New Oily Wastewater Treatment Process for Wastewater Treatment Plants with CDFU as Core Technology
Introduction
With the acceleration of industrialization, wastewater treatment has become a crucial aspect of environmental protection. Especially in industries such as petrochemicals and pharmaceuticals, the treatment of oily wastewater is of utmost importance. Traditional methods of treating oily wastewater suffer from issues like low efficiency, high costs, and susceptibility to secondary pollution. To address these challenges, a new process with CDFU (Cyclonic Dissolved Air Flotation Unit) as its core technology has emerged. This process, characterized by its high efficiency, environmental friendliness, and economy, is gradually replacing traditional methods and becoming a leading choice in the field of wastewater treatment.
Process Advantages
Primary CDFU Pure Physical Demulsification and Separation
The primary CDFU employs pure physical demulsification and separation technology, which can efficiently remove oil substances from wastewater without the addition of chemical agents. This method is not only stable and reliable but also boasts high oil removal efficiency. The separated oil can be recycled, avoiding the generation of secondary pollution. More importantly, this process does not produce oily sludge (hazardous waste), solving an environmental challenge while also creating economic benefits.
Secondary CDFU with Minimal Chemical Usage
In the secondary treatment stage, the CDFU requires only a small amount of PAC (Poly Aluminum Chloride) to achieve the desired treatment effect. Compared to traditional methods, the amount of chemicals used is significantly reduced, and the amount of floating sludge is lowered by more than one-third, thereby minimizing the production of oily sludge (hazardous waste). This not only lowers the cost of secondary treatment but also reduces potential environmental hazards.
Closed and Pressurized Operation
The CDFU system operates in a closed and pressurized manner, effectively preventing the leakage of harmful gases such as hydrogen sulfide and oil vapor. This operation mode not only improves the site environment and enhances safety but also strengthens the system's environmental performance. For operators and surrounding residents, this harmless treatment approach is undoubtedly a blessing.
Short Single-Stage Residence Time
The single-stage residence time in the CDFU system is less than 5 minutes, indicating very high treatment efficiency. Due to its small footprint, full automation, easy operation and maintenance, and short construction period, the system can be implemented online within existing wastewater treatment facilities, greatly reducing renovation costs and time.
Strong Resistance to Shocks
The CDFU system has strong shock resistance and can withstand significant fluctuations in water quality. This is a significant advantage for wastewater treatment plants with frequent changes in water quality. Regardless of how the water quality varies, the CDFU system maintains a stable operating state, ensuring that the treatment effect is unaffected.
Technical Specifications
Inlet Water Quality
The CDFU system is suitable for treating wastewater with an oil content ≤500mg/L and suspended solids content ≤200mg/L. This range covers most industrial wastewaters, especially those from the petrochemical and pharmaceutical industries.
Effluent Quality
Wastewater treated by the CDFU system has an oil content ≤20mg/L and suspended solids content ≤20mg/L. Such effluent quality meets national discharge standards and can even enter subsequent wastewater treatment processes, ultimately achieving compliant discharge.
Conclusion
The new oily wastewater treatment process with CDFU as its core technology is becoming the mainstream choice in the field of wastewater treatment due to its high efficiency, environmental friendliness, and economy. Whether from the perspective of technical specifications or practical application effects, the CDFU system demonstrates strong competitiveness. In the future, with continuous technological advancements and improvements, the CDFU system will undoubtedly bring benefits to more wastewater treatment plants and make greater contributions to environmental protection.
