IAF/IGF Induced air/gas flotation- Charged micro bubbles for enhanced removal of suspended solids in wastewater applications


For over a century, various forms of Dissolved Air Flotation (DAF) systems have been employed for the removal of suspended solids, and fats, oils, and grease from wastewater. The amount of air that can be dissolved in DAF systems is limited by the laws of physics and is usually less than 2 – 4% air by volume. The recirculated “whitewater” is drawn and created from underflow of flotation units, requiring high horsepower compressors and pumps that often require frequent maintenance and operator attention.

DAF with micro bubble generator installation

Charged micro-bubble flotation, replaces conventional whitewater systems. Instead of dissolving air, micro bubble generates whitewater (froth) at atmospheric pressure that is 40% air by volume. This froth consists of micro bubbles, approximately 50um, and created with a charged surfactant that is ubiquitous to wastewater. The charged micro-bubble froth is injected into the influent stream and has an electrostatic affinity to grab and lift solids to the flotation vessel surface for skimming and removal.

New systems are a fraction of the size of conventional DAF units, saving floor space and capital costs. Furthermore, because micro bubbles have a much longer life than DAF bubbles, a very stable solids blanket is produced, allowing for increased surface dwell time to enhance dewatering, thereby reducing disposal costs.


• Super Saturation Oxygen Enrichment

• Stable Dissolve Oxygen Levels

• Warm Water Growth Enhancement

• Improved Root Development

• Reduced Fungal Infections

• Increased Plant Vigor & Growth

• Reduced Tip Burn

• Superior Nitrification

• Increased Yields & Profits FEATURES

• Superior Oxygen Transfer Efficiency

• No Moving Parts

• Passes Solids up to 12 mm

• Self-Cleaning

• Flexible Air Input

• Adjustable Air-to-Water Ratios

• Models from 25 to 600 gpm

• Low Energy Usage

• Pre-Packaged & Easy to Install

• Quiet Operation TECHNOLOGY