Technical Introduction
Technical Introduction
CDOF: Cyclonic Dissolved Ozone Flotation Unit, a patented technology of Sinokle, integrates ozone multi-stage catalytic oxidation technology, hydrodynamic cavitation technology, and cyclonic dissolved air flotation technology. It is a domestically pioneering, internationally advanced high-efficiency oxidation and flotation integrated unit, capable of efficiently and rapidly removing various pollutants from wastewater, including oils, suspended solids, colloids, COD, and bacteria.
The unit consists of an oxygen generation system, an ozone generation system, a high-efficiency ozone dosing system, a multi-stage catalytic reaction system, and a cyclonic dissolved air flotation system, achieving synergistic effects of multiple core technologies including homogeneous and heterogeneous catalysis, cyclonic technology, dissolved air flotation technology, cavitation, supercritical catalytic oxidation, and fully sealed pressurized oxidation.
Product Parameters
Product Parameters
| Parameter | Technical Specification |
|---|---|
| Treatment Capacity (Q) | ~200 m3/h |
| Medium Temperature | 50 °C |
| System Pressure Drop | ≤0.05 MPa |
| Retention Time | ≤15 min |
| Ozone Dosage | 10~200 mg/L (depending on conditions) |
| Ozone Dosage to COD Removal Ratio | ≤1 |
Technological Advantages
Technological Advantages
Technical Comparison
Technical Comparison
| Comparison Item | Coagulation Sedimentation + Conventional Ozone Catalytic Oxidation | CDOF (Ozone Multi-stage Catalytic Oxidation & Flotation Integrated Technology) |
|---|---|---|
| Application | Advanced treatment of biochemical effluent to meet Class I or higher comprehensive discharge standards | |
| Principle | Single catalyst catalyzed / uncatalyzed ozone oxidation reaction | Homogeneous and heterogeneous catalysts, supercritical cavitation catalysis, cyclonic dissolved air flotation multi-technology high-efficiency synergistic catalytic oxidation |
| Technology Level | Conventional technology | PCT international patent, 2 invention patents |
| Footprint | Low reaction efficiency, reaction time 60~90min, large footprint | High reaction efficiency, reaction time 10~15min, footprint only 1/5 of conventional |
| Stability | Catalysts prone to clogging, scaling, and passivation losing activity; virtually ineffective in long-term operation | Fully automatic backwashing, acid washing, and catalyst activation; long-term high-efficiency catalysis with stable performance |
| Ozone Utilization Rate | Ozone dosage / COD reduction: 1.5~4 | Utilization rate≥99.9%, Ozone dosage / COD reduction: 0.5~1.2 (2~4 times improvement) |
| Operating Cost | High ozone dosage, high energy consumption, high operating cost | Low ozone dosage, low energy consumption, only 2/3 of conventional or even lower |
| Safety & Environmental Protection | Atmospheric pressure reaction, ozone leakage, significant safety and environmental risks, low automation level | Sealed pressurized tank, fully automatic operation, zero ozone leakage, no safety or environmental risks |
| Commissioning Period | Long construction and commissioning period (extensive civil works, large footprint) | Short construction and commissioning period (skid-mounted design, simple process) |
Application Cases
Application Cases
CDOF Typical Application Process Flow
Typical application process flow of the CDOF ozone advanced catalytic oxidation unit, integrating oxygen generation, ozone generation, catalytic reaction, and flotation separation into one system.
Refinery Wastewater Advanced Treatment Project
CDOF is widely applied in oilfield fracturing flowback fluid, landfill leachate, pharmaceutical and metallurgical chemical wastewater advanced treatment, black-odor river remediation, and other fields.
CDOF Ozone Catalytic Oxidation Flotation Integrated Unit
Ozone Advanced Oxidation + Cyclonic Dissolved Air Flotation + Multi-stage Catalytic Technology in One — Domestically Pioneering, Internationally Leading High-Efficiency Wastewater Advanced Treatment Equipment
Product Overview
Perfect Integration of Ozone Advanced Oxidation and Cyclonic Dissolved Air Flotation
What is CDOF?
CDOF (Cyclonic Dissolved Ozone Flotation) is a patented product independently developed by SINOKLE, creatively combining ozone advanced oxidation technology, cyclonic technology, and dissolved air flotation technology to achieve efficient and comprehensive removal of various refractory wastewaters.
The unit integrates ozone multi-stage catalytic oxidation technology, hydrodynamic cavitation technology, and cyclonic flotation technology. It is a domestically pioneering, internationally advanced high-efficiency oxidation and flotation integrated unit, capable of efficiently and rapidly removing various pollutants from wastewater, including oils, suspended solids, colloids, COD, and bacteria.
Working Principle
Multi-stage, Multi-dimensional, Multi-stage Catalytic Oxidation Reaction System
Ozone Generation & Dosing
The oxygen generation system produces high-purity oxygen, which is converted into ozone by the ozone generator. The high-efficiency dosing system mixes ozone gas with wastewater.
Multi-stage Catalytic Oxidation
Homogeneous and heterogeneous catalysts work synergistically to generate abundant hydroxyl radicals (OH) with an oxidation potential of 2.80V, efficiently degrading organic matter.
Cyclonic Flotation Separation
Cyclonic centrifugal force and micro-nano bubbles work synergistically to rapidly separate and remove suspended solids, colloids, and scum.
Tail Gas Destruction & Emission
Ozone-containing tail gas is treated by the tail gas destructor to meet emission standards. Fully sealed operation with zero leakage.
Process Flow
Influent
Raw Wastewater
CDFU
Cyclonic Oil/SS Removal
Ozone Generator
O2 to O3
CDOF
Catalytic Oxidation & Flotation
Compliant Discharge
COD/Color Standards Met
Product Features
Pioneering Integrated Technology
Integrates ozone multi-stage catalytic oxidation, cyclonic dissolved air flotation, and coagulation into one unit, efficiently removing COD, SS, colloids, bacteria, etc.
Multi-stage Catalytic Synergy
Pressurized catalysis, homogeneous/heterogeneous catalysis, hydrodynamic cavitation catalysis, micro-pressure catalysis, cyclonic fluidization and other multi-dimensional reactions.
Ultra-fast Reaction
Retention time <15min (conventional: 90min), patented reactor structure, efficiency improved by over 4 times.
Ultra-high Ozone Utilization
Utilization rate over 99.98%, dosage ratio 0.5~1.2 (conventional: 2~4), operating cost only 1/3~1/2 of conventional.
Fully Automated Control
DCS/PLC system precisely controls ozone dosage, liquid level, and pressure, automatically optimizing based on water quality to reduce costs.
Safe & Eco-friendly
Fully sealed pressurized operation, zero ozone leakage; zero chemical agents, no secondary pollution, sludge volume reduced by over 90%.
Comparison with Conventional Processes
CDOF vs Fenton + Coagulation Sedimentation (Conventional Technology)
| No. | Comparison Item | Fenton + Coagulation Sedimentation | CDFU + CDOF |
|---|---|---|---|
| 1 | Treatment Effect | Slightly yellow effluent, unstable COD removal | Colorless and odorless effluent, high and stable COD removal rate |
| 2 | Stability | Complex operation, poor adaptability to water quality fluctuations | Fully automatic control, real-time multi-parameter monitoring, excellent stability |
| 3 | Reaction Rate | Slow efficiency, >=60min | High efficiency and rapid, <=15min |
| 4 | Treatment Cost per Ton | >=25 CNY/ton | <=15 CNY/ton (1/3~1/2) |
| 5 | Sludge Volume | 4 kg/t | 0.1 kg/t (only 1/40) |
| 6 | Decolorization Effect | Poor, prone to color rebound | Thorough decolorization, no color rebound |
| 7 | Safety & Environmental Protection | Exhaust gas leakage, high risk of secondary pollution | Fully sealed pressurized operation, zero leakage, safe and eco-friendly |
| 8 | Footprint | Multiple tanks, large footprint | Skid-mounted design, compact footprint |
CDOF vs Conventional Ozone Catalytic Oxidation
| No. | Comparison Item | Conventional Ozone Catalytic Oxidation | CDOF |
|---|---|---|---|
| 1 | Principle | Single catalyst / no catalyst | Homogeneous + heterogeneous + supercritical cavitation + cyclonic flotation multi-stage catalysis |
| 2 | Technology Level | Conventional technology | PCT international patent + 2 invention patents |
| 3 | Retention Time | 60~90min | 10~15min TOP |
| 4 | Footprint | Large footprint | Only 1/5 of conventional |
| 5 | Catalyst Stability | Prone to clogging and scaling, virtually ineffective long-term | Fully automatic backwashing, activation and regeneration, long-term high efficiency OK |
| 6 | Ozone Utilization Rate | O3/COD: 1.5~4 | O3/COD: 0.5~1.2 (2~4 times improvement) TOP |
| 7 | Operating Cost | High ozone dosage, high energy consumption | Only 2/3 of conventional or even lower |
| 8 | Safety & Environmental Protection | Atmospheric pressure reaction, high ozone leakage risk | Sealed pressurized operation, zero leakage OK |
Core Conclusion
CDOF adopts ozone multi-stage catalytic oxidation and cyclonic dissolved air flotation integrated patented technology, with ozone utilization rate of 99.98%, retention time of <15min (1/6 of conventional), per-ton operating cost only 1/3~1/2 of conventional, and sludge volume reduced by over 90%. Fully sealed pressurized operation with zero ozone leakage, safe and eco-friendly — it is the optimal solution for wastewater advanced treatment and upgrade projects.
