Dissolved Air Flotation
Dissolved Air Flotation (DAF) is a method of removing contaminants from a waste water stream. The process is particularly effective for en-trained FOG (fat oil & grease). DAF units inject dissolved air into a chemically reacted waste stream causing micro bubbles to adhere to solids. Once the solids are attached to the micro bubbles they gain buoyancy and float to the top of the DAF unit where a mechanical rake removes them.
DAF units are a core competency of Blue Sphere. The Blue Sphere DAF is a rugged, practical design. The selection of each component has been distilled though years of system design, start-up and operation in many diverse industries. DAF units are available from 30gpm up to 1000gpm and larger to meet the needs of any waste water treatment plant.
Every single sub-component is chosen from an operational ease of use and service life stand point. From the chain selection to the whitewater pump to the shell design, the DAF unit has been crafted around the Operator and that persons need to produce a result every day. It is designed for quick system cleaning and with minimum moving parts. The highest quality, yet simple electrical control systems are integrated to provide service in harsh environments.
You will not find any brittle plastic chains, leaky bottom augers, twisted off switches, bursting tubes, clogging internal media or magic black box whitewater canisters here. We have seen it all, and engineered out the junk.
Elegant in its simplicity. The Blue Sphere DAF is superior to other alternatives on the market.
Dissolved Air Flotation Unit Features:
Solid 304 stainless steel construction
Slanted bottom and for easy cleanup
Unique effluent weir and level adjustment design
Heavy gauge stainless chain and sprocket sludge rake
Whitewater distribution, air controls and control panel on work platform
Integrated sludge hopper
Threaded weirs for simple water level adjustment
High air to solids ratio using Air-Whip pump
2.5 gpm per square foot surface area flotation cell
Distilled over years of installation, start-up and operation.
Will It Work For Me?
Industries Effectively Served by Dissolved Air Flotation:
Hydro-Frac Flow Back Water
ISO Container Wash Water
Municipal Wastewater Sludge Conditioning
Plastic Recycling Wash Water
Pulp & Paper
Rail Car Wash Water
Tanker Cleaning Wastewater
Textile Dyeing and Finishing
Third Party Water Treaters
Contaminant Removal Capabilities
Dissolved Air Flotation is additionally effective for Ammonia Nitrogen, Phosphorus, Metals and Phenol reduction.
Values are typical and may not reflect the performance of this technology on all waste streams. Values are typically achieved in conjunction with an effective physical chemical program.
Selecting appropriate solids removal equipment for a waste water treatment application is a precise and challenging task. Blue Sphere can assist your operation in every aspect of the process. From permitting, system process design, installation, startup and further training, Blue Sphere can help insure compliance and performance.
If you have an existing DAF system, Blue Sphere can repair, retrofit or upgrade equipment. Common upgrades include new white water pump systems and sludge rake repairs. Modern, customized control panels and system analysis equipment can be integrated with legacy units to help you meet compliance with minimum capital expanse.
White Water System
At the core of practical, effective, Dissolved Air Flotation is the system “whitewater” pump. This is the method by which a DAF dissolves the air into the waste stream. Blue Sphere units utilize the AIR WHIP whitewater pump. This is a high speed, open impeller, close coupled pump. Compressed air is injected directly into the pump housing, where mechanical action sheers the air volume and dissolves the gas into the water under pressure in a single step.
There are other whitewater pumps on the market that can produce a similar effect. However, there is not another pump on the market that can do so with the simplicity and low maintenance requirements of the AIRWHIP.