Venturi Aeration, Inc.

Venturi DAF-Effect Oil, Grease, and Solids Skimmer

Venturi Aeration, Inc. through its affiliate HydroQuip, Inc. manufactures a high efficiency Venturi DAF-Effect (Air Flotation) system for separating oils, grease and suspended solids without the use of expensive polymers.

Air flotation technology is a proven, reliable method for removing oil & grease (O&G) and suspended solids (TSS) from wastewater or contaminated groundwater. It is the process of using micro-sized bubbles of air to enhance the natural buoyancy of substances with low specific gravities to float them to the surface of the skimmer tank. Based on the specific gravity a know rise time can be computed to determine removal efficiency. Once liquids enter the skimmer section of the tank the O&G and floatable TSS can be effectively removed with a unique slimmer blade that ever so gently skims the surface of the quiescent tank.

Unlike other DAF systems which require polymers that increase treatment costs, diffusers that be prone to fouling with biofilm or from oil & grease, and noise from a compressor or blower. The venturi aerator DAF effect technology is totally external to the tank and uses a high efficiency water quality pump to accelerate the liquids through the venturi which causes a natural vacuum to aspirate ambient air into the wastewater. The air is intimately commingled with the wastewater entraining micro bubbles that are discharged into Venturi Aeration, Inc.’s unique stilling well design, allowing the liquids to be forced out the bottom of the tank. In doing so, not only are micro bubbles attached to oil & grease to cause them to float, but oxygen is transferred which can aid in biological reduction of BOD (biochemical oxygen demand). The Venturi DAF-Effect Oil Skimmer can also be used effectively for oil and grease with specific gravities >0.90.

The Venturi Aerator DAF Effect Oil Skimmer units are made from Stainless Steel components and can be equipment with standard ODP motors or EP (explosion proof) motors depending on their application and the environment. Units can be built in different sizes with different flow rates specific to a project’s requirements. HydroQuip, Inc. (North Attleboro, MA) has a license to manufacture and market the Venturi DAF-Effect Oil Skimmers for environmental and process applications. HydroQuip, Inc. can be reached at 508-695-3640.