Coalescing Oil Water Separator
Industrial Fiberglass Oily Water Separator
These small (up to 50 gpm) fiberglass industrial oil water separators (OWS) have the unique capability to be modified to fit the application, in that it has a built in oil reservoir which typically has a horizontal plate that separates it from the effluent chamber. These two chambers can be divided horizontally or vertically, or combined to fit your system needs. This unit will typically deliver an effluent quality of 10ppm or less of unemulsified oil particles over 30 micron. We can do it because they are molded fiberglass.
These are great little oil water separators with a flow range all the way up to 50 gpm gravity flow. If you are going to be pumping—we need to talk about it and the limits. Call us (314) 579-9755.
NO MOVING PARTS—it’s hard to screw this one up
The ROSF Series Fiberglass Coalescing Oil Water Separatorsare designed for above grade applications where a high performance coalescing oil water separator is desired using coalescing media. The lightweight, compact ROSF oil water separator design has many features and options to provide engineers, system integrator and end users with convenience and flexibility in system integration choices for groundwater remediation, wash rack, storm water runoff and other projects.
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Products removed: motor oils, fuels (vehicle/jet), fuel oils, hydraulic fluids, immiscible machining oils, lube oil, transmission fluid, bunker c, DNAPL, LNAPL, vegetable based oils, crude, air compressor lube & other petroleum based derivatives (BTEX etc.). Model sizing is based on the oil/fuel specific gravity, droplet size removal desired and other parameters of the waste stream.
ROSF Fiberglass Series Separator Brochure
R/OS/X Steel Series Separator Brochure
SSC/OWS/EX Stainless Steel Series Separator Brochure
Sheen Coalescing Pack (SCP)
PERFORMANCE: OWS
Oil/fuel removal 10 mg/L or less of oil droplets 30 micron and larger of non-emulsified, free and dispersed oils
Solids (TSS) 40 -100 mg/L
Solids (TSS) 40 -100 mg/L
Influent concentration basis:
Oils 1250 mg/L or less influent loading
TSS 400 mg/L or less influent loading
SPECIFICATIONS
Specification Summary: ROSF oil water separator
System model: Coalescing Separator
Number of model sizes: 5
Process types: Oil separation, TSS settling
Volume range offered: 5 – 50 GPM
System model: Coalescing Separator
Number of model sizes: 5
Process types: Oil separation, TSS settling
Volume range offered: 5 – 50 GPM
Design Specification Summary
Performance: 10 mg/L or less 30 micron free, dispersed and non-emulsified oil droplet
Design criteria: Elements of API-421, 1990 & current coalescing media design theory
Influent chamber: Influent diffuser or overflow weir
Separation chamber: To contain Flopak media pack(s)
Solids hopper : Located under and after separation chamber and media packs
Clean water effluent chamber: Located after separation chamber
Water baffle: Water flows over this baffle to exit tank
Weir plate: Vertical fixed weir plate to maintain operating water level
Oil skimmer: Adjustable rotary weir located in the separation chamber
Oil reservoir: Located in separation chamber for temporary storage of skimmed oils
Media pack: Flopak separation packs
Cover: Single piece vapor retaining, gasketed with polyethylene gasket and attached via zinc plate fasteners
Fittings: NPT couplings up to 3″, 4″ & larger: 150# ANSI B16.5 FF flange
Base: Self-supporting FRP base
Lifting lugs: No lifting lugs provided
Design criteria: Elements of API-421, 1990 & current coalescing media design theory
Influent chamber: Influent diffuser or overflow weir
Separation chamber: To contain Flopak media pack(s)
Solids hopper : Located under and after separation chamber and media packs
Clean water effluent chamber: Located after separation chamber
Water baffle: Water flows over this baffle to exit tank
Weir plate: Vertical fixed weir plate to maintain operating water level
Oil skimmer: Adjustable rotary weir located in the separation chamber
Oil reservoir: Located in separation chamber for temporary storage of skimmed oils
Media pack: Flopak separation packs
Cover: Single piece vapor retaining, gasketed with polyethylene gasket and attached via zinc plate fasteners
Fittings: NPT couplings up to 3″, 4″ & larger: 150# ANSI B16.5 FF flange
Base: Self-supporting FRP base
Lifting lugs: No lifting lugs provided
Materials of Construction
Tanks: FRP
Piping: PVC
Testing: Hydrostatic testing
Surface preparation(FRP): Interior surfaces prepared prior to molding.
Piping: PVC
Testing: Hydrostatic testing
Surface preparation(FRP): Interior surfaces prepared prior to molding.
Coatings (FRP): Exterior coating shall be white gel coat, 25 mil DFT. Interior coating shall be coated with a clear veil.
Standards used : Elements of AWS D1.1/1.1M, API, API-650, API-421, ANSI, IEC,AWS D1.6, UL, UL-508,UL-845,SSPC,ASME, CSA, NEMA, NFPA79, NEC
OIL WATER SEPARATOR THEORY
Coalescing Oil Water Separators: Coalescing Oil Water Separators are passive, physical separation systems designed for removal of oils, fuels,hydraulic fluids, LNAPL and DNAPL products from water. Designed performance can be described by a combination of Stokes Law and current coalescing plate theory, wherein, the oil droplet rise rate and other parameters dictate the surface area required for gravity & coalescent separation.
Separation Process:The water/oil mixture enters the separator and is spread out horizontally, distributed through an energy and turbulence diffusing device. The mixture enters the Flopak media where laminar and sinusoidal flow is established and the oils impinge on the media surface. As oils accumulate they coalesce into larger droplets, rising upward through the pack corrugations until they reach the top of the pack, where they detach and rise to the water’s surface. At the same time solids encounter the media and slide down the corrugations, falling into the v-hopper under the Flopak media.
APPLICATIONS
Groundwater Remediation
Contaminated ground water treatment for removal of gasoline, diesel, JP, jet fuels,LNAPL, DNAPL, motor oils, kerosene, fuel oils and more.
Refineries
Removal of crudes, gasoline, diesel fuel, motor oils, transmission fluids,hydraulic fluids, jet fuels, aircraft fuels from refining processes.
Vehicle Wash Racks
Removal of gasoline, diesel fuel, motor oils, transmission fluids, hydraulic fluids, jet fuels, aircraft fuels and lubricants when washing jets, cars, trucks, heavy equipment, railroad locomotives and equipment.
Military Wash Racks
Field equipment, jet wash, tracked equipment wash uses for typical fuels and oils removal. Complete treatment systems are offered. (Also see VEW systems)
Industrial Process Water
Hydraulic fluids, machining coolant/cutting fluid tramp oil removal, compressor condensate, machined parts rinse water.
Steel Mills
Rolling mill hydraulic oil/water extraction, compressor condensate, stormwater runoff, drain water.
Stormwater Treatment
Parking lot runoff, railroad re-fueling depot runoff, gas station runoff, bridge runoff.
Shipping Ballast & bilge water treatment
Off-loading of water to shore based treatment system, bunker & diesel fuels removal.
Tank Farms
Fuel, oil storage tank farms for removal of water from tank bottoms. Stationary and mobile systems are offered.
Petro-Chemical
Refineries, chemical compounding companies, hydrocarbon based chemical bases such as cumene and other materials.
Power Generation
Generator lube oils, hydraulic oils, fuels. Stationary & mobile systems offered.
Heat Treating
Heat treating facility oily wash solution can be continuously treated.
OPTIONS
Slotted Pipe Scum Skimmer:
Rotating C-Pipe Oil Skimmers are used in many API separators , steel mills and refineries. The Rotating Pipe Skimmers have an open part of the pipe that is turned up/and or above the water level when skimming is not needed, then that C-shaped pipe is rotated down to water/oil level when skimming is desired.
Effluent Pumpout:
Centrifugal pump with level switches & Nema 4 control panel, base mounted, 115/230/460V power offered. OS Effluent chamber must be expanded to accommodate pumpout or provision of an external pumpout tank.
Sludge Pumpout System:
Air operated, diaphragm pump with air controls & Nema 4 control panel, auto on/off timer, base mounted, 115V/1ph/60Hz power req’d. Progressive cavity pump system also available. 1 – 100 GPM.
Oil Pumpout System:
Air operated, diaphragm pump with air controls, level switches & Nema 4 control panel, base mounted, 115V/1ph/60Hz power req’d. Electric gear or progressive pump systems available. 1 – 100 GPM (larger if required)
Sludge Auger:
OS separator V-hopper(s) can be provided with a sludge auger. System consists of stainless steel shafts with coated steel screw auger(s) driven by a slow speed gear motor drive assembly. The auger extends the full length of the solids hopper(s) and conveys solids to the sludge outlet. A Nema 4 on/off control box is provided, power required: 230 or 460V/3ph/60Hz.
Freeze Protection:
Immersion heaters mounted through tank wall. Each heater has an independent thermocouple well, 0-100 deg. F thermostat and Nema 1 (or optional Nema 4) housing. 230/460V/3ph/60Hz power req’d.
Retpak Secondary Coalescer:
High surface area, reticulated, secondary coalescing media for polishing flow after standard Flopak media.
Oil Sight Glass:
Two automatic, brass valves with tempered sight glass and protection rods mounted in oil reservoir. If glass is broken check ball stops outflow from reservoir.
External Sight / Level Glass:
An externally mounted clear PVC sight tube is provided with multi-point level switch for indication or pump control of oil or water. Switch is removable for cleaning and inspection.
Elevation Stand:
Epoxy coated steel stand or legs to elevate tank to desired level. Standard deck height is 30″. Full platforms & walkways with ladders or stairways can be designed where required or desired.
High Temperature Design:
Flopak coalescing media and any piping is constructed of a combination of CPVC &/or polypropylene (or other materials) for temperature resistance up to 200 F.
Alternate Media Construction:
Standard Flopak media is PVC. HPVC, polypropylene, glass-coupled polypropylene and 304/316 stainless media is available. Contact SkimOIL to determine proper media type for your application. Media plate spacing is available in 1/2″, 3/4″ & 1.2″.
External Storage/Feed Tanks:
A wide variety of tank volumes can be supplied for your water, product and sludge holding needs. Flat bottom and cone bottom designs constructed in polyethylene, fiberglass, steel & stainless steel can be provided.
Effluent Filter Systems:
Solids filter systems can be provided to remove filterable solids from the separator effluent. Contact SkimOIL to determine proper filtration needs for your application.
Specialty Filter Systems:
(Alkyl Quaternary Ammonium Montmorillonite) filter systems can be provided to remove trace hydrocarbons, sheens, DNAPLs, slightly soluble chlorinated hydrocarbons and high molecular weight organics from the separator effluent. Contact SkimOIL to determine proper filtration needs for your application. Can be used to protect and increase GAC lifespan.
Carbon Filtration Systems:
GAC carbon filters can be provided to remove contaminants after the separator. Contact SkimOIL to determine proper system needs for your application.
Emulsion Cracking Systems:
Emulsion cracking systems can be provided to remove oil-in-water emulsions prior to the separator. Contact SkimOIL to determine proper system needs for your application.
pH Adjustment Systems:
pH adjustment systems can be provided to maintain pH levels prior to or after the separator. Contact SkimOIL to determine proper system needs for your application.
System Containerization:
OS separators with any options can be installed in a 20 or 40’ shipping container(s) to simplify system provision and field implementation. System would include the complete mounting, piping and wiring of the system in one or more container as required by the project.
Trailer Mounting:
OS separators can be mounted on a trailer for system mobilization. Trailer design generally includes corner leveling jacks, bubble levels, walkway, toolbox, electric or hydraulic brakes, piping and wiring of options.
Field Skid Mounting:
OS separator system can be mounted to a mobile skid with leveling for quick field mobilization.
Skid Mounted System:
OS separators can be combined with our other treatment equipment and options into a fully integrated, custom designed system completely mounted, plumbed and wired to a system skid. To simplify your need to do the wiring and plumbing on site, reducing your time frames and on site costs, we design around your requirements.
Vent Scrubber:
Separator vapors can be extracted and scrubbed prior to discharge to atmosphere to remove VOC content.
Level Sensors:
Level sensors can be provided to detect water and oil/fuels. One or more sensor points can be provided to perform various functions such as high level, low level, pump on/off based on liquid levels and level detection for DCS controls or other functions based on your needs.
Class 1 Div 1 & 2:
Systems can be designed for use in a class 1 div 1 or 2 environment. Controls, components and wiring are changed to meet the needs of these environments. Intrinsically safe relays are also used for level sensors.
Oil Monitor:
An oil detection system can be provided to monitor effluent oil content and provide various actions based on the oil alarm setpoint. Actions might include: audible/visual alarm, redirection of influent or effluent via actuated valve, shutdown of influent pump or your custom action.
Seismic Design:
The system can be designed for zone 2, 3 or 4 installations.