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Dissolved Air Flotation (DAF) Systems in London, Ontario
Industrial Wastewater Canada sizes and supplies dissolved air flotation (daf) systems for plants in London, Ontario. Local demand is driven by food & beverage processing, agri-food, auto parts, chemicals, discharging under London's sewer-use rules toward Thames River. Quote requests with flow rate and effluent type get a sized proposal.
Dissolved air flotation earns its keep in one specific situation: wastewater loaded with fats, oils, grease and suspended solids that settle poorly or not at all. That is the daily reality of food and beverage plants, dairies, meat and poultry processors and rendering operations, which is why the DAF has become the default pre-treatment technology in those sectors across Canada.
How dissolved air flotation works
The process is the inverse of settling. A portion of clarified effluent is saturated with air under pressure and released at the tank inlet, where it forms clouds of microbubbles. The bubbles attach to solids and grease particles, float them to the surface as a stable sludge blanket, and a skimmer removes the blanket continuously. With the integrated chemical dosing and flocculation tube on our units, coagulant and polymer conditioning happens in-line ahead of the flotation zone, and removal rates run from 90 to 99 percent on TSS and FOG when the chemistry is tuned to the stream.
Surcharges drive the payback
The economics are usually driven by surcharges rather than fines. A plant discharging over-strength effluent to a Canadian municipality pays for it, either through an industrial waste surcharge agreement in much of Ontario or through permit conditions like Metro Vancouver's Bylaw 299. Those fees scale with production and never stop. A DAF is a one-time capital cost that cuts the surcharged load at the source, and we size every unit with that payback math in view, using your actual surcharge invoice where you have one. For many food processors the system pays for itself against fees alone.
Stainless skids, ready to connect
Construction is stainless steel, and the compact skid packages arrive pre-piped and pre-wired, which keeps installation to utility connections and commissioning rather than a fabrication project on your floor. A DAF also protects whatever sits downstream: a biological system runs far more stably when the grease load is removed ahead of it, and a municipality sees a plant that holds its numbers.
Why we size from your effluent
Sizing a DAF from a brochure is guesswork. Sizing it from data takes three inputs: your peak flow rate, a lab analysis of the effluent or at minimum a description of the process producing it, and your discharge limits. Send those and we return a sized configuration, budget price and delivery timeline for your plant, anywhere in Canada, with every proposal reviewed by a process engineer first. Commissioning includes jar testing on site to lock in the coagulant and polymer recipe, and operator training is part of the startup scope, because a DAF tuned once and understood by the people running it holds its removal rates for years.
London sits at the centre of southwestern Ontario's agri-food belt, and its plants process what the surrounding counties grow: vegetables, dairy, grains and meat, alongside beverage bottlers, auto-parts makers and specialty chemical producers. The city of 422,000 discharges to the Thames River through six treatment plants, and Wastewater By-law WM-28 sets the terms for the industrial share of that flow. Agri-food seasonality is the sizing problem A London vegetable processor might run near zero flow in May and 1,500 m³/day at harvest, with BOD tracking the same curve. Centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28. That is the regulatory backdrop for dissolved Air Flotation (DAF) Systems in London: equipment gets sized against the local limits on the route to Thames River, not against a national average.
Location
London, Ontario
Population 422K
Receiving Water
Thames River
Pricing
Sized & quoted per project
What's Included in London
Sizing against London's sewer-use and surcharge regime (centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28)
Support for direct-discharge projects requiring an Environmental Compliance Approval from Ontario's Ministry of the Environment, Conservation and Parks
Effluent characterization matched to London's dominant dischargers: food & beverage processing, agri-food, auto parts, chemicals
Discharge route review for systems releasing toward Thames River
Dissolved Air Flotation (DAF) Systems on the ground in London
London's harvest-season surges, near-zero flow in May and 1,500 m³/day in September, make equalization and staged DAF trains the core of industrial wastewater design under By-law WM-28. In London, the plants asking about dissolved Air Flotation (DAF) Systems are mostly in food & beverage processing, agri-food, auto parts and chemicals, and each of those sectors puts a different load on a treatment train. Centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28. Direct discharge toward Thames River instead requires an Environmental Compliance Approval from Ontario's Ministry of the Environment, Conservation and Parks. In a city of London's size the industrial dischargers are few enough that the utility knows each one by name, which cuts both ways at permit renewal. Projects in London tend to be one-of-a-kind rather than repeat configurations, which is exactly the case where sizing from measured effluent data matters most.
FAQ
Frequently Asked Questions
Everything you need to know about our services.
Do you supply dissolved Air Flotation (DAF) Systems in London?
Yes. Industrial Wastewater Canada sizes and supplies dissolved Air Flotation (DAF) Systems for plants across London and the surrounding region. Most local demand comes from food & beverage processing, agri-food, auto parts, chemicals. Send a quote request with your flow rate and effluent type and a sized proposal follows.
What discharge rules apply to industrial wastewater in London?
Centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28. Sizing pretreatment for the peak wastes capital eleven months a year; sizing for the average violates the by-law every September. The designs that work here lean on equalization storage, modular DAF trains that switch on in stages, and honest conversations with the city about seasonal discharge agreements. Plants discharging to the municipal sewer answer to that regime; anything released directly toward Thames River needs an Environmental Compliance Approval from Ontario's Ministry of the Environment, Conservation and Parks. We size equipment against whichever limit governs your outfall.
How is dissolved Air Flotation (DAF) Systems sized for a plant in London?
From your numbers, not from the city's. We start with measured flow and effluent characterization, then check the result against London's local limits. A processor in a city of 422K with food & beverage processing as the dominant sector rarely has the same loading profile as its neighbours, so treatability data drives the selection.
What does dissolved Air Flotation (DAF) Systems cost in London?
There is no list price; every system is sized and quoted per project. The economics are local, though. Auto-parts and chemical plants bring steadier flows with oil, metals and pH issues instead. The common thread is the Thames, a warm, slow river whose limited assimilative capacity keeps London's by-law enforcement consistent. Payback in London is usually calculated against those surcharge and compliance costs, and the quote spells that comparison out.
Send the flow rate. Get the system.
Flow, contaminants, discharge limit. An engineer replies with a sized treatment train and a quote — no obligation.
In this city
Equipment available here.
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→Food & Beverage Processing→Dairy Processing→Breweries & Distilleries→Meat & Poultry Processing→Pulp & Paper→Pharmaceutical & Biotech→Textile & Dyeing→Mining & Mineral Processing→Oil & Gas / Produced Water→Metal Finishing & Plating→Chemical Manufacturing→Power, Boilers & Cooling Towers→
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