QDEVU® Industrial Wastewater Treatment Dissolved Air Flotation Machine

QDEVU Air Flotation System can effectively remove the light flocs, flocculated colloidal substances, oil substances, etc. that are difficult to precipitate in wastewater,achieve the purpose of solid-liquid separation.

QDEVU Dissolved Air Flotation (DAF) System is a process to remove grease, oil and other fine suspended matter, reduce COD BOD,TSS to achieve maximum treatment efficiency in a compact footprint. It is able to remove a variety of contaminants to meet trade waste or reuse requirements. Each system is sized based on the hydraulic loading rate, Total Suspended Solids (TSS) and Fats, Oil and Greases (FOG) levels.

The DAF separates the suspended solids and lighter liquid contaminants (eg FOG and hydrocarbons) from the water by moving them to the surface of the DAF vessel and then scraping them off the surface. A pressurised stream of airsaturated water is mixed with the flocculated water and with the release of pressure, a cloud of very fine air bubbles carries the suspended solids and lighter liquids to the tank surface. Clean water overflows from the DAF tank, via an under/over-weir to sewer or to the next stage of the treatment process. The overflow level is adjustable and controls the level in the DAF flotation section. The sludge on the surface of the DAF is scraped into a sludge hopper by a mechanical scraper. The DAF system is automated via a programmable logic controller (PLC) mounted within a control cabinet on the system.

ADVANTAGE

• Total suspended solids (TSS) reduction up to 97%
• Chemical oxygen demand (COD) removal up to 85%
• Low-cost operation and maintenance
• Standard and customized units meet a variety of application and flow ranges
• Designed for ease of installation and use
• Suitable for high-salinity water

APPLICATION

Dissolved air flotation design is instrumental in effective water treatment. This process is also widely used in several industries and sectors, including but not limited to:  

• Purify landscape and river water,separate the tiny suspended matter, alga and microscale of the flocs
• Drinking water pretreatment
• Deep treatment of waste water,separate the microscale of the flocs
• Petrochemical wastewater,Oil Recovery water,Biodiesel and Kitchen Wastewater,separate the oil and grease from waste water containing oil
• Better quality of treated water,replace the secondary settling tank
• Other industry waste water treatment,such as Breeding, slaughtering, spraying, electroplating, chemical pharmaceutical, paper making, printing and dyeing, tanning,fermentation, food and etc.

CONTACT US FOR MORE DETAILS ABOUT WASTEWATER TREATMENT SOLUTION.

If you have specific requirements, contact us about our custom air flotation system.