Dissolved Air Flotation Units
Oil, grease, and suspended solids must often be removed from wastewater prior to its use, or reuse, in industrial processes and prior to sanitary sewer or stream discharge. Several methods are presently in use for removal of both oil/grease and suspended solids from wastewater; API oil separators, ultrafiltration, and dissolved air flotation (DAF) are commonly encountered processes. DAF is the process of choice for use in many applications, such as treatment of rail tank car wash water, where oil/grease and suspended solids loading is heavy, easy recovery from upsets is important, and the ability to handle both free and dissolved (emulsified) oil/grease is needed.
Solution
ProChemTech is now manufacturing a line of DAF units with rated flows from 5 gpm to 100 gpm. Unit design is based on our 20 years of wastewater treatment system operating experience and use of recently published research into air dissolution design. Unique features of our units include use of a scientifically designed air dissolution subsystem, easy to regulate recirculation loop water controls, pyramid shape sludge hoppers, adjustable V notch effluent weirs, and no moving parts located below the water line.
ProChemTech DAF units are of modular welded steel construction, sand blasted and coated with coal tar epoxy on all wetted surfaces to control corrosion. Exterior surfaces are sand blasted, primed, and coated with industrial enamel. Chemical mix tanks and the air dissolution subsystem are supplied as separate steel skid mounted units.
ProChem Tech, 5 Grist Mill, Medford, NJ 08055. Tel: 609-654-2097; Fax: 609-714-9462.