EP0264596A1 - Procédé d'épuration de la lessive provenant de machines de nettoyage - Google Patents

Procédé d'épuration de la lessive provenant de machines de nettoyage Download PDF

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Publication number
EP0264596A1
EP0264596A1 EP87112794A EP87112794A EP0264596A1 EP 0264596 A1 EP0264596 A1 EP 0264596A1 EP 87112794 A EP87112794 A EP 87112794A EP 87112794 A EP87112794 A EP 87112794A EP 0264596 A1 EP0264596 A1 EP 0264596A1
Authority
EP
European Patent Office
Prior art keywords
sludge
lye
cleaning machines
tank
caustic solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87112794A
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German (de)
English (en)
Other versions
EP0264596B1 (fr
Inventor
Axel Mäueler
Marten Dr. Brunk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Turbon-Tunzini Klimatechnik GmbH
Original Assignee
Turbon-Tunzini Klimatechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6310949&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0264596(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Turbon-Tunzini Klimatechnik GmbH filed Critical Turbon-Tunzini Klimatechnik GmbH
Priority to AT87112794T priority Critical patent/ATE47126T1/de
Publication of EP0264596A1 publication Critical patent/EP0264596A1/fr
Application granted granted Critical
Publication of EP0264596B1 publication Critical patent/EP0264596B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought

Definitions

  • the invention relates to a method for disposing of lye from cleaning machines, in particular bottle cleaning machines, by the lye being emptied discontinuously into associated sedimentation tanks, with sedimentation of the floating parts being caused after several hours, so that approximately 90% of the sediment is deposited from the lye, whereupon the largely cleaned lye is pumped out of the upper part of the sedimentation tanks and fed back to the cleaning machines, while the remaining highly alkaline sludge is disposed of.
  • DE 27 23 004 A1 discloses a method for increasing the lye service life in cleaning machines in which the objects to be cleaned are passed through at least one cleaning bath containing lye and kept at an elevated temperature, the lye from the first cleaning bath holding the objects to be cleaned Dirt is removed in a continuous circulation via separators, so that the amount of lye flow conducted via a circuit containing the separator corresponds to an hourly conversion of approximately the total amount of lye in the first cleaning bath up to a multiple of this total amount and the concentration of the cleaned part of the lye before Reintroducing into the first cleaning bath to control the addition of detergent to this bath is continuously measured and the replenishment of the amount of liquid by introducing liquid into the first cleaning bath under control by measuring the suds level in this bath leads.
  • the known method has the disadvantage that the use of a separator in the cleaning system does not ensure that the alkali loss is kept as low as possible.
  • DE 27 25 562 A1 also states that the amount of alkali flow in the circuit containing the separator is reduced to a value which corresponds to an hourly conversion of only a fraction, preferably one third, of the total amount of alkali in the first cleaning bath.
  • This known method also has the disadvantage that the loss of alkali is not particularly important.
  • DE 29 20 737 A1 discloses a method for cleaning and recovering working liquids drained from bottle washing machines, in which an oxidizing agent is added to the wash liquor in the pre-soak and then the oxidized pollutant particles are separated out by filtration so that those still remaining in the liquor Pollutants are selectively flocculated by a flocculant added to the wash liquor and then filtered out, whereupon the so washed wash liquor is returned to the bottle washing machine.
  • the known method specifies measures for cleaning the wash liquor, but the process has the disadvantage that the disposal of the resulting contaminants in the wash liquor is not taken into account.
  • the invention is based on the object of specifying a method for disposing of alkali from cleaning machines, in which the alkali loss during the discharge of the resulting contaminants is kept as low as possible.
  • the object is achieved in a generic method by the characterizing features of claim 1.
  • the use of a thickening system ensures that the entire dirt and sediment portion is concentrated, which can then be disposed of as puncture-proof sediment. Due to the strong concentration of the dirt and sediment in the thickener, the alkali loss is kept low, because the thick sludge that is collected hardly contains any detergent solution.
  • the neutralization system provided according to claim 2 also grants that the puncture-resistant sediment finally obtained is disposed of to the extent that it can be stored as normal waste in any landfill.
  • the wash liquors from four bottle cleaning machines 11, 12, 13, 14 of the cleaning system 10 operated simultaneously with lye baths of different sizes are discharged into sedimentation tanks 21, 22, 23, 24 of the sedimentation plant 20 arranged at the end of the shift.
  • the sedimentation tanks 21, 22, 23, 24 have a cylindrical-conical design and are provided with an approximately 100 mm thick thermal insulation under VA sheet.
  • alkali exchanger principle Since one of the systems mainly cleans reusable aluminum-foil bottles, the so-called alkali exchanger principle is used in the exemplary embodiment.
  • the aluminum-loaded alkali is only run in the system for one day and used in a normal / Euro bottle system the next day.
  • the lye filling of the individual bottle cleaning machines 11, 12, 13, 14 is emptied via shut-off valves, not shown, which are provided with feedback for the open and closed position of the valves.
  • the sedimentation tank 21, 22, 23, 24 is selected by the operating personnel via an on-site control box on the respective bottle cleaning machine 11, 12, 13, 14, which is also not shown, and which is to be assigned to the corresponding bottle cleaning machine, the associated electro-pneumatic valve being opened that is also not shown.
  • bottle washers can now only carry lightly soiled lye with small particles, while other bottle washers carry considerable dirt loads up to large pieces of broken glass, bottle caps and labels.
  • belt sieve dirt discharge systems 15, 16, 17, 18, for example chain conveyor systems are set up directly next to the bottle cleaning machines 11, 12, 13, 14, to which the amounts of alkali flow by gravity in order to remove coarse contaminants carried along from the sedimentation tanks 21, 22, 23, 24 to keep away.
  • the respective belt sieve dirt discharge system is switched on by the respective on-site control boxes in order to discharge the existing coarse dirt.
  • the corresponding sedimentation tank must be selected beforehand using the corresponding on-site control box so that the valves are open.
  • the bottle washers are emptied one after the other since only one drain rail 19 is available.
  • the total drainage time is about 120 minutes, depending on the volume of the lye in the bottle washers, which can vary depending on the machine.
  • a flashing light can illuminate in the on-site control box via an empty signal probe (not shown).
  • the shut-off valve is then to be closed by the operating personnel, the limit switches attached to the valve switching off the flashing light (not shown).
  • the other bottle washers can now be emptied one after the other in the same way.
  • the lye is fed to the bottle cleaning machine selected first, the pump delivering until the preselected lye holding volume of the corresponding bottle cleaning machine is reached.
  • a probe is advantageously attached to each bottle washer, which the Lye level indicator and gives a signal when the preselected lye level is reached, so that the filling valve (not shown) is switched off and at the same time the next bottle washer is released for filling by opening the corresponding filling valve.
  • the filling is carried out as described above via a filler rail 25 and ends when the respective target eye level is reached.
  • a filler rail 25 ends when the respective target eye level is reached.
  • the return pump is switched off when a minimum fill level in the corresponding sedimentation tank is reached and the corresponding fill valve on the bottle washer is closed in order to prevent the return pump from running dry.
  • the remaining sediments are withdrawn tank-wise via a discharge rail 26 during the working shift in which the cleaning liquors are located in the bottle cleaning machines 11, 12, 13, 14 and are fed to a thickening system 30 with a thickening tower 31 by means of a pump, for example a diaphragm pump, which is also not shown.
  • the thickening tower 31 is also essentially a cylindrical-conical tank container. The incoming sediment is led to the bottom area of the container via internal internals and then led upwards again via an inner pipe. The overflow is located on the side in the upper area of the tank.
  • a further sedimentation in the cone area of the thickening tower 31 is achieved via the displacement flow caused.
  • the overflowing liquor is fed to a cleaning liquor tank 32. From there, the cleaned lye is pumped back into the sedimentation tank with the largest usable volume.
  • the essentially cleaned lye collected here is used for the next return of the lye to the bottle cleaning machines to supplement the sediment losses.
  • the highly alkaline sludge that collects in the cone area of the thickening tower 31 is drawn off once a week, so that the entire alkali cycle only has to be supplemented by this volume.
  • the sludge collecting in the thickening tower 31 is conveyed once a week into a neutralization container 33 with the aid of a thick matter pump (not shown).
  • the neutralization container is provided with a cold water connection 34 and an agitator in order to thin out the thick mass and lower the temperature accordingly.
  • the process step serves to relieve the downstream neutralization pump, which is also not shown.
  • the thinned sludge is neutralized in the transfer pumping process via downstream pipe loops of a pipe reactor 35 with controlled addition of CO2 gas via a pipe 36.
  • the initial pH of approximately 13.7 is reduced to a pH of 9 by the addition of CO2 .
  • the pH value is reduced by automatic control via a conductivity measuring station, not shown.
  • the sludge is prepared for subsequent disposal.
  • the processed thin sludge in the neutralization container 33 is disposed of via a three-way valve to sieve containers 37.
  • a coagulator 38 for the addition of flocculant is installed in the pipeline required for this.
  • the flocculant a polymeric electrolyte
  • the flocculant is previously prepared in a flocculant dissolving station 39 with the proportional addition of water and mixed uniformly by means of an agitator.
  • the flocculant is processed at the same time as the neutralization phase, so that disposal in the sieve containers 37, 40 can take place immediately after the neutralization of the thinned sludge has ended.
  • the flocculant is metered by means of a metering pump (not shown) proportional to the amount of neutralized sludge to be disposed of.
  • the sludge mixed with the flocculant is then fed directly to the sieve container 37.
  • the sieve container is a standardized waste container with a water-permeable lining on the inside. A separation into solid and liquid takes place in the container Phase initially by gravity. The solid phase is retained in the sieve container, while the liquid phase, namely neutralized, relatively clean waste water, passes through the lining and is fed to the sewage system via a drain.
  • the sludge remaining in the container becomes puncture-proof within 24 hours and can be disposed of in a normal landfill.
  • a further tank of the same design is installed as a manipulation and neutralization tank 27.
  • the main functions of this tank are as follows; it serves as a replacement tank if a sedimentation tank fails; it also serves as a disposal tank for the rapid disposal of a complete caustic bath in a bottle washer in the event of overdosing or excessive soiling; it also serves for the possible absorption of pure liquor from the clean liquor container 32, which is connected downstream of the thickening tower 31.
  • the lye In order to avoid faulty switching when emptying the bottle washer, the lye is first drained into a pre-selected sedimentation tank.
  • the manipulation tank can then be filled with a recirculation rail 28 using the lye return pump. This pumping-over process is a manual process and, for safety reasons, cannot be carried out via the automatic system.
  • neutralization is initially provided. It is carried out as described above in the pumping process via a tubular reactor 29 with the controlled addition of CO2 gas. By adding cold water, the temperature is reduced according to the intended limits, so that wastewater disposal can then be carried out without any problems.
  • the sediment remaining in the container is then disposed of via the thickening tower.
  • the entire disposal may be carried out gradually using the upstream sedimentation tanks.
  • a freely programmable system can be used for regulating and controlling the cleaning system 10.
  • the individual regulation and control circuits can be divided into three operating levels, namely on-site control boxes for the bottle washers; Main switch boxes for the sedimentation tank system; Switch boxes for the thickening system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Cleaning In General (AREA)
EP87112794A 1986-10-03 1987-09-02 Procédé d'épuration de la lessive provenant de machines de nettoyage Expired EP0264596B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87112794T ATE47126T1 (de) 1986-10-03 1987-09-02 Verfahren zum entsorgen von lauge aus reinigungsmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863633652 DE3633652A1 (de) 1986-10-03 1986-10-03 Verfahren zum entsorgen von lauge aus reinigungsmaschinen
DE3633652 1986-10-03

Publications (2)

Publication Number Publication Date
EP0264596A1 true EP0264596A1 (fr) 1988-04-27
EP0264596B1 EP0264596B1 (fr) 1989-10-11

Family

ID=6310949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112794A Expired EP0264596B1 (fr) 1986-10-03 1987-09-02 Procédé d'épuration de la lessive provenant de machines de nettoyage

Country Status (3)

Country Link
EP (1) EP0264596B1 (fr)
AT (1) ATE47126T1 (fr)
DE (2) DE3633652A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1468753A1 (fr) * 2003-04-17 2004-10-20 Chemische Fabrik Dr. Weigert GmbH & Co. KG. Procédé pour nettoyer des bouteilles dans une machine de lavage de bouteilles
EP2489438A3 (fr) * 2011-02-17 2014-08-06 Krones AG Décharge magnétique depuis des machines de nettoyage de bouteilles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040944C2 (de) * 1990-12-20 1995-09-07 Wacker Chemie Gmbh Verfahren zur Reinigung von Behältern
DE102009056726B4 (de) 2009-12-04 2012-02-02 Khs Gmbh Verfahren und Vorrichtung zur Aufbereitung von im Zuge einer Behälterreinigung anfallender Prozessflüssigkeit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391152A1 (fr) * 1977-05-21 1978-12-15 Seitz Werke Gmbh Procede et appareil pour augmenter la duree d'usage d'une lessive dans des machines a nettoyer, en particulier dans des machines a nettoyer les bouteilles
DE2738134B1 (de) * 1977-08-24 1979-02-08 Vaw Ver Aluminium Werke Ag Verfahren zur Reinigung von verduennten Natronlaugen
FR2409787A1 (fr) * 1977-11-29 1979-06-22 Sick Kg Otto Procede et dispositif pour la separation de matieres polluantes dissoutes dans des lessives de lavage
DE2920737A1 (de) * 1979-05-22 1980-12-04 Sick Peter Verfahren und vorrichtung zum reinigen und wiedergewinnen von aus flaschenreinigungsmaschinen abgelassenen arbeitsfluessigkeiten
FR2522317A1 (fr) * 1982-03-01 1983-09-02 Seitz Enzinger Noll Masch Procede pour diminuer la quantite de substances nocives penetrant dans les eaux usees de machines de nettoyage de recipients, et machine de nettoyage de recipients pour la mise en oeuvre de ce procede

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723004A1 (de) * 1977-05-21 1978-11-23 Seitz Werke Gmbh Verfahren und vorrichtung zum erhoehen der standzeit von lauge in reinigungsmaschinen, insbesondere flaschenreinigungsmaschinen
DE2725562A1 (de) * 1977-06-07 1978-12-14 Seitz Werke Gmbh Verfahren und vorrichtung zum erhoehen der standzeit von lauge in reinigungsmaschinen, insbesondere flaschenreinigungsmaschinen
DE3406383C2 (de) * 1984-02-22 1986-08-21 Hoesch Ag, 4600 Dortmund Einrichtung zur Behandlung von Schlämmen aus Entstaubungsanlagen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391152A1 (fr) * 1977-05-21 1978-12-15 Seitz Werke Gmbh Procede et appareil pour augmenter la duree d'usage d'une lessive dans des machines a nettoyer, en particulier dans des machines a nettoyer les bouteilles
DE2738134B1 (de) * 1977-08-24 1979-02-08 Vaw Ver Aluminium Werke Ag Verfahren zur Reinigung von verduennten Natronlaugen
FR2409787A1 (fr) * 1977-11-29 1979-06-22 Sick Kg Otto Procede et dispositif pour la separation de matieres polluantes dissoutes dans des lessives de lavage
DE2920737A1 (de) * 1979-05-22 1980-12-04 Sick Peter Verfahren und vorrichtung zum reinigen und wiedergewinnen von aus flaschenreinigungsmaschinen abgelassenen arbeitsfluessigkeiten
FR2522317A1 (fr) * 1982-03-01 1983-09-02 Seitz Enzinger Noll Masch Procede pour diminuer la quantite de substances nocives penetrant dans les eaux usees de machines de nettoyage de recipients, et machine de nettoyage de recipients pour la mise en oeuvre de ce procede

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1468753A1 (fr) * 2003-04-17 2004-10-20 Chemische Fabrik Dr. Weigert GmbH & Co. KG. Procédé pour nettoyer des bouteilles dans une machine de lavage de bouteilles
EP2489438A3 (fr) * 2011-02-17 2014-08-06 Krones AG Décharge magnétique depuis des machines de nettoyage de bouteilles

Also Published As

Publication number Publication date
EP0264596B1 (fr) 1989-10-11
DE3633652A1 (de) 1988-04-14
DE3633652C2 (fr) 1988-12-08
ATE47126T1 (de) 1989-10-15
DE3760737D1 (en) 1989-11-16

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