JPH01143680A - Treating apparatus for photographic processed waste liquids - Google Patents

Abstract

PURPOSE:To substantially reduce the BOD or COD concentration of a liquid formed by condensing vapors by providing an obstructing member between the surface of photographic process waste liquid of a vaporizing means and the vapor exit for turning aside the vapor flow so as to avoid the discharging of an offensive odor components from the vapor exit. CONSTITUTION:The vapor resulting from vapor concentration of photographic process waste liquid is discharged from a vapor exit 1d of an evaporator 1. In this process, even in a case where the vapor contains, due to bumping, an offensive odor components (such as sulfureous acid gas, hydrogen sulfid and ammonia gas) in a large amount, this vapor is impinged against an obstructing member 40 provided between the surface of the waste liquid and the vapor exit 1d so as to turn aside its flow for discharging from the vapor exit 1d. This permits the harmful, offensive odor gas components contained in the vapor due to bumping to be separated therefrom and sent back in the photographic process waste liquid. For this reason, the amount of the offensive odor components discharged from the vapor exit 1d is reduced and the BOD or COD concentration of the liquid formed by condensing the vapor is controlled.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a processing device for evaporating waste liquid (hereinafter referred to as photographic processing waste liquid or waste liquid) generated during the processing of photographic light-sensitive materials by an automatic photographic processor, and in particular, The present invention relates to a processing apparatus for photographic processing waste liquid, which is suitable for being disposed in or near an automatic processor. (Date of Invention) In general, photographic processing of silver halide photographic materials includes development, fixing, washing, etc. in the case of black and white materials, and color development, bleach-fixing (or bleaching, fixing, etc.) in the case of color photographic materials. ),
A combination of processes using a treatment liquid having one or more functions such as water washing and stabilization is carried out. In photographic processing in which a large amount of light-sensitive material is processed, the components consumed during processing are replenished, while the components that are concentrated by elution or evaporation into the processing solution (
Measures are taken to maintain the performance of the processing solution at a constant level by removing bromide ions in the developing solution and silver complex salts in the fixing solution and keeping the processing solution components constant. The processing solution is replenished and a portion of the processing solution is discarded for removal of thickening components in photographic processing. In recent years, systems have been changing to systems in which the amount of replenishment fluid, including washing water, which is used as a replenishment fluid for washing, has been significantly reduced due to pollution and economic reasons, but photographic processing waste fluid is removed from the processing tank of automatic processors. It is led through a waste liquid pipe, diluted with waste liquid from washing water, cooling water from automatic processors, etc., and then disposed of in a sewer or the like. However, due to the tightening of pollution regulations in recent years, it is possible to dispose of washing water and cooling water into sewers or γ-use. solution (or bleaching solution, fixing solution), stabilizer solution, etc.]
It has become virtually impossible to dispose of. For this reason, each photo processing company pays a collection fee to a specialized waste liquid processing company to collect the waste liquid, or installs pollution treatment equipment. However, the method of outsourcing to a waste liquid treatment company requires a considerable amount of space to store the waste liquid, and is also extremely expensive. moreover,
Pollution treatment equipment has drawbacks such as extremely large initial investment (initial cost) and the need for a fairly large area for maintenance. Therefore, waste liquid is generally collected by a waste liquid collection company and rendered harmless through secondary and tertiary processing.However, not only is the price of waste liquid collection increasing year by year due to rising collection costs, but collection efficiency is low in minilabs, etc., so it is difficult to do so. No one can come to collect the liquid, causing problems such as waste liquid filling the store. In order to solve these problems, research has been conducted to heat the photographic processing waste liquid to evaporate the water to dryness or solidify it, with the aim of making it easier to process the photographic processing waste liquid even in minilabs. This is shown in Utility Model Application Publication No. 60-70841. By the way, when photographic processing waste liquid is evaporated and concentrated, for example, the distilled liquid obtained by condensing the vapor contains sulfur dioxide gas, hydrogen sulfide,
If harmful malodorous gas such as ammonia gas gets mixed in,
BOD or COD? The IA degree becomes extremely high. This is due to the decomposition of specific sulfur compounds, such as thiosulfate and sulfite, which are often used as fixers and bleach-fixers contained in photographic processing solution waste. For this reason, various studies and experiments have been conducted to reduce the BOD and COD concentrations of the condensate obtained by evaporating photographic processing waste liquid, and it has been found that in the process of heating the photographic processing waste liquid and leaving the evaporation means, There is a problem in that the bumping photographic processing waste liquid mixes into the steam, increasing the BOD and COD concentrations of the condensate. Therefore, it is possible to suppress the bumping itself, but there are certain limits, and it is necessary to separate the harmful, malodorous gases such as sulfur dioxide gas, hydrogen sulfide, and ammonia gas that are mixed into the steam due to bumping, and to remove them from the evaporation means. It is efficient to prevent this from happening. From this point of view, if an obstacle is installed between the photographic processing waste liquid surface and the steam outlet, and the flow of steam is changed by collision, harmful sulfur dioxide gas, hydrogen sulfide, ammonia gas, etc. contained in the steam can be removed. BOD of condensate obtained by condensing steam, which can separate malodorous gas components
It has been found that COD concentration can be significantly reduced. (Object of the invention) This invention was made in view of the above-mentioned conventional problems.
It is an object of the present invention to provide a processing device for photographic processing waste liquid that is capable of greatly reducing the BOD and COD concentrations of a condensate obtained by condensing the vapor generated in the process of evaporating and concentrating photographic processing waste liquid. (Means for Solving the Problems) In order to solve the above-mentioned problems of the present invention, photographic processing is carried out in which photographic processing waste liquid stored in an evaporating means having a steam outlet is heated by a heating means to evaporate and concentrate it. In the waste liquid processing apparatus, the evaporation means is characterized in that there are few obstacles between the photographic processing waste liquid surface and the steam outlet that change the flow of steam. In this way, even if the vapor generated by evaporative concentration of photographic processing waste liquid exits from the vapor outlet of the evaporation means due to bumping, which may cause the vapor to contain a large amount of malodorous components, this vapor will not become obstructed. They collide, the flow path is changed, and they exit. Therefore, harmful and malodorous gas components such as sulfur dioxide gas, hydrogen sulfide gas, and ammonia gas contained in the steam due to bumping are separated and returned to the photographic processing waste liquid, reducing the amount of them coming out from the steam outlet. As a result, the sulfur compounds in the condensate are reduced, and the BOD and COD concentrations are suppressed. The obstruction of the present invention is arranged between the surface of the photographic processing waste liquid stored in the evaporating means and the steam outlet so that the discharged steam hits it. In other words, the obstruction is structured so that the steam collides with the malodorous components, causing them to fall, and preventing the malodorous components from being discharged from the steam outlet. For example, the upper part of the photographic processing waste liquid may be covered with a net-like member or a plate with small holes formed therein, or the plates may be provided alternately to divert the steam, and a plate may be placed in front of the steam outlet. These members may be attached in close proximity to each other, or they may be provided in combination. In this invention, the heating means that comes into contact with the photographic processing waste liquid is
It may be a nichrome wire, or may be heated by a molded heater such as a cartridge heater, quartz heater, Teflon heater, rod heater, or panel heater, or microwave. Alternatively, a conductive material may be brought into direct contact with the photographic processing waste liquid, and the conductive material may cause an electric current to flow through the photographic processing waste liquid and heat the photographic processing waste liquid. Further, the heating means may be disposed so as to be entirely immersed in the photographic processing waste liquid, or may be disposed so as to be partially immersed in the photographic processing waste liquid, such that the evaporation of the photographic processing waste liquid is caused by heating by the evaporating means. , the heating temperature is preferably 120°C because it can improve waste liquid processing efficiency (processing speed).
The temperature is preferably about 130°C. The evaporation means may be in any form, including cubes, cylinders, polygonal prisms including square prisms, cones, polygonal pyramids including square pyramids, and combinations of some of these. However, it is preferable that the photographic processing waste liquid be vertically long so that the temperature difference between the vicinity of the heating means and the bottom of the photographic processing waste liquid is large. It is preferable to make the upper space as wide as possible. The material of the evaporation means may be any heat-resistant material such as heat-resistant glass, titanium, stainless steel, carbon steel, heat-resistant plastic, etc. However, from the viewpoint of safety and corrosion resistance, stainless steel (preferably 5US304, 5US316, particularly preferably 5US316) or titanium, and the heating means may be installed at any position as long as it can heat the waste liquid of the evaporation means.
As described in Japanese Patent Application No. 61-288328, a heating means is installed to heat the upper part of the photographic processing waste liquid in the evaporating means, and the temperature of the photographic processing waste liquid near the heating means and the bottom part of the photographic processing waste liquid is It is preferable to create a difference in temperature, and it is preferable to install the heating means so that this temperature difference is 5° C. or more, in order to further enhance the effects of the present invention. Next, as for representative examples of photographic processing waste liquids that can be processed according to the present invention, those described in Japanese Patent Application No. 1986-194615 previously filed by this applicant are used, and in particular, The processing apparatus of the invention is effective for photographic processing waste liquid containing large amounts of thiosulfates, sulfites, and ammonium salts, and is particularly effective when containing organic acid ferric complex salts and thiosulfates. be. A preferred application of the present invention is to treat photographic processing waste liquid generated during the development of photographic light-sensitive materials using an automatic processor in or near the automatic processor. Here, automatic processors and photographic processing waste liquid will be explained. Automatic processor In FIG. 1, the automatic processor is designated by the reference numeral 100, and the one shown in the figure continuously passes a roll of photographic material F into a color developer tank CD, a bleach-fix tank BF, and a stabilizing treatment tank 1sb. It is guided, photographed, dried, and then rolled up. Reference numeral 101 denotes a replenisher tank, and a sensor 102 detects the photographic processing amount of the photosensitive material F, and a control device 103 replenishes each processing tank with replenisher according to the detected information. When the replenisher is replenished for each photographic processing amount, the overflow waste liquid is discharged from the IA processing tank and collected in the stock tank 104. A simple method for transferring overflowing photographic processing waste liquid to the stock tank 104 is to allow it to fall naturally through a guide pipe. There may also be cases where it is forcibly pumped using a pump or the like. Further, as described above, although there are differences in the components of the photographic processing waste liquid in each of the photographic processing tanks CD, BF, and sb, in the present invention, it is preferable to mix all the photographic processing waste liquids and process them all at once. (Example) FIG. 2 is a schematic diagram showing a processing apparatus for photographic processing waste liquid according to the present invention. In the figure, reference numeral 1 denotes an evaporation pot as an evaporation means, which has a cylindrical upper part 1a with a large diameter and a cylindrical lower part 1b with a small diameter.
It is composed of. A heating means 2 is arranged in the upper part 1a of the evaporating pot 1, and a ball valve 3 is provided in the lower part 1b. A liquid level sensor 4 is provided in the upper part 1a of the evaporator 1, and a sludge receiver 6 is placed on a support stand 5 disposed in the lower part of the evaporator 1. A polypropylene bag 7 is provided inside the sludge receiver 6, and is fixed to the lower part 1b of the evaporating pot 1 with an O-ring 8. A steam exhaust pipe 9 is provided in the upper part 1a of the evaporating pot 1, and this steam exhaust pipe 9 is connected to a distilled liquid inlet pipe 12 through a heat exchanger 1o and a condensing means 11. Inside the upper part 1a of the evaporating pot 1, as shown in FIG. 2
The sheets are arranged at predetermined intervals. In the condensing means 11, a large number of cooling heat sinks 1 are installed in the steam exhaust pipe 9.
3 is provided, and a liquid level sensor 14 is further provided. A cooling water introduction pipe 15 is provided at the bottom of the condensing means 11, and is connected via a cooling water circulation pump 16 to a shower vibe 17 having a large number of small holes. The air in the condensing means 11 is discharged to the outside of the processing apparatus by an air cooling fan 18, and the accumulated liquid introduction pipe 12 is connected to the accumulated liquid tank 19. Located below the liquid level, the bubbling mechanism 20
It consists of Furthermore, in the upper part of the reservoir tank 19,
An activated carbon cartridge 21 containing activated carbon is provided. The accumulated liquid tank 19 is also provided with an air introduction pipe 22,
It is introduced into the waste liquid of the evaporator 1 via an air pump 23. The waste liquid supply tank 24 is provided with a waste liquid introduction pipe 25, which is connected to the upper part 1a of the evaporation pot via a bellows pump 26 and a heat exchanger 10. The waste liquid supply tank 24 is further provided with a liquid level gauge 27. A guide pipe 28 is provided in the upper part 1a of the evaporator 1, and is connected to the waste liquid supply tank 24 via a plunger disk 29. A temperature sensor 30 is also provided in the upper part 1a of the evaporator 1.
is provided. Next, an outline of the heating and evaporation process using this apparatus will be explained. Approximately 2 C1 fl of overflow liquid from the automatic developing machine is stored in a waste liquid supply tank 24, and an activated carbon cartridge 21 filled with activated carbon, a accumulated liquid introduction pipe 12, and an air introduction pipe 22 are connected to the accumulated liquid tank 19. A polypropylene bag 7 is installed in the sludge receiver 6 under the lower part 1b of the evaporation pot 1,
After fixing to the lower part 1b of the evaporator 1 with two O-rings 8 and supplying water into the condensing means 11, when the switch is turned on, the air pump 23 is activated and the air in the accumulated liquid tank 19 is pumped into the air introduction pipe. 22 into the evaporation pot 1. Then, the air-cooling fan 18 and the cooling water circulation pump 16 operate in this order, and the stored water passes through the cooling water introduction pipe 15 from the shower vibe 17 and onto the heat sink 13 of the steam exhaust pipe 9 housed in the condensing means 11. The water is supplied and collected again at the bottom of the condensing means 11, thus circulating. Then, the bellows pump 26 is activated, and the waste liquid in the waste liquid supply tank 24 passes through the waste liquid introduction pipe 25 and is transferred to the heat exchange means 1.
After passing through zero, it is sent into the evaporator 1. When the amount of waste liquid in the evaporator pot 1 increases and the liquid level is detected by the liquid level sensor 4 for, for example, 3 seconds or more, the operation of the bellows pump 26 is stopped, and at the same time, the heating means 2 is switched on, and the heating evaporation is started. will be started. Due to this heating and evaporation, the amount of waste liquid in the evaporator 1 decreases, the liquid level drops, and when the liquid level is not detected by the liquid level sensor 4 for more than 3 seconds, the bellows pump 26 is activated again. The switch is turned on and the waste liquid supply tank 2
The operation of supplying the waste liquid in evaporator 4 into evaporator 1 is repeated. The steam evaporated from the evaporation pot 1 passes through the steam exhaust pipe 9, and after exchanging heat with the waste liquid in the heat exchanger 10, it passes through the condensing means 11, where a part of it is condensed and becomes a condensate liquid. . By the way, the photographic processing waste liquid is heated inside the evaporating pot 1, and when evaporation and concentration are performed, steam is discharged from the steam discharge port 1d to the steam discharge pipe 9. In this process, the photographic processing waste liquid bumps and its water droplets scatter inside the evaporator 1, and even if the vapor contains malodorous components, when this steam passes through the obstacle 40, it collides and the malodorous components are released. The steam that falls and does not contain malodorous components is discharged from the steam exhaust port 1d. Therefore, it is possible to reduce the amount of malodorous components mixed in the steam and to discharge them, and as a result, the amount of sulfur-based compounds in the condensate is reduced and the BO
D and COD concentrations can be suppressed. This condensate, together with the remaining gas in the steam, is transferred to the accumulated liquid inlet pipe 12.
, and is sent into the accumulated liquid tank 19, and the tip below the accumulated liquid surface @
The condensed water is discharged from the tank 12a and stored in the reservoir tank 19. At this time, bubbling occurs as the gas released from below the surface of the reservoir rises in the reservoir, and this bubbling causes gases such as hydrogen sulfide melted in the reservoir to be expelled from the fluid. is the operation of the air pump 23, and the air is supplied from the accumulated liquid tank 19 to the evaporation pot 1 through the air introduction pipe 22.
It is returned to the photographic processing waste liquid located at the bottom of the chamber. When the liquid level sensor 27 detects that the waste liquid in the waste liquid supply tank 24 has run out, the operation of the bellows pump 26 is stopped and the heating means 2 is turned off, for example, for 2 hours. After cooling water circulation pump 1
6. The air cooling fan 18 stops, the lamp lights up, a buzzer sounds to notify that the evaporation and concentration process has been completed, and the air pump 23 stops. Here, the ball pal 3 is opened and the sludge in the evaporating pot 1 is dropped into the polypropylene bag 7, and then the O-ring 8 is removed and taken out. In addition, during the evaporation concentration process, when the liquid level sensor 14 detects that the water in the condensing means 11 has run out, the lamp lights up and the buzzer goes off, indicating that the stored water has run out. Inform. Further, during the evaporation concentration process, if the temperature sensor 30 detects that the liquid level in the evaporator 1 has abnormally decreased for some reason and the temperature in the evaporator 1 has risen to 120°C due to dry heating, the lamp lights up, a warning buzzer sounds, and the heating means 2 is turned off. From then on, the evaporation concentration process is interrupted by the series of operations described above. 4 to 7 are diagrams showing other embodiments of the obstacle 40, and the obstacle 4o shown in FIG. Covers the top of the photographic processing waste liquid. The obstacle 40 shown in FIG. 5 is constructed by providing a plurality of flat plates 43 on the inside of the evaporating pot 1 in an alternating manner with their tips facing slightly downward. Therefore, the steam collides with the flat plate 43 and detours around the flat plate 43 to reach the steam outlet 1d, while the malodorous components fall and are returned to the photographic processing waste liquid. The obstacle 40 shown in FIG. 6 is constructed so that a disk 44 having a diameter larger than that of the steam exhaust port 1a is provided below the steam exhaust port 1d to cause steam to collide with the obstacle. Is there an obstacle 40 shown in FIG. 7 inside the evaporator 1?
45 to form a passage around the block 45. [Experiment Example 1] MPS processing system vapor automatic developing machine RP-800
(manufactured by Konica Corporation), and after printing a commercially available color photographic paper (manufactured by Konica Corporation), continuous processing was performed using the following processing steps and processing solution. Standard processing steps (1) Color development 40℃ 3 minutes (2) Bleach fixing 38℃ 1 minute 30 seconds (3) Stabilization treatment
25℃~35℃ 3 minutes (4) Drying 75℃~1
00℃ for about 2 minutes Processing solution composition [Color development tank solution] Ethylene glycol 15ml Potassium sulfite 2.0g Potassium bromide
1.3g sodium chloride
0.2g potassium carbonate
24.0g 3-Methyl-4-amino-N-ethyl-N-(β-methanesulfonamidoethyl)aniline sulfate 5.5g optical brightener (4,4
'-diaminostilbendisulfonic acid derivative)
t,og hydroxylamine sulfate
3.0g 1-hydroxyethylindene-1,1-diphosphonic acid 0.4g hydroxyethyliminodiacetic acid 5. Og magnesium chloride hexahydrate 0.7g1.2-dihydroxybenzene-
3,5-Disulfonic acid disodium salt 0.2g Add water to make the pH 11, and adjust the pH to 10 with potassium hydroxide and sulfuric acid.
20. [Color developer replenisher] Ethylene glycol 20mJ2 Potassium sulfite 3.0g Potassium carbonate
24.0g hydroxyamine sulfate 4.0g 3-methyl-4-amino-N-
Ethyl-N-(β-methanesulfonamide ethyl)aniline sulfate 7.5g Optical brightener (4,4'
-diaminostilbendisulfonic acid derivative)
25g 1-hydroxyethylindene-1,1-niphosphonic acid 0.5g hydroxyethyliminodiacetic acid 5.0g Magnesium chloride 6
Water salt 0.8g1.2-dihydroxybenzene-3,5-disulfonic acid disodium salt 0.3g
Add water to make it 1λ, then add potassium hydroxide and sulfuric acid to pH 10.
,70. [Bleach-fix tank solution] Ethylenediaminetetraacetic acid ferric ammonium dihydrate so, 0g ethylenediaminetetraacetic acid 30g ammonium thiosulfate (70% solution) 100. mfL ammonium sulfite (40% solution) Add 27.5 mu water to bring the total volume to 1°C, and adjust the pH with potassium carbonate or glacial acetic acid.
Adjust to 7.1. [Bleach-fixing replenisher A] Ethylenediaminetetraacetic acid ferric ammonium dihydrate 260.0g Potassium carbonate 42.0g Add water to bring the total amount to tfL. The pH of this solution was adjusted to 6.7 using acetic acid or aqueous ammonia.
Set to ±0.1. [Bleach-fix replenisher B] Ammonium thiosulfate 250.0 mfL (70
Ammonium sulfite 250m (40% solution) Ethylenediaminetetraacetic acid 17.0g glacial acetic acid
Add 85.0 ml water to bring the total volume to 1°C. This solution has a pH of 5.3 using acetic acid or aqueous ammonia.
It is ±0.1. [Water wash alternative stable tank fluid and replenisher coethylene glycol 1.0g 2-methyl-4-isothiazolin-3-one
020g 1-Hydroxyethylidene-1,1-niphosphonic acid (60% aqueous solution) 1.0g ammonia water (25% ammonium hydroxide aqueous solution) 2.0g Make IJ2 with water and adjust to pH 7.0 with 50% sulfuric acid. In an automatic processor. Fill the above color developer tank liquid, bleach-fix tank liquid and stable tank liquid, and add the above color developer replenisher, bleach-fix replenisher A, B and stable replenisher to the bellows while processing the commercially available color photographic vapor sample. A running test was conducted while replenishing through the pump.The replenishment amount was 190 mJ2 per 1rr of color vapor to the color developing tank, 50 mA each to the bleach-fixing tank, and 50 mA each to stabilize the bleach-fixing replenisher A and B. Add 250 mβ of stable replenisher to the seeds as an alternative to washing with water.
Replenished. In addition, the stabilization type of the automatic developing machine has the first to third stabilizing tanks in the direction of the flow of the sample, and the final tank is replenished, and the overflow liquid from the final tank is allowed to flow into the previous tank. ,. Furthermore, a multi-tank countercurrent system was adopted in which this overflow liquid also flows into the preceding tank. Continuous processing was carried out until the total amount of replenishment of the water washing substitute stabilizing solution became three times the capacity of the stabilizing tank. In addition, after each color negative film GX-100 (manufactured by Konica Corporation) was exposed in a conventional manner, using an automatic developing machine modified from a negative film processor NFS-FP34 (manufactured by Konica Corporation), the following development processing conditions were used. The process was carried out continuously. From waterless washing stability (2nd tank) to waterless washing stability (1st tank),
The countercurrent method (two-stage countercurrent) is used, and the bleach-fixing process is similarly carried out from bleach-fixing (second tank) to bleach-fixing (first tank).
A counter current method was used to flow into the tank). The amount of processing liquid brought in from the front tank of a multi-tank system is 0°6mj!
/dm'. The tank fluid and each replenisher's prescription are shown below. All color development tank liquid was mixed with potassium carbonate 30g sodium sulfite 2.0g hydroxylamine sulfate 2.0g 1-hydroxyethylidene-1,1-diphosphonic acid (60% aqueous solution) 1.0g hydroxyethyliminodiacetic acid 3.0g magnesium chloride 0 .3g potassium bromide 1.2g sodium hydroxide 3.4g N-ethylene-N-β
-Hydroxyethyl-3-methyl-4-aminoaniline hydrochloride 4.6g Water was added to make tfL, and sodium hydroxide was added p) (10
Adjusted to 1. Color developer replenisher: Potassium carbonate 40g Sodium sulfite 3.0g Hydroxylamine sulfate 3.0g Diethylenetriaminepentaacetic acid 3.0g Potassium bromide
0.9g sodium hydroxide 3
．． 4gN-ethylene-N-β-hydroxyethyl-3-
Methyl-4-aminoaniline hydrochloride 5.6g Add water to make tU, adjust pH to 1 with sodium hydroxide.
Adjusted to. Bleach-fix tank solution and replenisher; diethylenetriaminepentaacetic acid ferric ammonium salt 0.5M hydroxyethyliminodiacetic acid 20g ammonium thiosulfate (70% wt/VOU) 50mj2 ammonium sulfite 15g 2-amino-5-mercapto-1,3, 4-Thiadiazole 1.0g Aqueous ammonia (28%) IA was prepared with 20 m°C water, and the pH was adjusted to 7.6 with acetic acid and aqueous ammonia. Anhydrous wash stable tank fluid and replenisher: 5-chloro-2-methyl-4-isothiazolin-3-one 0.01g2-methyl-4
- Isothiazolin-3-one Ethylene glycol diethylene triamine Pentaacetate Finish with ferric ammonium salt solution, pH 10.0 with ammonium and sulfuric acid
Adjust to. Stable tank fluid and refill fluid. Formalin (37% wood fused night) Konidax (manufactured by Konica Corporation) Add water to finish IIt. Continuous processing was carried out until the tank replenishment amount of the color developer reached three times the capacity of the color developer tank. The color negative film and color paper waste liquid were mixed at a ratio of 1:1 and used.

[Experiment 1] When the m solution is processed using the photographic processing waste liquid processing apparatus shown in Fig. 2, there are two cases: one in which no obstruction is attached to the evaporation pot, and the other in the embodiment shown in Figs. 4 to 7. ! The BOD and COD concentrations of the condensate were measured for the example in which the PI 41, punch plate 42, flat plate 43, disk 44, and block 45 were provided. From the above results, no matter which obstacle is installed in the evaporator, the BOD value will be lower than when no obstacle is installed.
It can be seen that both the COD values are about half. (Effects of the Invention) As described above, this invention is provided with an obstacle for changing the flow of steam between the photographic processing waste liquid surface of the evaporating means and the steam outlet, so that the photographic processing waste liquid is heated and the evaporating means is heated. In the process of exiting from the photographic process, even if the steam may contain malodorous components due to bumping, the steam collides with obstacles and the malodorous components fall and are returned to the photographic processing waste liquid. Therefore, even if the steam discharged from the steam outlet of the evaporation means is condensed, the sulfur-based compounds in the condensate decrease, resulting in BOD and CO
The D concentration is suppressed, and the pollution load of the condensate can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an automatic developing machine, FIG. 2 is a diagram showing a processing apparatus for photographic processing waste liquid, and FIGS. 3 to 7 are sectional views showing other embodiments of obstacles. In the drawings, reference numeral 1 denotes an evaporating pot, 2 a heating means, 11 a condensing means, 19 a reservoir tank, 24 a waste liquid supply tank, and 40 an obstacle. Patent Applicant Konica Co., Ltd. Figure 1 Figure 2 Figure 6 Figure 7 Procedural Amendment Document March 1988 Saturday and Sunday Commissioner of the Patent Office Kunio Ogawa 1 Case Description Patent Application No. 301361 No. 301361 1988 Title of the invention Processing equipment for photographic processing waste liquid 3 Relationship with the case of the person making the amendment Patent applicant address 1-26-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Name (1)
27) Konica Co., Ltd. (Bulk name change notification submitted on December 11, 1988) 4 Agent Address: 1043 New State Menor, 2-23-1 Yoyogi, Shibuya-ku, Tokyo Telephone: 03 (375) 3740
No. 6 Target of amendment Tank (1) "r combined" on page 8, line 9 of the specification in the "detailed description of the invention" is corrected to "combined". (2) In the same book, page 10, line 15, ``r is done'' is corrected to ``take place.'' (3) In the same book, page 16, line 6, "bubbling" is corrected to "bubbling." (4) In the same book, page 16, line 20, ``Ball Pal 3'' is corrected to ``R Ball Valve 3''. (5) In the same book, page 18, line 7, "steam outlet 1a" is corrected to "steam outlet 1d." (6) "Magnesium" on page 20, line 18 of the same book is corrected to "magnesium." (7) In the same book, page 22, line 15, replace “(60% aqueous solution” with “
(60% aqueous solution)”. (8) In the same book, page 24, line 18, ``I made a method'' is corrected to ``I made a method.'' (9) "2-Methyl-4-isothiazolin-3-one" in line 5, page 27 of the same book is corrected to "2-methyl-4-isothiazolin-3-one." (10) Page 27, line 6 of the same book. "Ethylene glycol" in the row
(11) Correct “salt” in line 8 of page 27 of the same book as “ethylene glycol 2.ogJ.”
0.03 mole”. (12) In the same book, page 10, line 15, “Formalin (37%
aqueous solution)” to “formalin (31% aqueous solution) 3 mjl”
I am corrected. (13) In the same book, page 27, line 13, "Konidax (manufactured by Konica Corporation)" is corrected to "Konidax (manufactured by Konica Corporation) 7mj2". that's all

Claims (1)

[Claims] In a processing apparatus for photographic processing waste liquid stored in an evaporation means having a steam exhaust port, the photographic processing waste liquid is heated by a heating means to evaporate and concentrate, between the photographic processing waste liquid surface of the evaporation means and the steam discharge port, A processing device for photographic processing waste liquid, characterized in that it is equipped with an obstacle that changes the flow of steam.