Heron Innovators

Liquid/solid separation solutions for the cheese processing industry - Food and Beverage

Specializing in state-of-the-art wastewater treatment systems, at Heron Innovators, we provided a California-based customer with our advanced Suspended Air Flotation (SAF) system technology for their new cheese processing plant. Customized SAF systems remove suspended solids from wastewater with a high capture percentage and high hydraulic and solids loading rates. The SAF system installation was custom fabricated from type 304 stainless steel, and featured a Model F25 froth generator, Model CF125 ClearFloater™ flotation tank, a polyethylene conditioning tank with a circulation / mixing pump, and a polyethylene solids holding tank. The maximum height for the tallest piece in the multi-unit system is 9 ft. The completed SAF system has a flow rate capability of 260 gpm. This system is providing remarkable solid/liquid separation results. Data showed reduction of TSS by 98% and of BOD by 30% to 50%.

Product Name
Model SAF125 Suspended Air® Flotation (SAF®) Treatment System
Product Description
Model SAF125 Suspended Air® Flotation System. This SAF® system is used to treat cheese processing wastewater.
System Capabilities and Services Provided
  • Engineering design of process and components
  • AutoCAD drawings
  • In-house fabrication of mechanical and electrical equipment
  • Custom fabricated welded stainless steel tanks and components
  • Laboratory services supporting treatability study and proof of concept determinations
  • Turn-key installation
  • Start-up support
  • Operations and maintenance manual
Overall Part Dimensions
Model F25 Froth Generator: 40 in. W x 49 in. L x 78 in. H
Model CF125 ClearFloater™: 7 in. W x 9 ft. L x 9 ft. H
Conditioning Tank: 6 ft. Dia. x 9 ft. H, 1,800 gal. capacity
Solids Holding Tank: 10 f. Dia. x 14 ft. H, 7,600 gal. capacity
PM-300 Poly Mixer/Aging System: 2 ft. Dia. x 3 ft. H
Chemical Staging Platform: 6 ft. L x 2 ft. W
Corrosive Chemical Staging Platform: 6 ft. L x 2 ft. W
Tightest Tolerances
+/- 1/16 inch
Material Used
Froth generator and ClearFloater™ flotation tank: 304 stainless steel
Conditioning and solids holding tanks: polyethylene
Additional Facts
Sole Source Procurement for new plant
Flow rate treated: 250 gpm
System Capability: 260 gpm
  • System feed pump.
  • Model F25 froth generator and metering pump
  • Model CF125 ClearFloater flotation tank with agitated flocculation chamber, chain and flight skimmer, and observation decking
  • 1,800 gal. Polyethylene conditioning tank with recirculation pump
  • Polyethylene solids storage tank and solids pump
  • Polymer mixing/aging system and metering pump
  • Magnetic flow meter
  • Day tanks to store polymer, coagulant, and frothing agent
  • pH Controller w/acid and caustic PID Loops
In process testing/inspection performed
Bench Testing for chemical dosage
Operating since 2011 – 98% TSS reduction and 30 to 50% BOD reduction; loading rates up to 15gpm/ft2 / not including recirculation water.
Industry for Use
Dairy Products
Delivery/Turnaround Time
16 weeks
Delivery Location
Modesto, California
Standards Met
Customer Specifications, 2D CAD Drawing