BIOELECTRICAL METHOD FOR CLEANING SOIL FROM ORGANIC IMPURITIES AND DEVICE FOR CARRYING OUT SAID METHOD

WIPO Patent Application WO/2002/062498

A1

The invention relates to bioelectrical means for eliminating petrol and petroleum products pollution and can be used for cleaning disturbed and undisturbed soils. The inventive method for bioelectrical cleaning of soil from organic petroleum and petroleum products pollution consists in introducing a solution of crudeoil oxidising microorganisms in a cleaning area, arranging electrodes (anode and cathode) in the cleaning area, passing direct current therebetween, collecting the solution accumulated near cathode and reintroducing it in the cleaning area. In order to ensure a temperature and pH values which are optimal for the life activity of microorganisms and reduce the energy consumption, the direct current is intermittently switched on and off and the soil temperature is maintained within a range between +10 °C and 40 °C. The soil can be pre-heated to a temperature ranging from +10 °C to 20 °C. Air can be intermittently supplied to the cleaning area and petrol and petrol products vapours can be intermittently pumped out from the cleaning area.

LIPATOV VALERY VASILIEVICH (RU)
IVLIEV EVGENY ANDREEVICH (RU)
VEXTEN BIERN (FI)
IMMONEN YANE (FI)
KRANK ANDERS (FI)

PCT/RU2002/000017

August 15, 2002

January 11, 2002

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LIPATOV VALERY VASILIEVICH (RU)
IVLIEV EVGENY ANDREEVICH (RU)
VEXTEN BIERN (FI)
IMMONEN YANE (FI)
KRANK ANDERS (FI)

B09C1/10; (IPC1-7): B09C1/10

WO1998002259A1

1998-01-22

RU2122904C1	1998-12-10
RU2100485C1	1997-12-27
RU2125122C1	1999-01-20
DE4337192A1	1995-05-04

Sandigursky, Oleg Lvovich (St.Petersburg, RU)

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