JPH03131381A - Photographic developer wastewater treatment apparatus - Google Patents

Abstract

PURPOSE:To efficiently condense and recover water by installing a means to detect the state of air immediate after it has passed evaporation medium and a controlling means to control evaporation affecting factors based on the detected state of air. CONSTITUTION:A fan driving means 62 to drive a fan 56 for circulation, a condenser 49 to control heat radiation of a first heat radiating part 47, an expansion valve 50 to control a heat absorption of a cooler 46, and a belt driving means 63 are connected with a controller 58. The controller 58 controls operation of at least one means based on temperature detected by a temperature sensor 57 and adjusts evaporation amount of water in wastewater. As another means to adjust evaporation affecting factors, means such as heating means of the endless belt 45, cooling means, heating and cooling means to heat and cool wastewater in a raw liquid tub, etc., are available. In this way evaporation efficiency is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photographic processing waste liquid processing apparatus used for concentrating photographic processing waste liquid.

[Conventional technology]

The waste liquid produced by photographic processing cannot be disposed of in rivers or the like to prevent pollution, so the actual situation is that the waste liquid produced by photographic processing must be disposed of by specialized companies. Most of the photographic processing waste liquid is water, so if the photographic processing waste liquid is concentrated or solidified, the storage amount can be kept in a very small amount, which simplifies storage space and subsequent processing, making it easier to outsource to specialized companies. Expenses will also be significantly reduced.

As an apparatus for this purpose, there is a photographic processing waste liquid processing apparatus that separates solid content contained in the photographic processing waste liquid from water.

The photographic processing waste liquid processing apparatus includes, for example, a main body case equipped with an intake port and an exhaust port, a liquid storage means for storing the waste liquid, and a heating evaporation means for evaporating the waste liquid at a high temperature higher than room temperature.
There is a configuration including a means for supplying waste liquid to the evaporation means and a condensing means for condensing water in the waste liquid from the nuclear power plant. As this type of apparatus or method, for example, Japanese Patent Application Laid-Open No. 62-11834
No. 6, No. 62-118348, No. 62-184457
No. 62-184459, No. 62-201442,
63-19655, 63-107795, 63
-143991, 63-151301, 63-
No. 287588, No. 63-319097, No. 61-1
No. 5194 and Japanese Unexamined Patent Publication No. 1-119382.

[Problem to be solved by the invention]

However, in the conventional device, when heating and evaporating the waste liquid, the
The temperature of the waste liquid is raised to 0 to 90°C to promote evaporation, so ammonium diosulfate and sulfite, which are often used as fixing solutions for photographic processing solutions and bleach-fixing solutions, decompose due to the high temperature, producing sulfur dioxide gas and hydrogen sulfide. , harmful or extremely foul-smelling gases such as ammonia gas are generated. There is a problem in that when these gases are discharged to the outside of the device from the exhaust port of the main body case, they contaminate the atmosphere around the device.

Further, there is a problem in that the temperature and humidity inside the main body change, and the processing quality and processing capacity of the collected water, such as PH and COD, change.

To solve this problem, condensate water filtration equipment,
It is necessary to have secondary treatment equipment such as an exhaust gas adsorption device, a concentrated liquid discharge mechanism, a deodorizer supply means, and a solidification agent supply means, and the entire device becomes a very complicated and large device, and its operation is also complicated. Ta.

The purpose of the present invention is to solve the above problems, and to efficiently condense and recover moisture evaporated from waste liquid,
It is an object of the present invention to provide a photographic processing waste liquid treatment device that can be constructed in a small size.

[Means and effects for solving the problems] The above-mentioned object of the present invention is to provide a photographic processing waste liquid treatment device that blows air onto an evaporation medium carrying photographic processing waste liquid to evaporate water in the waste liquid and condense the evaporated water. In this configuration, the air upstream of the evaporation medium passes through the evaporation medium once and reaches the condensation section, and there is a means for detecting the state quantity of the air immediately after passing through the evaporation medium, and adjusting the evaporation factor based on the detected state quantity. This is achieved by a photographic processing waste liquid treatment apparatus equipped with an adjusting means for controlling the above-mentioned conditions.

The dry air after passing through the condensation section upstream of the evaporative medium contains a considerable amount of air after passing through the evaporative medium only once. Even if the air that has passed through the evaporative medium further passes through another evaporative medium, the humidity of the air hardly increases. Therefore, since the air upstream of the evaporative medium passes through the evaporative medium once and then reaches the condensing section, the air contains moisture for efficient condensation.

In addition, by detecting the state quantity of the air immediately after passing through the evaporation medium and adjusting the evaporation factors that affect the amount of evaporation based on the detected state quantity, evaporation efficiency can be improved and the evaporation efficiency can be adjusted. stable evaporation.

Furthermore, by adjusting the evaporation factor based on the state quantity of the air immediately after passing through the evaporation medium, the temperature of the evaporation section can be adjusted so that noxious or malodorous gases are generated.

Furthermore, since the evaporation efficiency of water in the waste liquid is improved, the evaporated water can be efficiently condensed and recovered, and the photographic processing waste liquid processing apparatus can be configured in a small size.

The state quantities of air in the present invention include, for example, dry bulb temperature, wet bulb temperature, humidity, moisture content, and moving speed (wind speed), and at least one of these is detected. Examples of sensors for detecting the state ml include a temperature sensor, a humidity sensor, a moisture sensor, and a wind speed needle.

The evaporation factors in the present invention include, for example, air blowing speed, air blowing temperature, waste liquid temperature, evaporation medium temperature, evaporation medium movement speed, and pressure, and at least one of these is adjusted.

Adjustment means for adjusting evaporation factors include a blower fan drive means, an air heating means, an air cooling means, a waste liquid heating means, a waste liquid cooling means, an evaporative medium heating means, an evaporative medium cooling means, an evaporative medium driving means, and a compression means. , a suction means, a power switch for controlling these operations, a CPU, and other control means.

In the present invention, the evaporation factor is adjusted based on each detected state quantity of air, but one type of evaporation factor may be adjusted based on one type of state quantity, and one type of state quantity may be adjusted. multiple types of evaporation factors may be adjusted based on multiple types of state quantities, one type of evaporation factor may be adjusted based on multiple types of state quantities, and multiple types of evaporation factors may be adjusted based on multiple types of state quantities. You can. A preferred example is a method in which the humidity and wind speed of the air immediately after passing through the evaporative medium are detected, and the wind speed, temperature, etc. are adjusted so that the humidity or water content of the air immediately after passing through the evaporative medium is maximized.

The air containing moisture that has passed through the evaporation medium and evaporated from the waste liquid is cooled by the air cooling means, so that the moisture contained in the air is condensed. As an air cooling means,
There is a cooling section of a refrigeration system configured to circulate a refrigerant, or a cooler equipped with an electronic cooling element using the Peltier effect.

The temperature of the air in the main body case after passing through the evaporation medium and before passing through the air cooling means is 10 to 40°C, preferably 14 to 26°C.
is adjusted to Thereafter, the air, which has been cooled by the air cooling means and from which moisture has been condensed and removed, is preferably heated by the air heating means to return to its original temperature.

The air in the photographic processing waste liquid treatment device after passing through the evaporation medium and before passing through the air cooling means is heated at 10 to 40°C, preferably at 14°C.
By maintaining the temperature at a low temperature of ~26°C, ammonium thiosulfate and sulfite in photographic processing waste will not decompose due to high temperatures, and harmful or extremely malodorous gases such as sulfite scum, hydrogen sulfide, and ammonia gas will be released. Water in waste liquid can be evaporated and condensed without generation.

By adjusting the air temperature within the above range, evaporation of water in the waste liquid is promoted. In addition, by adjusting the temperature of the air after passing through the evaporation medium and before passing through the air cooling means within the temperature range indicated above, stable evaporation of water in the waste liquid is ensured without decreasing the evaporation efficiency of water in the waste liquid.

In the present invention, the main body case may have a structure that is partially open to the outside, but it is preferable that the main body case has a substantially or completely sealed structure. Gas generated from waste liquid does not leak out of the processing equipment and does not adversely affect the external environment. Furthermore, if the main body case is configured to be substantially sealed, it is easy to adjust the air temperature within the main body case. Furthermore,
By providing the main body case with a heat insulating material, the air inside the main body case is not affected by the temperature of the outside world, and the temperature can be easily adjusted.

Note that a substantially sealed main body case means that the air inside the main body case, and in some cases foul-smelling air, cannot escape from the main body case except when supplying photographic processing waste to the main body case or when removing condensed water from the main body case. It means something that is separated from the outside world to the extent that it does not leak into the world.

The evaporation medium in the present invention is preferably a cloth-like endless belt that rotates and has air permeability, and its material includes nonflammable inorganic fibers such as carbon and glass fibers, aramid fibers, and the like. Further, in order to attach or impregnate a large amount of waste liquid, a woven fabric having a mesh structure or a three-dimensional structure is preferable. These are Japanese Patent Application Laid-open No. 156501/1983 and Japanese Patent Application No. 1983/1983 filed by the present applicant.
It is disclosed in the specification of No. 204807 and the like.

The condensed water obtained by this photographic processing waste liquid treatment apparatus can be subjected to simple treatment (for example, pH adjustment) if necessary, and then drained to the sewer.

For example, by adding a solid acid to photographic processing waste liquid and/or condensed water to perform oxidation treatment, the pH of the waste liquid condensed water can be adjusted.
can be easily lowered to about 5 to 9, more specifically to about 7 to 8.5, so it is safe to dispose of condensed water in sewers, rivers, etc.

The solid acid added to the waste liquid or condensed water is in the form of powder or tablets, and can become a so-called strong acid in the presence of water. For example, there are powders or tablets of sulfamic acid, toluenesulfonic acid, benzenesulfonic acid, alkylsulfonic acid, etc., and sulfamic acid is particularly preferred. Furthermore, a powder such as sulfate may be made into a tablet by using a binder.

Solid acids are not only easy to handle, but they are also particularly effective against materials that are contaminated with various compounds and have high ionic strength, such as photographic processing waste liquids, and can be used effectively.

The solid acid may be added to the waste liquid in advance, or may be added to the concentrated waste liquid or condensed water after concentrating the waste liquid. Furthermore, solid acid may be placed in each of the waste liquid tank and the condensed water tank in advance.

Furthermore, by adding sulfamic acid to the waste liquid, the waste liquid tank becomes less contaminated.

The amount of sulfamic acid added to the photographic processing waste liquid, condensed water, and concentrated waste liquid is determined by the pH of the photographic processing waste liquid, condensed water, and concentrated waste liquid,
Although it varies depending on the alkaline component concentration and the type and concentration of volatile components, II! , more preferably 0.5 to 15 g per 1 g.

Further, the concentrated photographic processing waste liquid obtained by the present photographic processing waste liquid processing apparatus can be recovered and heated and incinerated. When the concentrated waste liquid is removed from the waste liquid tank, it can be easily removed by opening a stopper or valve provided at the bottom of the waste liquid tank. When extracting the concentrated waste liquid, a solidifying agent can be used to solidify the concentrated waste liquid in order to improve transportability and ease of handling after extraction. For details of what is used as a solidifying agent, see Japanese Patent Application No. 1-96435 and 1-96436.
JP-A No. 61-231548.

In addition, the atmospheric pressure inside the main body case is lower than 760 mmHg,
For example, water may be evaporated from the waste liquid by reducing the pressure to 1-700 mHg, preferably 5-b, and the evaporated water may be condensed.

Further, the photographic processing waste liquid in the present invention may be any waste liquid after performing photographic processing such as development (color, black and white), bleaching, bleach-fixing, fixing, water washing, stabilization, etc. All of these processing waste liquids may be mixed and processed (or may be processed individually.Also, waste liquids from water washing and stabilization processing may be mixed, and waste liquids from developing processing, fixing processing, and bleaching processing may be mixed. They may be treated individually, or they may be mixed and treated in other combinations.

The color developing solution used in the development of a photosensitive material that produces a waste solution that can be treated according to the present invention is preferably an alkaline aqueous solution containing an aromatic primary amine color developing agent as a main component. Aminophenol compounds are also useful as color developing agents, but p-phenylenediamine compounds are preferably used, representative examples of which are 3-methyl-4amino-N, N-diethylaniline, 3-methyl −
4-amino-N-ethyl-N-β-human'oxyethylaniline, 3-methyl-4-amino-N-ethyl 2-N-β-methanesulfonamidoethylaniline, 3
-Methyl-4-amino-N-ethyl-Nβ-methoxyethylaniline and their sulfates, hydrochlorides or p-
Examples include toluene sulfonate. Two or more of these compounds can be used in combination depending on the purpose.

The color developer may contain pH buffering agents such as alkali metal carbonates, borates or phosphates, bromide salts, iodide salts,
Development inhibitors or antifoggants such as benzimidazoles, benzothiacils or mercapto compounds are generally included. In addition, as necessary, hydroxylamine, diethylhydroxylamine, sulfite hydrazines, phenyl semicarbazides, triethanolamine, catechol sulfonic acids, triethylenediamine (1,4-diazabicyclo[2,2,2] octane), etc. Various preservatives, organic solvents such as ethylene glycol and diethylene glycol, development accelerators such as benzyl alcohol, polyethylene glycol, quaternary ammonium salts, and amines, dye-forming couplers, competitive couplers, and fogging agents such as sodium boron hydride. , auxiliary developing agents such as 1-phenyl-3-pyrazolidone, viscosity imparting agents, various chelating agents such as aminopolycarboxylic acids, aminopolyphosphonic acids, alkylphosphonic acids, and phosphonocarboxylic acids, such as ethylenediamine. Tetraacetic acid, nitrilotriacetic acid, diethylenetriaminepentaacetic acid, cyclohexanediaminetetraacetic acid, hydroxyethyliminodiacetic acid, 1hydroxyethylidene-1,
1-diphosphonic acid, nitrilo-N, N, N-trimethylenephosphonic acid, ethylenediamine-N, N, N',
N'-tetramethylenephosphonic acid, ethylene glycol
(O-hydroxyphenylacetic acid) and salts thereof can be cited as representative examples.

Further, when performing reversal processing, black and white development is usually performed and then color development is performed. This black-and-white developer contains known black-and-white developing agents such as dihydroxy-Hensen's agents such as hydroquinone, 3-pyrazolidones such as 1-phenyl-3-pyrazolidone, or aminophenols such as N-methyl-p-aminophenol. They can be used alone or in combination.

The pl+ of these color developing solutions and black and white developing solutions is 9 to 12.
It is common that The amount of replenishment of these developing solutions depends on the color photographic light-sensitive material to be processed, but it is generally less than 31 per square meter of light-sensitive material, and by reducing the bromide ion concentration in the replenisher, it can be increased to 500 or less.
It can also be lower than mR. When reducing the amount of replenishment, it is preferable to prevent evaporation of the liquid and air oxidation by reducing the area of contact with the air in the processing tank. Furthermore, the amount of replenishment can be reduced by using means for suppressing the accumulation of bromide ions in the developer.

After color development, the photographic emulsion layer is usually bleached.

The bleaching process may be performed simultaneously with the fixing process (bleach-fixing process), or may be performed separately. Furthermore, in order to speed up the processing, a bleach-fixing treatment may be performed after the bleaching treatment. Furthermore, treatment with two consecutive bleach-fixing baths, fixing treatment before bleach-fixing treatment, or bleaching treatment after bleach-fixing treatment can be carried out as desired depending on the purpose.

Examples of bleaching agents that can be used include compounds of polyvalent metals such as iron (■), cobalt (■), chromium (■), and copper (II), peracids, quinones, and nitro compounds. Typical bleaching agents include ferricyanide; dichromate; iron (1
) or organic complex salts of cobalt (III), such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, cyclohexanediaminetetraacetic acid, methyliminodiacetic acid,
, 3-diaminopropanetetraacetic acid, glycol ether diamine tetraacetic acid, and other aminopolycarboxylic acids or complex salts of citric acid, tartaric acid, malic acid, etc.; persulfates; bromates; permanganates; nitro-benzenes etc. can be used. Among these, aminopolycarboxylic acid iron(III) complex salts and persulfates, including ethylenediaminetetraacetic acid iron(III) complex salts, are preferable from the viewpoint of rapid processing and prevention of environmental pollution.

Additionally, aminopolycarboxylic acid iron(III) complexes are particularly useful in both bleach and bleach-fix solutions. The pi-1 of the bleach or bleach-fix solution using these aminopolycarboxylic acid iron (I[[)tu salts is usually 5.5 to 8, but in order to speed up processing, it is possible to use an even lower pl+. It can also be processed.

A bleach accelerator may be used in the bleaching solution, bleach-fixing solution, and their pre-bath, if necessary.

Specific examples of useful bleach accelerators are described in the following specifications: U.S. Pat. No. 3,893,858; Research Disclosure No. 17.129 (19
Compounds having a mercapto group or a disulfide bond described in JP-A-50-140.129 (July 1978), etc.
Deacylidine derivatives described in US Pat. No. 3,706
, 561; JP-A-58-16
．． Iodide salt described in No. 235: West German Patent No. 2,748.
Polyoxyethylene compounds described in Japanese Patent Publication No. 430, polyamine compounds described in Japanese Patent Publication No. 45-8836, bromide ions, etc. can be used. Among these, compounds having a mercapto group or a disulfide group are preferred from the viewpoint of a large promoting effect, and are particularly preferred, as described in US Pat.
The compounds described in No. 1 are preferred. Furthermore, U.S. Patent Nos. 4 and 5
Also preferred are the compounds described in No. 52,834. These bleach accelerators may be added to the light-sensitive material. These bleach accelerators are particularly effective when bleach-fixing color light-sensitive materials for photography.

Examples of fixing agents include thiosulfates, thiocyanates, thioether compounds, thioureas, and large amounts of iodide salts, but thiosulfates are commonly used, with ammonium thiosulfate being the most widely used. Can be used for Preservatives used after bleach-fixing are preferably sulfites, bisulfites, sulfinic acids, or carbonyl bisulfite adducts.

Silver halide color photographic materials that produce waste liquid that can be treated according to the present invention are generally subjected to water washing and/or stabilization steps after desilvering treatment. The amount of water used in the washing process depends on the characteristics of the photosensitive material (for example, the materials used such as couplers)
It can be set over a wide range depending on the purpose, the temperature of the washing water, the number of washing tanks (the number of stages), the replenishment method such as counterflow or forward flow, and various other conditions. Among these, the relationship between the number of flushing tanks and the amount of water in the multistage countercurrent method is described in the Journal of the Society of Motion Picture and Television Engineers.
5ociety of Motion r'
1cLure and Te1evision E
ngineers) Vol. 64, pp. 248-253 (1
It can be determined by the method described in May 955 issue).

According to the multi-stage countercurrent method described in the above-mentioned literature, the amount of water used for washing can be significantly reduced, but due to the increase in the residence time of water in the tank, bacteria will breed, and the generated suspended matter will adhere to the photosensitive material. The problem arises. In the processing of the color light-sensitive materials, as a solution to such problems, the method of reducing calcium ions and magnesium ions described in JP-A No. 62-288, 838 can be used very effectively. In addition, chlorine-based disinfectants such as isodeazolone compounds, cyabendazoles, and chlorinated sodium isocyanurate described in JP-A No. 57-8,542, and other benzotriazoles, as well as the It is also possible to use the disinfectants described in "Chemistry", Hygiene Technology Extra Section "Sterilization of Microorganisms, Disinfection, and Anti-Mold Technology", and Nikki Antibacterial and Antifungal Sciences Extra Section "Encyclopedia of Antibacterial and Antifungal Agents".

The pu of the washing water in the processing of the photosensitive material is 4 to 9, preferably 5 to 8. The washing water temperature and washing time can be set variously depending on the characteristics of the photosensitive material, its use, etc., but generally it is 20 seconds to 10 minutes at 15 to 45°C, preferably 25 to 10 minutes.
A range of 30 seconds to 5 minutes at 40°C is selected.

Furthermore, instead of washing with water, the photosensitive material can be directly processed with a stabilizing solution. In such stabilization treatment, Japanese Patent Application Laid-Open Nos. 57-8,543, 58-14,
All known methods described in No. 834 and No. 60-220.345 can be used.

Further, following the water washing treatment, a further stabilization treatment may be carried out, such as a stabilizing bath containing formalin and a surfactant, which is used as a final bath for color photosensitive materials for photography. .

Various chelating agents and antifungal agents can also be added to this stabilizing bath.

The overflow solution resulting from the water washing and/or replenishment of the stabilizing solution can also be reused in other processes such as the desilvering process.

The silver halide color light-sensitive material may contain a color developing agent for the purpose of simplifying and speeding up processing. In order to incorporate the color developing agent, it is preferable to use various precursors of the color developing agent. For example, indoaniline compounds described in U.S. Pat. No. 3,342,597, U.S. Pat. No. 3,342,59
No. 9, Schiff base-type compounds described in Research Disclosure No. 14,850 and Research Disclosure No. 15.159, Research Disclosure No. 13
, 924, U.S. Pat. No. 3,7
Metal salt complex described in No. 19,492, JP-A-53-135
, No. 628 can be mentioned.

The silver halide color light-sensitive material may contain various 1-phenyl-3-birapritones, if necessary, for the purpose of promoting color development.

Typical compounds are disclosed in JP-A-56-64, No. 339, No. 5
No. 7-14゜4547, and No. 5B-115,438
It is stated in the number etc.

The various processing solutions mentioned above are used at 10°C to 50°C. Normally, the standard temperature is 33°C to 38°C, but temperatures higher than 0 can accelerate processing and shorten processing time, or conversely, lower temperatures can improve image quality and stability of processing solutions. can be achieved. In addition, West German Patent No. 2,226,770 or U.S. Pat. No. 3,67
A treatment using cobalt intensification or hydrogen peroxide intensification as described in No. 4,499 may be performed.

[Embodiment]

Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the present invention is not limited only to this embodiment.

FIG. 1 is a schematic side view of a photographic processing waste liquid processing apparatus which is an embodiment of the present invention.

A waste liquid tank 41 for storing photographic processing waste liquid is installed in a substantially sealed main body case 40 of the photographic processing waste liquid processing apparatus 1 so as to be removable from the main body case. Waste liquid tank 41
The waste liquid can be replenished from a tank 44 using a pipe 42 and a pump 43. The tank 44 is installed in a base case 55 below the main case 40. The level of waste liquid in the waste liquid tank 41 can be controlled separately (not shown).

The endless belt 45 as an evaporation medium has a mesh structure made of glass fiber, is stretched around a pair of rollers 80, and rotates with its evaporation surface perpendicular to the circulating air. The endless belt 45 has its lower part immersed in the waste liquid in the waste liquid tank 41, and pumps up the waste liquid by rotation.

At least one protrusion 8 is provided on the circumferential surface of at least one roller 80 for rotationally driving the endless belt 45.
1 is provided. The protrusion 81 is the endless belt 45
It has a shape that bites into the endless belt 45 and locks the endless belt 45 when the roller 80 rotates to prevent slipping between the roller circumferential surface and the endless belt 45. The protrusion 81 is the roller 8o
Even if only one is formed at the center in the width direction, the endless heald 45 can be reliably rotated. If waste liquid or precipitates of components in the waste liquid adhere to the circumferential surface of the roller 80 (7), the roller 80 (7)
0 and the endless belt 45 may slip, and the endless belt 45 may not be driven to rotate. However, even if the roller 80 and the endless belt 45 slip, the projection 81 locks the endless heald 45, so that the endless belt 45 is driven to rotate intermittently and does not stop for a long time. Therefore, pumping up of waste liquid by the endless held 45 will not become impossible.

Note that even if the endless belt 45 does not rotate continuously but rotates intermittently, the efficiency of pumping up the waste liquid hardly decreases.

A barrier 82 is provided upstream of the endless belt 45 to prevent circulating air from detouring around the endless belt 45. The barrier 82 is provided to block the gap between the top and side portions of the endless belt 45 and the evaporator housing so that air does not flow through the top and side portions of the endless belt 45 . By providing barrier 82, substantially all of the circulating air passes through endless heald 45.

The waste liquid pumped up by the endless belt 45 evaporates, and the evaporated moisture is contained in the air.

The apparatus includes a refrigeration device, and this refrigeration device includes a cooler 46.
, a first heat radiating section 47 , a second heat radiating section 48 , a compressor 49 , and an expansion valve 50 , and a refrigerant is circulated through these through piping 60 .

The circulating air containing sufficient evaporated moisture is cooled below the dew point by a cooler (condenser) 46 of the refrigeration system, and the condensed moisture falls into a receiver 51. The condensed water in the receiver 51 is
It is collected into a tank 54 via a pipe 52 and a valve 53. The condensed water collected in the tank 54 is discarded or reused. The tank 54 is installed in a base case 55 below the main case 40.

The heat dissipation section of the refrigeration system is divided into two parts: a first heat dissipation section (air heater) 47 provided downstream of the cooler 46 and a second heat dissipation section (air heater) provided within the base case 55 that dissipates heat to the outside of the base case 55.
It is composed of a heat radiation section (air cooling section) 48. The first heat radiating section 47 and the second heat radiating section 48 are connected in series.

The amount of heat radiated by the first heat radiator 47 is set to be less than the amount of heat absorbed by the cooler 46, and excess heat is radiated by the second heat radiator 48.

A circulation fan 56 is provided downstream of the first heat radiating section 47 to circulate the air within the main body case 40.

The cooled and moisture-removed air is passed through a circulation fan 56.
In the process of being circulated by, the first heat radiating section 47 heats the heat. The air after water removal has a temperature of 10 to 40°C 1, preferably 1 after passing through the Endless Held and before passing through the cooler.
After the temperature is adjusted to 4 to 26°C, the waste liquid passes through the endless belt 45, and the moisture in the waste liquid adhering to the endless belt 45 is evaporated.

A temperature sensor 57 is provided above the waste liquid tank 41 to detect the air temperature in the evaporation section, and this temperature sensor 57 is connected to a controller 58. The temperature sensor 57 is preferably provided between the endless heald 45 and the cooler 46, and preferably just before the cooler 45. The temperature sensor 57 detects the air temperature immediately after passing through the endless belt, and the controller 5
8 controls the operation of each means that affects the amount of evaporation based on the detected temperature. Moreover, the controller 58 has a temperature of 10 to 40°C1 near the temperature sensor 57b on the downstream side.
Preferably, the operation of each means is controlled so that the temperature is 14 to 26°C without affecting the amount of evaporation.

Evaporation factors that do not affect the amount of water evaporation in the waste liquid include the wind speed and foot of the circulation fan 56, the temperature of the circulating air due to the heat absorption of the cooler 46 and the heat radiation of the first heat radiating part 47, the temperature of the waste liquid, There are the temperature of the endless heald 45, the rotation speed of the endless heald 45, the pressure inside the main body case 40, etc. The controller 58 is connected to each means for adjusting these evaporation factors, and controls the operation of each means based on the detected temperature.

Next, control by the controller 58 will be explained.

FIG. 2 is a block diagram of evaporation factor control by the controller 1-roller 58. The controller 58 is supplied with detected temperature signals from the temperature sensor 57, and based on these signals, the controller 58 supplies operation control signals to each means for adjusting the evaporation factor.

That is, the controller 58 includes a fan driving means 62 that drives the circulation fan 56, a compressor 49 that adjusts the amount of heat radiated from the first heat radiating section 47, an expansion valve 50 that adjusts the amount of heat absorbed by the cooler 46, and an endless device. A belt driving means 63 for rotationally driving the heald 45 is connected. Based on the temperature detected by the temperature sensor 57, the controller 58
controlling the operation of at least one means; The controller 58 can adjust the amount of water evaporation in the waste liquid by controlling the operation of at least one means.

Further, other means for adjusting the evaporation factor include, for example, a belt heating means for heating the endless belt 45, a heald cooling means for cooling the endless heald 45, and a waste liquid tank 41.
There are a waste liquid heating means for heating the waste liquid in the waste liquid tank 41, a waste liquid cooling means for cooling the waste liquid in the waste liquid tank 41, a pressurizing machine for pressurizing the inside of the main body case 40, and a pressure reducing machine for reducing the pressure inside the main body case 40. The evaporation efficiency can be improved by controlling the operation of these means by the controller 58 and adjusting the evaporation factors.

In this embodiment, the air temperature after passing through the endless heald and before passing through the cooler is 14 to 26°C, and the moving speed (wind speed) of the air immediately after passing through the endless belt is 0.3 to 3.
When the speed was 5 m/s, the processing quality and processing capacity were extremely high, and the water in the waste liquid could be efficiently condensed and recovered. The state quantities of the air, such as the air temperature and air movement speed when the processing efficiency is good, are stored in the memory 64 such as a look-up table, and the evaporation factors can be adjusted based on the stored conditions. Therefore, water in the waste liquid can be efficiently evaporated and condensed.

In addition to detecting the air temperature after passing through the endless heald, it is also possible to detect the air temperature before passing through the endless belt, and adjust the evaporation factor based on the temperature difference between the air before and after passing through the endless belt.

The temperature of the air after passing through the Endless Held is lower than that of the air before passing through the Endless Held due to the effect of heat of evaporation during moisture evaporation. Therefore, the fact that the temperature difference ∆ of the air before and after passing through the Endless Held is large is due to the fact that the Endless Held 45 understands this.
- This means that the moisture in the waste liquid is efficiently evaporated by contact with the air passing through the endless belt 45. Therefore, by adjusting the evaporation factors so that the temperature difference ΔT is maximized, the evaporation efficiency can be improved.

The maximum value ΔT max of ΔT is determined according to the temperature of the air after passing through the endless belt and before passing through the cooler, and is determined experimentally by repeating the process. Moreover, the operating conditions of each means for making the temperature difference ΔTmax are also determined experimentally. ΔTmax and the operating conditions of each means are stored in a memory 64 such as a look-up table. The controller 58 controls the operation of each means by referring to ΔT max and operating conditions stored in the memory based on the detected temperature.

Furthermore, instead of adjusting the evaporation factor by detecting the temperature of the air after passing through the endless belt, it is also effective to adjust the evaporation factor based on the humidity, moisture content, and wind speed of the air after passing through the endless heald. In other words, the humidity, moisture content, and wind speed of the air immediately after passing through the endless belt are detected, and the humidity, moisture content,
By adjusting the evaporation factor so that the wind speed is maximized, water can be efficiently evaporated from the waste liquid, and the evaporated water can be efficiently condensed and recovered.

For example, instead of the temperature sensor 57, a humidity sensor that detects humidity, a moisture sensor that detects moisture content, or an anemometer may be provided to detect the humidity in the waste liquid based on the humidity, moisture content, and wind speed of the air after passing through the endless heald. The evaporation efficiency can be improved by controlling the operation of each means that affects the evaporation of water and adjusting the evaporation factors. As the state quantity detection sensor, one type among the temperature sensor 57, humidity sensor, moisture sensor, and anemometer may be used, or a combination of multiple types may be used. For example, the humidity and wind speed of the air after passing through the endless belt are detected, and the wind speed,
Adjusting the temperature etc. is extremely effective.

In addition to detecting the humidity and moisture content of the air after passing through the endless held, it also detects the humidity and moisture content of the air before passing through the endless belt, and detects the humidity and moisture content of the air before and after passing through the endless belt. , it is also effective to adjust the evaporation factor.

The humidity and moisture content of the air after passing through the endless heald are higher than the humidity and moisture content of the air before passing through the endless belt. Therefore, the large difference in the humidity and moisture content of the air after passing through the endless belt means that the moisture in the waste liquid pumped up by the endless belt 45 is efficiently evaporated by contact with the air passing through the endless heald 45. means.

Therefore, the evaporation efficiency can be improved by adjusting the evaporation factors so that the humidity difference and the moisture content difference are maximized.

Moreover, since the air upstream of the endless belt 45 contains a predetermined amount of moisture evaporated from the waste liquid by passing through the endless belt 45, the air upstream of the endless belt 45 is configured to pass through a plurality of endless healds. However, there is virtually no increase in the humidity or moisture content of the air. Therefore, when a plurality of endless belts 45 are provided, the configuration is such that the air upstream of the endless heald passes through the endless belts 45 only once.

3 and 4 are plan views showing the arrangement of the endless belt 45 in which air passes through the endless belt 45 only once.

In the configuration shown in FIG. 3, two endless belts 45 are arranged at a predetermined angle, and air passes through the endless belts 45.
This is essentially double the area of 5. In the configuration shown in FIG. 4, three endless belts 45 are arranged at right angles to each other, substantially tripling the area of the endless belts 450 through which air passes. It is preferable that the air passes perpendicularly to the plane of the endless belts 45 as shown by the arrows, and it is preferable that the air is guided perpendicularly to each endless belt 45 by a duct or the like. Furthermore, the direction of air passage may be reversed.

Further, as shown in FIGS. 5 and 6, two endless belts 45 are overlapped with each other via a spacer 83,
It may also be stretched over a pair of rollers 80.

Furthermore, by immersing the endless belt 45 in the waste liquid by its thickness and maintaining the level of the waste liquid at this time, the endless heald 45 does not come into contact with the sludge that is formed as a result of concentrating the waste liquid. 4
No sludge will adhere to 5. The depth of the waste liquid is
The fin is set sufficiently deep compared to the thickness of the dress belt 45, and the endless belt 45 is immersed near the water surface of the waste liquid. When the waste liquid is concentrated, sludge accumulates at the bottom of the waste liquid tank, but the endless belt 45 does not come into contact with the sludge unless the sludge accumulates close to the water surface.

Since the level of the waste liquid tends to decrease due to evaporation of water in the waste liquid, it is necessary to maintain the level of the waste liquid constant so that the endless belt is always immersed in the waste liquid. For example, a liquid level detection sensor is installed, and the pump 43 appropriately supplies waste liquid into the waste liquid tank 4I so that the waste liquid level does not fall below the appropriate liquid level at which the endless heald 45 is immersed by its thickness. Since the level of the waste liquid is maintained constant, the endless belt 45 is prevented from being clogged or coated due to contact with sludge, and the efficiency of pumping up the waste liquid and the evaporation efficiency of water in the waste liquid by the endless belt 45 are not reduced. Water in the waste liquid can be efficiently evaporated.As shown in FIG. 1, the waste liquid tank 41 is provided with a liquid level detection sensor 65 that detects the level of the contained waste liquid. is connected to the controller 66. and controller 6
6 is connected to a pump 43, and the pump 43 is driven by the detection signal from the liquid level detection sensor 65 to supply waste liquid into the waste liquid tank 41.

FIG. 7 is a block diagram of the vicinity of the waste liquid tank.

The endless belt 45 is provided at a position where its lower end is sufficiently spaced from the bottom of the waste liquid tank. The liquid level detection sensor 65 is, for example, a flow 1 switch that is activated when the waste liquid level falls below a predetermined level, and is turned on when the waste liquid level falls below the level indicated by A in the figure. It turns OFF when it returns to the level indicated by A. While the liquid level detection sensor 65 is ON, the pump 43 is driven by the controller 66 to supply waste liquid from the tank 44 into the waste liquid tank 41, and at the same time when the liquid level detection sensor 65 is OFF, the pump 43 is driven. will be stopped.

The difference d between the liquid level indicated at A and the level indicated at B where the lowest end of the endless belt 45 is located is 5 to 10 mm greater than the thickness t of the endless belt 45, and the endless belt 45 is approximately equal to the thickness. Immersed in waste liquid. In this embodiment, the endless belt 45 has a speed of 2 to 3 c
Since it rotates at m/s, the pumping amount does not change depending on the depth of immersion into the waste liquid. Therefore, the endless belt 45 can sufficiently pump up the waste liquid just by being immersed by the thickness thereof.

As the waste liquid in the waste liquid tank 41 progresses, highly viscous concentrated liquid or sludge accumulates at the bottom, and the waste liquid near the water surface has a low viscosity and no sludge. Therefore, the endless belt 45 will not be covered with sludge or become clogged.

Further, the waste liquid tank 41 is formed deeply below the endless belt 45, so that sludge is concentrated in the deepest part. And a plug or valve 67 provided at the deepest part
By opening the container, the sludge and concentrated waste liquid can be easily removed.

Concentrated waste liquid and sludge in which water in the waste liquid has evaporated are collected in other tanks as necessary.

FIG. 8 is a sectional view of a modification of the waste liquid tank 41.
1 is formed to have an arcuate cross section. Since the sludge and concentrated waste liquid accumulate at the deepest part along the arcuate curved surface, by providing a stopper or valve 67 at the deepest part, the sludge and concentrated waste liquid can be easily recovered.

FIG. 9 is a sectional view of another modified example of the waste liquid tank 41, and is a sectional view of the endless belt 45 in the width direction. Waste liquid tank 4I
has a bottom surface that is inclined from one end of the endless belt 45 to the other end in the width direction.

6. Sludge and concentrated waste liquid accumulate at the deepest part along the slope, so by providing a stopper or valve 67 at the deepest part, the sludge and concentrated waste liquid can be easily recovered. Further, by arranging the deepest part of the waste liquid tank 41 on the loading side of the waste liquid supply tank 44 and the condensed water recovery tank 54, the recovery operation of sludge and concentrated waste liquid becomes easy.

In this photographic processing waste liquid processing apparatus, the water evaporated from the waste liquid is treated by alumite treatment on the parts of the heat exchange means such as the cooler 46 and the first heat radiating part 47 that come in contact with at least the air containing the water evaporated from the waste liquid. can be efficiently condensed and recovered.

In other words, since the alumite film prevents corrosion of the base of the heat exchange means, the corrosion resistance of the heat exchange means is improved, and the moisture evaporated from the waste liquid can be efficiently condensed and recovered without reducing the heat exchange efficiency. .

Since the heat exchange means has improved corrosion resistance, the heat exchange means can be made of aluminum or aluminum alloy, which has low corrosion resistance but high thermal conductivity. Since aluminum or aluminum alloy is lighter than stainless steel or the like, the heat exchange means and furthermore the photographic processing waste liquid treatment device can be made lighter.

Note that the heat exchange means can also be formed of other metals such as copper, which are lightweight and have high thermal conductivity.

The part of the heat exchange means that comes into contact with the air is subjected to alumite treatment.
Preferably, the heat absorption fins of the cooler 46 and the first heat radiation part 4
7, and almost all parts that perform heat exchange are made of aluminum or aluminum alloy, and by applying alumite treatment to the entire surface, heat exchange efficiency is not reduced and waste liquid is efficiently removed. Moisture can be recovered and corrosion resistance is improved.

FIG. 10 is a schematic diagram of the cooler 46, which is provided with a large number of thin plate-like fins 76 around a refrigerant flow pipe 60 through which refrigerant expanded by the expansion valve 50 flows. And the flow pipe 6
Due to the heat absorption of the low temperature refrigerant flowing through the fins 76, the temperature of the fins 76 is approximately equal to the refrigerant temperature. The air containing moisture evaporated from the waste liquid is heat exchanged with the fins 76, and the moisture evaporated from the waste liquid is cooled and condensed on the fins 76 and the flow pipe 960, and then drips into the receiver 51.

The fins 76 are preferably in the shape of an extremely thin plate in order to rapidly exchange heat, and are provided in large numbers radially around the flow pipe 60. Furthermore, the fins 76 are provided along the air circulation direction so as not to obstruct the air circulation. Therefore, air flows through the gaps between the fins 76 and circulates well, and heat exchange is performed efficiently.

FIG. 11 is an enlarged sectional view of the fin 76.

The flow pipe 60 and the fins 76 are formed of aluminum or aluminum alloy, and in the case of this embodiment, the flow pipe 6
0 is molded from aluminum and has an outer diameter of 10+n.
The fin 76 is formed of aluminum into a rectangular shape with a side of 60 mm and has a thickness of 0.25 mm.
It is mm. Further, the aluminum base surfaces of the flow pipe 60 and the fins 76 are subjected to alumite treatment. The fins 76 may be integrally molded with the flow pipe 60,
The fins 75 may be fixed after the 0 is molded. After the flow pipe 60 and the fins 76 are formed from aluminum, anodization is performed in a zero state by immersing them in sulfuric acid, oxalic acid, etc., to form an alumite film 77 on the surfaces of the flow pipe 60 and the fins 76.

The thickness of the alumite film 77 should be at least 1 μm, so that the aluminum substrate will not corrode and the thermal conductivity will not decrease. Therefore, the corrosion resistance of the flow pipe 60 and the fins 76 is improved, so that the heat exchange efficiency does not decrease.

Furthermore, even if the alumite treatment is applied only to the fins 76 that actually exchange heat with the air, the corrosion resistance of the fins 76 is improved, so that the heat exchange efficiency does not decrease. Furthermore,
Heat exchange efficiency is improved compared to flow tubes and fins made of stainless steel.

In addition, the pipe joint 78 shown in FIG. 10 is formed from aluminum or aluminum alloy and subjected to alumite treatment,
It is preferable that the welded portion is also welded to aluminum and subjected to alumite treatment.

Further, the flow pipe 60 and the fins 76 do not necessarily need to be formed from aluminum or an aluminum alloy, but may be formed from a metal with high thermal conductivity such as copper. In other words, by forming an aluminum film on the surface of the metal base, even if the flow tube 60 and fins 76 are formed of a metal with low corrosion resistance, the flow tube 60 and the fins 76 will not corrode, so the heat exchange rate will be reduced. will not decrease.

The first heat radiating section 47 also has a refrigerant flow pipe and fins like the cooler 46 , and the refrigerant that has been compressed by the compressor 49 and becomes high temperature flows through the flow pipe 60 . These flow pipes, fins, pipe joints, etc. are also made of aluminum.
Molded from aluminum alloy, a metal with high thermal conductivity,
An alumite film is formed on the surface.

Therefore, the corrosion resistance of the first heat radiating part 47 is improved, so that
There is no reduction in heat radiation efficiency due to corrosion, and good heat exchange can be maintained. Since the functions of the highly corrosion-resistant cooler 46 and first heat radiating section 47 are maintained constant, it is easy to maintain the air temperature constant after passing through the endless held but before passing through the cooler.

Although the above embodiment has a configuration in which the heat radiating parts of the refrigeration apparatus are divided and arranged in series, the divided heat radiating parts may be arranged in parallel. That is, as shown in FIG.
A second heat radiating section 48 is provided outside the main body case 40. Here, the first heat radiating part 47 and the second heat radiating part 48 have the same heat radiating capacity.

Then, flow path switching means 74a and 74b are provided to selectively flow part or all of the refrigerant to the second heat radiating section 48, and the first
The temperature inside the main body case 40 can also be adjusted by adjusting the heat radiation from the heat radiation part 47.

The compressor 49 and the second heat radiating section 48 of the refrigeration system are provided in the base case 55, and the heat radiated from the second heat radiating section 48 is radiated to the outside through the hole 61 by the fan 59. Therefore, when the device is operated in a state where outside air is not drawn into the sealed main body case 40, the compressor 49, the second heat radiating part 48, the motor, etc. Residual heat has no effect.

The temperature of the air in the evaporation section in the main body case 40 after passing through the endless held and before passing through the cooler is maintained at a low temperature of 10 to 40°C, preferably 14 to 26°C, so that ammonium thiosulfate and Sulfites do not decompose at high temperatures, and no harmful or extremely malodorous gases such as sulfur dioxide gas, hydrogen sulfide, or ammonia gas are generated.

Therefore, the secondary processing device for processing gas is also simplified and can be downsized. Furthermore, the photographic processing waste liquid does not corrode the equipment due to high temperatures (and maintenance of the equipment becomes easier).

Furthermore, since the air is heated by utilizing heat from the heat radiation section of the refrigeration system, the operating cost of the system can be reduced.

Note that evaporation and condensation can also be performed efficiently by detecting the temperature of the waste liquid in the waste liquid tank 41 and adjusting the temperature of the evaporator based on the temperature of the waste liquid.

The condensed waste liquid, in which the moisture in the waste liquid has evaporated, is collected in another tank as required.

In addition, a tank 4 containing waste liquid to be supplied to the waste liquid tank 41 is provided.
4 has a plurality of storage parts, concentrated waste liquid and condensed water can also be collected in this tank 44.

FIG. 13 is a cross-sectional view of the tank 44 containing waste liquid and condensed water.

The tank 44 has two storage portions 37a and 37b defined by a flexible partition wall 36 provided therein. tank 44
A first storage portion 37a therein stores waste liquid, and the waste liquid is pumped up by a pipe 42 and a pump 43 and supplied to a waste liquid tank 41. In addition, the condensed water accumulated in the receiver 51 is stored in the second accommodating portion 37b in the tank 44 as needed through the pipe 52.
and is recovered by valve 53. The upper part of the partition wall 36 is the lid body 3
8.

As the moisture in the waste liquid in the waste liquid tank 41 evaporates, when it is necessary to replenish the waste liquid in the waste liquid tank 41, the tank 44 containing the waste liquid is loaded into the base case 55. Each of the pipes 42, 52 is preferably detachably attached to the lid 38 provided on the tank 44, and other pipes 42a, 52 are provided in the tank 44 that can be connected to the respective pipes 42, 52.
It is preferable to provide a.

When the tank 44 is loaded, the waste liquid stored in the first storage portion 37a occupies almost the entire volume of the tank 44. As the waste liquid in the first accommodating part 37a is supplied to the waste liquid tank 41, the partition wall 36 deforms and the volume of the first accommodating part 37a decreases.
The volume of the accommodating portion 37b increases. Then, the condensed water accumulated in the receiver 51 is supplied and collected.

In the tank 44, the supply of waste liquid and recovery of condensed water are performed simultaneously, and each time the supply of waste liquid is finished, the tank 44 can be removed, the condensed water can be recovered, and it can be disposed of in a sewage system or the like.

The tank 44 is configured to store waste liquid in a first storage portion 37a and store condensed water in a second storage portion 37b.
In the containment department? ! It may be configured to have four condensation liquid volumes.

Alternatively, the inside of the tank 44 can be divided into three storage sections by the partition wall 36, and each of the three storage sections can store waste liquid, condensed water, and concentrated waste liquid.

Note that the tank 44 is not limited to the above configuration, and may have a configuration in which a plurality of accommodating portions are defined by a flexible bag body instead of the partition wall 36.

The tank 44 is molded from a hard material such as cardboard, cardboard, or hard plastic resin, but may also be molded from a flexible material such as plastic resin.

The tank 44 is suitable for use, for example, in replenishing an automatic developing device with a photographic processing solution for developing, bleaching, bleach-fixing, fixing, etc., and collecting waste liquid of this processing solution.

Therefore, waste liquid is collected from the automatic developing device into the tank 44,
By loading this into the photographic processing waste liquid processing apparatus as it is, the work of supplying the waste liquid to the waste liquid tank 41 and the work of recovering condensed water from the receiver 51 are extremely facilitated.

FIG. 14 is a sectional view of a modified example of the evaporator, and this modified example can be replaced with the evaporator of the embodiment described in section 1.

The evaporation section consists of a waste liquid tank 41, an endless belt 45a for pumping up waste liquid that is partially immersed in the waste liquid in the waste liquid tank 41, and an entres belt 45b for evaporating waste liquid that is in contact with the endless heald 45a for pumping up.
Two endless healds 45a and 45b are arranged in the vertical direction. Endless heald 45a for pumping
is constructed integrally with the waste liquid tank 41, and an endless belt 45b for evaporation is provided in the main body case 4o. "Kumu"
1. The endless belt 45a is installed in the waste liquid tank 41 with its two end faces exposed, and the endless heald 45a for pumping rotates while contacting the endless heald 45b for evaporation, so that the drawn up waste liquid can be transferred to the endless heald for evaporation. )
45b. The water in the waste liquid transferred to the endless belt 45b for evaporation evaporates from the surface of the endless belt 45b.

The waste liquid tank 41 equipped with the endless health l-45a for pumping is easy to wear under the body case 40, and the waste liquid tank 41 is
The concentrated waste liquid and residue can be recovered by exchanging the . Further, it is also easy to remove the waste liquid tank 41 from the main body case 40 and clean it.

[Effects of the Invention] 8 According to the present invention, one flow of air as an evaporation medium
Since the waste liquid is configured to pass through the waste liquid twice before reaching the condensation section, the evaporation efficiency of water in the waste liquid is improved. Moreover, by detecting the state quantity of the air immediately after passing through the evaporation medium and adjusting the evaporation factors based on the detected state quantity, it is possible to adjust the evaporation efficiency and perform stable evaporation.

In addition, by adjusting the evaporation factor based on the detected state quantity of air, the air temperature in the evaporation section in the photographic processing waste liquid treatment device can be adjusted to 10 to 40°C, preferably 14 to 26°C.
Can be maintained at a low temperature of °C. Therefore, ammonium thiosulfate and sulfite in the photographic processing waste liquid are not decomposed at high temperatures, and harmful or extremely malodorous gases such as sulfur dioxide gas, hydrogen sulfide, and ammonia gas are not generated.

In addition, the secondary processing device for processing the gas has become simpler and can be made smaller.

Further, the photographic processing waste liquid does not corrode the apparatus due to high temperatures, and maintenance of the apparatus becomes easier.

Furthermore, since the evaporation efficiency of water in the waste liquid is improved, the evaporated water can be efficiently condensed and recovered, and the photographic processing waste liquid processing apparatus can be configured in a small size.

Since the moisture evaporated from the waste liquid can be efficiently recovered, it is possible to provide a waste liquid treatment device that is compact, easy to handle, and has high processing efficiency.The waste liquid treatment device can be integrated with an automatic developing device or It is now possible to incorporate it into

[Brief explanation of the drawing]

1 is a schematic side view of a photographic processing waste liquid treatment apparatus according to an embodiment of the present invention; FIG. 2 is a block diagram of control by a controller; FIGS. 3 and 4 are plan views showing the arrangement of endless healds; 6 and 6 are partially cutaway perspective views of a modified example of the endless belt, FIG. 7 is a configuration diagram of the vicinity of the waste liquid tank, FIGS. 8 and 9 are sectional views of modified examples of the waste liquid tank, and FIG. 10 is a A schematic diagram of the cooler, Figure 11 is an enlarged sectional view of the fins, Figure 12 is a configuration diagram of a modified example of the refrigeration system, Figure 13 is a sectional view of the waste liquid supply tank, and Figure 14 is a modified example of the evaporator. It is a schematic diagram. Symbols in the figure: 1 - Photographic processing waste liquid processing device 40 - Main body case 41 - Waste liquid tank 42, 52. 60-Piping 43-Pump 44.54-Tank 45-Endless Held 46-Cooler 47-First heat radiation part 48-=-Second heat radiation part 49-Compressor 5〇-Expansion valve 5
1 - Receiver 53 - Valve 55 - Base case 56 - Circulation fan 57 - Temperature sensor 58 - Controller 59 - Fan 61 - Hole 62 - Fan drive means 63 - Belt drive means 64 - Memory 5 Fig. 7 JP-A No. 131381 (16) Fig. 1) Fig. 13 JP-A No. 131381 (18) Fig. 4

Claims (1)

[Claims] In a photographic processing waste liquid processing device that blows air onto an evaporation medium carrying photographic processing waste liquid to evaporate water in the waste liquid and condense the evaporated water, the air upstream of the evaporation medium passes through the evaporation medium once and enters the condensation section. A photographic processing waste liquid processing apparatus is configured to achieve this, and is provided with means for detecting the state quantity of air immediately after passing through the evaporation medium, and adjustment means for adjusting the evaporation factor based on the detected state quantity.