Dissolved Air Flotation (DAF)

DAF Water Treatment Systems

Special Offer!

Nx²JEM DAF – Model AS-15

This unit comes skid mounted and fully integrated with installed color touch-screen controls, solids pump and pipe flocculator ready-to-go.  The optional EQ/pH pre-treatment skid and SSI internally fed screen are available to complete the package.

To learn more about this unit, or to inquire about pricing, don’t hesitate to contact us. A PEWE representative will be readily available to assist you.

The Right Dissolved Air Flotation System

In the world of wastewater treatment, DAF water treatment systems are proving to be the most popular method for removing insoluble solids and clarifying the water. These DAF systems are very versatile in that they can be utilized in many different applications. Many different industries use this separation technology for clarification of wastewater. PEWE DAF water treatment systems are optimally designed to remove three main types of contaminants found in both industrial and municipal waste streams. These insoluble organic contaminants are total suspended solids (TSS), biochemical oxygen demand (BOD), and fats, oils, and greases (FOG). They can also be applied to inorganic constituent removal as well.

PEWE Industrial clients utilize our DAF technology to remove TSS, BOD and FOG as a pretreatment step in order to meet permit discharge limits prior to discharge to a municipal POTW. PEWE Municipal clients use our DAF technology primarily for biological suspended solids removal. For both industrial and municipal clients, making the right decision started with selecting a PEWE DAF for their wastewater treatment. The result is efficient liquid/solid separation and clean clarified water.

How PEWE DAF Systems Work

As the name suggests, PEWE DAF water treatment systems work by injecting dissolved air into a wastewater recycle stream. The notable distinction of this product is its reliability and efficacy. This is accomplished with minimal maintenance requirements, which sets PEWE apart from its competitors. PEWE DAF systems utilize the efficient Rogue regenerative turbine aeration pump to form 20-30 micron air bubbles. Compressed air is not necessary; Instead, the pump will aspirate and pressurize atmospheric air generating “whitewater” throughout the clarified wastewater in the DAF. This process generates energy saving results. No gas tank, no air compressor, no multi tube, and always fouled air octopus!

The PEWE DAF aeration manifold ensures complete “whitewater” saturation of the entire wastewater stream. Micro-bubbles attach to the insoluble contaminants (TSS, BOD and FOG) in the wastewater and together they rise to the surface of the DAF and form a floating bed of material or sludge solids. A surface skimmer periodically removes this conglomeration of material or sludge and sweeps it into an internal hopper for further processing.

PEWE DAF System Advantages

Clients benefit with many advantages using PEWE DAF wastewater treatment systems. All PEWE DAF models feature:

  1. Integrated pipe flocculators for effective chemical addition.
  2. Energy efficient regenerative turbine “whitewater” aeration.
  3. Advanced influent stilling well ensuring laminar flow conditions.
  4. Safety recessed variable speed direct drive change & flight for the driest skimmer sludge solids.
  5. Non-clogging air diaphragm pump sludge solids removal.
  6. Enhanced anti-flex take-up frames.
  7. US Patented self-cleaning weir water management.

PEWE DAF water treatment systems yield superior bulk solids removal over traditional, gravity, or other competing wastewater clarification systems. Our systems capture insoluble TSS, BOD, and FOG solids before effectively removing them with the minimum energy required. The efficiency of a PEWE DAF system means a smaller carbon footprint, making it more environmentally friendly.

PEWE DAF & Innovative Quality

PEWE has specialized in manufacturing premium Dissolved Air Flotation equipment since entering the water treatment marketplace back in 2007. We hold US Patents #8431022 and #9962631 for the design of our DAF water treatment equipment, as well as 21 registered trademarks. PEWE is proud to offer our clients the largest array of Dissolved Air Flotation systems on the market today. PEWE products and systems are designed in-house and produced under tight quality control.

PEWE offers products worldwide to the food, petrochemical, pharma, metal, electronic, and other industries along with the municipal market. If you’d like to learn more about our selection of DAF water treatment systems, our other wastewater equipment, or discuss your particular water treatment needs, contact us. One of our experienced team members will be happy to help you.

PEWE Aeration Technology

The heart of the PEWE DAF’s aeration technology is the ROGUE MAX RGT® pump. The regenerative turbine design creates the specific conditions needed for dissolving air efficiently. Coupled with the PEWE DAF, this super air saturated water releases uniform 20-30 micron bubbles into the flotation system and effectively floats fine suspended solids.