API 421API Oil–Water Separators
Oil–Water SeparationView Details
Oil–Water Separation
Cross-Flow Separators
Laminar-flow, tilted-plate separators built for heavy fat, oil and grease loads — capturing oil droplets as small as 60 microns in a footprint that fits difficult retrofits.
What it is
The Heetu K-Pack Cross-Flow Separator (CFS) moves wastewater horizontally through tilted plate packs under gentle, plug-flow conditions. That non-turbulent path lets even fine oil droplets coalesce and rise while solids slide down the plates — making it especially effective on heavy fat, oil and grease streams.
Its compact geometry makes the CFS a natural fit for retrofits and space-constrained plants that still need dependable primary separation.
Key features
- Laminar plug-flow across tilted plate packs
- Captures oil droplets as small as 60 microns
- Compact footprint suited to retrofits
- Strong performance on heavy FOG loads
- Flow range from 2 to 150 m³/hr
- Material and sizing options per stream
How it works
Horizontal plug flow
Wastewater enters through tilted plate packs under calm, non-turbulent conditions.
Oil coalesces and rises
Droplets merge on the plates and rise to the surface for removal.
Solids slide down
Settleable solids slide along the plates into a dedicated sludge hopper.
Clarified water leaves
Treated water exits for discharge or downstream processing.
Where it is used
Applications
- Dairy and food processing effluent
- Industrial process-water treatment
- Petrochemical pre-treatment
- Heavy FOG streams
- Space-constrained retrofit projects
Industries served
Food & Beverage
Dairy
Petrochemical
General Industry
Why it delivers
- Excellent fat, oil and grease removal
- Fits where a conventional separator will not
- Low turbulence protects delicate flocs
- Simple, reliable gravity-assisted operation
- Ideal as pre-treatment ahead of DAF or biology
Engineering edge
- Tilted plates give large area in a small vessel
- Handles fine droplets down to 60 microns
- Gentle hydraulics preserve upstream chemistry
- Proven on demanding fat and grease duties
Technical data
| Free-oil removal | 50–90% |
| TSS removal | up to 90% |
| Flow capacity | 2–150 m³/hr |
| Min. droplet size | ~60 micron |
| Installation | New-build or retrofit |
| Construction | SS · MS · FRP options |
Specifications are indicative. Final design is engineered to your effluent and site conditions.
Why Heetu K-Pack
Engineered to your stream
Every unit is sized to your flow, load and discharge targets — never an off-the-shelf compromise.
Built in-house
Fabricated and QA-tested in our own workshop for controlled, documented quality.
Proven performance
Field-validated removal rates from pilot through full-scale operation.
Lifetime support
Commissioning, spares and responsive after-sales for the life of your plant.
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Ready to specify your Cross-Flow Separators?
Tell us about your process and we will recommend and size the right configuration.