公开(公告)号：EP0990020A1

公开(公告)日：2000-04-05

申请号：EP98937476.4

申请日：1998-06-12

申请人： HENKEL-ECOLAB GmbH & CO. OHG

发明人： MERZ, Thomas ,  SCHNEPF, Christine ,  SHAMAYELI, Khalil

IPC分类号： C11D1/83 ,  C11D3/02 ,  C11D3/08 ,  C11D3/12 ,  C11D11/00

CPC分类号： C11D1/83 ,  C11D1/06 ,  C11D1/12 ,  C11D1/123 ,  C11D1/126 ,  C11D1/14 ,  C11D1/29 ,  C11D1/72 ,  C11D1/722 ,  C11D3/08 ,  C11D3/364 ,  C11D11/0017 ,  C11D11/0076

摘要： The invention relates to a method for washing clothes, in particular working clothes. The clothes are washed in a washing machine of the type commonly used in industrial laundries, using a combination of products comprising at least two components: (A) a washing alkali component containing (A1) an anionic surfactant and a water-soluble silicate, and/or (A2) an alkali hydroxide and (A3) complex-forming agents; and (B) a surfactant component preferably containing a nonionic surfactant. After washing, the wastewater is treated in a membrane filtering system. Unlike known agents, the inventive product combination comprising components A and B does not negatively affect wastewater treatment in the membrane filtration system. In particular, it does not block the membranes.

公开(公告)号：EP0873388A1

公开(公告)日：1998-10-28

申请号：EP96943993.0

申请日：1996-12-18

申请人： HENKEL-ECOLAB GmbH & CO. OHG

发明人： SCHNEPF, Christine ,  MERZ, Thomas ,  KRACK, Ralf

IPC分类号： B01D61 ,  C02F1 ,  C08L71 ,  C11D1 ,  C11D11

CPC分类号： B01D61/147 ,  C02F1/444 ,  C08L71/02 ,  C11D1/72 ,  C11D1/722 ,  C11D1/8255 ,  C11D11/0017 ,  C08L63/00

摘要： The invention relates to a process for the washing of laundry, in particular, working clothes, in which the laundry is washed in a conventional washing machine for commercial washes with a liquid to pasty surfactant combination which contains (a) 20 to 80 % by weight of alcohol ethoxylates derived from primary C12-C22 alcohols which are linear or methyl-branched in position 2, which alcohols all have an average of 5 or more ethylene oxide groups (EO), and (b) 80 to 20 % by weight of alcohol alkoxylates derived from primary C12-C22 alcohols which are linear or methyl-branched in position 2, which alcohols all have an average of 4 to 8 ethylene oxide groups and 3 to 8 propylene oxide groups (PO). The waste water is treated by way of a diaphragm system and, when treated, can be reused in the washing process.

公开(公告)号：EP0956387A1

公开(公告)日：1999-11-17

申请号：EP98905316.0

申请日：1998-01-20

申请人： HENKEL-ECOLAB GmbH & CO. OHG

发明人： KRACK, Ralf ,  LAUFENBERG, Alfred ,  BROCKHAUS, Jörg ,  SCHNEPF, Christine ,  MERZ, Thomas ,  ROSSNER, Dietmar

IPC分类号： D06F39

CPC分类号： D06F39/006

摘要： The invention relates to a method for washing clothes, especially working clothes, in which the clothes are washed with a detergent and cleansing agent in an ordinary washing machine for commercial laundries and the waste water is processed by means of a membrane installation. The method is characterized in that the waste water is conducted via a nano-filtration membrane, and separated in a dirt-enriched concentrate and a dirt-depleted regenerated waste. The regenerated waste is fed back to the washing process. The water can be processed to a high degree of purity, so that it can be returned to the washing process without impeding the washing capacity of the installation.