| 摘要 |
In a plant for purifying water contaminated by droplets of hydrocarbonaceous liquid, which plant has an essentially vertically positioned filter ( 4 ); an inlet chamber ( 7 ) for said contaminated water partially defined by a first vertical surface ( 5 ) of said filter; supply means ( 8 ) for contaminated water debauching in the lower portion of said inlet chamber ( 7 ); and outlet means ( 9 ) connected to the upper portion of said inlet chamber ( 7 ) for discharging hydrocarbonaceous liquid separated from the water in said inlet chamber; the operational period between filter cleaning and/or the hourly capacity of the filter is increased by injecting fine gas bubbles into the contaminated water at at least one location selected from locations in the lower portion of said inlet chamber ( 7 ) and locations in said supply means ( 8 ) to produce a stream of gas bubbles upwards along said first vertical filter surface ( 5 ). |
