The Aire-O2® Microfloat’s immediate impact was a $100/day chemical savings


A southern USA red meat processor’s wastewater treatment was getting more complex and expensive but still did not yield the expected results. Regulations were getting stricter and stricter as well. The processor was spending $192 USD per day on ferric chloride to promote coagulation and settling but was still not satisfied with the results. The company decided to look at the Aire-O2® Microfloat Dispersed Air Flotation System that is specifically designed for physical/chemical pretreatment of wastewater. The Microfloat’s removal of FOG before biological wastewater treatment greatly reduces the load for conventional facilities.


The meat processor installed two 7.5 hp (5.5 kW) Aire-O2 Microfloat Dispersed Air Flotation units as a retrofit into existing tankage. The specially designed propeller disc on the Aire-O2® aerator’s shaft produces extremely fine bubbles, transferring 10 to 50 micron air bubbles into the water through special ejectors. The extremely fine bubbles attach to solid particles in the liquid and float these solids to the surface of the tank for easy removal by solids handling equipment. The immediate impact was conservatively saving more than US $100 per day on ferric chloride costs and increased production of more desirable float as rendering product. Removal rates exceeded 80 percent.


The red meat processor had been paying to dispose of the float. But, with the production of more desirable float, the processor sold it as product. Additional benefits were reduced odors. Moisture levels in recovered materials were reduced which, in turn, reduces cook time for the float. Completely satisfied with the Aire-O2 Microfloat’s performance, the meat processor installed two more additional units shortly thereafter. All of the equipment has been running almost maintenance free for years, even in this harsh environment.