WEMCO ISF SYSTEMSProven efficient hydraulic flotation systems
A high-efficiency, hydraulic flotation machine for removing oil and suspended solids from produced and waste waters.
PerformanceHigh-Efficiency Oil Removal - The separation efficiency of the unique ISF flotation cell design compares favorably to the industry standard depurator. At many installations, the ISF achieves effluent oil concentration in the range of 5 to 10 parts per million. Our ISF cells are designed to provide 90% or greater oil removal and 80% or greater removal of non-oil solids at full design capacity. This represents a major improvement over earlier hydraulic flotation systems which typically experienced performance degradation at only 40% of design capacity.
Product Range
• Individual units for flow rates of 380 m3/day to
20,670 m3/day (2400 BPD to 130,000 BPD)
• Separation efficiency up to 95%
OverviewThe WEMCO® ISF® (Induced Static Flotation) System is a leading technology for environmentally safe treatment of secondary produced waters. The ISF system is a simple, hydraulically operated gas flotation machine that delivers efficient oil/water separation with complete process containment. Effective oil recovery and water treatment are achieved simply and economically, with operator and environmental safety ensured by the completely enclosed flotation process. Units are available in either
the horizontal standard four cell or vertical UNICEL® design which is well-suited for locations where space restrictions require a small footprint.
Operating Principle and Key FeaturesStreamlined for simple, efficient operation and maintenance, each ISF machine consists of a cylindrical vessel partitioned into several major components: floating, degassing, optional skim storage compartments, a recirculation pump and piping and a liquid level control system. All equipment is skid mounted for rapid installation and start-up.
The ISF is an induced gas flotation system through which a high-velocity stream of recycled clarified water enters the cells containing influent water through eductor nozzles in the bottom of the vessel. This induces a recirculating flow of air or gas from the vessel freeboard into the process water, and a unique eductor arrangement distributes small gas bubbles uniformly throughout the cell volume. These bubbles lift contaminants to the liquid surface forming a froth layer, which is then skimmed from the liquid surface by a simple collection trough. Gas and a small volume of treated water are continuously recycled from the degassing chamber into the treatment cells. The skim cycles are automatically initiated by a timer and the cycle interval, duration and level setpoints are all user-selectable and can be changed without interrupting operation or entering the vessel. The power requirements of the ISF are very low with the gas induction and mixing in the flotation cells being provided by a simple recirculating pump.
W A T E R
LOCATIONS Other Locations
United States of America11210 Equity Drive Houston, TX 77041 USATel 1 713 849 7500
Abu Dhabi9th Fl Al Jazira Ofc Twr A Muroor RoadPO Box 47280Abu Dhabi, UAETel 971 2 596 8400
BrazilRua da Assembléia, 9820th Floor20011 000 Rio de Janeiro RJ BrazilTel 55 21 2172 9650
Canada9423 Shepard Road SECalgary, AB T2C 4R6CanadaTel 1 403 236 1850
MalaysiaSuite 07-08, Menara See Hoy Chan 374 Jalan Tun Rozak50400 Kuala Lumpur MalaysiaTel 60 3 9207 9555
United Kingdom5 The Heights, BrooklandsWeybridgeSurrey, KT13 0NY United KingdomTel 44 1932 452000
Colombia
France
India
Japan
Mexico
Norway
Russia
www.c-a-m.com
© 2015 Cameron | ISF is a registered trademark of Cameron. UNICEL is a trademark of Cameron. WEMCO is a registered trademark of FLSmidth under license to Cameron. | 7/15 AD01835P
Benefits and Advantages
• Compact, lightweight, horizontal or vertical installation
• Minimal footprint
• No internal moving parts, low maintenance
• Minimal power requirements, minimal controls
• Modular design, easy to expand, reduced
installation costs
• Motion insensitive vertical UNICEL™ design is ideal for
floating production systems
• Utilizes process or inherent feed pressure
• No environmental pollution
• All hazardous or toxic gases are contained
• Can be constructed to ASME code for pressurized
operation
Options and Types
• Vertical UNICEL
• Four cell
ApplicationsThe WEMCO ISF can be used wherever secondary treatment of oil-contaminated water or waste water is required.
• Oilfield produced waters
• Refinery waste waters
• Petrochemical waste waters
Skim Outlet
(Valve Optional)
Optional Skim Cell
(allows skimming to be stored or further dewatered with the ISF vessel)
Control Panel
Purge Gas Out
Liquid Level Controller
Process Outlet with Water Level Control Valve
Eductor Supply Pump
Pressure Switch for Pump Protection
Primary Skim Out
Eductor Water Supply Header
Eductor Nozzle Assembly
Eductor Gas Supply Header
Eductor Gas Return
Primary Skim Through
Purge Gas In
Access Hatch
Process Inlet
Protection Hatch
Typical vertical UNICEL unit