Application of the CDFU Cyclonic Dissolved Air Flotation Unit in Wastewater Treatment
CDFU (Cyclonic Dissolved Gas Flotation Unit) is an innovative technology for oily wastewater treatment, featuring high efficiency, environmental friendliness and compactness, demonstrating significant application value in industrial wastewater treatment. The following is a detailed analysis of this technology:
Technology Overview: The
CDFU is a patented technology independently developed by SINOKLE Technology. It integrates cyclonic centrifugal separation, ultrafine bubble generation and dissolved air flotation; through the organic combination of these technologies, it achieves efficient and rapid separation of oil, emulsified oil and suspended solids from wastewater. Its core working principle is to use the centrifugal force generated by the cyclone, combined with the adhesion of ultrafine bubbles (average diameter about 25 um) to pollutant particles, to form buoyant bodies lighter than water that rise to the water surface by buoyancy and are removed as scum, thereby achieving oil-water separation and suspended solids removal.
CDFUProcess flow diagram
Technical features
High-efficiency separation:
The oil removal rate exceeds 90%, and the suspended solids (SS) removal rate exceeds 85%.
A single unit can treat up to 500 m3/h, with a low system pressure drop (0.05 MPa or less) and high treatment efficiency.
The cyclonic technology increases the collision probability between bubbles and oil droplets and the flotation rate, improving separation efficiency.
Green and environmentally friendly:
It adopts a purely physical demulsification method without adding chemicals, avoiding the production of oily sludge and reducing secondary pollution risk.
The technology conforms to current environmental trends and is suitable for difficult industrial wastewater treatment such as petrochemical and coking wastewater.
Compact design:
The skid-mounted design occupies only 1/3 of the footprint of conventional flotation equipment, is easy to install, has a short construction period, and can be quickly put into use.
The equipment operates enclosed and pressurized, reducing volatile organic compound (VOC) emissions and offering higher safety.
Automation and intelligence:
It supports automatic operation and remote expert service, reducing labor costs and improving operational stability.
Multi-technology integration:
Combining cyclonic, coalescence, demulsification and microbubble generation technologies, it can handle complex oily wastewater and emulsified oil with strong adaptability.
Application scenarios: the
CDFU technology is widely used in petrochemical, coking, electric desalting and other difficult industrial wastewater treatment scenarios. In electric desalting wastewater treatment, the CDFUCDFU is combined with the high-efficiency coalescing oil remover to further improve oil-water separation.
Technical advantages and innovations
Combination of cyclone and flotation: the centrifugal force generated by the cyclone enhances the contact efficiency between bubbles and pollutants. Compared with conventional flotation technology, the CDFUCDFU has clear advantages in treatment speed and efficiency.
Ultrafine bubble technology: the small particle size and high dispersion of the microbubbles enable effective adhesion to fine oil droplets and suspended solids, improving separation performance.
Modular design: the skid-mounted design not only saves space but also facilitates transportation and rapid on-site installation, suitable for a variety of industrial scenarios.
No chemicals: it avoids the sludge disposal problems brought by traditional chemical treatment methods, reducing operating costs and environmental risks.
Comparison with other technologies
Compared with conventional flotation equipment (such as parallel-flow flotation or dissolved air flotation), the CDFUCDFU offers the following advantages:
Small footprint: conventional flotation equipment usually requires a large space, while the CDFUCDFU compact design is more suitable for space-constrained industrial scenarios.
High treatment efficiency: the introduction of cyclonic technology significantly improves the collision efficiency between bubbles and pollutants and shortens the treatment time.
Environmentally friendly: the absence of chemicals reduces secondary pollution, in line with the direction of green environmental protection.
Actual cases and market feedback
Urumqi Petrochemical Project: the CDFUCDFU 's successful application in coking black water treatment proves its reliability in difficult wastewater treatment; the treated water met the standards, demonstrating the maturity of the technology.
Summary
SINOKLE Technology's CDFU cyclonic dissolved air flotation technology is an advanced wastewater treatment technology integrating high efficiency, environmental friendliness and compactness, especially suitable for the treatment of oily wastewater and difficult industrial wastewater. Through the synergy of cyclone, ultrafine bubbles and dissolved air flotation, it significantly improves pollutant removal efficiency while meeting environmental needs in a green, chemical-free way. Despite possible challenges of initial cost and complex wastewater treatment combinations, its compact design, efficient separation and successful cases show broad application prospects.
