WO1995002722A1 - Washing plant and method of water management in a washing plant - Google Patents
Washing plant and method of water management in a washing plant Download PDFInfo
- Publication number
- WO1995002722A1 WO1995002722A1 PCT/EP1994/002186 EP9402186W WO9502722A1 WO 1995002722 A1 WO1995002722 A1 WO 1995002722A1 EP 9402186 W EP9402186 W EP 9402186W WO 9502722 A1 WO9502722 A1 WO 9502722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- rinsing
- washing
- stage
- chamber
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
Definitions
- the invention relates to a method for guiding water in countercurrent washing lines with several chambers connected in series, in which washing aids are added, process water to minimize fresh water consumption as much as possible, of which rinsing water is at least partially reused in the washing stage and a system for the supply and discharge of water and for the addition of washing aids in a car wash to carry out such a process.
- the invention relates to a method and a system for installing water in such streets for washing textile laundry, in which an agent, e.g. B. peracetic acid is used, the .Aktivs oxygen for disinfecting and / or bleaching the laundry.
- washing lines have different functional zones, for example those for prewashing, including wetting / soaking, washing or rinsing, rinsing and aftertreatment, which are normally followed by the dewatering of the laundry.
- prewashing including wetting / soaking, washing or rinsing, rinsing and aftertreatment
- the laundry and the process water are conveyed in opposite directions, at least in the washing and rinsing zones.
- This procedure enables advantageous heat transfer between laundry and process water and, on the other hand, gives the possibility that media which have just been introduced into the system come into contact with laundry which has already been at least partially pretreated and can therefore have an advantageous effect according to their capacity.
- the process water can at least be withdrawn in whole or in part from the dewatering and the rinsing, washing and prewashing zone.
- sodium bisulfite NaHSO 3
- sodium bisulfite has an unpleasant smell, lowers the pH and leads to salting of the waste water.
- the invention is based on the problem of a method for guiding water in countercurrent washing lines and a system for carrying it out. To create leadership in which the laundry is disinfected and bleached, denaturation of protein avoided and the fresh water consumption is largely reduced by re-using process water.
- a method according to claim 1 and a system or installation according to claim 8 are created.
- the invention has the advantage that a negative impairment of the laundry by the content of washing aids during prewashing, for. B. the denaturation of protein-containing impurities in the laundry is avoided without the process water having to be added agents that eliminate the effect of the washing aids or the fresh water consumption is increased by dispensing with the reuse of process water.
- the items to be washed are dewatered, for example, by pressing or centrifuging.
- This water e.g. B. press water
- This water generally contains no germs and no or only slight impurities. It can be used again in the rinsing zone.
- a possible place for reuse, possibly together with fresh water, is the last chamber of the rinsing zone. (If, in connection with the invention, information is given about the sequence of zones and parts of the car wash or the process steps, these always relate to the conveying direction of the laundry). In this last rinsing chamber, the possibility of adding fresh water is normally provided, so that the reuse of press water can be carried out easily, even when retrofitting a car wash.
- Part of the peracetic acid-containing washing aid is advantageously introduced into the aftertreatment zone, since it can have a disinfecting effect here and is also made available for bleaching there with the press water when it is used again in the rinsing zone.
- the part to be entered into the aftertreatment zone is dimensioned such that the content of peracetic acid in the aftertreatment ensures disinfection, while the rinse zone is metered in only to the extent that the content of peracetic acid achieves the desired bleaching effect.
- the installation according to the invention for the supply and discharge of water and for the addition of washing aids in countercurrent washing lines with a plurality of chambers connected in series provides for the laying of containers and pipelines, as well as closing and redirecting elements integrated therein, which enable the use or enable the reuse at the locations provided for carrying out the method according to the invention in a suitable and cost-effective manner.
- the method according to the invention and the corresponding installation can be provided in the various embodiments of washing lines, such as short or long or single or double drum systems, without affecting the other method parameters. It is also advantageous that the corresponding installation can also be taken into account and installed in existing systems.
- the method according to the invention can also be used in cases in which the incompatibility of successive types of laundry necessitates a bath change procedure.
- FIG. 1 shows the water flow diagram according to the prior art.
- Fig. 2 shows the water flow chart when the press water is used again in a central chamber of the rinsing zone and
- Fig. 3 shows the water flow chart when the press water is used again in the last chamber of the rinsing zone.
- chambers 1 and 2 are the pre-wash zone VW, 3 to 7 the final wash or washing zone KW, 8 to 11 assigned to the rinsing zone SP and 12 to the post-treatment zone NB.
- the press water PW is collected in tank T3 and the rinsing water SW in tank T2.
- the laundry is added via a hopper into the first prewash chamber 1 and after the end of the respective treatment from chamber to chamber until finally the aftertreatment NB such as, for. B. starches, fabric softening, neutralizing and / or disinfecting and conveyed from there into the drainage press EW.
- the aftertreatment NB such as, for. B. starches, fabric softening, neutralizing and / or disinfecting and conveyed from there into the drainage press EW.
- 10 to 12 liters of fresh water (FWa) are added per kilogram of dry laundry, which flows against the laundry to the first rinsing chamber 8, where the rinsing water SW not taken up in the laundry is drawn off and collected in tank T2.
- a small amount of fresh water FW can be added to chamber 12. From there, a partial amount, in the example approx.
- SWa 3 l / kg TW (SWa), is fed into the last washing chamber 7, which flows against the laundry to the first washing chamber 3, where it is drawn off and disposed of in the channel K as waste water.
- the other subset SWb of the rinsing water SW from tank T2 is at least partially added together with the press water PW from tank T3 to tank T1 and from there with a total of about 5 to 6 l / kg TW for wetting / soaking and prewashing into chamber 1 and withdrawn from chamber 2 or chamber 3, where it flows with the laundry in the same direction or is carried along, and disposed of as waste water K.
- the washing aid in the example peracetic acid PES, is used in portions of 2 to 3 ml / kg TW (PESa) in the chambers 11 and / - or 12 and from 8 to 10 ml / kg TW (PESb) in a medium, e.g. B. added to the washing chamber 5.
- the SP zone in the rinsing and Nach harmonys ⁇ , NB added PES .Aner come across the freshlyeinge ⁇ sat presses' and rinsing water PW, SW in the prewash VW, where they can denature the protein content of contaminants the laundry, e.g. B. lead blood stains. Denatured protein can no longer be washed out or only with great difficulty.
- Process water containing peracetic acid does not get into the pre-washing stage VW, but fresh water FW is used there in an amount of approx. 5 to 6 1 / kg TW (FWb), which in an amount of 5 to 6 1 / kg TW (FWb ) is also supplied in chamber 11, the last rinsing chamber.
- a quantity of approx. 5 l / kg TW press water (PWa) is used in chamber 9 in the middle of the rinsing zone SP Approx.
- fresh water FW is used in an amount of 10 to 12 l / kg TW and PES in the rinsing and / or post-treatment stage with 2 to 3 ml / kg TW (PESa) and in the washing zone with 8 - 10 ml / kg TW (PESb) inserted, but without PES-containing water getting into the pre-washing stage VW.
- the addition of the re-used press water approximately in the middle of the rinsing zone SP has the advantage that the warmer recirculated press water PWa is used in a chamber where the items to be washed are still at a higher temperature and the press water PW can thus help to cool down the items to be washed.
- FIG. 3 shows a further embodiment, which differs from FIG. 2 essentially only in that the returned press water PWa, in the example together with 5 to 6 l / kg TW fresh water (FWb), is added in the last rinsing chamber 11 , but otherwise the same fresh water and PES consumption quantities (FWb, PESa, PESb) are available.
- This version is also suitable for single-drum systems and retrofitting to allow the addition of the press water PW in a simple manner.
- the cooling of the laundry is less promoted by the fact that the press water PW with a higher temperature than fresh water FW comes into contact with laundry that has already cooled further at this point
- the process variants according to the invention can be ascertained that, without changing the fresh water consumption compared to the prior art, they prevent washing aids which give off active oxygen with the re-used process water and reach the prewash stage and there lead to the denaturation of protein.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Detergent Compositions (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Treatment Of Fiber Materials (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Cleaning In General (AREA)
- Sink And Installation For Waste Water (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK94924230T DK0708854T3 (en) | 1993-07-13 | 1994-07-04 | Washing line and method of water flow |
EP94924230A EP0708854B1 (en) | 1993-07-13 | 1994-07-04 | Washing plant and method of water management in a washing plant |
DE59404588T DE59404588D1 (en) | 1993-07-13 | 1994-07-04 | WASHING ROAD AND WATER PIPING METHOD |
FI960154A FI108149B (en) | 1993-07-13 | 1996-01-12 | Washing line and water control method |
GR970403237T GR3025586T3 (en) | 1993-07-13 | 1997-12-03 | Washing plant and method of water management in a washing plant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4323427.5 | 1993-07-13 | ||
DE4323427A DE4323427C2 (en) | 1993-07-13 | 1993-07-13 | Car wash and water management process |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995002722A1 true WO1995002722A1 (en) | 1995-01-26 |
Family
ID=6492696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/002186 WO1995002722A1 (en) | 1993-07-13 | 1994-07-04 | Washing plant and method of water management in a washing plant |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0708854B1 (en) |
AT (1) | ATE160186T1 (en) |
DE (2) | DE4323427C2 (en) |
DK (1) | DK0708854T3 (en) |
ES (1) | ES2109009T3 (en) |
FI (1) | FI108149B (en) |
GR (1) | GR3025586T3 (en) |
WO (1) | WO1995002722A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19609994C1 (en) * | 1996-03-14 | 1997-09-18 | Henkel Ecolab Gmbh & Co Ohg | Process for operating counter-current car washes and counter-current washing systems |
DE19645664C2 (en) * | 1996-11-06 | 1998-09-03 | Henkel Ecolab Gmbh & Co Ohg | Process for operating counter-current car washes and counter-current washing system |
DE19856121C2 (en) * | 1998-12-04 | 2003-12-18 | Zinser Textilmaschinen Gmbh | Method and device for the production of compacted yarn |
DE19914201A1 (en) | 1999-03-29 | 2000-10-05 | Zinser Textilmaschinen Gmbh | Method and device for bundling a fiber composite warped in a drafting system of a spinning machine |
DE10031040B4 (en) * | 1999-08-11 | 2006-01-26 | Pharmagg Systemtechnik Gmbh | Method and device for wet treatment of laundry items |
DE10131537B4 (en) * | 2001-06-29 | 2005-09-29 | Senkingwerk Gmbh | Process for washing textiles and continuous washing machine for carrying out the process |
WO2016054517A1 (en) | 2014-10-03 | 2016-04-07 | Pellerin Milnor Corporation | Continuous batch tunnel washer and method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH438199A (en) * | 1963-01-05 | 1967-06-30 | Sulzmann Erich | Tubular double drum washing machine and method for its operation |
CH492816A (en) * | 1963-01-05 | 1970-06-30 | Sulzmann Erich | Tubular double drum washing machine working according to the countercurrent principle |
DE3935621A1 (en) * | 1989-10-26 | 1991-05-02 | Herbertz Heinz | METHOD AND DEVICE FOR WASHING AND DISINFECTING IN A CONTINUOUS WASHING MACHINE |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2226373A1 (en) * | 1972-05-31 | 1973-12-20 | Poensgen Gmbh Geb | PROCEDURE FOR CONTINUOUS WASHING OF LAUNDRY |
DD223179A1 (en) * | 1984-02-20 | 1985-06-05 | Textima Veb K | METHOD FOR OPERATING A WASHING SYSTEM |
EP0217981A1 (en) * | 1985-07-25 | 1987-04-15 | Richard O. Kaufmann | Continuous flow laundry system and method |
EP0284554B1 (en) * | 1987-03-27 | 1991-08-14 | Maschinenfabrik Ad. Schulthess & Co.AG. | Washing method and tunnel type washing machine |
-
1993
- 1993-07-13 DE DE4323427A patent/DE4323427C2/en not_active Expired - Fee Related
-
1994
- 1994-07-04 EP EP94924230A patent/EP0708854B1/en not_active Expired - Lifetime
- 1994-07-04 DK DK94924230T patent/DK0708854T3/en active
- 1994-07-04 DE DE59404588T patent/DE59404588D1/en not_active Expired - Fee Related
- 1994-07-04 ES ES94924230T patent/ES2109009T3/en not_active Expired - Lifetime
- 1994-07-04 WO PCT/EP1994/002186 patent/WO1995002722A1/en active IP Right Grant
- 1994-07-04 AT AT94924230T patent/ATE160186T1/en not_active IP Right Cessation
-
1996
- 1996-01-12 FI FI960154A patent/FI108149B/en active
-
1997
- 1997-12-03 GR GR970403237T patent/GR3025586T3/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH438199A (en) * | 1963-01-05 | 1967-06-30 | Sulzmann Erich | Tubular double drum washing machine and method for its operation |
CH492816A (en) * | 1963-01-05 | 1970-06-30 | Sulzmann Erich | Tubular double drum washing machine working according to the countercurrent principle |
DE3935621A1 (en) * | 1989-10-26 | 1991-05-02 | Herbertz Heinz | METHOD AND DEVICE FOR WASHING AND DISINFECTING IN A CONTINUOUS WASHING MACHINE |
Also Published As
Publication number | Publication date |
---|---|
FI108149B (en) | 2001-11-30 |
EP0708854B1 (en) | 1997-11-12 |
ES2109009T3 (en) | 1998-01-01 |
FI960154A0 (en) | 1996-01-12 |
ATE160186T1 (en) | 1997-11-15 |
DE59404588D1 (en) | 1997-12-18 |
DE4323427C2 (en) | 1996-08-29 |
FI960154A (en) | 1996-03-13 |
EP0708854A1 (en) | 1996-05-01 |
GR3025586T3 (en) | 1998-03-31 |
DK0708854T3 (en) | 1998-07-27 |
DE4323427A1 (en) | 1995-01-19 |
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