H2FLOW DAF TECHNOLOGY
H2FLow's Dissolved Air Flotation (DAF) technology is a highly efficient treatment system designed to remove Total Suspended Solids (TSS), Fats Oils and Grease (FOGs), Insoluble Biological Oxygen Demand (BODi), and other contaminants from wastewater.
This advanced process is widely utilized across various industries, including municipal water and wastewater treatment, food and beverage plants, petrochemicals, electronics, pulp & paper, mining, and more.
Key Features and Benefits
High Efficiency: Capable of removing up to 95% of TSS and FOGs.
Compact Footprint: Requires less space compared to traditional sedimentation systems.
Flexibility: Can be tailored to various flow rates and types of contaminants.
Ease of Operation: Automated controls and user-friendly interfaces simplify operation and maintenance.
Cost-Effective: Reduces the amount of chemistry needed and minimizes sludge production, lowering overall treatment costs.
Markets Served
Municipal Wastewater
Transportation and Rail
Oil and Gas
Power Generation
Water Treatment
Mining
Recycling Facilities
Automotive
Food and Beverage
Electronics
Biogas
Sludge Thickeners
Principal of Operation
The core principle of DAF involves the introduction of air bubbles into the wastewater. These bubbles attach to the suspended particles, causing them to float to the surface. The floated materials are then skimmed off, resulting in cleaner effluent.
The key components and stages of the DAF process are:
Pressurization and Air/water saturation
Distribution of dissolved air
Flotaton
Skimming and sludge removal
Air is mixed with the effluent stream of water at a high pressure to create a high concentration air/water mixture
The pressurized air-water mixture is released into the flotation tank at atmospheric pressure, forming microbubbles that rapidly float to the surface. The mixture is injected at strategic locations to interact with the solids.
The Microbubbles attach to the suspended particles, causing them to rise to the surface, and form a sludge blanket.
The floated materials are skimmed off, while the clarified water is discharged from the center of the unit. Heavy materials, will settle at the bottom and will be combined with the surface sludge for discharge.
H2FLOW DAF MODELS
Alpha Series
The Alpha flotation units are designed to treat wastewater with high solids loading. The capacity of the Alpha units range from 22 usgpm to 800 usgpm (5 m3/hr up to 180m3/hr.
Gamma Series
The Gamma flotation units are designed to treat wastewater with light to medium solids loading and very high flows. The capacity of the Gamma units range from 990 usgpm to 2425 usgpm (225 to 600 m3/hr).
Delta Series
The Delta Series DAF systems use plate-pak technology to squeeze the highest possible surface area in the smallest footprint. Ideal for existing facilities where space is tight. Typical flow ranges vary from 22 gpm to 660gpm
PWL Series
The PWL flotation units are designed to treat wastewater with high flows and solids loading. The capacity of the PWL units range from 880 usgpm to 1150usgpm (200m3/hr up to 260m3/hr).
Sigma Series
The Sigma flotation unit is designed to treat wastewater with medium to high solids loading. The capacity of the Sigma units range from 2200 to 4400usgpm (500 to 1000 m3/hr).
SPC Series
The SPC flotation unit is designed to treat wastewater with light to medium solids loading. The capacity of the SPC its range from 70 to 11000usgpm (16 to 2500 m3/hr)
DAF RENTAL UNITS
H2Flow’s DAF rental units provide a flexible, turnkey solution for temporary or emergency wastewater treatment needs. Available in outdoor heated containers or skid-mounted packages, they require only electrical connections and inlet/outlet hookups for rapid deployment. Additional rental options include screens, pumps, tanks, and dewatering equipment, giving you a complete, ready-to-use treatment system.
Containerized DAF Systems
H2Flow’s containerized DAF systems are fully equipped for outdoor operation, with heating and ventilation for all-season performance. Each unit comes complete with controls and chemical feed equipment and can treat up to 10 m³/hr. Designed for flexibility, they can be installed in remote locations with ease.
Skid Mounted DAF Systems
H2Flow’s skid-mounted systems come as a complete, ready-to-go package, minimizing installation time. Simply place the unit on a factory floor, connect utilities, and begin treatment immediately. Each system includes controls and can handle flows of up to 15 m³/hr.
ADDITIONAL DAF EQUIPMENT
Sludge & Equalization Tanks
Sludge tanks provide storage to allow for scheduled removal, while equalization tanks help manage process spikes, ensuring consistent and reliable treatment.
Recirculation Pumps
Recirculation pump drive the system, producing the microbubbles that lift solids in combination with the saturation tank and air distribution system, keeping the DAF performing efficiently. Without it, solids would simply settle.
Sludge Dewatering
Sludge dewatering significantly reduces the water content of solids, cutting their volume by 70% or more. This not only streamlines handling and storage but also lowers costs by reducing the frequency and expense of sludge haulage. Efficient dewatering keeps your wastewater operations more economical and sustainable.
Control & Automation
The PLC panel is the brain of the DAF system, managing the recirculation pump, air feed, skimmer drive, chemical dosing, automated valves, and more. Its configurable settings allow operators to optimize system performance, while optional remote access provides convenient monitoring and control from anywhere.
Sludge Handling Pumps
DAF sludge handling pumps are designed to efficiently transfer and manage the thickened solids produced in the flotation process. Built for reliability and durability, they handle abrasive and viscous sludge with ease, helping maintain smooth operation and reducing maintenance in wastewater treatment systems.
Pipe Flocculators
Pipe flocculators use hydraulic power to mix chemicals inline before wastewater enters the DAF. They control pH, add coagulants, and provide gentle polymer mixing to preserve floc formation, all while eliminating the need for multiple tanks and mixers. Efficient, compact, and reliable, they streamline chemical treatment in modern wastewater systems.