CPC Subgroup
C02F 11/15 by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131)
Full Title
Treatment of sludge; Devices therefor > by de-watering, drying or thickening > by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131)