Charged microbubble flotation, specifically Suspended Air® Flotation from Heron Innovators, replaces conventional whitewater systems. Instead of dissolving air, SAF® generates whitewater (froth) at atmospheric pressure that is 40% air by volume. This froth consists of microbubbles, approximately 7 to 25 microns, and created with a charged surfactant that is ubiquitous to wastewater and GRAS approved. The charged microbubble 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 SAF® systems are a fraction of the size of conventional DAF units, saving floor space and capital costs. Furthermore, because SAF® 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.
White Papers & Downloads
Below is a list of items
A New Pretreatment Technology
Case Study: Suspended Air® Flotation
by Simmons Foods
SAF® Technical Overview
Looking for a quick overview of SAF®? Learn the important advantages & cost savings SAF® technology offers.
SAF® vs. DAF - Brewery Edition
See how SAF® performs vs. DAF in a standard brewery configuration.
Pleasant Valley State Prison
SAF® results from a municipal water district near Pleasant Valley State Prison.
Graton, CA Case Study
SAF® was brought in to achieve results that were otherwise impossible at a Graton, CA water treatment facility.
SAF® | Metcalf & Eddy
Read about Suspended Air® Flotation and why it is possible to treat a higher capacity, more efficiently, and with less operating cost.
TPO Magazine Article
Heron is featured in TPO Magazine.
SAF® Flow Diagrams
Flow diagrams show how SAF® fits into your treatment plan. We have diagrams for industrial and municipal configurations.