Description
Equipment Overview
The Pan America DAF-25-V is a complete, industrial-scale dissolved air flotation system engineered for high-efficiency removal of suspended solids, oils, and greases. Designed for a maximum flow of 75 GPM (inclusive of recycle flow), it features a V-bottom sludge hopper, mechanical skimmer, and integrated RSS-5 recycle saturation system skid. It is ideal for wastewater clarification in metalworking, food processing, and manufacturing environments.
Key Features and Specifications
DAF Core Tank and Structure:
– Model: DAF-25-V (V-bottom configuration with auger)
– Max Rated Flow: 75 GPM (including recycle loop)
– Tank Construction: A36 carbon steel (coated for chemical and corrosion resistance)
– Interior Coating: Self-priming coal tar epoxy, 18–22 mils dry film thickness (DFT)
– Exterior Coating: Industrial-grade polyurethane enamel, 6 mils DFT
– Welds: Double welded and dye penetrant tested
– Tank Shape: Rectangular with V-bottom for enhanced sludge consolidation
– Float Hopper Volume: 20 gallons
– Sludge Volume: 275 gallons
– System Footprint: ~11 ft x 8 ft (tank + RSS skid)
Mechanical Components:
– Surface Skimmer: Mechanical chain and flight system
– Flights: 304 stainless steel construction with neoprene/Buna-N wipers
– Chain Type: Acetal polymer with Acetal sprockets and guides
– Wear Components: UHMWPE wear bars
– Drive System: Variable-speed motor with VFD control (mounted on NEMA 4 panel)
– Sludge Auger: Stainless steel shaft with coated steel screw and gear motor drive (230/460V 3-phase)
– Auger Reach: Full tank length coverage with drive system installed on discharge end
– Water Weir: Adjustable 304 stainless steel weir plate with fine leveling control
Recycle Saturation System (RSS-5 Skid):
– Pump: High-head centrifugal, 100 psi rating, TEFC motor
– Pump Seal: Mechanical water-flush seal, reservoir-fed with visual sight glass
– Vessel: 304 stainless steel vertical saturation tank (12″ diameter)
– Air Components: Filter/regulator, rotameter with needle valve, check valve, pressure relief valve, solenoid valve
– EQ Logic: Auto-Q™ control logic with switch sight glass, float switch level control
– Mixing: Inline injection chamber mounted near DAF influent inlet
– Air Requirement: 105 psi @ ~10 CFM (typical)
– Recycle Flow Capacity: 3–40 GPM for this system variant
Control System and Electrical:
– Main Panel: NEMA 4 rated, weather-resistant
– Integrated Control: Skimmer timer, float pump, sludge auger, recycle pump
– Power Requirement: 480V, 3-phase, 60 Hz, 20 Amps
– Auger Drive: Wired through MCP with on/off selector
– Float and Sludge Pump Controls: HOA switches, level-activated logic
– Air Logic: Includes automatic air valve sequencing and visual pressure gauges
Connections and Ports:
– Influent Inlet: 4” flange
– Effluent Outlet: 3” NPT coupling
– Sludge Discharge: (2) 3” FNPT bottom drain ports
– Float Outlet (Skimmings): 1” FNPT
– Air Inlet to RSS: 1/4” NPT female
– RSS Water Flush Fill: Manual fill via top-mounted tee with sight tube
