CFU Compact Dissolved Air Flotation: Completing in 90 Seconds What Conventional Flotation Takes 15 Minutes
At a GlanceCFU
CFU(Compact Flotation Unit) compact dissolved air flotation, a patented technology of Shenzhen SINOKLE Technology Co., Ltd., is a new-generation, high-efficiency, compact, enclosed, pressurized dissolved air flotation unit. By introducing swirl flow into flotation, it uses centrifugal force to increase the collision probability between bubbles and oil droplets and accelerate flotation, achieving faster and more complete oil removal.
Why Is It Faster?
Conventional flotation relies on bubbles to naturally carry oil droplets upward; collision efficiency is limited, so the water must dwell in the tank for10~15minutes.CFUThe system makes the wastewater rotate at high speed inside the unit: the centrifugal force generated by the swirl drives oil droplets and suspended solids""toward the bubbles, greatly increasing the collision probability and accelerating the flotation rate, compressing the residence time to within90seconds, while single-stage oil removal efficiency can reach over80%.
Key Figures
Maximum treatment capacity of approximately500 m³/h; single-stage oil removal efficiency>80%,SSremoval rate>70%; inlet can tolerate oil content up to1000 ppm,SS 200 ppm; applicable medium temperature<80°C; gas medium can be air, argon, natural gas, etc., adapting to different site conditions.
Comparison with Conventional Flotation
Comparison Item | Conventional Flotation | CFUSwirl Flotation |
Residence Time | 10~15min | <90s |
Oil Removal Efficiency(Single Stage) | 60%~80% | >80% |
Suspended Solids Removal Rate(Single Stage) | 50%~70% | >70% |
Removable Particle Size(>80%) | >10μm | >5μm |
Footprint | Large area, heavy weight | Only 1/5 of1/5 |
Automation | Manual or semi-automatic | Fully automatic |
Sludge/Oil Discharge | Mechanical | Pressure oil and sludge discharge |
Safety & Environment | Atmospheric pressure, risk of gas leakage | Enclosed and pressurized, environmentally friendly |
Eight Major Advantages
High oil removal efficiency: single stage>80%, far exceeding conventional equipment; compact structure: footprint reduced by80%; skid-mounted design: short construction period, ready to use upon installation; stable performance: strong shock resistance, no moving parts; low operating cost: automated control, easy maintenance; safe and environmentally friendly: enclosed and pressurized, no gas leakage risk; proprietary patent: core patented technology; fully automatic operation: efficient unattended operation. Among these,"no moving parts+pressure oil and sludge discharge"directly eliminates wear parts such as traditional scum scrapers, greatly reducing maintenance workload.
Case in Point
Tuha Oilfield produced water treatment project: adoptedCFUswirl flotation technology to efficiently remove oil and suspended solids from oily wastewater, with effluent indicators better than discharge standards. In engineering terms,CFUenclosed pressurized operation is safe and environmentally friendly, skid-mounted design enables easy installation, and fully automatic operation reduces O&M costs.
SINOKLE's swirl flotation technology family (CDFU/CFUseries) has been deployed in multiple projects worldwide: Congo oilfield wastewater comprehensive treatment phase II (250 m³/h,2026), PetroChina Sichuan Petrochemical crude oil storage tank farm (50 m³/h,2026), Yunnan Petrochemical electric desalting drainage oil removal skid (105 m³/h,2025), Urumqi Petrochemical electric desalting wastewater and tank farm black water (150 m³/h,2023), Bohai offshore platform produced water (3 m³/h,2018), etc., covering onshore oilfields, refineries, and offshore platforms, with scales ranging from single digits to several hundredm³/h.
Who Is It For?
Oily wastewater treatment in petrochemical, refining, oilfield, and other fields, especially suitable for space-constrained retrofit projects, skid-mounted projects pursuing rapid commissioning, and sites with high safety and automation requirements.
Conclusion
90seconds to complete what conventional15minutes of work, with only one-fifth the footprint, and safer and more worry-free——CFUcompact dissolved air flotation is the efficiency choice for oily wastewater treatment.
