API Separator Image
API Oil Water Separator
Gravity-based separator designed for high free-oil loading, grit settling, oil skimming, and primary oily wastewater pretreatment in heavy-duty industrial sites.
OILY WASTEWATER TREATMENT SOLUTIONS
Industrial Oil
Water Separator for
Oily Wastewater Treatment
WTE Oil Water Separator systems are engineered to treat oily wastewater from workshops, wash bays, refineries, petrochemical units, power plants, and manufacturing facilities. Our OWS systems reduce free oil, grease, hydrocarbons, and settleable solids to protect downstream ETP performance and compliance.
OWS System View
Complete Oil Water Separator Overview
View the complete oil water separator flow from inlet calming and solids settling to gravity separation, coalescing plate separation, oil skimming, sludge removal, and clarified water outlet.
Engineered Oil & Hydrocarbon Separation System
Oily wastewater enters through an inlet chamber where velocity is reduced, grit and heavy solids begin settling, and flow is distributed evenly across the separator.
Oil droplets rise by gravity and coalesce on plates or media, while settled sludge is retained and clarified water flows to downstream polishing, ETP, reuse, or discharge.
Oily Water InletOil-contaminated wastewater enters through the inlet line with controlled velocity and uniform distribution.
Gravity Separation ZoneFree oil rises to the surface while heavier grit, sand, and suspended solids settle at the bottom.
Coalescing Plate ZoneInclined plates or coalescing media enlarge fine oil droplets for faster separation and skimming.
Clarified Water OutletOil-reduced clarified water exits for polishing, ETP feed, reuse, recycling, or compliant discharge.
Inlet ChamberControlled oily water inlet
Separation ChamberGravity and coalescing zones for oil removal.
Skimmer & PanelOil removal and control automation
Sludge HopperSettled solids collection
OWS System View
Overview
What Is an Oil Water Separator?
An Oil Water Separator treats wastewater contaminated with free oil, grease, hydrocarbons, and settleable solids from workshops, wash bays, refineries, petrochemical units, power plants, food processing, metal finishing, and manufacturing facilities. WTE designs OWS systems for reliable oil removal before ETP, filtration, reuse, recycling, or discharge.
WTE designs Oil Water Separator systems that support Effluent Treatment Plant, Tertiary Treatment Plant, and Zero Liquid Discharge System integration.
Oil & Grease RemovalHydrocarbon ControlSolids SettlingETP-Ready Output
OWS System Highlights
Designed around oil concentration, flow rate, droplet size, solids load, outlet target, and site space
Engineered for free oil, grease, hydrocarbons, and settleable solids reduction before downstream wastewater treatment.
24/7Separation Operation
LowOil Carryover Risk
AutoSkimmer & Pump Control
CustomOWS Capacity Selection
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Systems We Offer
Oil Water Separator Configurations
Select API, CPI, TPI, coalescing plate, packaged, or skid-mounted Oil Water Separator systems based on flow rate, oil droplet size, oil concentration, solids load, outlet quality, space, and automation needs.
CPI Separator Image
CPI Oil Water Separator
Corrugated Plate Interceptor system that reduces separation distance and improves oil droplet rise efficiency for compact oily wastewater treatment.
TPI Separator Image
TPI Oil Water Separator
Tilted Plate Interceptor system with inclined plates for improved oil-water separation, solids settling, and reduced footprint in process effluent applications.
Packaged OWS Image
Packaged / Skid-Mounted OWS
Factory-built compact OWS with separator tank, coalescing media, oil skimmer, sludge hopper, pumps, piping, instruments, and control panel for fast installation.
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Key Benefits
Performance Benefits
A properly designed oil water separator reduces free oil, grease, floating hydrocarbons, and settleable solids while protecting downstream ETP units, reuse systems, drains, and compliance performance.
Reliable Oil & Grease SeparationGravity and coalescing separation remove free oil and floating hydrocarbons before water enters filtration, DAF, ETP, or discharge polishing.
Protection for Downstream ETPProtects downstream biological, chemical, filtration, and reuse systems from oil shock loads and floating hydrocarbon carryover.
Reduced Oil CarryoverCorrect retention time, laminar flow, baffles, oil skimming, and plate packs help minimize oil escape and improve separator stability.
Automatic Oil SkimmingAutomatic skimmers, level controls, pumps, alarms, and instrumentation can reduce manual oil removal and improve day-to-day operation.
Compact Modular DesignPackaged and skid-mounted OWS layouts can reduce civil work, simplify installation, and support future capacity expansion.
Compliance SupportSystem design considers flow variation, oil droplet size, oil & grease concentration, TSS, retention time, plate loading rate, sludge storage, and outlet norms.
Working Process
How an Oil Water Separator Works
The Oil Water Separator uses inlet calming, gravity separation, coalescing media, oil skimming, sludge collection, and clarified water discharge to treat oily wastewater efficiently.
1
Inlet Calming & Grit Settling
Oily wastewater enters an inlet chamber where turbulence is reduced and grit, sand, and heavy suspended solids begin settling.
2
Gravity Oil Separation
Because oil has lower specific gravity than water, free oil droplets rise to the surface while solids settle under controlled flow conditions.
3
Coalescing Plate Separation
Fine oil droplets contact inclined plates or coalescing media, join together, grow larger, and rise faster for efficient removal.
4
Oil Skimming & Clarified Outlet
Separated oil is skimmed into an oil collection chamber, sludge is drained periodically, and clarified water flows to ETP, polishing, reuse, or discharge.
Applications
Industrial Applications
Used in industrial, automotive, petrochemical, refinery, power, marine, food processing, and manufacturing facilities that need oil & grease removal from wastewater before treatment, reuse, or discharge.
Automobile Workshops & Service StationsRefineries & Petrochemical PlantsPower Plants & DG Set AreasVehicle Wash Bays & GaragesFood, Dairy & Edible Oil UnitsEngineering & Metal Processing PlantsPorts, Marine & Stormwater DrainsETP Pretreatment & Reuse Systems
Project Gallery
Oil Water Separator Installation Views
Showcase Oil Water Separator installations including RCC or MS tanks, packaged OWS modules, inlet chambers, coalescing plate packs, oil skimmers, sludge hoppers, transfer pumps, instruments, and downstream ETP connections.
Gallery Image 1
Inlet chamber and flow distribution arrangementGallery Image 2
Coalescing plate pack and separator chamberGallery Image 3
Oil skimmer with oil collection chamberGallery Image 4
Sludge hopper and drain arrangementGallery Image 5
Downstream filtration or ETP connectionGallery Image 6
Commissioned oily wastewater treatment systemApplications & Selection
How This Oil Water Separator Improves Wastewater Performance
This Oil Water Separator is designed for facilities that need reliable oily wastewater pretreatment, reduced oil carryover, protected downstream equipment, and stronger compliance performance.
Industrial Applications
WTE recommends the correct OWS system after reviewing oily wastewater flow, oil load, droplet size, TSS, temperature, outlet target, operating pattern, and site layout.
- • Oily wastewater treatment for workshops, refineries, garages, wash bays, power plants, and manufacturing units
- • Free oil, grease, floating hydrocarbon, grit, sand, and settleable solids removal
- • Pretreatment before ETP, DAF, filtration, activated carbon, reuse, recycling, or discharge
- • Integrated with oil collection tanks, sludge handling, chemical treatment, ETP, RO, or ZLD systems
What We Review Before Recommending an OWS System
WTE studies inlet oily wastewater characteristics, hydraulic peaks, oil droplet size, solids load, separator technology, footprint, oil/sludge handling, and automation level before recommending an OWS system.
- • Average and peak oily wastewater flow, batch discharge pattern, and hydraulic peak factor
- • Inlet oil & grease, free oil, emulsified oil risk, TSS, pH, temperature, and expected variation
- • Technology selection: API, CPI, TPI, coalescing plate, packaged, skid-mounted, or civil OWS
- • Outlet oil limit, ETP feed target, reuse requirement, footprint, automation level, oil/sludge management, and power availability
FAQ
Oil Water Separator FAQs
Practical answers for buyers comparing Oil Water Separator systems, OWS technology, oil removal performance, installation, compliance, and maintenance.
Where is an Oil Water Separator used?
An Oil Water Separator is used in workshops, wash bays, refineries, power plants, metal processing, food units, and manufacturing plants handling oily wastewater.
How does an Oil Water Separator work?
An Oil Water Separator slows oily wastewater, settles solids, separates free oil by gravity, coalesces fine droplets, and discharges clarified water for further treatment.
What oil removal efficiency can an industrial Oil Water Separator achieve?
Efficiency depends on inlet oil load, droplet size, TSS, flow variation, retention time, and OWS configuration selected by WTE for the site.
Can an Oil Water Separator treat heavy industrial oily wastewater?
Yes. WTE designs industrial Oil Water Separator systems for heavy-duty oily wastewater with suitable tank sizing, coalescing media, skimmers, pumps, and sludge removal.
How do I choose the right Oil Water Separator supplier?
Choose WTE for site-specific OWS design, correct technology selection, industrial-grade fabrication, automation options, commissioning support, and long-term service assistance.
Does WTE supply automatic Oil Water Separator systems?
Yes. WTE supplies manual, semi-automatic, and automatic Oil Water Separator systems with skimmers, pumps, level controls, sludge drains, alarms, and control panels.