Proven in Practice: CDFU Cyclonic Dissolved Air Flotation in the Petrochemical Industry
SINOKLE's CDFU cyclonic dissolved air flotation technology not only leads in theory but has passed rigorous tests in real industrial service with outstanding results, especially in the demanding field of petrochemical oily wastewater.
Industry Challenges and Response
Petrochemical production generates oily wastewater with a complex composition and high pollutant concentrations — large amounts of oil, suspended solids and organics — which, if poorly treated, puts continuous pressure on the environment. Efficient, reliable pretreatment is the key to stable downstream operation and compliant discharge.
CDFU industrial application case
A large petrochemical enterprise, seeking to solve its oily wastewater problem, installed SINOKLE's CDFU cyclonic dissolved air flotation unit. The unit is designed for 200 m³/h and uses a plug-and-play skid-mounted design with a small footprint, a short site installation and commissioning period, and rapid start-up.
Remarkable purification results
Once commissioned, the results were immediate:
Oil concentration in the influent fell from several thousand mg/L to a stable level of a few tens of mg/L.
Suspended solids dropped sharply as well.
Key effluent quality indicators improved fundamentally and consistently met the specified discharge or downstream polishing standards.
Comprehensive value for the customer
This successful application not only proved the CDFU technology's efficiency and reliability under high-load, complex oily wastewater conditions, but also brought tangible economic and management benefits:
Cost savings: efficient physical separation cuts chemical consumption and sludge disposal costs.
Better management efficiency: a high degree of automation eases O&M and enables intelligent management.
Industry benchmark: the project's success has earned SINOKLE's CDFU units strong recognition in the petrochemical industry, making them the preferred choice for oily wastewater pretreatment at many companies.

CDFU application cases
SINOKLE's solid track record proves that its CDFU cyclonic dissolved air flotation technology is a powerful tool for industrial oily wastewater challenges, creating lasting value for customers' environmental compliance and sustainable development.