(19)
(11) EP 0 309 432 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.03.1991 Bulletin 1991/11

(43) Date of publication A2:
29.03.1989 Bulletin 1989/13

(21) Application number: 88850310.9

(22) Date of filing: 19.09.1988
(51) International Patent Classification (IPC)4: C23G 1/36, C23G 5/00, C11D 3/38, B08B 3/00, B08B 3/02
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 21.09.1987 SE 8703644
22.04.1988 SE 8801511

(71) Applicant: Hakansson, Lars Ake Hilmer
S-603 65 Norrköping (SE)

(72) Inventor:
  • Hakansson, Lars Ake Hilmer
    S-603 65 Norrköping (SE)

(74) Representative: Fagerlin, Heléne et al
H. Albihns Patentbyra AB, Box 3137
S-103 62 Stockholm
S-103 62 Stockholm (SE)


(56) References cited: : 
   
       


    (54) A cleaning method and apparatus therefor


    (57) The present invention relates to a method for cleaning objects, characterized by degreasing the objects with an aqueous tenside solution, such as to emulsify the hydrocarbons present, and by stimulating the growth of microorganisms for biodegradation of the hydrocarbons, by adding nutrient substances to the system. The invention also claims an apparatus for performing the method.






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