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.