Ultrasonic filter regenerating apparatus and method
Ultrasonic transducer system
Underdrain block for filter media system
Underdrain for granular medium filter
Underdrain unit with air/water backwash for granular filtration
Undersea sand filter for cleaning injection water
Uniform distribution of a liquid over a filter surface
Unrollable media filtration with subsequent folding and...
Upflow filter and method of washing same
Upright tubular filter unit and method of separation using the f
Use of a ceramic metal oxide filter whose selection depends upon
Use of a porous, particulate material in a packed filter bed for
Use of aqueous binders in producing filter materials
Use of cationic charge modified filter media
Use of particulate polymers as filter aids for aqueous liquids
Used mineral motor oil ecological recycling procedure