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Coalescing Filters
Sized to your flow rate and effluent. Request a quote for a sized proposal.
We supply
Industrial Wastewater Treatment Systems
Oil Water Separators
Dissolved Air Flotation (DAF) Systems
Membrane Bioreactor (MBR) Systems
MBBR Systems (Moving Bed Biofilm Reactors)
Lamella Clarifiers
Sludge Dewatering Screw Presses
Dewatering Centrifuges
Industrial Reverse Osmosis Systems
Wastewater Evaporators & ZLD Systems
Belt Filter Presses- Coalescing Filters
Industrial Bag & Cartridge Filtration
By quote
Coalescing Filters Overview
Free oil rises out of water on its own if you give it a quiet tank and a little time. Emulsified oil does not. Droplets of 20 microns and below stay dispersed indefinitely, sail straight through a gravity separator, and show up in your effluent sample as an oil and grease exceedance you cannot explain. The coalescing filter exists for exactly this gap.
Collision and capture
The mechanism is collision and capture. Wastewater passes through oleophilic media or inclined plate packs, surfaces that oil wets preferentially. Fine droplets collide with the media, stick, and merge with the droplets already there, growing until buoyancy takes over and carries them to the surface for skimming. A compact vessel can hold effluent oil below 10 to 15 mg/L on free and dispersed oil, performance a plain gravity tank cannot reach at any residence time that fits inside a building.
Where coalescers earn their place
Where these units earn their place: downstream of machine shops and compressor condensate systems, on wash bay and fuel handling drainage, and as a polishing stage after an API separator, capturing the fine fraction the big basin lets through. We supply both liquid-liquid configurations for oily water and gas-liquid configurations that strip sub-micron aerosols from compressed air and gas streams, in stainless or carbon steel vessels matched to the service.
Two installation details that matter
Two housekeeping details separate a good installation from a frustrating one. First, media type: plate-pack and permanent-media coalescers are not consumables; the packs are removed, washed and returned, typically serving for the life of the vessel. Cartridge-style elements do load up with solids and are changed on a differential-pressure schedule, typically once or twice a year in industrial service, and our vessels carry differential-pressure indicators so the change-out is scheduled rather than discovered. Second, upstream solids: a simple strainer or settling stage ahead of the coalescer extends media life dramatically, and we design for easy pack removal so cleaning stays a maintenance task instead of a shutdown. We also cross-reference OEM cartridges directly, so replacement elements for an existing housing are a part number away.
What coalescers cannot do
One honest limit: coalescers do not remove chemically emulsified or dissolved oil. Surfactant-stabilized emulsions need chemical treatment or flotation, and we will say so before quoting. Send your flow rate, an analysis and your discharge limit, and a process engineer returns a sized configuration, budget price and delivery timeline, anywhere in Canada. Spare packs and cartridges are stocked against your housing model, and change-out procedures are documented at commissioning so the differential-pressure alarm leads to a scheduled swap, not a scramble.
Coalescing Filters: at a glance
| Equipment | Coalescing Filters |
|---|---|
| Best for | |
| Typical price range | By quote |
| Service area | Canada |
Key takeaways
- Coalescing Filters is a fit when your effluent matches this profile:
- Budget guidance: By quote, depending on flow rate and effluent characterization.
- Included in scope: Sub-micron aerosol and oil removal
Coalescing Filters Features & Specifications
Sub-micron aerosol and oil removal
Liquid-liquid and gas-liquid configurations
Direct OEM cartridge cross-references
Stainless and carbon steel vessels
Differential-pressure change-out indicators
FAQ
Frequently Asked Questions
Everything you need to know about our services.
What is Coalescing Filters used for?
Free oil rises out of water on its own if you give it a quiet tank and a little time. Emulsified oil does not. Droplets of 20 microns and below stay dispersed indefinitely, sail straight through a gravity separator, and show up in your effluent sample as an oil and grease exceedance you cannot explain.
What is included with Coalescing Filters?
Each configuration covers Sub-micron aerosol and oil removal, Liquid-liquid and gas-liquid configurations, Direct OEM cartridge cross-references, Stainless and carbon steel vessels and Differential-pressure change-out indicators. Scope is confirmed in the written proposal before fabrication starts.
How much does Coalescing Filters cost in Canada?
Budget pricing runs By quote. The final number depends on your flow rate, contaminant profile and the discharge limits in your permit or municipal sewer by-law, so we quote against a lab analysis rather than a catalogue page.
What other equipment works alongside Coalescing Filters?
Most treatment trains pair coalescing filters with upstream or downstream stages. From our catalogue that most often means Industrial Wastewater Treatment Systems, Oil Water Separators and Dissolved Air Flotation (DAF) Systems. We size the whole train together, so the stages are matched on flow and loading rather than bought piecemeal.
Do you deliver and commission Coalescing Filters across Canada?
Yes. Industrial Wastewater Canada is a service-area business covering Canada: equipment is sized and quoted per project, then shipped and commissioned at your site in whichever province you operate.
Send the flow rate. Get the system.
Flow, contaminants, discharge limit. An engineer replies with a sized treatment train and a quote — no obligation.