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Industrial Wastewater Canada sizes and supplies coalescing filters for plants in Montreal, Quebec. Local demand is driven by aerospace, food & beverage, pharmaceuticals, petrochemicals, discharging under Montreal's sewer-use rules toward St. Lawrence River. Quote requests with flow rate and effluent type get a sized proposal.

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.
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 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 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.
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.
An industrial discharger in Montreal answers to two regulators at once. The metropolitan community's By-law 2008-47 governs what the city's sewers will accept, while Quebec's environment ministry (MELCCFP) issues the industrial attestations that direct dischargers to the St. Lawrence must hold. Quebec MELCCFP industrial discharge attestations; CMM By-law 2008-47 governs sewer discharge across the metro. That is the regulatory backdrop for coalescing Filters in Montreal: equipment gets sized against the local limits on the route to St. Lawrence River, not against a national average.
Location
Montreal, Quebec
Population 1,763K
Receiving Water
St. Lawrence River
Pricing
Sized & quoted per project
Montreal industrial wastewater lives under a double layer of regulation, CMM By-law 2008-47 for the sewer and MELCCFP attestations for the St. Lawrence, and every compliance file has to stand up in French. In Montreal, the plants asking about coalescing Filters are mostly in aerospace, food & beverage, pharmaceuticals and petrochemicals, and each of those sectors puts a different load on a treatment train. Quebec MELCCFP industrial discharge attestations; CMM By-law 2008-47 governs sewer discharge across the metro. Direct discharge toward St. Lawrence River instead requires a ministerial authorization under section 22 of Quebec's Environment Quality Act. A metro of Montreal's size runs enough industrial flow that the municipal plant polices its intake closely, and surcharge invoices arrive on schedule. We quote coalescing Filters in Montreal often, and the sizing conversation usually starts from a surcharge bill or a compliance letter rather than from a catalogue.
Everything you need to know about our services.
Yes. Industrial Wastewater Canada sizes and supplies coalescing Filters for plants across Montreal and the surrounding region. Most local demand comes from aerospace, food & beverage, pharmaceuticals, petrochemicals. Send a quote request with your flow rate and effluent type and a sized proposal follows.
Quebec MELCCFP industrial discharge attestations; CMM By-law 2008-47 governs sewer discharge across the metro. Aerospace surface-treatment shops, food and beverage plants, pharmaceutical manufacturers and the east-end petrochemical corridor all navigate this double layer. Two regulators, one discharge point The practical consequence is paperwork with teeth: a pretreatment system here has to be documented in French, matched to the attestation's specific parameter list, and able to prove itself with composite sampling rather than grab samples. Plants discharging to the municipal sewer answer to that regime; anything released directly toward St. Lawrence River needs a ministerial authorization under section 22 of Quebec's Environment Quality Act. We size equipment against whichever limit governs your outfall.
From your numbers, not from the city's. We start with measured flow and effluent characterization, then check the result against Montreal's local limits. A processor in a city of 1,763K with aerospace as the dominant sector rarely has the same loading profile as its neighbours, so treatability data drives the selection.
There is no list price; every system is sized and quoted per project. The economics are local, though. Aerospace platers worry about chromium and cyanide limits measured in the hundreds of micrograms per litre; a brewery worries about BOD surcharges instead. We build the treatment train around the specific attestation or by-law schedule a plant holds, then set up the sampling and reporting so the compliance file writes itself. Payback in Montreal is usually calculated against those surcharge and compliance costs, and the quote spells that comparison out.
Flow, contaminants, discharge limit. An engineer replies with a sized treatment train and a quote — no obligation.