Underdrain unit with air/water backwash for granular filtration

Underground effluent disposal-delivery system

Underground stormwater management system and method

Undersea sand filter for cleaning injection water

Unified fermentation and thickening process

Uniform area shower for disc filter

Uniform distribution of a liquid over a filter surface

Unique and effective separation technique for oil contaminated s

Universal end connector for floating boom

Universal liquid reduction and treatment system and method

Universal method and apparatus for conversion of volatile...

Universal water purification system

Unrollable media filtration with subsequent folding and...

Unsaturated polyesters and crosslinked membranes therefrom for a

Upflow filter and method of washing same

Upflow gas eductor induced air floatation separator

Upgrading heavy oil by ultrafiltration using ceramic membrane

Upright tubular filter unit and method of separation using the f

Urea adsorbent

Urea hydrolysis