Introducing Dissolved Air Flotation (DAF) Clarifiers from M.W. Watermark
M.W. Watermark is proud to serve as a comprehensive resource for all of your wastewater treatment equipment, parts and service needs.
In our latest effort to make a difference, we are pleased to announce the latest addition to our line of top quality dewatering products: Dissolved Air Flotation (DAF) Clarifiers.
The M.W. Watermark Dissolved Air Flotation (DAF) clarifier is a very effective tool in removing suspended solids, fats, oils, metals and non-soluble BOD from a waste stream.
Dissolved Air Flotation (DAF) Clarifiers
In a DAF clarifier, microscopic air bubbles are produced and mixed with the incoming wastewater. The air bubbles attach themselves to the contaminants, which gives them buoyancy. The buoyant mixture of particles and air bubbles float to the surface and are removed by a skimming mechanism.
Air bubble production is achieved by pressurizing a portion of the clean effluent and recycling it back to the influent to be mixed with the waste stream. As the super saturated water enters the DAF the pressure is removed and millions of microscopic air bubbles are produced. The bubbles become entrained in the solids, rise to the surface and form a bed of material that is skimmed into an isolated chamber.
The effluent quality of a DAF is greatly improved with chemical pre-treatment. Our Snake-Blend™ and CAT systems offer the latest in design technologies. Removal rates for FOG and TSS are typically 95% to 97% with proper chemical pretreatment.
The Snake-Blend system is an effective way to introduce and mix a chemical recipe using water turbulence in a series of winding pipes. The design features winding, clog free mixing zones for ideal mixing of the chemistry. The design is compact and has no moving parts.
The Chemical Addition Tank (CAT) system is designed based on flow and retention time. They are typically used when greater contact time and mixing are required to effectively mix the chemistry. The systems are custom designed to match the flow requirement of the DAF and are offered in A-36 carbon, 304 or 316 stainless steel. Mixers and chemical pumps are supplied as standard.
Proudly manufactured and assembled in the U.S.A.
DAF Product Features
Our systems each come standard with features that improve efficiency and make them easier to use. These include:
- Construction in A-36 carbon, 304 or 316 stainless steel, welds are dye penetrant tested.
- Compact design saves floor space.
- Variable speed flight and chain skimmer design that allows for the driest float cake possible.
- Adjustable effluent weir disc for easy adjustment of water level.
- Highly efficient air system produces dissolved air without the need for a dedicated air supply.
- Nema 4 and Nema 7 control packages available.
- Operator friendly design.
Our Sales, Engineering, and Service teams have many years of experience working with and servicing DAF as well as other types of clarifiers.
M.W. Watermark will also continue to offer expert aftermarket support for similar types of DAF units.
About M.W. Watermark
M.W. Watermark wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference in the water business, and as a result, make a positive difference to our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. We also specialize in rebuilding used water treatment equipment. Together, we can make a difference.
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