JP2000189766A - Waste liquid recovering vessel and waste liquid treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a treated waste liq. to be transferred from a concentration tank and to heat the treated liq. into a solid and discard it. SOLUTION: A waste liq. recovering vessel 22 is used for the disposal of the waste liq. L of a photosensitive material processing. The vessel 22 is provided with a bottom plate to be heated by a panel heater 46. The waste processing liq. L filled between the bottom plate and a porous membrane 28 is heated by heating the bottom plate, only the vapor is permeated through the membrane 28, and hence the waste processing liq. L is gradually concentrated and solidified. Consequently, the waste processing liq. L need not be transferred from a tank, the disposable vessel 22 is delivered to a waste liq. dealer to complete disposal without spoiling clothes of operators.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste liquid recovery container used for disposing of a processing waste liquid obtained by processing a photosensitive material.

[0002]

2. Description of the Related Art In order to reduce the volume of processing waste liquid generated by the development of photosensitive materials such as photographic films and dispose of it, various methods have been used to efficiently and at low cost evaporate and concentrate water from processing waste liquid. (Japanese Patent Laid-Open No. 4-40)
No. 281, JP-A-7-209841).

[0003] However, all of the treatment techniques require a large-capacity concentration tank provided with a heat-generating portion and a heat-absorbing portion for concentrating the treatment waste liquid and collecting water. For this reason, the waste liquid processing apparatus becomes large in size, and it is difficult to provide the waste liquid processing apparatus in an automatic developing apparatus.

Further, it is necessary to transfer the concentrated processing waste liquid in the concentration tank to a recovery tank and entrust final disposal to a waste liquid supplier. However, at the time of this transfer, it is inconvenient to stain clothes with the processing waste liquid. was there.

[0005] On the other hand, considering the recovery efficiency, it is ideal to heat the treated waste liquid until it becomes solid. However, in the conventional waste liquid treatment apparatus, the chemicals adhere to the waste liquid and the concentration tank cannot be used. Concentration to a predetermined concentration was the limit.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to eliminate the necessity of transferring a processing waste liquid from a concentration tank and to perform heat treatment until the processing waste liquid becomes solid.

[0007]

According to the first aspect of the present invention, a waste liquid collection container for disposal is used for disposal of a processing waste liquid for a photosensitive material. This waste liquid collecting container has a bottom portion heated by the heating means. By heating the bottom part, the processing waste liquid accommodated between the bottom part and the gas permeable membrane is heated.

When the treatment waste liquid is heated, only the evaporated water passes through the gas permeable membrane, and the treatment waste liquid is gradually concentrated and solidified. As a result,
There is no need to transfer the treated waste liquid from the concentration tank, and the waste liquid collection container is covered with a gas permeable membrane for disposal. It does not pollute.

Further, since the processing waste liquid is concentrated until it solidifies, the volume of the processing waste liquid is reduced. For this reason, no storage space is required, and the frequency of outsourcing to waste liquid contractors is reduced.

[0010] According to the second aspect of the present invention, the bottom plate is heated by the heating means to heat the processing waste liquid, the peripheral wall is erected from the periphery of the bottom plate, and the opening is covered with the gas permeable membrane.
It is composed of

As described above, if the container has a tray shape,
Since the opening only needs to be covered with the gas permeable membrane, no special processing is required. Further, by hanging the gas permeable membrane toward the bottom plate, the processing waste liquid can be smoothly supplied into the waste liquid collecting container without providing an additional air vent mechanism. Further, by devising the gas permeable membrane to have flexibility or to make it bellows, an air vent mechanism for supplying the processing waste liquid becomes unnecessary.

According to the third aspect of the present invention, a waste liquid supply port through which a waste liquid pipe for supplying a processing waste liquid is detachably provided on the gas permeable membrane or the peripheral wall.

In this configuration, the waste liquid collecting container can be detached from the waste liquid pipe with a single touch, thereby facilitating the user's disposal of the treated waste liquid.

According to a fourth aspect of the present invention, there is provided a waste liquid processing apparatus for processing a processing liquid waste of a photosensitive material, comprising: a housing forming a closed space; a heating means disposed in the housing; Disposed, heated by the heating means, a waste liquid recovery container for disposal provided with a gas permeable membrane that allows only the vapor of the stored processing waste liquid to permeate, and a cooling means disposed on an upper part of the housing; It is characterized by having a circulating fan for generating a circulating flow from the gas permeable membrane to the cooling means, and a discharging means disposed below the cooling means and discharging collected water.

[0015]

1 to 3 show a schematic configuration of a waste liquid treatment apparatus using a waste liquid recovery container according to the present embodiment.

The waste liquid processing apparatus 10 is provided with a bleach-fixing tank 12 of a photosensitive material processing apparatus (not shown) and a waste liquid tank 16 for temporarily storing a processing waste liquid L obtained by processing a photographic film in a washing tank 14. I have.

At the bottom of the waste liquid tank 16, a waste liquid pipe 1 is provided.
The waste liquid L is sent to a waste liquid collecting container 22 by a waste liquid pump 20. The feed amount of the processing waste liquid L is controlled by the drive time of the waste liquid pump, and the amount of one-time feed is set according to the capacity of the waste liquid collection container 22. In the present embodiment, about 1 L (as a use range) Is 0.
For a waste liquid recovery container 22 of 5 to 10 L), the amount of one feed is 50 cc to 100 cc.

The collection timing of the waste liquid collection container 22 is calculated based on the number of times the waste liquid pump 20 has been fed.
Lights up.

On the other hand, as shown in FIG.
The second bottom plate 24 is made of a material having high thermal conductivity. As such a material, a metal material, an inorganic material, an organic material, and a composite material thereof are applied. As the metal material, stainless steel, titanium, nickel or the like having good corrosion resistance may be used.

The inorganic materials include aluminum nitride,
It is preferable to select a material containing silicon carbide, bromine nitride, beryllium oxide, or the like. In the case of an organic material, if it is a general-purpose resin such as PE or PP, or an engineering plastic such as PPO or PSF, or a composite material with the above-mentioned inorganic material, the material may have good thermal conductivity and corrosion resistance. Fluororesins, silicon resins, aramid resins, and the like are also excellent in heat resistance.

Around the bottom plate 24, a peripheral wall 26 is erected with a heat-resistant resin material to form a tray having a shallow bottom.
A handle 30 is provided on the side surface of the peripheral wall 26 so that it can be easily taken in and out.

On the other hand, the upper opening of the peripheral wall 26 is covered with a porous film 28 made of cellulose, polyamide, polysulfone, polyimide, polyolefin, fluororesin, silicon resin or the like. An enclosed space is formed. The distribution of the pores of the porous membrane 28 is set to an average of 0.1 μ / m ^{2 to} 0.2 μ / m ² , so that only the evaporated water in the treatment waste liquid L is transmitted.

The material of the porous membrane 28 of the present embodiment is
Therefore, the maximum value of the amount of permeated moisture is about 1 in 24 hours.
40kg / m^TwoIs used, but surface protection
Because of the lamination process, the actual transmission amount
Is about 70 kg / m in 24 hours ^TwoIt has become.

A connection pipe 32 made of resin is attached to the porous membrane 28. The connection pipe 32 has a joint 3 attached to a flexible tube 36.
8 are connected by one touch. The tube 36 is connected to the waste liquid pipe 18 via a check valve 34.

Further, as shown in FIG. 5, the porous membrane 28 is attached so as to hang down on the bottom plate 24 side.
When the processing waste liquid L is supplied from the connection pipe 32, the processing waste liquid L rises as the processing waste liquid L rises. As described above, by attaching the porous film 28 with slack, it is not necessary to bleed air.

In this embodiment, the connecting pipe 32 is provided on the porous membrane 28 side, but may be provided on the peripheral wall 26 side. This facilitates processing of the porous film 28. Further, the porous film 28 is not limited to a sheet-like one, and may be a bellows-like one as shown in FIG. The use of the bellows expansion / contraction function eliminates the need for air bleeding.

Further, the shape of the waste liquid collecting container is not limited to a box shape, and as shown in FIG. 7, a bag in which the above-described film body 40 containing a good heat conductive material and the porous film 28 are bonded together. The body 42 may be used, and the bag body 42 facilitates handling.

On the other hand, as shown in FIGS. 1 and 2, a surface heater 46 is disposed at the bottom of the housing 44 of the waste liquid treatment apparatus 10. On the surface heater 46, the waste liquid collecting container 2 loaded through the entrance 48 of the housing 44 is disposed.
2 is placed. The entrance 48 is opened and closed by a door 50.

A temperature sensor 52 for detecting the temperature of the vapor transmitted through the porous membrane 28 is provided on the side wall of the housing 44.
Are arranged. The temperature sensor 52 may be attached to the end of the waste liquid pipe to directly measure the waste liquid temperature.

The signal output from the temperature sensor 52 to the control unit controls the heating temperature of the surface heater 46 so that the temperature of the waste liquid L does not exceed 60 ° C.

This is because, when the temperature of the treatment waste liquid L is raised to 60 ° C. or higher, sulfites, thiosulfates and the like are decomposed to generate sulfurous gas and ammonium thiosulfate.

Further, a funnel-shaped tray 54 is provided above the surface heater 46, that is, above the ceiling wall of the housing 44. The condensing fin 5 is located above the receiving tray 54.
6 are arranged at predetermined intervals. This condensation fin 56
Is cooled in contact with the heat absorbing surfaces of a large number of Peltier elements 58, condenses the vapor that has passed through the porous membrane 28, and drops on the tray 54 as a recovery liquid.

On the heat radiation side of the Peltier element 58,
A cooling fan 60 is disposed, and radiates heat to the atmosphere,
The cooling effect is ensured.

A collection pipe 62 having a discharge port inclined downward is connected to the bottom of the receiving tray 54. With this collection pipe 62, the collection liquid collected in the receiving tray 54 is sent to the collection tank 64. The collection tank 64 is provided with a water supply pipe 68 in the washing tank 14 for washing the photographic film.
Connected by

The water supply pipe 68 is provided with a filtration device 70 and a recovered liquid pump 72. The filtration device 70 is provided with a filter containing activated clay and the like. The recovery liquid pump 72 removes the ammonia component from the recovery liquid sent from the recovery tank 64, so that the ammonia can be reused in the washing tank 14. In this embodiment, the recycling rate of the recovery liquid used in the washing tank, the developing tank, and the fixing tank is set to 60 to 80%.

On the other hand, on the side wall of the housing 44, a circulation fan 66 for generating a circulation flow in the housing 44 is arranged. The air flow sent from the circulation fan 66 passes through the surface of the porous film 28 to promote the generation of steam, and efficiently moves the steam to the condensing fins 56.

The air volume of the circulation fan 66 depends on the volume of the housing 44, but in the case of the housing 44 of the present embodiment (the housing volume is 5 L in a range of 2 to 10 L), the air volume is 0.1 to 1. 0.03 m ³ / min, preferably
It is 0.2 to 0.4 m ³ / min. The inner wall of the housing 44 is covered with a heat insulating material (not shown) to prevent dew condensation.

Next, the processing steps of the processing waste liquid L will be described.

The processing waste liquid L discharged from the bleach-fix processing tank 12 and the washing tank 14 is temporarily stored in a waste liquid tank 16.

The user opens the door 50, places the waste liquid collecting container 22 on the surface heater 46, and connects the connection pipe 32 and the joint 38 attached to the tube 36. In order to prevent the user from touching the processing waste liquid L as much as possible, an automatic connection mechanism for automatically connecting the connection pipe 32 and the joint 38 by opening and closing the door 50 may be provided. Here, when the reset switch is pressed, the control unit recognizes that a new waste liquid collecting container 22 has been set.

Next, the waste liquid pump 20 is driven for a predetermined time, and a predetermined amount of the processing waste liquid L is sent from the waste liquid tank 16 to the waste liquid collection container 22 through the waste liquid pipe 18. Here, the surface heater 46 is turned on, and the temperature of the processing waste liquid L is reduced to 60.
Heat while maintaining the temperature below ° C. In addition, without being limited to a direct heating means such as a surface heater, as shown in FIG.
And so on.

When the processing waste liquid L is heated, the porous membrane 28
, Only the vapor permeates, and the processing waste liquid L is gradually concentrated and solidified. Also, even if the vapor is evaporated in a state sealed with the porous membrane 28, the vapor is discharged through the porous membrane 28, so that the vapor is continuously generated inside the waste liquid collecting container 22,
Even if the temperature of the surface heater 46 is not increased, the evaporation efficiency of water does not decrease.

Next, when a predetermined time elapses after the surface heater 46 is turned on (before the vapor permeates from the porous film 28), the circulation fan 66, the Peltier element 58, and the cooling fan 60 are turned on to In addition to generating an airflow that sends the vapor that has passed through the porous membrane 28 to the condensing fins 56, the vapor is cooled by the condensing fins 56, and the collected liquid that has been condensed to form water droplets is collected in a tray 54.

The collected liquid collected in the receiving tray 54 is sent to a collection tank 64 by a collection pipe 62. Then, the recovered liquid stored in the recovery tank 64 is subjected to removal of the ammonia component by the filtration device 70, and the recovered liquid pump 72 is used to remove the washing tank 14.
Sent to

When the water is evaporated from the 100 L of the processing waste liquid L, the weight of the solid remaining in the waste liquid collecting container 22 becomes about 9 g. Therefore, for example, if the volume of the waste liquid collecting container 22 is 1 L, one process until the processing waste liquid L is solidified can be repeated 50 times in one waste liquid collecting container 22.

As a result, the processing waste liquid L solidified over several layers is stacked in a sandwich shape.
In the solidification processing of the first processing waste liquid L and the solidification processing of the final processing waste liquid L, a reduction in the processing capacity of about 10% is observed.
However, as compared with the conventional method of treating waste liquid by concentration, the treatment amount of the treated waste liquid L is remarkably improved, and the frequency of collecting the waste liquid collecting container is significantly reduced.

In the above-described process, the treated waste liquid L solidified in multiple layers in the waste liquid collecting container 22 is transferred to the housing 44.
From the wastewater collecting container 22 and passed to a processing company as it is. For this reason, unlike the related art, the user does not need to transfer the concentrated liquid, and thus does not stain the clothes.

In the present embodiment, the processing waste liquid L is heated by the surface heater 46. However, the Peltier element 58 is disposed at the center of the housing 44, and the waste liquid collecting container 22 is disposed on the heat radiation side of the Peltier element 58. A configuration for heating may be used. Thereby, energy can be used without waste.

In order to further increase the efficiency of evaporating water, a vibration device 82 such as a vibrator shown in FIG.
The waste liquid collecting container 22 may be shaken to break the film formed on the surface of the processing waste liquid L. Further, the solidification state of the processing waste liquid L may be detected by the sensor 84 using an ultrasonic wave, an electromagnetic wave, or the like, and the processing may be shifted to the next processing operation.

Further, as shown in FIG.
A duct 88 may be provided to feed a part of the wind into the waste liquid collecting container 22 to form a flow that stirs the surface of the processing waste liquid L. At this time, it is necessary to provide an opening / closing lid 90 on the porous film 28 and partially open the opening / closing lid 90. The opening / closing lid 90 is automatically closed by a fastener, a rubber band, a magnet, or the like by the opening / closing operation of the door 50. By doing so, the user is not bothered.

The test method for selecting the porous membrane 28 is based on the potassium acetate method (B-1) of JIS L1099.
Method).

[0052]

According to the present invention having the above construction, there is no need to transfer the processing waste liquid from the concentration tank, and the heat treatment can be performed until the processing waste liquid becomes solid. For this reason, the clothes of the user are not contaminated with the processing waste liquid, and the processing capacity of the processing waste liquid is increased as compared with the concentration, so that the frequency of collection by the waste liquid supplier is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a waste liquid processing apparatus in which a waste liquid collecting container according to the embodiment is set.

FIG. 2 is a side view showing a waste liquid processing apparatus in which a waste liquid recovery container according to the embodiment is set.

FIG. 3 is a block diagram of a waste liquid processing apparatus in which a waste liquid collection container according to the present embodiment is set.

FIG. 4 is a perspective view of a waste liquid collecting container according to the embodiment.

FIG. 5 is a perspective view of a waste liquid collecting container according to a modification.

FIG. 6 is a perspective view of a waste liquid collecting container according to a modification.

FIG. 7 is a perspective view of a waste liquid collecting container according to a modification.

FIG. 8 is a side view showing a modified example of the waste liquid treating apparatus in which the waste liquid collecting container according to the present embodiment is set.

FIG. 9 is a side view showing a modified example of the waste liquid treating apparatus in which the waste liquid collecting container according to the present embodiment is set.

[Explanation of symbols]

 24 Bottom plate (bottom) 26 Peripheral wall 28 Porous membrane (gas permeable membrane) 32 Connection pipe (waste liquid supply port)

Continued on the front page F-term (reference) 2H016 CA00 2H098 BA37 4D006 GA41 HA41 JA01A JA25A JA30A JA51A JA52A JB11 KA72 KB30 KE03P KE08P KE16Q MA03 MA22 MB03 MC11 MC22 MC28 MC54 MC58 MC62 MC65 PA01 PB19 PB65 PC72 A804

Claims (4)

[Claims] 1. A waste liquid collection container for disposal used for disposing of a processing liquid waste of a photosensitive material, wherein the container is disposed between a gas permeable film that allows only vapor to pass therethrough and a gas permeable film that is heated by a heating unit and is heated. And a bottom part for heating the treated waste liquid. 2. The method according to claim 1, wherein the bottom portion includes a bottom plate that is heated by a heating unit to heat the processing waste liquid, and a peripheral wall that stands upright around the bottom plate and has an opening covered with the gas permeable film. The waste liquid recovery container according to claim 1, wherein: 3. The waste liquid recovery according to claim 1, wherein a waste liquid supply port through which a waste liquid pipe for supplying the processing waste liquid is detachable is provided on the gas permeable membrane or the peripheral wall. container. 4. A waste liquid processing apparatus for processing a processing waste liquid of a photosensitive material, comprising: a housing forming a closed space; a heating means disposed in the housing; and a heating means provided in the housing. Heated, waste liquid recovery container for disposal provided with a gas permeable membrane that allows only the vapor of the stored processing waste liquid to permeate, and cooling means disposed on the upper part of the housing,
Waste water treatment comprising: a circulation fan for generating a circulation flow from the gas permeable membrane to the cooling means; and a discharge means disposed below the cooling means for discharging collected liquid collected therefrom. apparatus.