Produced Water & Effluent Treatment

Oil-Water Separators Supplier Saudi Arabia — API Gravity, CPI Plate-Pack & DAF Separators In Stock

Gulf Union Ozone supplies a complete range of oil-water separators and produced water treatment equipment for the Saudi Arabia oil and gas, refinery, and industrial wastewater market. Our portfolio covers API 421 gravity separators (open-channel and with corrugated plate packs), corrugated plate interceptors (CPI) for free and dispersed oil removal to 60 µm at flow rates up to 500 m³/h, dissolved air flotation (DAF) units for emulsified oil and BOD reduction to outlet concentrations below 10 ppm, free-water knock-out (FWKO) vessels to API 12J for wellhead and gathering station duty, skim tanks to API 12F and API 12J for produced-water polishing, and coalescing plate-pack inserts for retrofit upgrading of existing separators. Belt, rope, and oil-pad skimmers complete the portfolio for surface oil recovery. All equipment is sized to actual produced-water flow rates, oil density, temperature, and droplet size distribution — critical variables in Saudi Aramco onshore field and refinery effluent applications. Gulf Union Ozone holds ISO 9001:2015 certification (CR 4030570569) and maintains corrugated plate packs, coalescing cartridges, and dump valve assemblies in Jeddah warehouse stock for rapid delivery across all Saudi regions. Performance guarantees available for CPI and DAF installations.

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Oil-water separators including API gravity, CPI plate-pack and DAF units for produced water treatment in Saudi Arabia — Gulf Union Ozone Jeddah
SASOSASO certified for Saudi Arabia market supply
ISO 9001:2015Quality Management System — Gulf Union Ozone, Jeddah
CR 4030570569Commercial Registration — Jeddah Chamber of Commerce
20+ YearsOver 20 years supplying industrial separation equipment in Saudi Arabia
Oil-Water Separation Equipment Categories

Product Types in Stock

Gulf Union Ozone carries six oil-water separator and produced water treatment equipment families to API 421, API 12J, API 12F, and SAES-A-007 standards, with full engineering documentation for Saudi Aramco, SABIC, YASREF, and independent refinery projects across Saudi Arabia.

Type 01

API Gravity Separators

Rectangular open-top API 421-design separators with corrugated-plate packs for bulk oil removal from oilfield produced water and refinery slop streams. Designed to API 421 (Management of Water Discharges from Oil Refineries), these concrete-lined or epoxy-coated carbon steel separators provide the primary separation stage at Saudi Arabia refinery and petrochemical effluent treatment plants. Configurations include open-channel (gravity only) and enhanced with corrugated polypropylene plate packs for improved oil droplet coalescence. Inlet distribution baffles, scum baffles, sludge hoppers, belt or rope skimmers, and programmable oil draw-off systems are included as standard. Performance: outlet OiW 100–300 ppm (open) and 30–80 ppm (with plate pack) at design flow. Sized to API 421 using site-specific oil density, viscosity, and temperature data. Full civil and mechanical engineering packages available for EPC contractors and Saudi Aramco EXPEC projects.

Type 02

CPI Plate-Pack Separators

Corrugated plate interceptors offering 20× the separation area of an open API tank in the same footprint; removes droplets down to 60 µm at flow rates up to 500 m³/h. CPI plate packs — in polypropylene, HDPE, or SS 316L for sour and corrosive service — are installed in carbon steel or fibreglass pressure or atmospheric vessels. The inclined corrugated plate geometry creates high-area laminar-flow channels where oil droplets coalesce and rise to the water surface for collection, while solids settle to the vessel sump. Gulf Union Ozone supplies complete CPI separator vessels and also supplies plate-pack inserts for retrofit into existing API gravity separator channels. Standard plate materials: polypropylene (pH 2–12, up to 70°C), HDPE (pH 1–13, up to 60°C), SS 316L (sour service, NACE MR0175 option, up to 120°C). Outlet OiW: 15–30 ppm design target. SAES-A-007 compliant for Saudi Aramco refinery and plant effluent discharge.

Type 03

DAF Units

Dissolved air flotation units for removal of emulsified oil, suspended solids, and BOD to below 10 ppm outlet; used in refinery effluent and SWRO pre-treatment in Saudi Arabia. DAF units operate by dissolving air into a pressurised recycle stream (30–70% of feed) at 400–600 kPa, then releasing it at atmospheric pressure to form microbubbles (20–100 µm) that attach to oil droplets and suspended solids, floating them to the surface for skimmer removal. Gulf Union Ozone supplies pressurised-recycle DAF units and dissolved-oxygen DAF systems in epoxy-coated carbon steel and stainless steel for flow rates from 20 to 300 m³/h. Optional polymer dosing and coagulation/flocculation pre-treatment stages are included for emulsified oil applications where chemical conditioning improves flotation efficiency. Performance: outlet OiW below 10 ppm (pressurised recycle DAF with polymer dosing), BOD reduction 60–80%, TSS below 20 mg/L. Widely used at Saudi refinery API 421 polishing stage and as SWRO feed pre-treatment.

Type 04

Coalescing Plate Packs

Replacement parallel and corrugated plate-pack inserts in polypropylene, HDPE, and stainless steel for API and CPI vessels; extend separator life without full vessel replacement. Gulf Union Ozone maintains a range of standard coalescing plate pack modules for direct-fit replacement into commonly used API separator channel widths (1.0 m to 3.0 m) and CPI vessel diameters (DN 600 to DN 2400). Parallel-plate (flat inclined) packs provide simple fabrication and cleaning access; corrugated-plate packs offer higher specific surface area and improved coalescence for fine oil droplets. Tube-bundle coalescing media in polypropylene is also available for installation in horizontal pressure vessels. Plate module frame: SS 316L or FRP tie-rods and end-plates for corrosion resistance in produced water service. All packs supplied with installation instruction, including manway access alignment jigs to ensure correct plate inclination (45°–60°) for API 421-compliant separator geometry. Typical retrofit project lead time from Jeddah stock: 3–5 working days.

Type 05

Free-Water Knock-Out Vessels

Horizontal FWKO vessels designed to API 12J for early-stage bulk water removal at well-head and gathering station duty on Saudi Aramco onshore fields. FWKOs are the first separation stage in the production train, receiving three-phase (oil, water, gas) wellstream at wellhead conditions and removing the bulk free-water fraction before liquids pass to the production separator. Gulf Union Ozone supplies horizontal FWKO vessels in carbon steel to API 5L / ASME Section VIII, sized using API 12J residence time calculations for the site oil density, water cut, and gas-to-liquid ratio. Vessel internals include inlet distributors, weir plates, vortex-breaker sumps, and mist extractors for gas outlet. Programmable-timer-operated water dump valves (pneumatic or electric) for unattended remote pad operation are included on request. Operating pressures to 100 barg; vessel diameters DN 600 to DN 3600; horizontal lengths 3 m to 18 m. Vertical FWKO vessels are also available for space-constrained wellhead locations. All vessels supplied with ASME VIII pressure vessel design calculation and data sheets.

Type 06

Skim Tanks

Vertical and horizontal skim tanks (API 12F/12J) for produced-water polishing; paired with oil-pad skimmers and programmable-timer dump valves for unattended operation. Skim tanks receive produced water after the FWKO or three-phase separator and provide a final gravity polishing stage before injection or surface discharge. Gulf Union Ozone supplies vertical skim tanks to API 12F (shop-welded, standard sizes 100 bbl to 3,000 bbl) and horizontal skim tanks to API 12J (500 bbl to 10,000 bbl) in CS with internal epoxy lining or SS 316L cladding for corrosive produced water. Removable oil-pad skimmer assemblies in polypropylene with adjustable weir height collect surface oil sheen and residual free oil; collected oil transfers to slop tanks or recycle back to the production system. Programmable electronic timer-operated dump valve assemblies (24 V DC or solar-powered) allow unattended pad operation at remote Saudi Aramco well locations. Dual-compartment designs with internal coalescing packs available for improved outlet quality.

Product Catalog

Complete Oil-Water Separator Range — 28+ Products

All equipment supplied with API/ASME design calculations, material certificates, and SAES-A-007 compliance documentation for Saudi Aramco, SABIC, and independent refinery projects. SASO certified for Saudi Arabia market. ISO 9001:2015 QMS (CR 4030570569).

Separator Type Standard Material Flow Capacity Effluent Oil Spec
API Gravity Separator — Open Channel (No Plate Pack) API 421 / SAES-A-007 Concrete-lined or CS epoxy-coated Up to 500 m³/h 100–300 ppm OiW outlet
API Gravity Separator — with Corrugated Plate Pack API 421 / SAES-A-007 CS with PP corrugated plate pack Up to 500 m³/h 30–80 ppm OiW outlet
CPI Plate-Pack Separator — Polypropylene Plates API 421 / ASTM D4101 CS shell, PP corrugated plates 50–500 m³/h 15–30 ppm OiW outlet
CPI Plate-Pack Separator — HDPE Plates API 421 CS shell, HDPE corrugated plates 50–400 m³/h 15–30 ppm OiW outlet
CPI Plate-Pack Separator — SS 316L Plates (Sour Service) API 421 / NACE MR0175 CS or SS 316L shell, SS 316L plates 50–300 m³/h 15–30 ppm OiW — sour service rated
DAF Unit — Pressurised Recycle API 421 / AWWA MOP 8 CS epoxy-coated or SS 316L 20–300 m³/h Under 10 ppm OiW outlet
DAF Unit — Dissolved Oxygen Type API 421 / AWWA CS or FRP tank, SS 316L internals 20–200 m³/h Under 15 ppm OiW outlet
DAF Unit — with Polymer Dosing System API 421 / SAES-A-007 CS DAF tank, SS 316L dosing skid 30–250 m³/h Under 5 ppm OiW — emulsified oil service
Coalescing Plate Pack — Parallel Plate, PP API 421 / API 12J PP plates, SS 316L / FRP frame Sized to existing vessel Oil droplets above 60 µm to surface
Coalescing Plate Pack — Corrugated, PP (Retrofit Insert) API 421 PP corrugated plates, SS tie-rods Sized to existing vessel 40–60% OiW reduction vs open API channel
Coalescing Tube Pack — PP Tubes (Horizontal Vessel) API 421 / API 12J PP tube bundle, SS 316L frame Sized to existing vessel Oil droplets above 60 µm removed
FWKO Vessel — Horizontal, API 12J API 12J / ASME Section VIII CS per API 5L; internal epoxy lining 500–10,000 bbl/day Bulk free-water removal at wellhead/gathering station
FWKO Vessel — Vertical, API 12J API 12J / ASME Section VIII CS per ASME VIII; internal epoxy lining 200–5,000 bbl/day Bulk free-water removal — space-constrained wellhead locations
FWKO — with Programmable Timer Dump Valve API 12J / SAES-A-007 CS vessel, SS 316L dump valve 500–10,000 bbl/day Unattended remote pad operation — Saudi Aramco onshore fields
Skim Tank — Vertical, API 12F API 12F CS shop-welded; epoxy-lined internals 100–3,000 bbl/day Produced-water polishing after FWKO
Skim Tank — Horizontal, API 12J API 12J CS shop-welded; internal epoxy lining 500–10,000 bbl/day Produced-water polishing — high-throughput gathering station
Skim Tank — Automated (Oil-Pad Skimmer + Timer Dump) API 12F / API 12J CS vessel, SS skimmer & valve assembly 100–5,000 bbl/day Unattended produced-water polishing — remote pad
Belt Skimmer API 421 SS 316L frame, oleophilic polymer belt 0.5–5 m³/h oil recovery Surface oil recovery from open API separator tanks
Rope Skimmer API 421 HDPE oleophilic rope, SS 316L frame 0.5–3 m³/h oil recovery Surface oil recovery in narrow separator channels
Oil-Pad Skimmer API 421 / API 12F PP floating pad, adjustable weir, SS frame Passive — continuous Surface sheen and residual oil removal from skim tanks
Tilted-Plate Separator API 421 CS or FRP shell, PP inclined plates 10–200 m³/h Industrial wastewater primary oil removal — compact footprint
Lamella Separator API 421 CS or SS 316L shell, PP lamella modules 5–150 m³/h Combined oil and suspended solids removal — industrial wastewater
Compact Flotation Unit (CFU) API 421 / DNV-RP-O501 CS pressure vessel, SS 316L internals 50–500 m³/h Produced water polishing — small footprint for remote or offshore locations
Induced Gas Flotation (IGF) API 421 CS epoxy-lined vessel, SS 316L rotor 50–1,000 m³/h Oilfield produced water — no external gas supply required
Hydrocyclone Bank — Liquid-Liquid (Oil-Water) ISO 4186 / API 421 SS 316L or FRP liner hydrocyclones, CS manifold 50–500 m³/h per bank Bulk oil removal — upstream of CPI or DAF polishing stage
Hydrocyclone Bank — Desanding (Liquid-Solid) ISO 4186 CS manifold header, SS 316L hydrocyclone cones 50–500 m³/h Sand and formation solids removal from produced water
CPI Plate Pack Retrofit Kit — PP (Standard Vessel Sizes) API 421 PP corrugated plates, SS tie-rods and end frames Sized to existing API separator channel Doubles separation area — no civil works required
Coalescing Filter Vessel (Polishing Stage) ASME Section VIII / API 421 CS or SS 316L pressure vessel, coalescing media 5–100 m³/h Polishing to below 10 ppm OiW — SWRO feed or final effluent
Why Us

Why Industrial Buyers in Saudi Arabia Choose Gulf Union Ozone for Oil-Water Separators

📋

API 421 & ASME Sec VIII Certified

Design documentation and ASME U-stamp accepted by Saudi Aramco EXPEC facilities. All separators supplied with API 421 sizing calculations, ASME Section VIII pressure vessel design reports, material certificates (EN 10204 3.1), and SAES-A-007 compliance package for Saudi Aramco and SABIC project engineering review.

📦

Plate Pack Inventory in Jeddah

Polypropylene CPI plate packs and coalescing cartridges for common vessel sizes dispatched same-day from Jeddah warehouse. Standard plate-pack modules for API separator channel widths 1.0 m to 3.0 m are held in stock for immediate availability during planned maintenance shutdowns at Saudi Aramco and SABIC facilities.

✅

Effluent Guarantee

Performance guarantees available — outlet OiW below 15 ppm for CPI separators and below 10 ppm for DAF units — backed by factory acceptance test data and pilot-scale testing where required. Gulf Union Ozone engineers size equipment from actual produced-water sample analysis data for reliable performance guarantees on Saudi Arabia projects.

🔧

Turnkey Upgrade Service

Retrofit existing API separators with CPI plate packs — improved performance without civil works. Gulf Union Ozone surveys existing separator vessel internals, designs the plate-pack geometry for the available space, and supplies PP or SS modules that bolt in via the manway. Typical installation is completed in 24–48 hours during a planned shutdown.

Related Products

Also Stocked at Gulf Union Ozone

Tanks & Vessels

Storage Tanks & Vessels

Above-ground and underground storage tanks in CS, SS 316L, FRP, and HDPE to API 650, API 620, and AWWA standards; produced-water storage, slop tanks, and chemical dosing vessels for Saudi Arabia oil & gas and industrial facilities.
Pumps

Dosing & Metering Pumps

Diaphragm, peristaltic, and piston metering pumps for polymer dosing, coagulant injection, scale inhibitor dosing, and chemical feed at oil-water separator and DAF pre-treatment stages across Saudi Arabia.
Pumps

Centrifugal Pumps

API 610 process pumps, end-suction pumps, and submersible pumps in SS 316L and duplex stainless steel for produced-water transfer, effluent lifting, and DAF recycle duty in Saudi Arabia oilfields and refineries.
Valves

Industrial Valves

Gate, globe, check, ball, and butterfly valves in SS 316L, duplex SS, and carbon steel — API 600, API 602, ASME B16.34 — for produced-water and effluent treatment pipework in Saudi Arabia oil & gas and petrochemical facilities.
Frequently Asked Questions

Oil-Water Separators in Saudi Arabia — Common Questions

What effluent quality can a CPI plate-pack separator achieve?

A properly designed CPI separator typically achieves outlet oil-in-water concentrations of 15–30 ppm for free and dispersed oil droplets above 60 µm. For tighter specifications (under 15 ppm), a downstream skim tank or DAF polishing stage is recommended. Performance depends on oil density, viscosity, temperature and flow rate; Gulf Union Ozone engineers size the separator from actual produced-water sample data when available.

Which API standard governs oil-water separators for Saudi Aramco oilfield projects?

Oilfield free-water knock-out and skim vessels follow API 12J (Specification for Oil and Gas Separators) and API 12F (Specification for Shop-Welded Tanks). Refinery API separators are designed to API 421 (Management of Water Discharges from Oil Refineries). Saudi Aramco SAES-A-007 (Wastewater Treatment) references these standards and sets site-specific discharge limits for Saudi operations.

Can Gulf Union Ozone retrofit CPI plates into an existing API separator?

Yes. Retrofit CPI plate packs avoid major civil works. We survey the existing vessel internals, design the plate-pack geometry to suit the available space, and supply polypropylene or stainless plate modules that bolt in via the existing manway. The retrofit typically doubles effective separation area and reduces outlet oil-in-water by 40–60% compared to the open-channel API design. Installation is usually completed in 24–48 hours during a planned shutdown.

Get a Quote

Request an Oil-Water Separators Quotation

To get a fast quotation, provide: application type (produced water treatment / refinery effluent / industrial wastewater), design flow rate (m³/h), inlet oil-in-water concentration (ppm or % v/v), required outlet oil-in-water specification (ppm), water and oil temperatures, oil API gravity or density, solids content (if known), operating pressure, separator type preference (API gravity / CPI / DAF / FWKO / skim tank), applicable standards (API 12J / API 421 / SAES-A-007), and delivery location in Saudi Arabia.

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Recent Deliveries

  • • API oil-water separator — Saudi Aramco Khurais central processing facility, February 2026
  • • CPI coalescer units — YASREF refinery wastewater system, November 2025
  • • DAF flotation units — SABIC Yanbu industrial effluent plant, September 2025

CR 4030570569 | ISO 9001:2015 | Jeddah, Saudi Arabia  —  Saudi Aramco vendor compliance · SAEP-347 credentials

Technical content reviewed by Gulf Union Ozone's Engineering Team, Jeddah — 2026

Inventory updated: September 2026

In Summary

Gulf Union Ozone Trading Co. supplies Oil-Water Separators to industrial customers across Saudi Arabia with delivery from our Jeddah warehouse — all products ship with original certificates and compliance documentation for Aramco, SABIC, and government projects.

In Summary

Oil-Water Separators from Gulf Union Ozone serves Saudi Aramco operations, SABIC, SADARA, SEC utilities, NEOM mega-projects, and major industrial facilities across the Kingdom — our inventory covers the most common specifications and ratings.

In Summary

Gulf Union Ozone stocks a comprehensive range of Oil-Water Separators — contact us for immediate availability confirmation and a competitive quotation with full compliance documentation and MTC traceability.

In Summary

For urgent Oil-Water Separators procurement in Saudi Arabia, WhatsApp +966 55 098 8062 — our team confirms stock availability within the hour and provides competitive quotations with full compliance documentation for all industrial sectors.