EP0474643B1 - Developing device for photographic coating substrates - Google Patents

Developing device for photographic coating substrates Download PDF

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Publication number
EP0474643B1
EP0474643B1 EP19900906191 EP90906191A EP0474643B1 EP 0474643 B1 EP0474643 B1 EP 0474643B1 EP 19900906191 EP19900906191 EP 19900906191 EP 90906191 A EP90906191 A EP 90906191A EP 0474643 B1 EP0474643 B1 EP 0474643B1
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EP
European Patent Office
Prior art keywords
structural units
additional structural
fluid bath
bath
filter
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EP19900906191
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German (de)
French (fr)
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EP0474643A1 (en
Inventor
Heinz Heiss
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Devappa Dr Ing R Zinsser & Ing K Prestl
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Devappa Dr Ing R Zinsser & Ing K Prestl
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Priority to AT90906191T priority Critical patent/ATE91806T1/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • G03D3/065—Liquid supply; Liquid circulation outside tanks replenishment or recovery apparatus

Definitions

  • the invention relates to a developing device for photographic substrates, e.g. Film materials, photo papers, graphics, with a developer liquid, a fixing liquid and a washing liquid bath, in which the baths can be connected to a common drain collecting line and the fixing liquid bath is hydraulically permanently connected to a first structural unit for regeneration of the fixing liquid, which unit has an electrolytic cell .
  • the baths for the developer liquid, the fixing liquid and the washing liquid are emptied into a drain collecting line which opens into a collecting container and the bath liquid mixture thus obtained after neutralization by means of chemicals into to hand over a sewer.
  • the bath for the fixing liquid is connected to a processing container of a device for electrolytically recovering the silver contained in the fixing liquid, branched off in front of the drain collecting line.
  • the treatment of the bath liquid mixture with chemicals is also not to be regarded as an effective disposal measure.
  • the baths are hydraulically connected to the drain manifold for the regeneration and / or disposal of the bath fluids exclusively via three further structural units
  • the first structural unit additionally has a filter arrangement in the electrolysis cell
  • the first of the further structural units with a buffer container, one Ion exchanger and a filter arrangement is provided
  • the second of the further units is provided with an osmosis device and a prefilter
  • the first and the time of the further units are connected in series with one another via a circuit with the washing liquid bath
  • the third of the further units is a buffer tank, a circulating tank and the like has a further electrolysis cell and filter device for anodic oxidation and can be connected to the developer liquid bath and the sewage system and that the second and third of the further structural units with communicate with each other.
  • the first structural unit can have a filter arrangement in addition to the electrolytic cell and can be provided with a buffer container presented to the electrolytic cell and the filter arrangement, an activated carbon filter expediently serving as the filter arrangement.
  • the structural units forming the disposal system for the development facility allow an effective individual preparation of the bath fluids overall and, moreover, allow a combination which is appropriate for the requirements with one another and with the development facility to form a compact system.
  • the first structural unit can optionally be expanded by further electrolysis cells which are connected hydraulically in series and electrically in parallel.
  • the osmosis device and the pre-filter of the times of the further structural units are preferably assigned a storage container with or without a heat exchanger, while the first of the further structural units can be hydraulically permanently connected to an external regeneration device.
  • further training provides for the disposal of used concentrates by means of anodic oxidation.
  • the processes of the developer liquid and the fixing liquid bath as well as the process of the second of the further units open into the buffer tank of the third of the further units.
  • the waste water constituents are broken down by oxidation on the anode of the electrolytic cell of the third of the further structural units, the breakdown possibly being optimized by adding chemicals (acids / alkalis) or oxidizing agents.
  • the concentrates in the circulation area should preferably be run until the desired treatment effect is achieved.
  • the detoxification of the liquid residues allows them to be discharged into the sewage system without exceeding the limit values of the water law.
  • Fig. 1 denotes a photographic developing device having an input area 2 for Layer support, a wet area 3 with baths 10, 11, 12 (Fig. 2) for developer liquid, fixing liquid and washing liquid and a downstream dryer 4. 5 with a space for receiving electronic control means is designated.
  • the development device 1 is designed as a tabletop device, which is set up on modules 6, 7, 8, 9 (modules) integrated with the development device.
  • the units (modules) 6 to 9 serve to dispose of the waste water from toxic components and to reuse chemicals and metals contained in the waste water.
  • FIG. 2. 2 shows that the fixing liquid bath 11 is connected to the structural unit 6 via a circuit 13. It can also be seen that the washing liquid bath 12 is connected to the structural unit 7 via a further circuit 14 and further to the structural unit 8 via a bridge 15. 16 denotes an external regeneration module for the structural unit 7, while 17 is a concentration container lying against the structural unit 8.
  • the assembly 8, the developer liquid bath 10 and the fixing liquid bath 11 are in contact with the assembly 9.
  • the assembly 9 can be connected to the sewage system 20.
  • the structure of the unit 6 is shown in FIG. 3.
  • the fixing liquid bath 11 bears against a buffer tank 22 via a pipeline 13 ′, which opens out into an electrolysis cell 23 via a pump 21.
  • the electrolysis cell 23 is connected by a pipeline 24 to a filter arrangement (activated carbon filter) 25 which is connected to the fixing liquid bath 11 via a pipeline 13 ′′. It is thus possible to connect the electrolysis cell 23 to the fixing liquid bath 11 by bypassing the filter arrangement 25 by means of a solenoid valve 27.
  • the fixing liquid is kept continuously at the lowest possible level by the circulation in order to reduce the amount of replenishing solution required 6 can be expanded by a further electrolysis cell 23 (not shown) and the fixing bath liquid can be passed through a bypass 29.
  • a replenishment solution can be supplied via an additional metering pump (not shown).
  • the unit 7 of Fig. 4 shows a water cycle.
  • the washing liquid is contaminated.
  • the overflow 21 of the washing liquid bath 12 is in contact with a buffer container 31 which can be influenced by a level switch 30, from which washing liquid is drawn off by a pump 32 with a motor 32 'to a filter cartridge 33 and further supplied to ion exchangers 34 and 34'.
  • Anion exchangers are provided as ion exchangers, with charged ion exchangers being exchanged for regenerated ion exchangers and being regenerated externally.
  • 57 denotes a pressure display, while 58 represents a metering pump (option).
  • the washing liquid passes through a high-pressure pump 59 with a motor 59 'via a prefilter 36 to an osmosis device 37 which, in the exemplary embodiment, e.g. works according to the membrane process.
  • the osmosis device 37 abuts a return line 38 against an intermediate container 39 or directly against the washing liquid bath 12.
  • the concentrate of the osmosis device 37 can be returned to the supply container 35 via a line 40.
  • 17 denotes a concentration storage container connected to the storage container 35 and 42 as an option is a heat exchanger for cooling washing liquid.
  • the prefilter 36 is particularly necessary for the "open circuit" operating mode since the concentration leads to possible precipitation of the ingredients.
  • a buffer tank 43 with float switch 54 is used, which is connected via a pipe 45 to the outlet of the osmosis device 37, the outlet 19 of the developer liquid bath 10 and the outlet 19 'of the fixing liquid bath 11 (FIG. 2) stands.
  • the processes 19, 19 'from the developer liquid and fixing liquid baths 10, 11 and the process for the permeate of the osmosis device 37 are collected in the buffer container 43.
  • the concentrates are broken down in the circulation tank / electrolysis cell system.
  • a pump 48 provides for the circulation.
  • the electrolysis itself is regulated by means of a pH and redox measurement at 55 and 56 and by adding chemicals (acid / alkali or oxidizing agent) from chemical containers 51, 52 with float switches 53, 53 ' optimized.
  • the gases generated during the treatment (SO Z / NH 3 ) can be discharged via a pressure relief valve 49 and subsequently subjected to washing.
  • the concentrates are expediently run until the treatment goal, ie a minimization of the COD value, has been reached. This is determined by measuring the redox potential.
  • the assembly 9 of FIG. 6 can be applied to a sewer 20 (FIG. 2 clarifies) via a valve 50.
  • a detoxification by splitting the waste water into organic substances by anodic oxidation.

Abstract

In a developing device for photographic coating substrates, e.g. film, photographic papers and graphics, with baths for developer, fixer and washing water, for the best possible removal of the waste water and the recovery of its chemicals and metallic components, modules (6, 7, 8, 9) for preparing the liquids for re-using and/or disposal of the bath contents are in permanent hydraulic communication with the baths for developer, fixer and washing water (10, 11, 12).

Description

Die Erfindung betrifft eine Entwicklungseinrichtung für fotografische Schichtträger, z.B. Filmmaterialien, Fotopapiere, Grafiken, mit einem Entwicklerflüssigkeits-, einem Fixierflüssigkeits- und einem Waschflüssigketisbad, bei der die Bäder an eine gemeinsame Abflußsammelleitung anlegbar sind und das Fixierflüssigkeitsbad über eine Kreislaufführung mit einer ersten, eine Elektrolysezelle aufweisenden Baueinheit zur Regeneration der Fixierflüssigkeit hydraulisch permanent verbunden ist.The invention relates to a developing device for photographic substrates, e.g. Film materials, photo papers, graphics, with a developer liquid, a fixing liquid and a washing liquid bath, in which the baths can be connected to a common drain collecting line and the fixing liquid bath is hydraulically permanently connected to a first structural unit for regeneration of the fixing liquid, which unit has an electrolytic cell .

Bei einer bekannten Entwicklungseinrichtung obiger Gattung (US-A-4081816) ist vorgesehen, die Bäder für die Entwicklerflüssigkeit, der Fixierflüssigkeit und der Waschflüssigkeit in eine Abfluß-Sammelleitung zu entleeren, die in einen Sammelbehälter ausmündet und das so erhaltene Bäderflüssigkeitsgemisch nach Neutralisation vermittels Chemikalien in eine Kanalisation abzugeben. Zusätzlich steht das Bad für die Fixierflüssigkeit mit einem vor der Abfluß-Sammelleitung abgezweigten Aufbereitungsbehälter einer Vorrichtung zur elektrolytischen Wiedergewinnung des in der Fixierflüssigkeit befindlichen Silbers in Verbindung. Abgesehen davon, daß die gemeinsame Neutralisation des Bäderflüssigkeitsgemisches nur ungenau und unsicher bewirkt werden kann, ist die Behandlung des Bäderflüssigkeitsgemisches mit Chemikalien auch nicht als effektive Entsorgungsmaßnahme zu werten.In a known developing device of the above type (US-A-4081816) it is provided that the baths for the developer liquid, the fixing liquid and the washing liquid are emptied into a drain collecting line which opens into a collecting container and the bath liquid mixture thus obtained after neutralization by means of chemicals into to hand over a sewer. In addition, the bath for the fixing liquid is connected to a processing container of a device for electrolytically recovering the silver contained in the fixing liquid, branched off in front of the drain collecting line. Apart from the fact that the joint neutralization of the bath liquid mixture can only be effected inaccurately and uncertainly, the treatment of the bath liquid mixture with chemicals is also not to be regarded as an effective disposal measure.

Es ist Aufgabe der Erfindung, bei fotografischen Entwicklungseinrichtungen, die Bäderflüssigkeiten arbeitstechnisch optimal und sicher zu entsorgen und die wirtschaftlich aufwendigen Inhaltsstoffe wiederverwendbar zu machen.It is the object of the invention to dispose of the bath fluids optimally and safely in photographic processing devices and to make the economically complex ingredients reusable.

Erfindungsgemäß ist hierzu vorgesehen, daß die Bäder ausschließlich über drei weitere Baueinheiten mit der Abflußsammelleitung für die Regeneration und/oder Entsorgung der Bäderflüssigkeiten hydraulisch verbunden sind, die erste Baueinheit zusätzlich in der Elektrolysezlle eine Filteranordnung aufweist, die erste der weiteren Baueinheiten mit einem Pufferbehälter, einem Jonenaustauscher und einer Filteranordnung versehen ist, die zweite der weiteren Baueinheiten mit einer Osmoseeinrichtung und einem Vorfilter versehen ist, die erste und die zeite der weiteren Baueinheiten seriell miteinander über eine Kreislaufführung mit dem Waschflüssigkeitsbad verbunden sind, die dritte der weiteren Baueinheiten einen Pufferbehälter, einen Umwälzbehältersowie eine weitere Elektrolysezelle und Filtereinrichtung zuranodischen Oxydation aufweist und mit dem Entwicklerflüssigkeitsbad sowie der Kanalisation verbindbar ist und daß die zweite und die dritte der weiteren Baueinheiten miteinander in Verbindung stehen. Hierbei kann die erste Baueinheit zusätzlich zu der Elektrolysezelle eine Filteranordnung aufweisen und mit einem der Elektrolysezelle und der Filteranordnung vorgestellten Pufferbehälter versehen sein, wobei als Filteranordnung zweckmäßig ein Aktivkohlefilter dient. Die das Entsorgungssystem für die Entwicklungseinrichtungr bildenden Baueinheiten lassen insgesamt eine wirkungsvolle Einzelaufbereitung der Bäderflüssigkeiten zu und erlauben darüberhinaus eine den Anforderungen entsprechende Kombinierung miteinander und mit der Entwicklungseinrichtung unter Bildung einer kompakten Anlage. Es entspricht der Erfindung, daß die erste Baueinheit gegebenenfalls um weitere Elektrolysezellen, die insbesondere hydraulisch miteinander in Reihe und elektrisch parallel geschaltet sind, erweitert werden kann.According to the invention, it is provided that the baths are hydraulically connected to the drain manifold for the regeneration and / or disposal of the bath fluids exclusively via three further structural units, the first structural unit additionally has a filter arrangement in the electrolysis cell, the first of the further structural units with a buffer container, one Ion exchanger and a filter arrangement is provided, the second of the further units is provided with an osmosis device and a prefilter, the first and the time of the further units are connected in series with one another via a circuit with the washing liquid bath, the third of the further units is a buffer tank, a circulating tank and the like has a further electrolysis cell and filter device for anodic oxidation and can be connected to the developer liquid bath and the sewage system and that the second and third of the further structural units with communicate with each other. In this case, the first structural unit can have a filter arrangement in addition to the electrolytic cell and can be provided with a buffer container presented to the electrolytic cell and the filter arrangement, an activated carbon filter expediently serving as the filter arrangement. The structural units forming the disposal system for the development facility allow an effective individual preparation of the bath fluids overall and, moreover, allow a combination which is appropriate for the requirements with one another and with the development facility to form a compact system. It is in accordance with the invention that the first structural unit can optionally be expanded by further electrolysis cells which are connected hydraulically in series and electrically in parallel.

In Ausbildung der Entwicklungseinrichtung ist vorgesehen, der Osmoseeinrichtung und dem Vorfilter der zeiten der weiteren Baueinheiten bevorzugt einen Vorlagebehälter mit oder ohne Wärmetauscher zuzuordnen, während die erste der weiteren Baueinheiten mit einer externen Regeneriereinrichtunghydraulisch permanent verbindbar ist.In the development of the development device, it is provided that the osmosis device and the pre-filter of the times of the further structural units are preferably assigned a storage container with or without a heat exchanger, while the first of the further structural units can be hydraulically permanently connected to an external regeneration device.

Schließlich ist in weiterer Ausbildung noch vorgesehen, die Entsorgung verbrauchter Konzentrate vermittels anodischer Oxydation vorzunehmen. Hierzu münden die Abläufe des Entwicklerflüssigkeits- und des Fixierflüssigkeitsbads sowie der Ablauf der zweiten der weiteren Baueinheiten in den Pufferbehälter der dritten der weiteren Baueinheiten aus. Der Abbau derAbwasserinhaitsstoffe erfolgt durch Aufoxydation an der Anode der Elektrolysezelle der dritten der weiteren Baueinheiten, wobei gegebenenfalls durch Zugabe von Chemikalien (Säuren/Laugen) bzw. Oxydationsmitteln der Abbau optimierbar ist. Bevorzugt sind die Konzentrate im Umwälzbereich so lange zu fahren, bis sich der gewünschte Behandlungseffekt einstellt. Die erzielte Entgiftung der flüssigen Rückstände erlaubt deren Abführung in die Kanalisation ohne daß hierbei Grenzwerte des Wasserrechts überschritten werden.Finally, further training provides for the disposal of used concentrates by means of anodic oxidation. For this purpose, the processes of the developer liquid and the fixing liquid bath as well as the process of the second of the further units open into the buffer tank of the third of the further units. The waste water constituents are broken down by oxidation on the anode of the electrolytic cell of the third of the further structural units, the breakdown possibly being optimized by adding chemicals (acids / alkalis) or oxidizing agents. The concentrates in the circulation area should preferably be run until the desired treatment effect is achieved. The detoxification of the liquid residues allows them to be discharged into the sewage system without exceeding the limit values of the water law.

Wie die Erfindung ausführbar ist, verdeutlichen die in der Zeichnung dargestellten Ausführungsbeispiele. Es zeigen:

  • Fig. 1 eine Entwicklungseinrichtung mit integrierten Baueinheiten (Modulen), perspektivisch,
  • Fig. 2 eine Entwicklungseinrichtung mit einer modularen Entsorgungsanlage, schematisch.
  • Fig. 3 ein Fließschema einer Baueinheit (Modul) zur Fixierbadflüssigkeitsentsilberung
  • Fig. 4 und 5 Fließschemen von Baueinheiten (Modulen) mit Wasserkreislaufführung und
  • Fig. 6 ein Fließschema einer Baueinheit (Modul) zur Entsorgung verbrauchter Konzentrate.
The exemplary embodiments illustrated in the drawing illustrate how the invention can be carried out. Show it:
  • 1 is a development device with integrated modules (modules), in perspective,
  • Fig. 2 shows a development device with a modular disposal system, schematically.
  • Fig. 3 is a flow diagram of a unit (module) for fixer liquid desilvering
  • 4 and 5 flow diagrams of units (modules) with water circulation and
  • Fig. 6 is a flow diagram of a unit (module) for the disposal of used concentrates.

In Fig. 1 ist mit 1 eine fotografische Entwicklungseinrichtung bezeichnet, die einen Eingabebereich 2 für Schichtträger, einen Naßbereich 3 mit Bädern 10, 11, 12 (Fig. 2) für Entwicklerflüssigkeit, Fixierflüssigkeit und Waschflüssigkeit sowie einen nachgeschalteten Trockner 4 aufweist. Mit 5 ist ein Raum für die Aufnahme von elektronischen Steuerungsmitteln bezeichnet. Beim Ausführungsbeispiel ist die Entwicklungseinrichtung 1 als Tischgerät ausgebildet, die auf mit der Entwicklungseinrichtung integrierten Baueinheiten 6, 7, 8, 9, (Modulen) aufgestellt ist. Die Baueinheiten (Module) 6 bis 9 dienen der Entsorgung der Abwässer von giftigen Bestandteilen und der Wiederverwendbarmachung von in den Abwässern enthaltenen Chemikalien und Metallen.In Fig. 1, 1 denotes a photographic developing device having an input area 2 for Layer support, a wet area 3 with baths 10, 11, 12 (Fig. 2) for developer liquid, fixing liquid and washing liquid and a downstream dryer 4. 5 with a space for receiving electronic control means is designated. In the exemplary embodiment, the development device 1 is designed as a tabletop device, which is set up on modules 6, 7, 8, 9 (modules) integrated with the development device. The units (modules) 6 to 9 serve to dispose of the waste water from toxic components and to reuse chemicals and metals contained in the waste water.

Das Zusammenwirken des Naßbereichs der Entwicklungseinrichtung 1 mit den Baueinheiten (Modulen) 6 bis 9 ist schematisch in Fig. 2 verdeutlicht. Die Fig. 2 zeigt, daß das Fixierflüssigkeitsbad 11 über eine Kreislaufführung 13 mit der Baueinheit 6 in Verbindung steht. Außerdem ist erkennbar, daß das Waschflüssigkeitsbad 12 über eine weitere Kreislaufführung 14 an der Baueinheit 7 und weiter über eine Brücke 15 mit der Baueinheit 8 verbunden ist. Mit 16 ist ein externes Regeneriermodul für die Baueinheit 7 bezeichnet, während 17 ein an der Baueinheit 8 anliegender Konzentrationsbehälter ist. Die Baueinheit 8, das Entwicklerflüssigkeitsbad 10 sowie das Fixierflüssigkeitsbad 11 liegen an die Baueinheit 9 an. Die Baueinheit 9 ist mit der Kanalisation 20 verbindbar.The interaction of the wet area of the developing device 1 with the structural units (modules) 6 to 9 is illustrated schematically in FIG. 2. 2 shows that the fixing liquid bath 11 is connected to the structural unit 6 via a circuit 13. It can also be seen that the washing liquid bath 12 is connected to the structural unit 7 via a further circuit 14 and further to the structural unit 8 via a bridge 15. 16 denotes an external regeneration module for the structural unit 7, while 17 is a concentration container lying against the structural unit 8. The assembly 8, the developer liquid bath 10 and the fixing liquid bath 11 are in contact with the assembly 9. The assembly 9 can be connected to the sewage system 20.

Der Aufbau der Baueinheit 6 ist in Fig. 3 wiedergegeben. Das Fixierflüssigkeitsbad 11 liegt über eine Rohrleitung 13' an einem Pufferbehälter 22 an, der über eine Pumpe 21 an eine Elektrolysezelle 23 ausmündet. Die Elektrolysezelle 23 ist durch eine Rohrleitung 24 mit einer Filteranordnung (Aktivkohlefilter) 25 verbunden, die über eine Rohrleitung 13" an das Fixierflüssigkeitsbad 11 liegt. Mit 26'sind Rohrblenden bezeichnet, während Magnetventile 27 und Absperrhähne 28 die Durchlässe in den Rohrleitungen öffnen bzw. schließen. So ist möglich über ein Magnetventil 27 die Elektrolysezelle 23 unter Umgehung der Filteranordnung 25 mit dem Fixierflüssigkeitsbad 11 zu verbinden. Die Fixierflüssigkeit wird durch die Kreislaufführung kontinuierlich auf ein möglichst niedriges Niveau gehalten um die erforderliche Menge an Auffrischerlösung zu reduzieren. Gegebenenfalls ist die Baueinheit 6 um eine weitere Elektrolysezelle 23 (nicht gezeigt) erweiterbar und die Fixierbadflüssigkeit über einen Bypass 29 zu fahren. Die Zuführung einer Auffrischeriösung kann über eine zusätzliche Dosierpumpe (nicht gezeigt) erfolgen.The structure of the unit 6 is shown in FIG. 3. The fixing liquid bath 11 bears against a buffer tank 22 via a pipeline 13 ′, which opens out into an electrolysis cell 23 via a pump 21. The electrolysis cell 23 is connected by a pipeline 24 to a filter arrangement (activated carbon filter) 25 which is connected to the fixing liquid bath 11 via a pipeline 13 ″. It is thus possible to connect the electrolysis cell 23 to the fixing liquid bath 11 by bypassing the filter arrangement 25 by means of a solenoid valve 27. The fixing liquid is kept continuously at the lowest possible level by the circulation in order to reduce the amount of replenishing solution required 6 can be expanded by a further electrolysis cell 23 (not shown) and the fixing bath liquid can be passed through a bypass 29. A replenishment solution can be supplied via an additional metering pump (not shown).

Die Baueinheit 7 der Fig. 4 zeigt eine Wasserkreislaufführung. Infolge Einschleppungen von Chemikalien aus dem Fixierflüssigkeitsbad 11 und Verunreinigungen vom Entwicklerflüssigkeitsbad 10 in das Waschflüssigkeitsbad 12 ist die Waschflüssigkeit schadstoffbelastet. Der Überlauf 21 des Waschflüssigkeitsbades 12 liegt an einem durch einen Niveau-Schalter 30 beeinflußbaren Pufferbehälter 31 an, von dem Waschflüssigkeit durch eine Pumpe 32 mit Motor 32' an eine Filterkatusche 33 abgezogen wird und weiter Ionenaustauschern 34 und 34' zugeführt wird. Als Ionenaustauscher sind Anionenaustauscher vorgesehen, wobei beladene lonenaustauscher gegen regenerierte lonenaustauscher ausgetauscht und extern regeneriert werden. Mit 57 ist eine Druckanzeige bezeichnet, während 58 eine Dosierpumpe (Option) darstellt. Der Ablauf der Ionenaustauscher 34, 34' liegt einerseits an einer externen Regeneriereinrichtung 16 (Fig. 2) und andererseits an einen Vorlagebehälter 35 der Baueinheit 8 gemäß Fig. 5 an. Von diesem gelangt die Waschflüssigkeit durch eine Hochdruckpumpe 59 mit Motor 59' über einen Vorfilter 36 zu einer Osmoseeinrichtung 37, die beim Ausführungsbeispiel, z.B. nach dem Membranverfahren arbeitet. Die Osmoseeinrichtung 37 liegt über eine Rückleitung 38 an einen Zwischenbehälter 39 bzw. unmittelbar an das Waschflüssigkeitsbad 12 an. Das Konzentrat der Osmoseinrichtung 37 kann über eine Leitung 40 in den Vorlagebehälter 35 zurückgeführt werden. Mit 17 ist ein mit dem Vorlagebehälter 35 verbundener Konzentrationsaufbewahrungsbehälter bezeichnet und mit 42 ist als Option ein Wärmetauscher zur Kühlung von Waschflüssigkeit. Der Vorfilter 36 ist insbesondere für die Betriebsart "offener Kreislauf' notwendig, da es durch die Aufkonzentration zu möglichen Ausfällungen der Inhaltsstoffe kommt.The unit 7 of Fig. 4 shows a water cycle. As a result of the introduction of chemicals from the fixing liquid bath 11 and impurities from the developer liquid bath 10 into the washing liquid bath 12, the washing liquid is contaminated. The overflow 21 of the washing liquid bath 12 is in contact with a buffer container 31 which can be influenced by a level switch 30, from which washing liquid is drawn off by a pump 32 with a motor 32 'to a filter cartridge 33 and further supplied to ion exchangers 34 and 34'. Anion exchangers are provided as ion exchangers, with charged ion exchangers being exchanged for regenerated ion exchangers and being regenerated externally. 57 denotes a pressure display, while 58 represents a metering pump (option). The flow of the ion exchangers 34, 34 'is on the one hand against an external regeneration device 16 (FIG. 2) and on the other hand against a storage container 35 of the assembly 8 according to FIG. 5. From this, the washing liquid passes through a high-pressure pump 59 with a motor 59 'via a prefilter 36 to an osmosis device 37 which, in the exemplary embodiment, e.g. works according to the membrane process. The osmosis device 37 abuts a return line 38 against an intermediate container 39 or directly against the washing liquid bath 12. The concentrate of the osmosis device 37 can be returned to the supply container 35 via a line 40. 17 denotes a concentration storage container connected to the storage container 35 and 42 as an option is a heat exchanger for cooling washing liquid. The prefilter 36 is particularly necessary for the "open circuit" operating mode since the concentration leads to possible precipitation of the ingredients.

Bei der Baueinheit 9 der Fig. 6 findet ein Pufferbehälter 43 mit Schwimmerschalter 54 Anwendung, der über eine Rohrleitung 45 mit dem Ausgang der Osmoseeinrichtung 37, dem Ausgang 19 des Entwicklerflüsigrkeitsbades 10 und dem Ausgang 19' des Fixierflüssigrkeitsbades 11 (Fig. 2) in Verbindung steht. Mit 46 ist ein Umwälzbehälter mit Schwimmerschalter 54' bezeichnet, an dem sich eine weitere Elektrolysezelle 23' und ein Filter 47 anschließen. Die Abläufe 19,19' aus den Entwicklerflüssigkeits- und Fixierflüssigkeitsbädern 10,11 sowie der Ablauf für das Permeat der Osmoseeinrichtung 37 werden im Pufferbehälter 43 gesammelt. Der Abbau der Konzentrate erfolgt im System Umwälzbehälter/Elektrolysezelle. Für die Umwälzung sorgt eine Pumpe 48. Die Elektrolyse selbst wird über eine pH - und Redox-Messung bei 55 und 56 geregelt und durch Zugabe von Chemikalien (Säure/Lauge, bzw. Oxydationsmittel) aus Chemikalien behältern 51,52 mit Schwimmerschalter53, 53' optimiert. Die bei der Behandlung entstehenden Gase (SOZ/NH3) können über ein Überdruckventil 49 abgelassen und nachfolgend einer Wäsche unterzogen werden. Der Filter 47 in der Umwälzleitung 49' verhindert eine Verschlammung der Elektrolysezelle 23'. Die Konzentrate werden im Umwälzbetrieb zweckmäßig so lange gefahren, bis das Behandlungsziel, d.h. eine Minimierung des CSB-Wertes erreicht ist. Dieser wird mit der Messung des Redox-Potentials festgelegt. Die Baueinheit 9 der Fig. 6 ist über ein Ventil 50 an eine Kanalisation 20 (Fig. 2 verdeutlicht) anlegbar. Vermittels der Baueinheit 9 erfolgt eine Entgiftung durch Aufspaltung der Abwässer in organische Substanzen durch anodische Oxydation.6, a buffer tank 43 with float switch 54 is used, which is connected via a pipe 45 to the outlet of the osmosis device 37, the outlet 19 of the developer liquid bath 10 and the outlet 19 'of the fixing liquid bath 11 (FIG. 2) stands. With 46 a circulation tank with float switch 54 'is designated, to which a further electrolysis cell 23' and a filter 47 are connected. The processes 19, 19 'from the developer liquid and fixing liquid baths 10, 11 and the process for the permeate of the osmosis device 37 are collected in the buffer container 43. The concentrates are broken down in the circulation tank / electrolysis cell system. A pump 48 provides for the circulation. The electrolysis itself is regulated by means of a pH and redox measurement at 55 and 56 and by adding chemicals (acid / alkali or oxidizing agent) from chemical containers 51, 52 with float switches 53, 53 ' optimized. The gases generated during the treatment (SO Z / NH 3 ) can be discharged via a pressure relief valve 49 and subsequently subjected to washing. The filter 47 in the circulation line 49 'prevents silting up of the electrolysis cell 23'. In the circulating mode, the concentrates are expediently run until the treatment goal, ie a minimization of the COD value, has been reached. This is determined by measuring the redox potential. The assembly 9 of FIG. 6 can be applied to a sewer 20 (FIG. 2 clarifies) via a valve 50. By means of the structural unit 9 a detoxification by splitting the waste water into organic substances by anodic oxidation.

Claims (6)

1. Developer for photographic layer carriers, e.g. film materials, photographic papers and graphics, having a developing fluid bath (10), a fixing fluid bath (11) and a washing fluid bath (12), wherein the baths are attachable to a common discharge collecting pipe (20), and the fixing fluid bath (11) is permanently hydraulically connected, via a recycling conduit, to a first structural unit (6) provided with an electrolytic cell (23) for regenerating the fixing fluid, characterised in that the baths (10,11,12) are hydraulically connected, exclusively via three additional structural units (7,8,9), to the discharge collecting pipe (20) for the regeneration and/or removal of the bath fluids,
- the first structural unit (6) has a filter arrangement (25) in addition to the electrolytic cell (23);
- the first (7) of the additional structural units is provided with a buffer container (31 an ion exchanger (34,34') and a filter arrangement (33);
- the second (8) of the additional structural units is provided with an osmosis device (37) and a preliminary filter (36);
- the first (7) and the second (8) of the additional structural units are connected to the washing fluid bath (12) in series with one another via a recycling conduit;
- the third (9) of the additional structural units has a buffer container (43), a circulating container (46) and an additional electrolytic cell (23') and filtering means (47) for anodic oxidation and is connectable to the developing fluid bath (10) and the conduit system (20); and in that
- the second (8) and the third (9) of the additional structural units are interconnected with one another.
2. Developer according to claim 1, characterised in that the first structural unit (6) has a buffer container (22), which is situated in front of the electrolytic cell (23) and the filter arrangement (25).
3. Developper according to claims 1 and 2, characterised in that the filter arrangement (25) is formed by an active carbon filter.
4. Developer according to claim 1, characterised in that a collecting vessel (35), with or without a heat exchanger, is associated with the osmosis device (37) and the preliminary filter (36) of the second (8) of the additional structural units.
5. Developer according to claim 1, characterised in that the first (7) of the additional structural units is permanently hydraulically connectable to an external regenerator device (16).
6. Developer according to claim 1, characterised in that the outlets (19,19') of the developing fluid bath (10) and of the fixing fluid bath (11), as well as the outlet (45) of the second (8) of the additional structural units, discharge into the buffer container (43) of the third (9) of the additional structural units.
EP19900906191 1990-04-19 1990-04-19 Developing device for photographic coating substrates Expired - Lifetime EP0474643B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90906191T ATE91806T1 (en) 1990-04-19 1990-04-19 DEVELOPMENT EQUIPMENT FOR PHOTOGRAPHIC COATINGS.

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Application Number Priority Date Filing Date Title
PCT/EP1990/000633 WO1991016667A1 (en) 1990-04-19 1990-04-19 Developing device for photographic coating substrates

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EP0474643A1 EP0474643A1 (en) 1992-03-18
EP0474643B1 true EP0474643B1 (en) 1993-07-21

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FR2695218B1 (en) * 1992-08-25 1994-09-30 Kis Photo Ind Method and device for treating the washing baths of an automatic installation for developing negative films and photographic prints on paper.
DE4303379A1 (en) * 1993-02-05 1994-08-11 Du Pont Deutschland Process and apparatus for washing water recycling in photographic processing
GB9318364D0 (en) * 1993-09-04 1993-10-20 Horsell Graphic Ind Ltd Image plate processor

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DE2361151B2 (en) * 1973-12-07 1980-05-08 Agfa-Gevaert Ag, 5090 Leverkusen Process for the preparation of the effluents in photographic development processes and device for carrying out the process
JPS58111945A (en) * 1981-12-25 1983-07-04 Tokuyama Soda Co Ltd Rinsing method for film or photographic paper
DE3345346A1 (en) * 1983-12-15 1985-06-27 Fa. Stadler, 7963 Altshausen METHOD FOR RECOVERING USED PHOTOGRAPHIC FILMS AND LIQUIDS

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EP0474643A1 (en) 1992-03-18
WO1991016667A1 (en) 1991-10-31

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