Products
Oil Water Separators
Engineered separation for produced water and hydrocarbon recovery.
Skid-mounted oil water separator package ready for site installation
Overview
Basiia designs and packages oil water separator systems for upstream, midstream, and downstream applications. Our units are engineered to handle high-volume produced water streams, achieving effluent quality compliant with discharge and reinjection specifications. Each package is designed around the specific fluid characteristics, flow rates, and regulatory requirements of the project.
Oil water separation is a multi-stage process that exploits the density differential between hydrocarbons and water to achieve progressive phase separation. Basiia's packages integrate primary gravity separation, secondary coalescing media, and tertiary polishing stages into a single engineered skid — sized to the specific flow rate, oil concentration, droplet size distribution, and target effluent quality of each project. All packages are supplied with full P&IDs, instrumentation schedules, and vendor data books.
Typical Applications
- Produced water treatment in oil and gas facilities
- Stormwater and runoff treatment at refineries
- Bilge water treatment for marine and offshore applications
- Industrial wastewater pre-treatment
- Tank farm drainage systems
How It Works
Separation Process
Inlet Distribution & Primary Separation
Incoming fluid enters through an engineered inlet distributor that reduces turbulence and promotes laminar flow. Free oil and gross solids separate by gravity in the primary separation chamber. A skimmer weir collects the floating oil layer for recovery, while settled solids are directed to a sludge sump with automated drawoff.
Coalescing Media Stage
The partially treated water passes through a coalescing media pack — typically corrugated plate interceptor (CPI) or parallel plate pack — where fine oil droplets collide and merge into larger droplets with sufficient buoyancy to rise and be captured. Media configuration and spacing are selected based on the specific gravity of the oil phase and design flow velocity.
Secondary Gravity Separation
Coalesced oil droplets migrate to the surface in the secondary separation zone and are collected by a secondary skimmer weir. This stage achieves the bulk of the residual oil removal, typically reducing oil-in-water concentration to below 100 mg/L prior to any polishing stage.
Effluent Polishing (Optional)
Where discharge or reinjection specifications require effluent quality below 15–30 mg/L oil-in-water, a downstream polishing stage is incorporated. Options include induced gas flotation (IGF), walnut shell filtration, or media filtration, selected based on the target effluent quality and downstream process requirements.
Technical Data
Design Parameters
All parameters are indicative. Final design specifications are determined by project-specific process data and client requirements.
Key Features
Engineered for Performance
Gravity & Coalescing Separation
Multi-stage separation combining gravity settling with corrugated plate interceptor (CPI) or parallel plate coalescing media for high-efficiency oil removal down to fine droplet sizes.
Skid-Mounted Packages
Fully integrated skid packages with inlet distribution, separation vessel, oil recovery system, sludge drawoff, instrumentation, and local control panel — factory tested before shipment.
API 421 Compliant Design
Separator sizing and design in strict accordance with API 421, including Stokes' Law droplet rise velocity calculations and design flow margin for upset conditions.
Automated Level & Oil Control
Automated oil and water level control with interface level detection, oil skimmer operation, high-level shutdown, and remote monitoring via PLC/SCADA.
Applicable Standards
- API 421
- ASME VIII Div. 1
- ISO 9001
- ATEX / IECEx (where applicable)
- PED 2014/68/EU (where applicable)
Related Products
Downloads
Brochures & Technical Documents
Download product brochures, technical datasheets, and compliance summaries for the Oil Water Separators range. Upload your own documents via the media manager to replace these placeholders.
Oil Water Separator — Product Brochure
Full product brochure covering the Basiia OWS range, design approach, and standard configurations
Basiia OWS product brochure
Concrete OWS — Basiia
Concrete oil water separator design, specifications, and installation details
Concrete OWS product datasheet by Basiia
Compact OWS Module
Compact modular oil water separator unit — design parameters and configurations
Compact OWS module technical datasheet
Oil Coalescer Filter Pack (COPW)
Coalescing filter pack specifications, media selection, and performance data
COPW oil coalescer filter pack technical document
Grease Interceptor
Grease interceptor systems for removal of fats, oils, and grease from commercial and industrial effluents
Grease interceptor — product brochure
Pilot Hydration Testing Unit
Portable pilot hydration testing unit for on-site water quality and treatment performance evaluation
Pilot hydration testing unit — technical brochure
Get in Touch
Discuss Your Oil Water Separators Requirements
Our engineering team is available to review your project requirements and provide a technical proposal. Contact us to start the conversation.