorescent powder adhering to the glass cullet are almost peeled and removed (separated and removed). Therefore, the glass cullet is almost cleaned in the first cleaning tank 101. It will be done.

  The belt conveyor 110 is provided to carry the glass cullet of the waste fluorescent tube charged from the charging port 11 to the second cleaning tank 102, but the shape is not limited. When the belt conveyor 110 having the shape as shown in FIG. 3 is provided, a protrusion as shown in FIG. 3 is provided on the belt portion so that the glass cullet of the waste fluorescent tube can be carried in the vertical direction. In this case, the glass cullet of the waste fluorescent tube is stored between the protrusion and the belt at the acute angle portion side, and the glass cullet can be conveyed in the vertical direction. The belt portion of the belt conveyor 110 proceeds in the direction indicated by the arrow in FIG.

  Further, it is desirable to prevent the glass cullet of the waste fluorescent tube from falling below the belt conveyor 110 by adjusting the width of the belt conveyor 110 to the width of the first cleaning tank 101, but other methods (for example, described later) The glass cullet may be prevented from falling under the belt conveyor 110 (particularly, when a stirring means such as an air jet port described later is provided).

  Further, when the drain valve 55 is opened, the washed water passes through the conduit from the drain valve 55 and is carried to the waste water tank 300.

  The cleaning process for the glass cullet of the waste fluorescent tube in the first cleaning unit 101 is performed as follows, for example.

  When a fixed amount of waste fluorescent tube glass cullet (for example, about 20 kg) is input from the input port 11, a fixed amount of pure water is supplied as cleaning water from the conduit 50, and the ultrasonic wave is constant by the ultrasonic oscillator 115. Oscillate for a time (eg, 2 to 5 minutes), and the glass cullet is ultrasonically cleaned. After the ultrasonic cleaning, the cleaning water is discharged from the drain valve 55 as the cleaning water. Then, it is conveyed to the 2nd washing tank 102 by the belt conveyor 110. FIG.

  The temperature of pure water of the cleaning water can be determined as appropriate, but the cleaning effect can be enhanced by setting the temperature to 4 ° C. to 5 ° C., for example. In order to adjust the temperature of the pure water, for example, a temperature adjusting device such as a cooling device (not shown) is provided in the middle of the water storage tank 500 or the conduit 50 to control the water temperature.

In ultrasonic cleaning, the frequency of ultrasonic waves oscillated by the ultrasonic oscillator 115 can be determined as appropriate. For example, cleaning is performed at a frequency of 300 kHz. For example, if the ultrasonic cleaning is performed while changing the frequency between 50 kHz and 300 kHz, the cleaning effect is enhanced. The washing time is also appropriately determined depending on the amount of glass cullet to be washed.

  An ultrasonic oscillator 115 is provided on the bottom surface of the first cleaning tank 101, and the glass cullet (240 g) of the waste fluorescent tube is adhered to the glass cullet by ultrasonic cleaning for about 3 minutes while changing between 50 kHz and 300 kHz. Mercury and fluorescent powder are almost peeled off (separated and removed).

  The second cleaning tank 102 is connected to a pipe 60 for supplying pure water supplied from the water storage tank 500 to the second cleaning tank 102 and a glass cullet of a waste fluorescent tube carried from the first cleaning tank. A belt conveyor 120 for conveying the glass cullet, an air outlet 126 and a drain valve 65 as stirring means for stirring the glass cullet in water.

  The air outlet 126 is installed, for example, on the bottom surface and / or the side surface of the second cleaning tank 102, and where and how many the air outlets 126 are installed can be appropriately selected. In FIG. 3, it is installed on the bottom surface and side surface of the second cleaning tank 102 (see FIG. 3). By blowing out air from the air outlet 126, the glass cullet of the waste fluorescent tube is agitated in the washing water to perform bubbling washing. Thereby, it becomes possible to further remove mercury and fluorescent powder adhering to the glass cullet cleaned in the first cleaning tank 101. Further, mercury and fluorescent powder peeled off from the glass cullet of the waste fluorescent tube in the first cleaning tank 101 may reattach to the glass cullet, and this can be removed.

  Although the belt conveyor 120 is provided in order to carry the glass cullet of the waste fluorescent tube carried from the 1st washing tank 101 to the connection port 12, it does not ask | require about a shape. When the belt conveyor 120 having the shape as shown in FIG. 3 is provided, for example, a protrusion as shown in FIG. 3 is provided on the belt portion so that the glass cullet of the waste fluorescent tube can be carried in the vertical direction. In this case, the glass cullet of the waste fluorescent tube is stored between the protrusion and the belt at the acute angle portion side, and the glass cullet can be conveyed in the vertical direction. The belt portion of the belt conveyor 120 proceeds in the direction indicated by the arrow in FIG. Furthermore, it is desirable that the belt of the belt conveyor 120 be made into a net shape in order to enhance the bubbling cleaning effect.

  Moreover, it is necessary to prevent the glass cullet of the waste fluorescent tube from falling below the belt conveyor 120 by adjusting the width of the belt conveyor 120 to the width of the second cleaning tank 102. This is because the glass cullet is stirred by the bubbling cleaning. Moreover, you may prevent that this glass cullet falls under the belt conveyor 120 by another method.

For example, as shown in FIG. 3, the glass 127 is inclined by the inclination of the guide 127 by attaching the guide 127 to the belt conveyor 120 so as to be inclined on the three side surfaces of the second cleaning tank 102 where the belt conveyor 120 is not provided. It will fall on the belt conveyor 120.

  In addition, for example, as shown in FIG. 3, the glass cullet of the waste fluorescent tube in which the mesh basket 125 is transported from the first cleaning tank 101 is introduced, and the bottom of the bottom of the mesh basket is provided on the belt conveyor. Thus, the glass cullet thrown into the mesh basket 125 is subjected to bubbling cleaning, and the glass cullet falls onto the belt conveyor 120 by opening the bottom of the bottom surface. Note that the guide 127 and the mesh basket 125 may also be provided in the first cleaning tank 101.

  When the drain valve 65 is opened, the washed water passes through the conduit from the drain valve 65 and is carried to the waste water tank 300.

  The cleaning process for the glass cullet of the waste fluorescent tube in the second cleaning tank 102 is performed as follows, for example.

  When the glass cullet of the waste fluorescent tube is carried from the first cleaning tank 101, a certain amount of pure water is supplied as cleaning water from the conduit 60, and air is further supplied from the air outlet 126 for a certain time (for example, 2 to 5 minutes). The glass cullet is bubbled and washed. Thereafter, the wash water is discharged from the drain valve 65 as post-wash water. Thereafter, the belt is conveyed to the connection port 12 by the belt conveyor 120.

  The temperature of the pure water of the cleaning water can be determined as appropriate, but is set to 4 ° C. to 5 ° C., for example. In order to adjust the temperature of the pure water, for example, a temperature adjusting device such as a cooling device (not shown) is provided in the middle of the water storage tank 500 or the conduit 60 to control the water temperature.

Further, the amount of air ejected from the air ejection port 126 and the cleaning time can be determined as appropriate during the bubbling cleaning.

  The first cleaning unit 100 is not limited to the case where the first cleaning tank 101 and the second cleaning tank 102 are provided as described above.

  The first cleaning tank 101 includes at least one of an ultrasonic oscillator and an air outlet, and the second cleaning tank 102 includes at least one of an ultrasonic oscillator and an air outlet, At least one of the one cleaning tank 101 and the second cleaning tank 102 may be provided with a stirring device as necessary together with the ultrasonic oscillator. For example, an air outlet similar to the second cleaning layer 102 may be appropriately provided in the first cleaning tank 101, and bubbling cleaning may be performed simultaneously with ultrasonic cleaning. Further, the ultrasonic cleaning device similar to the first cleaning tank 101 may be provided in the second cleaning tank 102 as appropriate, and ultrasonic cleaning may be performed simultaneously with the bubbling cleaning. Furthermore, instead of the air jet 126 in the second cleaning tank 102, an ultrasonic oscillation device similar to that of the first cleaning tank 101 may be provided as appropriate, and only ultrasonic cleaning may be performed. What is necessary is just to determine suitably the installation location and quantity of an ultrasonic oscillation apparatus and an air jet nozzle. Further, instead of the air outlet 126, other stirring means such as a stirring device is provided in the first cleaning tank 101 and / or the second cleaning tank 102 (not shown, the installation location is appropriately determined), and the glass cullet The cleaning effect can be enhanced by performing ultrasonic cleaning while stirring in water. Further, an ultrasonic oscillation device may be provided in any one of the first cleaning tank 101 and the second cleaning tank 102. The stirring device is a stirring means other than the stirring means by the air outlet 126, and is a device for stirring the glass cullet in water. In addition, when a stirrer is provided, it is desirable to provide a reticulated basket 125 or guide 127 similar to the air outlet 126 in the cleaning tank.

  When performing ultrasonic cleaning in both the first cleaning tank 101 and the second cleaning tank 102, for example, the frequency of ultrasonic waves used in the first cleaning tank 101 is changed between 50 kHz and 300 kHz, and the second cleaning tank 102 The frequency is a constant frequency of 50 kHz or less or 300 kHz or more, or a frequency that changes at 50 kHz or less or 300 kHz or more. Further, for example, the frequency of the ultrasonic wave used in the first cleaning tank 101 is set to a constant frequency of 50 kHz or less or 300 kHz or more, or a frequency changing at 50 kHz or less or 300 kHz or more. In the second cleaning tank 102, the frequency is changed from 50 kHz to 300 kHz. Vary between. Further, for example, both the frequencies of the ultrasonic waves used in the first cleaning tank 101 and the second cleaning tank 102 are changed between 50 kHz and 300 kHz. Furthermore, when performing ultrasonic cleaning only in the second cleaning tank 102, it is possible to further enhance the cleaning effect by changing the frequency of the ultrasonic wave between 50 kHz and 300 kHz. In these cases, by adding bubbling cleaning in the first cleaning tank 101 and / or the second cleaning tank 102, the cleaning effect can be further enhanced. Further, for example, the temperature of pure water as washing water is set to 4 ° C. to 5 ° C., and the washing time is 3 to 5 minutes for 20 kg of glass cullet of the waste fluorescent tube. In addition, the frequency of the ultrasonic wave oscillated in the first cleaning tank 101 and the second cleaning tank 102, the temperature of pure water, and the cleaning time are not limited to the above examples, and can be determined as appropriate.

  Further, the first cleaning unit 100 may include one cleaning tank or three or more cleaning tanks similar to the first cleaning tank 101 and the second cleaning tank 102, instead of the two cleaning tanks as described above. good. However, it is necessary to provide at least one cleaning tank capable of performing ultrasonic cleaning.

  When one cleaning tank is provided in the first cleaning unit 100, an ultrasonic oscillation device is provided in the cleaning tank, for example, on the bottom surface, and the frequency of ultrasonic waves used for ultrasonic cleaning is changed between 50 kHz and 300 kHz, for example. The cleaning effect can be enhanced. In addition, the temperature of pure water, which is cleaning water, is set to 4 ° C. to 5 ° C., for example. Further, the cleaning effect can be enhanced by providing an air outlet and performing bubbling cleaning. Further, a cleaning device may be provided in place of the air outlet, and the glass cullet may be stirred in water to enhance the cleaning effect. For example, the washing time is 2 to 5 minutes for 20 kg of glass cullet of a waste fluorescent tube. In addition, the frequency of the ultrasonic wave used, the temperature of pure water, and the cleaning time are not limited to the above examples, and can be determined as appropriate. The cleaning time varies depending on the amount of glass cullet.

  When three or more cleaning tanks are provided in the first cleaning unit 100, an ultrasonic oscillator is provided on each of the cleaning tanks, for example, on the bottom surface, and the ultrasonic frequency used for ultrasonic cleaning is set, for example, for the first cleaning tank The cleaning effect is enhanced by setting the temperature of pure water as cleaning water to, for example, 4 ° C. to 5 ° C. from 3000 kHz to 5000 kHz, the second cleaning bath from 800 kHz to 1000 kHz, and the third cleaning bath to around 300 kHz. I can do it. Furthermore, the frequency of the ultrasonic wave is changed. Further, the cleaning effect can be enhanced by providing an air outlet and performing bubbling cleaning. Further, a cleaning device may be provided in place of the air outlet, and the glass cullet may be stirred in water to enhance the cleaning effect. The washing time is 2 to 5 minutes for 20 kg of glass cullet of the waste fluorescent tube. In addition, the frequency of the ultrasonic wave used, the temperature of pure water, and the cleaning time are not limited to the above examples, and can be determined as appropriate. The cleaning time varies depending on the amount of glass cullet.

  As shown in FIGS. 4 and 5, the second cleaning unit 200 is rotatable with a rotating screw blade 114 for transporting the glass cullet cleaned by the first cleaning unit 100 introduced from the connection port 12 to the discharge port 205. A rotating drum 111, a rotating drum receiving shaft 112, a rotating drum gear 113, a body 150, a conduit 70, a drain valve 75, and a discharge port 205 are provided. The mercury and fluorescent powder adhering to the glass cullet of the waste fluorescent tube in the first cleaning unit 100 are almost completely peeled and removed (separated and removed), but the second cleaning unit 200 remains in the glass cullet. The mercury and fluorescent powder are peeled and removed (separated and removed), and the peeled mercury and fluorescent powder may be reattached to the glass cullet. That is, the glass cleaning is almost completely cleaned by the second cleaning unit 200.

  The body 150 forms the body of the second cleaning unit 200. The shape of the body 150 is not limited to a substantially cylindrical shape as shown in FIGS. 4 and 5, and the inside of the body 150 is a cavity that can accommodate the rotary drum 111 therein. The shape may be a polygonal prism such as a triangular prism or a quadrangular prism. 4 and 5, the body 150 and the rotating drum 111 are provided coaxially with the body 150 as an outer cylinder and the rotating drum 111 as an inner cylinder.

  The shape of the rotating drum 111 is not limited to a substantially cylindrical shape (see FIGS. 4 and 5) as in the case of the body 150, and the rotating drum 111 is provided inside the body 150. Here, the rotating drum 111 is provided inside the body 150 so as to be rotatable using a rotating drum bearing shaft 112 and a rotating drum gear 113. The number of rotations of the rotating drum 111 can be set as appropriate in addition to, for example, 3 to 5 rotations per minute. Further, when the rotating drum 111 rotates, the internal glass cullet is turned upside down (stirred).

  In addition, one or a plurality of spiral rotating screw blades 114 are provided on the inner wall of the rotating drum 111 from one end on the connection port 12 side to the other end on the discharge port 205 side (see FIGS. 4 and 5). The rotating screw blade 114 is provided for the purpose of enabling the glass cullet introduced by rotating the rotating drum 111 to be carried from the inlet 12 side to the outlet 205 side.

  Further, the rotating drum 111 has a mesh shape so that the cleaning water is discharged to the outside of the rotating drum 111, whereby the cleaning water used for cleaning flows to the lower part of the rotating drum 111, and the lower part inside the body 150. Accumulate in. Wash water stored in the lower part of the body 150 is carried to the waste water tank 300 by a drain valve 75 and a conduit at any time or at regular intervals.

  The conduit 70 is introduced into the rotary drum 111 from one end on the connection port 12 side of the rotary drum 111 (see FIGS. 4 and 5). And the conduit | pipe 70 is equipped with the jet nozzle which injects the wash water (pure water) supplied from the water storage tank 500 (refer FIG. 4).

  Further, an ultrasonic generator or a high-pressure pump is provided in the middle of the conduit 70 (not shown), and ultrasonic waves or pressure is applied to the cleaning water (pure water) supplied from the conduit 70, and the jet provided in the conduit 70 is provided. It is ejected from the outlet as ultrasonic cleaning water or high-pressure water. That is, the glass cullet thrown from the connection port 12 is cleaned in the rotating drum 111 by ultrasonic bubble cleaning or high-pressure water cleaning. In addition, although the water temperature of ultrasonic cleaning water can be determined suitably, for example, the cleaning effect effect increases by setting it to 4 to 10 degreeC. In order to lower the temperature of the pure water, for example, a cooling device (not shown) or the like is provided in the middle of the water storage tank 500 or the conduit 70 to control the water temperature. Further, the cleaning effect is improved by changing the frequency of the ultrasonic wave, for example, between 300 kHz and 1000 kHz, but the frequency can be appropriately determined.

  The cleaning process for the glass cullet of the waste fluorescent tube in the second cleaning unit 200 is performed as follows, for example.

  When the glass cullet is introduced into the rotary drum 111 from the connection port 12 while the rotary drum 111 is rotating, the glass cullet is moved from the connection port 12 side toward the discharge port 205 by the rotary screw blade 114. It moves while being turned upside down (stirred). During the movement, the glass cullet is subjected to ultrasonic bubble cleaning or high pressure water cleaning with ultrasonic cleaning water or high pressure water ejected from a spout provided in the conduit 70. For this reason, it becomes possible to prevent mercury and fluorescent powder from reattaching to the glass cullet. The glass cullet is discharged from the discharge port 205 after ultrasonic bubble cleaning or high-pressure water cleaning. The washing water is stored in the lower part of the body 150 and is carried to the waste water tank 300 by a discharge valve 75 and a conduit (not shown) connected thereto.

  Next, there is a glass cullet for waste fluorescent tubes with mercury and fluorescent powder adhering to them, but with glass cullet (the portion that tightens about 95% of fluorescent tubes) and glass cullet with fluorescent, fluorescent powder and lead attached (fluorescent tubes) The case where the glass cullet to which mercury, fluorescent powder and lead are attached is treated.

  In this case, in FIG. 1, a lead removal device is provided between the filtration device 400 and the mercury extraction device 20, lead is removed from the waste liquid discharged from the filtration device 400, and the waste liquid from which the lead has been removed is conveyed to the mercury extraction device 20. It will be necessary. A general lead removal device is used. Other devices and the like are the same as in the case of processing the glass cullet to which mercury and fluorescent powder are adhered, and thus the description thereof is omitted.

  Next, another embodiment (second embodiment) for carrying out the present invention will be described. In this case, the object to be cleaned is a crushed plastic (eg, hard vinyl chloride, soft vinyl chloride, polyethylene, film, etc.) or a crushed metal, etc., and a substance (eg, dust) attached to the plastic. The purpose is to remove heavy metals (such as mercury) attached to the metal.

  The cleaning device is the same as that in the first embodiment and can be cleaned, and the same cleaning effect as in the first embodiment can be obtained. However, the waste liquid discharged from the filtration device 400 is included in the waste liquid. It is appropriately treated depending on the components. The cleaning time, the temperature of pure water, the frequency of ultrasonic waves, etc. can be determined as appropriate. About the metal which mercury etc. adhered, the thing similar to the said washing | cleaning apparatus and a washing process plant can be used.

It is a schematic block diagram about an example of a washing processing plant. It is the schematic of the washing | cleaning apparatus with which a washing processing plant is provided. It is an example of schematic structure of the 1st washing | cleaning part with which a washing | cleaning apparatus is provided. It is an example of schematic structure of the 2nd washing | cleaning part with which a washing | cleaning apparatus is provided. It is an AA 'line schematic sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cleaning processing plant 10 Cleaning apparatus 11 Input port 12 Connection port 13 Conveyor belt 14 Drain valve 15 Conveyor motor 16 Operation panel 17 Strainer 20 Mercury extraction device 50 Conduit 55 Drain valve 60 Conduit 65 Drain valve 70 Conduit 75 Drain valve 90 Drum can 100 One cleaning section 101 First cleaning tank 102 Second cleaning tank 110 Belt conveyor 111 Rotating drum 112 Rotating drum receiving shaft 113 Rotating drum gear 114 Rotating screw blade 115 Ultrasonic oscillator 120 Belt conveyor 125 Reticulated basket 126 Air outlet 127 Guide 150 Body 200 Second cleaning unit 205 Discharge port 300 Waste water tank 400 Filtration device 500 Water storage tank

Claims (12)

A first cleaning unit that cleans the glass cullet of the waste fluorescent tube and a second cleaning unit disposed behind the first cleaning unit, and the glass cullet is movable from the first cleaning unit to the second cleaning unit. A cleaning device comprising means,
The first cleaning unit is installed in the cleaning tank and a cleaning tank into which the glass cullet is placed in order to separate and remove most harmful substances by ultrasonically cleaning the glass cullet using pure water as cleaning water. At least the cleaning tank, the ultrasonic oscillation means, and the pure water supply of ultrasonic oscillation means, pure water supply means for supplying pure water to the cleaning tank, and stirring means for stirring the glass cullet Means and
The second cleaning section uses pure water as cleaning water to separate and remove residual harmful substances adhering to the glass cullet, and a rotary drum into which the glass cullet is charged and pure water installed in the rotary drum. A jetting means for jetting by ultrasonic waves or jetting as high pressure water,
Further, the cleaning device collects the cleaning water used in the first cleaning unit and the second cleaning unit and separates it into pure water and waste liquid by filtration, and the pure water is separated into the first cleaning unit and the waste water. A cleaning apparatus using pure water, comprising a filtering means for supplying to the second cleaning section.   The second cleaning unit includes a conduit provided with a spout for ejecting pure water as cleaning water with ultrasonic waves or spouted as high-pressure water, an ultrasonic oscillation device or a high-pressure pump provided in the conduit, and the spout A mesh-shaped rotating drum provided with a spiral-shaped rotating screw blade on the inner surface thereof, and a body capable of collecting washing water from the rotating drum. A cleaning apparatus using the pure water according to 1.   3. The cleaning apparatus using pure water according to claim 1, wherein the filtering means includes a filtering device using a reverse osmosis membrane. The first cleaning section includes a first cleaning tank and a second cleaning tank, and further includes a moving means capable of moving the glass cullet from the first cleaning tank to the second cleaning tank,
The first cleaning tank includes at least one of an ultrasonic oscillator and an air outlet, and pure water supply means for supplying pure water as cleaning water,
The second cleaning tank includes at least one of an ultrasonic oscillator and an air outlet, and pure water supply means for supplying pure water as cleaning water,
The cleaning using pure water according to claim 1, 2 or 3, wherein at least one of the first cleaning tank and the second cleaning tank is provided with a stirring device as necessary together with an ultrasonic oscillator. apparatus.   The temperature of pure water in the first cleaning unit is 4 ° C. to 5 ° C., the temperature of pure water in the second cleaning unit is 4 ° C. to 10 ° C., and the temperature in the first cleaning unit The frequency of the sonic wave satisfies any one of changing from 50 kHz to 300 kHz, and changing the frequency of the ultrasonic wave in the second cleaning unit from 300 kHz to 1000 kHz. Item 4. A cleaning apparatus using pure water according to item 1, 2 or 3.   The temperature of pure water in the first cleaning tank and the second cleaning tank is 4 ° C to 5 ° C, the temperature of pure water in the second cleaning section is 4 ° C to 10 ° C, The frequency of ultrasonic waves in the cleaning tank varies between 50 kHz and 300 kHz, and the frequency of ultrasonic waves in the second cleaning tank varies between 50 kHz and below or 300 kHz or above, or between 50 kHz and 300 kHz, The cleaning apparatus using pure water according to claim 4, wherein the frequency of the ultrasonic wave in the second cleaning section satisfies any one of changing between 300 kHz and 1000 kHz.   A cleaning processing plant for cleaning a crushed metal to which mercury or the like is adhered and a glass cullet of a waste fluorescent tube, wherein the cleaning device is recycled from the waste liquid discharged by the cleaning device. A cleaning treatment plant using pure water, comprising at least a mercury extraction device among a lead removal device and a mercury extraction device in order to separate and collect at least mercury among possible mercury, fluorescent powder, and lead. 7. The cleaning apparatus using pure water according to claim 1, 2, 3, 4, 5 or 6, wherein the crushed metal or crushed plastic is washed. A cleaning method for crushed metal, crushed plastic or glass cullet of waste fluorescent tube, etc.
Performing at least ultrasonic cleaning of ultrasonic cleaning and bubbling cleaning for the glass cullet and the like with pure water as cleaning water;
Washing the glass cullet after ultrasonic cleaning with pure water as a cleaning water, and performing ultrasonic bubble cleaning or high-pressure water cleaning, and at least ultrasonic cleaning of the ultrasonic cleaning and bubbling cleaning, After collecting the washing water used in the sonic bubble washing or the high-pressure water washing, it is filtered by a filtration device equipped with a reverse osmosis membrane, separated into pure water and waste liquid, and the pure water is further subjected to the ultrasonic washing and A cleaning method using pure water, comprising a step of supplying at least ultrasonic cleaning of bubbling cleaning and cleaning water used for the ultrasonic bubble cleaning or the high-pressure water cleaning.   The temperature of pure water in the ultrasonic cleaning and bubbling cleaning is 4 ° C. to 5 ° C., and the temperature of pure water in the ultrasonic bubble cleaning and high pressure water cleaning is 4 ° C. to 10 ° C., The ultrasonic frequency in the ultrasonic cleaning changes between 50 kHz and 300 kHz, and the ultrasonic frequency in the ultrasonic bubble cleaning changes between 300 kHz and 1000 kHz. The cleaning method using pure water according to claim 9, wherein the cleaning method is satisfied. A method for cleaning crushed metal and mercury glass cullet attached with mercury,
Performing at least ultrasonic cleaning of ultrasonic cleaning and bubbling cleaning for the glass cullet and the like with pure water as cleaning water;
A step of performing ultrasonic bubble cleaning or high-pressure water cleaning on the glass cullet after the ultrasonic cleaning using pure water as cleaning water, and
After collecting the cleaning water used in at least the ultrasonic cleaning and the ultrasonic bubble cleaning or the high-pressure water cleaning of the ultrasonic cleaning and bubbling cleaning, it is filtered by a filtration device equipped with a reverse osmosis membrane. Separating into water and waste liquid, and further supplying the pure water as cleaning water used for at least the ultrasonic cleaning of the ultrasonic cleaning and bubbling cleaning, the ultrasonic bubble cleaning or the high-pressure water cleaning, Pure water comprising a step of taking out lead from a waste liquid so as to be recyclable using a lead removing device as needed, and taking out at least mercury from mercury and fluorescent powder so as to be recyclable by a mercury extraction device. Cleaning method used. The temperature of pure water in the ultrasonic cleaning and bubbling cleaning is 4 ° C. to 5 ° C., and the temperature of pure water in the ultrasonic bubble cleaning and high pressure water cleaning is 4 ° C. to 10 ° C., The ultrasonic frequency in the ultrasonic cleaning changes between 50 kHz and 300 kHz, and the ultrasonic frequency in the ultrasonic bubble cleaning changes between 300 kHz and 1000 kHz. The cleaning method using pure water according to claim 11, wherein the cleaning method is satisfied.

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