Flotation

WREX Dissolved Air Flotation & Microbubble Flotation Equipment

The Wrex flotation thickening and clarification systems are fitted with the following features:

• High efficiency countercurrent flotation flow patterns.
• Separate phase material subject to high intensity 'air lift' at all stages of flotation.
• Automatic float dewatering systems; e.g. to increase typical oily floats from 2-4 to 5-8 % solids.
• Solids s.g. separation differential between sludge and float typically 0.2.
• Separate automated, hydraulically driven, sludge and float removal systems.
• Optional multiple coagulant and flocculant injection points.
• Optional gas lift systems with provision for gas, float, sludge and clarified liquor all removed at separate positions.
• Most designs use no moving parts in separation zones or chamber.

• Compact high rate separate phase separation plants.
• Capacities from 1 - 1000 m3/hr.
• High intensity gas lift systems for heavy solids removal; e.g. for the mining industries.
• Plants accept a wide range of feed flows without any deterioration in performance.
• Filtration or other post flotation treatment of clarification systems often not required.
• Intrinsically safe plants using only pneumatic principles for use in the oil and gas industries.
• Proprietary air/gas injection systems, to control bubble size & eliminate troublesome large bubble release.

Applications include:

• Coal wash waters.
• Oil stripping from refinery oily liquor.
• Oil stripping from compressor oily water in the oil/gas industry.
• Copper carbonate flotation.
• Pulp & paper industries - black liquor effluent treatment.
• Pulp and paper industries - white liquor clarification.
• Stripping of metallic inks from printing effluents.
• Oil and grease flotation systems in the food and beverage industries.
• Tertiary effluent clarification.
• Stripping of fine metals and ores from liquor.