DD270329A1 - METHOD FOR THE REGENERATION OF USED WASHBOARDS BASED ON PHOSPHATESIC WASHING AGENT - Google Patents
METHOD FOR THE REGENERATION OF USED WASHBOARDS BASED ON PHOSPHATESIC WASHING AGENT Download PDFInfo
- Publication number
- DD270329A1 DD270329A1 DD88313977A DD31397788A DD270329A1 DD 270329 A1 DD270329 A1 DD 270329A1 DD 88313977 A DD88313977 A DD 88313977A DD 31397788 A DD31397788 A DD 31397788A DD 270329 A1 DD270329 A1 DD 270329A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- reuse
- wash
- liquor
- regeneration
- washing
- Prior art date
Links
- 238000005406 washing Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008929 regeneration Effects 0.000 title claims abstract description 5
- 238000011069 regeneration method Methods 0.000 title claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 239000003599 detergent Substances 0.000 claims abstract description 9
- 229920000388 Polyphosphate Polymers 0.000 claims abstract description 8
- 239000001205 polyphosphate Substances 0.000 claims abstract description 8
- 235000011176 polyphosphates Nutrition 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000010452 phosphate Substances 0.000 claims abstract description 4
- 229940072033 potash Drugs 0.000 claims abstract description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 4
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract 2
- 239000011575 calcium Substances 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 150000004679 hydroxides Chemical class 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 150000001805 chlorine compounds Chemical class 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000011574 phosphorus Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- -1 phosphorus ions Chemical class 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/10—Filtering arrangements
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/006—Recovery arrangements, e.g. for the recovery of energy or water
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/20—Arrangements for water recovery
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detergent Compositions (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Regeneration verwendeter Waschflotten auf der Basis phosphathaltiger Waschmittel fuer die Flottenwiederverwendung in Waschprozessen, das insbesondere in gewerblichen Waeschereien Anwendung finden kann. Erfindungsgemaess wird nach Beendigung eines Waschzyklus eine partielle Ausfaellung der Polyphosphate und Tenside durch Erdalkaliionen enthaltende Verbindungen aus der Waschflotte vorgenommen, wonach eine Sedimentation des schmutzbeladenen Faellproduktes und anschliessende Abtrennung des Dekantats zur Flottenwiederverwendung erfolgen. Dadurch wird die Waschflotte regeneriert, Schmutz und Flusen werden ohne weitere Verfahrensstufen mit der Ausfaellung abgetrennt. Als Faellmittel ist vorteilhaft MgCl2-Ablauge der Kaliindustrie einsetzbar.The invention relates to a process for the regeneration of used wash liquors based on phosphate-containing detergents for the fleet reuse in washing processes, which can be found in particular in commercial laundry applications. According to the invention, after completion of a washing cycle, partial precipitation of the polyphosphates and surfactants is carried out by alkaline earth metal-containing compounds from the wash liquor, followed by sedimentation of the soiled product and subsequent separation of the decantate for liquor reuse. As a result, the wash liquor is regenerated, dirt and lint are separated without further process steps with the Ausfaellung. It is advantageous to use MgCl 2 waste liquor of the potash industry as a precipitant.
Description
Die Erfindung betrifft ein Verfahren zur Regeneration verwendeter Waschflotten auf der Basis phosphathaltiger Waschmittel, das insbesondere in gewerblichen Wäschereien Anwendung finden kann.The invention relates to a process for the regeneration of used wash liquors based on phosphate-containing detergent, which can be used in particular in commercial laundries application.
Gängige Waschverfahren in Einzelwaschmaschinen nutzen Wasch- und Spülflotten im allgemeinen nur einmal, danach erfolgt eine Ableitung in die Kanalisation, wodurch neben erheblichen Wassermengen auch Wärmeenergie und unverbrauchte Waschmittel verloren gehen.Common washing processes in single washing machines generally use washing and rinsing liquors only once, after which they are discharged into the sewage system, which in addition to considerable quantities of water, heat energy and unused detergents are lost.
Für Spülflotten ist es beispielsweise aus den DE-AS1155416, DE-OS 2910140 und DE-GM 6606208 bekannt, sie nach Sammlung in Behältern und/oder durch Kopplung mehrerer Einzelweschmaschinen, in denen der Waschprozeß unterschiedlich weit fortgeschritten ist, mehrfach zu nutzen.For rinsing liquors, it is known, for example, from DE-AS1155416, DE-OS 2910140 and DE-GM 6606208, to use them several times after collection in containers and / or by coupling a plurality of individual washing machines in which the washing process has progressed to a different degree.
Aus den DE-OS 2700440, DE-PS1125874, DE-OS 2632543 ist es auch bekannt, die Klarwaschflotte getrennt oder aber in Mischung mit den Spülflotten wiederzuverwenden. Diese genannten Flottenwiederverwendungen führen abertrotz Reduzierung des Waschmitteleinsatzes in den folgenden Waschzyklen zu einer nicht kontrollierbaren Konzentrationszunahme der Wasserinhaltsstoffe, so daß auch bei Entfernung von Flusen und festen dispergieren Schmutzteilchen, die prinzipiell durch Druckfiltration möglich ist, die Zahl der Wiederverwendungszyklen begrenzt ist.It is also known from DE-OS 2700440, DE-PS1125874, DE-OS 2632543 to reuse the clear wash liquor separately or in a mixture with the rinsing liquors. These Fleottenwiederverwendungen lead abertrotz reducing the use of detergent in the following washing cycles to an uncontrollable increase in concentration of water constituents, so that even with removal of lint and solid disperse debris, which is possible in principle by pressure filtration, the number of reuse cycles is limited.
Aus der DD-PS 223637 bzw. DE-OS 3513939 ist es bekannt, zur Mehrfachnutzung von Waschflotten eine Ultrafiltration vorzunehmen. Dadurch ist eine teilweise Wiederverwendung der Wäschereiabwässer sowie der unverbrauchten waschaktiven Substanzen möglich. Die Nachteile dieses Verfahrens sind in dem erheblichen technologischen Aufwand der Ultrafiltration zu sehen. Ein weiterer Nachteil besteht darin, daß auf Grund der Celluloseacetat-Membranen eine pH-Wertabsenkung auf etwa 7 erfolgen muß, wodurch nach der Filtration wieder eine Anhebung des pH-Wertes vorgenommen werden muß.From DD-PS 223637 or DE-OS 3513939 it is known to make an ultrafiltration for multiple use of wash liquors. As a result, a partial reuse of the laundry wastewater and the unused washing-active substances is possible. The disadvantages of this method can be seen in the considerable technological expense of ultrafiltration. Another disadvantage is that due to the cellulose acetate membranes, a pH reduction must be made to about 7, whereby after the filtration again an increase in the pH must be made.
Ziel ϋη ErfindungGoal ϋη invention
Ziel der Erfindung ist eine Reduzierung des Wasser-, Waschmittel- und Energieverbrauchs.The aim of the invention is a reduction of water, detergent and energy consumption.
Darlegung des Wesens der ErfindungExplanation of the essence of the invention
Aufgabe der Erfindung ist es, ein Verfahren zur Regenerierung verwendeter Waschflotten aui der Basis phosphalthaltiger Waschmittel für die Flottenwiederverwendung in Waschprozessen zuschaffen, das ohne Filtration eine gleichzeitige Abtrennung von Schmutz und Flusen ermöglicht.The object of the invention is to provide a process for the regeneration of used wash liquors aui the basis of phosphate-containing detergent for fleet reuse in washing processes, which allows simultaneous filtration of dirt and lint without filtration.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß nach Beendigung eines Waschzyklus eine partielle Ausfällung der Polyphosphate und Tenside durch Erdalkaliioneri enthaltende Verbindungen technischer Reinheit aus der Waschflotte, anschließende Sedimentation des schmutzbeladenen Fällprodukts und danach eine Abtrennung des Dekantats zur Flottenwiederverwendung erfolgt.According to the invention the object is achieved in that after completion of a wash cycle, a partial precipitation of the polyphosphates and surfactants by Erdalkaliioneri containing compounds of technical purity from the wash liquor, then sedimentation of dirt laden precipitate and then a separation of the decantate for fleet reuse.
Vorteilhafterweise wird die partielle Ausfällung durch Oxide, Hydroxide, Sulfate und/oder Chloride des Kalziums und/oder Magnesiums in fester oder gelöster Form vorgenommen.Advantageously, the partial precipitation is carried out by oxides, hydroxides, sulfates and / or chlorides of calcium and / or magnesium in solid or dissolved form.
Als Magnesiumverbindung technischer Reinheit ist Magnesiumchloridablauge der Kaliindustrie mit Verunreinigungen an NaCI und KCI zweckmäßig einsetzbar.As a magnesium compound of industrial purity, magnesium chloride waste liquor of the potash industry with impurities of NaCl and KCl can be suitably used.
Das molare Aufwandsverhältnis von Phosphorionen zu Erdalkaliionen beträgt vorteilhafterweise P:Me++ = 1:0,4 bis 1:1,2.The molar expenditure ratio of phosphorus ions to alkaline earth ions is advantageously P: Me ++ = 1: 0.4 to 1: 1.2.
mit der anfallenden Temperatur oder nach Abkühlung regeneriert werden. Eine pH-Wertveränderung vor der Fällung ist nichterforderlich.be regenerated with the resulting temperature or after cooling. A pH change before the precipitation is not required.
komplexieren und im Synergismus mit den Tensiden die Oberflächenspannung des Wassers erniedrigen und so den Schmutzaus der Wäsche entfernen und dispergieren, nach der Fällung erhalten bleibt.complexing and, in synergism with the surfactants, lower the surface tension of the water and thus remove and disperse the soil from the laundry after precipitation.
abgetrennten Dekantat die Polyphosphate und Tenside ergänzt, und dieses als Waschflotte mit üblicherSeparated decantate supplements the polyphosphates and surfactants, and this as a wash liquor with conventional
oder mittels bekannter Einrichtungen entwässert, wobei das anfallende Filtrat zur Bereitung der Fällmittellösung verwendetwerden kann. Die Vorteile der Erfindung liegen im einfachen technologischen Ablauf, der beliebig oft möglichenor dewatered by means known in the art, wherein the resulting filtrate can be used to prepare the precipitant solution. The advantages of the invention lie in the simple technological process, as often as possible
1 m3 gesammelte Waschflotte aus Trommelwaschmaschinen mit einem Gehalt von 260mg P/l und 380 mg Tensid/I und einempH-Wert von 9,8 wurden mit Erdalkalisalzen partiell gefällt. Als Fällmittel, das unter Rühren eingetragen wurde, kamen 8Ol1 m 3 of washing liquor collected from drum washing machines containing 260 mg of P / l and 380 mg of surfactant / I and having a pH of 9.8 were partially precipitated with alkaline earth salts. The precipitant, which was added with stirring, came 8Ol
molare Verhältnis Phosphor zu Fällmittelkationen liegt damit bei 1:0,5.molar ratio of phosphorus to precipitant cations is thus 1: 0.5.
klare wiederverwendbare Flotte mit folgenden nutzbaren Inhaltsstoffanteilen: Phosphor 206mg/l; Tenside 338mg/l.clear reusable liquor with the following usable constituents: Phosphorus 206mg / l; Surfactants 338mg / l.
Claims (4)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD88313977A DD270329A1 (en) | 1988-03-24 | 1988-03-24 | METHOD FOR THE REGENERATION OF USED WASHBOARDS BASED ON PHOSPHATESIC WASHING AGENT |
| DE3910089A DE3910089A1 (en) | 1988-03-24 | 1989-03-28 | Process for regenerating used wash liquors based on phosphate-containing detergents |
| SE8901075A SE8901075L (en) | 1988-03-24 | 1989-03-28 | PROCEDURE FOR THE REGENERATION OF APPLIED WASHING LAUNDRY BASED ON PHOSPHATE CONTAINING DETERGENTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD88313977A DD270329A1 (en) | 1988-03-24 | 1988-03-24 | METHOD FOR THE REGENERATION OF USED WASHBOARDS BASED ON PHOSPHATESIC WASHING AGENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD270329A1 true DD270329A1 (en) | 1989-07-26 |
Family
ID=5597852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD88313977A DD270329A1 (en) | 1988-03-24 | 1988-03-24 | METHOD FOR THE REGENERATION OF USED WASHBOARDS BASED ON PHOSPHATESIC WASHING AGENT |
Country Status (3)
| Country | Link |
|---|---|
| DD (1) | DD270329A1 (en) |
| DE (1) | DE3910089A1 (en) |
| SE (1) | SE8901075L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19700155A1 (en) | 1997-01-07 | 1998-07-09 | Henkel Kgaa | Continuous washing process with waste water recirculation |
-
1988
- 1988-03-24 DD DD88313977A patent/DD270329A1/en unknown
-
1989
- 1989-03-28 DE DE3910089A patent/DE3910089A1/en not_active Withdrawn
- 1989-03-28 SE SE8901075A patent/SE8901075L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8901075D0 (en) | 1989-03-28 |
| DE3910089A1 (en) | 1989-10-05 |
| SE8901075L (en) | 1989-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2415498A1 (en) | BLEACHING AND RECOVERY PROCESS FOR FUEL PULP | |
| DE506338C (en) | ||
| DE1617058B2 (en) | DETERGENTS | |
| DE69702032T2 (en) | Device and method for producing a cleaning solution and for treating the cleaning solution used | |
| DE69523483T2 (en) | METHOD FOR REGENERATING ION EXCHANGE RESINS USED TO REMOVE SUGAR SOLUTIONS | |
| DD270329A1 (en) | METHOD FOR THE REGENERATION OF USED WASHBOARDS BASED ON PHOSPHATESIC WASHING AGENT | |
| DE3513939A1 (en) | Process for wash liquor management in laundry washing | |
| EP0056068A1 (en) | Method of treating waste waters | |
| DE966600C (en) | Process for the simultaneous recovery of copper and tartaric acid salts from waste liquids that accumulate in the production of cellulose products from copper oxide ammonia cellulose solutions | |
| DE3310716A1 (en) | Process for eliminating HCl and SO2 from flue gas | |
| DE2125874B2 (en) | Method for controlling the level of impurities in zinc sulphate solutions | |
| AT265005B (en) | Process for the manufacture of bleached cellulose pulp | |
| WO1998032908A1 (en) | Method for washing clothes | |
| DE2552899C3 (en) | Process for processing the solid and liquid waste generated in the process for producing soda according to the Solvay process for the production of soda-lime fertilizer | |
| DE2437173C3 (en) | Method for washing textile material | |
| AT289669B (en) | Process for the treatment of waste water | |
| DE1811813B2 (en) | CONTINUOUS PROCEDURE FOR PURIFYING A CRUDE PHOSPHORIC ACID DIGESTION | |
| DE405579C (en) | Process for the production of potash nitrate from crude potash salts | |
| DE1617058C3 (en) | Washing aid | |
| DE46376C (en) | Utilization of the lime sludge in the sulphate process for pulp production | |
| DE848940C (en) | Process for the production of a foaming agent | |
| DE388168C (en) | Process for the production of pure clay | |
| DE1102329B (en) | Washing-up liquid to prevent incrustations in textiles after washing | |
| DE1594817C3 (en) | Process for washing out water-soluble substances from woven, knitted, non-woven fabrics, yarns or threads made from natural and synthetic fibers or their textile mixtures | |
| DE688922C (en) | Process for disinfecting, bleaching and cleaning using hypochlorites in conjunction with acids, in particular for treating filter media, preferably brewery filter media |