JP5097577B2 - Washing and drying collection device - Google Patents

Description

  The present invention relates to a washing / drying collecting apparatus for washing / drying clothes, and more particularly to a washing / drying apparatus that does not require a detergent.

  In general, when washing and drying clothes used in power plants such as nuclear power plants (hereinafter referred to as laundry), a liquid or liquid is put into the laundry dryer to remove sweat and dirt attached to the laundry. After washing with powder detergent, it is rinsed, dehydrated and dried.

  By the way, for laundry wastewater generated when washing clothes used in nuclear power plants, it is necessary to perform evaporation concentration treatment to reduce the volume of waste liquid. Bubbles resulting from the influence of (particularly the surfactant) are generated, and the level control of the concentrator becomes extremely unstable due to the bubbles.

  In order to prevent such problems, at present, the amount of detergent to be introduced is about 1/100 of the amount recommended by the detergent manufacturer, and as a result, the laundry is not easily cleaned.

On the other hand, when washing / bleaching a laundry, a technique is known in which a hydrogen peroxide solution and ionic crystals are used, and the laundry is washed / bleached using so-called microbubbles ( For example, see Patent Document 1).
JP 2007-92207 A

  By the way, in a power plant such as a nuclear power plant, a worker such as an operator sweats a large amount of sweat, so that the laundry includes a lot of sweat and sebum. In the technique described in Patent Document 1, a hydrogen peroxide bleaching solution or the like is used in addition to microbubbles, and even though sweat and sebum contained in the laundry can be effectively removed, It is difficult to use again.

  Furthermore, since salt contained in sweat is dissolved in the laundry wastewater, it is necessary to efficiently remove the salt in order to reuse the laundry wastewater. In addition, if micro-microbubbles mixed during washing are contained in laundry wastewater, ozone and nitrogen in the laundry wastewater may react to produce nitric acid, which may have an unexpected adverse effect on piping. is there.

  Accordingly, the present invention is a laundry drying and collecting apparatus that does not adversely affect facilities such as piping without using detergent when washing / drying laundry such as clothes without reusing the washing drainage. The purpose is to provide.

  (1) The present invention provides a washing / drying machine for washing / drying the laundry, ozone generating means for generating ozone, microbubbles or nanobubbles containing the ozone, and the microbubbles or the washing water together with the washing water. Foam generating means for supplying the nanobubbles to the washing / drying machine, a drainage storage tank for temporarily storing washing drainage discharged from the washing / drying machine, and an ionic component contained in the washing drainage that receives the washing drainage from the drainage storage tank A reverse osmosis membrane means for removing water, a pump for sending the washing wastewater from the drainage storage tank to the reverse osmosis membrane means, and a foreign matter contained in the washing drainage disposed between the drainage storage tank and the pump. A filter device to be removed, the filter device being removable along the guide housing and a guide member disposed in the filter housing. A washing and drying collection device characterized by having an arranged filter.

  In the washing / drying collection apparatus according to (1), microbubbles or nanobubbles containing ozone are generated, and the microbubbles or nanobubbles are supplied to the washing dryer together with the washing water. The laundry can be washed and dried.

  In the laundry drying / collecting apparatus according to (1), the laundry wastewater discharged from the laundry dryer is temporarily stored in the wastewater storage tank, and the ionic components (for example, the wastewater discharged from the wastewater storage tank by the reverse osmosis membrane means (for example, , Sodium ions and chloride ions) can be removed, so that the permeated water that has permeated the reverse osmosis membrane means can be reused.

  Further, in the laundry drying and collecting apparatus according to (1), a filter device for removing foreign substances contained in the washing drainage is disposed between the drainage storage tank and the pump, and the filter device includes a filter housing, Since it has a guide member disposed in the filter housing and a filter disposed so as to be detachable along the guide member, the foreign matter flows into the pump as a result of the foreign matter being reliably removed by the filter. In addition, the filter can be easily cleaned.

  (2) In the laundry drying / collecting device according to (1), the filter housing includes a lid, and the guide member is disposed in a direction extending perpendicularly to the lid, and the filter When the device is installed along the guide member, the inside of the filter housing is partitioned into a first space connected to the drainage storage tank and a second space connected to the pump.

  In the washing / drying collection apparatus according to (2), the filter housing includes a lid portion, and the guide member is disposed in a direction extending perpendicularly to the lid portion. The filter can be attached and detached along the guide member.

  (3) The present invention is the washing / drying collecting apparatus according to (1) or (2), wherein the drainage storage tank is arranged behind the washing / drying machine, and the washing drainage is drained for a predetermined time. It is characterized by storing in a storage tank.

  In the washing / drying collecting apparatus according to (3), the drainage storage tank is disposed behind the washing / drying machine, and the laundry drainage is stored in the drainage storage tank for a predetermined time. Can be adjusted. Also, if the pre-defined time is longer than the time required for ozone decomposition, even if ozone remains in the laundry wastewater, ozone will be decomposed in the wastewater storage tank. Does not adversely affect the equipment.

  As described above, according to the present invention, when washing or drying laundry such as clothes, it is not necessary to use a detergent, it can be washed and dried well, and washing wastewater can be reused. it can. Furthermore, even if ozone remains in the washing waste water, there is an effect that the facilities such as piping are not adversely affected.

  Hereinafter, an example of a laundry drying collection device according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an example of a laundry drying collection apparatus according to an embodiment of the present invention. The illustrated washing / drying collection apparatus is used when washing and drying clothes (work clothes) worn by workers such as operators in a power plant such as a nuclear power plant. Can be used in the same manner when washing and drying work clothes worn by workers.

  In FIG. 1, a washing and drying collection device 10 includes an ozone generator 20, a foam generator 21, a washing water circulation pump (hereinafter simply referred to as a circulation pump) 22, a water tank 23, a washing dryer 24, an oxygen supply facility 25, and a drainage storage tank. 40, a reverse osmosis membrane pump 41, a reverse osmosis membrane device 42, and a filter device 43.

  The ozone generator 20 is connected to an air suction pipe 27 and an oxygen cylinder as an oxygen supply facility 25. When the air intake valve 33 provided in the air intake pipe 27 is opened, the air is taken into the ozone generator 20 through the air intake pipe 27, where ozone is generated from oxygen in the air. The generated ozone is supplied to the foam generating device 21 through the ozone supply pipe 26.

  By the way, when the concentration of nitrogen oxides in the atmosphere increases, hydrochloric acid may be generated in laundry wastewater described later by the action of nitrogen oxides and ozone. For this reason, when the nitrogen oxide concentration in the atmosphere exceeds a predetermined concentration, only oxygen is supplied from the aforementioned oxygen cylinder. For this purpose, an oxygen intake pipe 28 is connected between the atmospheric intake valve 33 of the atmospheric intake pipe 27 and the ozone generator 20, and an oxygen supply facility 25, that is, an oxygen cylinder is connected to the end of the oxygen intake pipe 28. Then, the air intake valve 33 is closed, the oxygen intake valve 34 disposed in the oxygen intake pipe 28 is opened, and oxygen is supplied from the oxygen cylinder to the ozone generator 20.

  The foam generating device 21 is disposed in the water tank 23, and this water tank 23 is used as a temporary storage tank when supplying washing water to the washing / drying machine 24. The circulation pump 22 is provided in a washing water supply pipe 38 that connects the washing / drying machine 24 and the foam generating device 21, takes in the washing water from the washing / drying machine 24, and supplies the washing water through the pressure reducing valve 35. 21 is pumped.

  As a result, ozone is sucked into the foam generating device 21 to generate so-called microbubbles or nanobubbles (hereinafter both are simply referred to as bubbles), which are supplied to the washing dryer 24 together with the washing water. In the washing / drying machine 24, the laundry to be washed is washed with the bubbles supplied together with the washing water. In these bubbles, the surface of the bubbles has a high activity, and dirt components can be adsorbed on the interface.

  The exhaust from the washing / drying machine 24 is supplied to the ozone supply pipe 26 through the ozone circulation pipe 37 in order to reuse the ozone contained in the exhaust. That is, an ozone circulation pipe 37 is disposed between the upper part of the washing / drying machine 24 and the ozone supply pipe 26, the exhaust valve 31 is opened, and the ozone supply valve provided on the ozone generator 20 side in the ozone supply pipe 26. When 32 is closed, the exhaust from the washing / drying machine 24 is guided to the ozone supply pipe 26, and the exhaust is supplied to the foam generator 21 as a bubble source.

  After the washing, the washing / drying machine 24 performs rinsing, and after the rinsing, the washing / drying machine 24 dehydrates the laundry, and then the laundry is dried. By the way, the washing wastewater is drained into a drainage storage tank 40 disposed behind the washing / drying machine 24. As a matter of course, salt that is one of the soil components is contained as ions in the washing waste water, and ozone may stay.

  As described above, the wastewater discharged from the washing / drying machine 24 is temporarily stored in the wastewater storage tank 40, so that the salinity concentration in the wastewater, which is different for each washing, can be adjusted to a constant concentration. When ozone stays, the time which the ozone decomposes into oxygen can be given.

  The washing wastewater staying in the drainage storage tank 40 is supplied to the reverse osmosis membrane device 42 via the washing drainage pipe 41 a by driving the reverse osmosis membrane pump 41. A reverse osmosis membrane valve 51 is disposed in the laundry drainage pipe 41a. When supplying the wastewater to the reverse osmosis membrane device 42, the reverse osmosis membrane valve 51 is opened and the reverse osmosis membrane pump 41 is driven. . As shown in the figure, a filter device 43 is disposed in front of the reverse osmosis membrane pump 41, and after the foreign matter contained in the washing wastewater is removed by the filter device 43, the washing wastewater is reverse osmosis. It is supplied to the membrane device 42.

  The reverse osmosis membrane device 42 includes a device housing 42a and a reverse osmosis membrane 42b disposed in the device housing 42a, and the inside of the device housing 42a is connected to the first chamber 42c by the reverse osmosis membrane 42b. It is separated from the second chamber 42d. The first chamber 42 c is connected to the concentrated water drain pipe 46, and the second chamber 42 d is connected to the permeated water supply pipe 45.

  The washing wastewater flows into the first chamber 42c, and the permeated water that has permeated through the reverse osmosis membrane 42b reaches the second chamber 42d. As described above, clothes to be washed such as work clothes worn at power plants such as nuclear power plants contain a large amount of sweat, so the laundry drainage inevitably contains a lot of sodium ions and chloride ions. Will be included. For this reason, sodium ions and chlorine ions are separated by the reverse osmosis membrane 42b, and the permeated water is permeated into the second chamber 42d. That is, sodium ions and chlorine ions remain in the first chamber 42c. Here, the washing wastewater remaining in the first chamber 42c is referred to as concentrated water.

  The concentrated water drain pipe 46 is provided with a concentrated water valve 54. When the concentrated water valve 54 is opened, the concentrated water is sent from the first chamber 42c to a waste water treatment facility (not shown). On the other hand, when the permeated water supply valve 53 provided in the permeated water supply pipe 45 is opened, the permeated water is supplied to the water tank 23 from the second chamber 42d through the permeated water supply pipe 45.

  In the permeate replenishment pipe 45, a permeate supply pipe 44 is disposed between the permeate replenishment valve 53 and the reverse osmosis membrane device 42, and the permeate supply valve 52 has a permeate supply valve 52. Is provided. If the permeate is supplied to the drainage storage tank 40 via the permeate supply pipe 44, the salinity concentration in the drainage storage tank 40 can be maintained within a predetermined range.

  Further, the permeated water is selectively supplied to the water tank 23 and the drainage storage tank 40, and when the permeated water is replenished to the water tank 23, the permeated water replenishment valve 53 is opened and the permeated water supply valve 52 is closed. On the other hand, when the permeate is supplied to the drainage storage tank 40, the permeate supply valve 52 is opened and the permeate replenishment valve 53 is closed.

  In this manner, the drainage storage tank 40 is disposed behind the washing / drying machine 24 and the wash drainage is temporarily stored therein, so that the salinity concentration in the wash drainage in the drainage storage tank 40 can be adjusted. Not only that, even if ozone remains in the washing waste water, the ozone is decomposed in the waste water storage tank 40 over time, so that the equipment such as piping is not adversely affected.

  Here, the structure of the filter device 43 will be described with reference to FIGS. 2 and 3.

  FIG. 2 is a perspective view showing a part of the filter device 43 cut away from the side. FIG. 3 is a perspective view showing a state in which the upper portion of the filter device 43 is opened. The filter device 43 has a substantially rectangular parallelepiped filter housing 43a. The filter housing 43a is connected to the drainage storage tank 40 by a washing drainage pipe 41a and to the reverse osmosis membrane pump 41.

  A guide frame body 43b is vertically disposed along the opening of the filter housing 43a in the filter housing 43a. The guide frame body 43b has a pair of guide members 431 and 432, and these guide members 431 and 432 are disposed along the inner surface of the side wall of the filter housing 43a facing each other. In the illustrated example, the guide members 431 and 432 are each formed with a pair of guide grooves extending along the longitudinal direction of the guide members 431 and 432.

  As shown in FIG. 3, the upper lid portion 433 of the filter housing 43a is attached to the filter housing 43a so as to be openable, and the filter 43c can be taken out by opening the upper lid portion 433. That is, when the filter 43c is disposed in the filter housing 43a, the filter 43c is inserted along the guide members 431 and 432. As described above, since a pair of guide grooves is formed in each guide member 431 and 432, in the illustrated example, the filter 43c is mounted in one layer or two layers.

  Further, when removing the filter 43c, the filter 43c may be pulled out along the guide members 431 and 432. When the filter 43c is inserted, the inside of the filter housing 43a is partitioned into the first space 43d and the second space 43e by the filter 43c, and the first space 43d is connected to the drainage storage tank 40, and the second space 43 e is connected to the reverse osmosis membrane pump 41.

  Therefore, the washing waste water from the waste water storage tank 40 flows into the first space 43d, and reaches the second space 43e through the filter 43c. At this time, the filter 43c removes foreign matters such as foreign matters contained in the washing drainage. Therefore, dust such as foreign matters does not flow into the reverse osmosis membrane pump 41, and problems such as failure of the reverse osmosis membrane pump 41 can be reliably prevented.

  Further, when cleaning the filter 43c, the filter 43c can be easily detached from the filter housing 43a by opening the upper cover 433 and pulling out the filter 43c along the guide members 431 and 432. Then, after cleaning the filter 43c, if the filter 43c is inserted along the guide members 431 and 432, the filter 43c can be easily attached to the filter housing 43a. In the illustrated example, the filter 43c is 30 mesh (30 holes having a diameter of about 0.5 mm per square inch).

It is a block diagram which shows the structure of an example of the washing-drying collection apparatus by embodiment of this invention. It is a perspective view which fractures | ruptures a part of filter apparatus shown in FIG. 1, and shows from a side surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Laundry drying collection apparatus 20 Ozone generator 21 Foam generator 22 Washing water circulation pump 23 Water tank 24 Wash dryer 25 Oxygen supply equipment 40 Drainage tank 41 Reverse osmosis membrane pump 42 Reverse osmosis membrane device 43 Filter device 43a Filter housing 43b Guide Frame body 431, 432 Guide member 433 Upper lid part 43c Filter

Claims (3)

A laundry dryer for washing and drying the laundry;
Ozone generating means for generating ozone;
Foam generating means for generating microbubbles or nanobubbles containing ozone and supplying the microbubbles or nanobubbles together with washing water to the washing dryer;
A drainage storage tank for temporarily storing the washing drainage discharged from the washing dryer;
Reverse osmosis membrane means for receiving the laundry wastewater from the wastewater storage tank and removing ionic components contained in the laundry wastewater;
A pump for sending the washing waste water from the waste water storage tank to the reverse osmosis membrane means;
A filter device disposed between the waste water storage tank and the pump, for removing foreign substances contained in the washing waste water;
The said filter apparatus has a filter housing | casing, the guide member arrange | positioned in this filter housing | casing, and the filter arrange | positioned along the said guide member so that attachment or detachment is possible, The washing-drying collection apparatus characterized by the above-mentioned.   The filter housing includes a lid portion, and the guide member is disposed in a direction extending perpendicularly to the lid portion. When the filter is installed along the guide member, the inside of the filter housing is the drainage storage tank. The laundry drying / collecting apparatus according to claim 1, wherein the laundry drying / collecting apparatus is partitioned into a first space connected to the second space and a second space connected to the pump.   The washing / drying collecting apparatus according to claim 1, wherein the drainage storage tank is disposed behind the washing / drying machine, and the washing drainage is stored in the drainage storage tank for a predetermined time.

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