A New Advanced Wastewater Treatment Process: CDOF Technology Opens a New Direction
Conventional advanced wastewater treatment processes have obvious limitations: the activated sludge process is prone to sludge bulking, biofilm processes require regular unclogging, and coagulation-sedimentation produces high-cost chemical sludge. To solve these problems, a new process has been derived from ozone-based advanced catalytic oxidation technology — the CDOFCDOF (ozone advanced catalytic oxidation and flotation integrated device).
I. Process Introduction
The new process centers on the CDOFCDOF as the core and treats wastewater in two stages:
CDFUPre-treatment: the biochemical effluent passes through cyclonic dissolved air flotation to remove part of the suspended solids and COD, laying the foundation for advanced treatment;
CDOF advanced treatment: multiple catalytic oxidation reactions deeply degrade the COD, and the effluent is colorless, transparent and stably compliant.
Ozone is used as the gas source throughout; scum and backwash water are discharged into the scum tank, keeping the system clean and efficient.
II. Technical Features
High efficiency and shock resistance
The short process design improves efficiency, with strong shock load resistance and stable effluent quality.
Patented energy-saving advantages
Multiple patented technologies support a high COD degradation rate and decolorization effect; the ozone dosing ratio is only 1/2 to 1/4 of conventional processes, significantly reducing energy consumption.
Intensive design
Multiple catalytic oxidation technology accelerates the reaction rate (residence time <15 minutes); the skid-mounted design occupies only 1/5 of the conventional footprint.
Intelligent operation and maintenance
Fully automated enclosed pressurized operation eliminates ozone leakage; information-based management reduces labor costs and supports remote real-time monitoring.
III. Comparison with Conventional Processes
| Dimension | CDOFCDOF technology | Conventional process |
|---|---|---|
| Effluent quality | Stable and efficient compliance | Relatively large fluctuations |
| Footprint | Reduced to 1/5 (skid-mounted design) | High demand |
| O&M cost | Automation reduces labor and energy costs | High chemical sludge disposal costs |
| Shock resistance | Strong | Susceptible to load fluctuations |
IV. Application Case
A municipal wastewater treatment plant adopted the CDOFCDOF technology, and:
The effluent COD dropped to an extremely low level and stably met the standard;
Operating costs were greatly reduced, with significant economic and social benefits.
V. Conclusion
CDOF The CDOF technology, with its short process, high efficiency, small footprint and intelligent O&M as core advantages, achieves efficient COD degradation and breakthrough energy reduction through patented technologies. Its shock resistance and stable compliance capability, combined with remote monitoring, provide an innovative solution for advanced wastewater treatment with broad application prospects.
