Dissolved Air Flotation (DAF)
Separation of suspended solids, floc, oil, and grease using microbubbles.
Dissolved Air Flotation (DAF) dissolves air into pressurized water to produce dissolved air water (DAW). When the pressure drops through a release device, microbubbles form and attach to floc, suspended solids, oil, grease, and fine particles. The contaminants then rise to the surface and are collected by a scum skimmer.
Product overview
Dissolved Air Flotation (DAF) dissolves air into pressurized water to produce dissolved air water (DAW). When the pressure drops through a release device, microbubbles form and attach to floc, suspended solids, oil, grease, and fine particles. The contaminants then rise to the surface and are collected by a scum skimmer.
Configuration and specifications are determined from process requirements and options confirmed by the principal.
Verified technical data
Information on this page is limited to confirmed data. Final capacity and performance are determined after application review.
Models and configurations
- Configuration is determined from wastewater characteristics and separation targets
- Separation method
- Flotation using microbubbles from dissolved air
- Removal targets
- Floc, suspended solids, oil, grease, and fine particles
- Air saturation
- Air is dissolved in pressurized water before release into the flotation tank
- Sludge removal
- Surface skimmer
- Controls
- Automatic configurations are available to suit process requirements
Standard scope
- Flotation tank, air saturation and release system, and skimmer according to configuration
Options and separate equipment
- Pretreatment, Polymer, and Polymer Preparation Unit
Features and scope
- Separates floc, suspended solids, oil, grease, and fine particles
- Microbubbles form through pressure release
- Compact design with a relatively small footprint
- Suitable for solid-liquid and oil-water separation
- Automation can be adapted to process requirements
- Straightforward system structure for operation and maintenance
Relevant applications
Data for consultation
- Wastewater flow rate and flow pattern
- Suspended solids, oil, and grease levels
- Water chemistry and jar-test or flotation-test results
- Outlet target, utilities, and installation space
Frequently asked questions
Related products
Polymer Preparation Unit (PAM Unit)
Polymer solution preparation system supporting consistent flocculation.
Rotary Drum Thickener
A thickening stage that increases sludge concentration before further dewatering.
Polymer
A consumable supporting floc formation in treatment and dewatering processes.
Technical consultation
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