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Heterogeneous catalytic ozone oxidation technology

Time:2024-07-01 Click:53

Heterogeneous ozone-catalyzed oxidation catalyst

SINOKLE uses a variety of transition metal oxides as catalytic components, through a large number of experiments and engineering verification, optimize the allocation ratio of each group, and develop a catalyst with high adaptability and catalytic activity; Using multi-stage precise temperature control sintering technology, the advantages are as follows:

Strong catalytic performance, good stability, long life, effectively reduce the loss rate during use, prevent secondary pollution;

The catalyst was modified by atomic deposition technology to form a high specific surface area.

The catalyst carrier has super hydrophilicity, the catalyst is not easy to pollute, scale and clog, and can run for a long period.

The catalyst can effectively reduce the activation energy of the reaction, so as to achieve deep oxidation and maximize the removal of organic pollutants.

It can accelerate the self-decomposition of ozone in water, increase the concentration of ·OH produced in water, thereby improving the ozone oxidation effect and ozone utilization rate, and the oxidation efficiency is 2-5 times higher than that of simple ozone oxidation.

Heterogeneous catalyst

The characterization of the composite catalyst is shown in the following table.

Compressive strength (Mpa)≥1

Compressive strength (Mpa) : 20.3

Pore volume (ml/g)>250

Specific surface area (㎡/g) : 0.7

Loose packing density (t/m ') : 2-4

Diameter (mm)≤0.3

Wear > %5

Appearance: Gray sphere

Hydraulic cavitation technology

The gas distribution mode of the conventional ozone oxidation process is that the aerated ozone is mixed with the wastewater at the bottom of the reactor, and the residual ozone is discharged from the top through the exhaust gas destruction, and the effluent is discharged from the upper part of the contact pool. The ability of the ·OH produced by the direct oxidation of ozone is weak, and the degradation rate of complex organic pollutants is slow and the oxidation is incomplete, which usually requires the addition of excessive ozone to increase the operation cost of the process.

SINOKLE's patented technology combines hydraulic cavitation and ozone oxidation processes, using high-speed turbulent liquid to increase the contact chance of ozone and pollutants, reduce mass transfer barriers, and improve the utilization rate of ozone; At the same time, ozone gas provides more nuclei for the formation of cavitation bubbles, and the cavitation effect is improved. Under the extreme conditions of high temperature, high pressure and high chuai flow produced by cavitation, more active substances are produced by ozone decomposition, and the oxidation energy of the combined process is significantly improved.

Micro nano bubble technology

It is generally defined as a micrometer bubble with a diameter of <100 μm and a nano-bubble with a diameter of <1 μm. The micro-nano bubble can do Brownian motion in the solution, and the bubble will expand and explode in the liquid interface or remain for a long time with instantaneous impulse and higher mass transfer efficiency. The smaller the bubble radius, the larger the specific surface area and the faster the gas dissolves, the higher the mass transfer efficiency. Self-pressurized dissolution can enhance the material transfer ability between gas and liquid, so the gas transport process can continue after the gas content in water reaches supersaturation and maintain high mass transfer efficiency.

Micro nano bubble working effect

SINOKLE has fully explored the advantages of micro-nano bubbles and developed a set of microbubble generation system with imported multi-phase flow pump and proprietary microbubble generation technology. The microbubbles produced by this system stay in the water for a long time, reducing gas diffusion in the liquid. Some scholars have used electron spin resonance spectroscopy to verify that when the gas-liquid interface contracts, a large number of surrounding ions gather, the ion concentration increases significantly, and the collapse of the bubble causes a sudden rise in temperature, and drastic changes stimulate the generation of free radicals.

CDOF ozone catalytic oxidation air floatation integrated device

CDOF(Cyclonic Dissolved Ozone Flotation unit) creatively combines advanced ozone oxidation technology, cyclone flow technology and dissolved air flotation technology to achieve efficient comprehensive removal of all kinds of difficult wastewater. Multi-stage, multi-dimensional, multi-ozone catalytic oxidation reaction: pressure catalytic reaction, homogeneous and heterogeneous catalytic oxidation, hydraulic cavitation catalysis, micro-pressure catalytic oxidation, swirl fluidization reaction and other processes, the effect is stable and reliable.

CDOF devices are used in sewage treatment cases

To sum up, the use of a variety of patented technologies to enhance the heterogeneous ozone catalytic oxidation technology, after long-term industrial verification, heterogeneous ozone catalytic oxidation technology in the footprint, investment and operating costs are superior, with higher treatment efficiency, suitable for the treatment of refractory industrial wastewater.

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