The DAF Series Dissolved Air Flotation systems are designed to remove petroleum products, FOG, TSS, BOD, COD and other contaminants in a wide variety of industries & applications.
Description Dissolved Air Flotation – DAF Oil Water Separators
The discharge water from the effluent end of the DAF tank is supersaturated with air as part of the DAF process. The waste stream is then combined with the supersaturated water stream. Millions of tiny bubbles form when the saturated stream loses pressure. These bubbles cling to the pollutants in the wastewater, altering their buoyancy and causing them to float to the water’s surface where they may be skimmed and extracted.
The DAF design incorporates today’s ‘state of the art’ technology in DAF design. This design simplifies the DAF process, and requires less startup time, less capital cost, instrumentation, labor and maintenance. The design is process friendly, providing virtually instant saturation upon system startup without equalization and complex startup procedures. Higher air transfer efficiencies are also realized due to higher saturation pressures with 12% @ 93% entrainment. We can provide both styles of DAF design depending on application and customer preferences.
Chemical pretreatment often improves DAF solids removal efficiencies. The use of chemical flocculants with DAF is based on system efficiency, application (use of DAF) contaminant characteristics and cost. Commonly used chemicals include trivalent metallic salts of iron, such as FeC12 or FeSO4 or aluminum, such as AISO4. Organic and inorganic polymers (cationic or anionic) are often used to enhance the flotation process. The most commonly used inorganic polymers are the polyacrylamides.
OPTIONS
- 304/316 Stainless Construction
- Emulsion Breaking System
- Chemical Pretreatment
- Sludge Pumpout
- Float Pumpout
- Effluent Pumpout
- Influent Feed
- pH Adjustment System
- Effluent Filtration System
- Vapor Cover
- Alternate Wiper Materials
- Walkways/Stairs
- Flow Meter
- Flatbottom Designs
Applications
- Frac water remediation
- Tank truck tank wash
- Refinery wastestream
- Biodiesel process water
- Drinking water pretreatment
- Pet food plant process water
- Beef, fish, foul, pork processing
- Rendering plant wastewater
- Food processing plant water
- Algae removal
- Industrial process water
- Bilge water treatment
- Bakery wastewater
- Military wash racks
- Steel mills
Standard Features
- A36 or 304 or 316 SS construction
- Adjustable water weir
- Integral float reservoir
- Influent diffuser
- Effluent chamber
- Recycle saturation system
- NPT/flanged fittings
- Surface drag skimmer
- V-hopper Bottom, sludge auger
- Lifting lugs
- NEMA 4 controls
Source: www.skimoil.com
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