Synergistic Homogeneous and Heterogeneous Catalytic Oxidation Technology for Efficient Industrial Wastewater Treatment

In the context of rapid industrial development, the composition of industrial wastewater has become increasingly complex. Issues such as difficult-to-degrade organic compounds, high salinity, and high organic load have become more prominent. Traditional treatment processes face challenges such as low catalytic efficiency, incomplete pollutant degradation, catalyst deactivation, and high operating costs. The Shenzhen Clear Science & Technology Co., Ltd (SINOKLE) has integrated homogeneous catalyst high-efficiency and rapid hydroxyl (-OH) generation technology with heterogeneous catalysts to synthesize various active metal oxides, high porosity micropore molding, hydrophilic modification for anti-pollution and anti-blocking, and other core technologies to create a unique homogeneous and heterogeneous multi-catalytic oxidation technology. This technology demonstrates significant competitive advantages in wastewater treatment processes, providing efficient solutions for the deep treatment of industrial wastewater. The technology achieves breakthroughs in active species generation efficiency, pollutant degradation depth, and process stability through the synergistic effect of homogeneous and heterogeneous catalysis, effectively overcoming the technical bottlenecks of traditional catalytic oxidation processes.

1. Core Technology Advantages: Unique Properties of Homogeneous and Heterogeneous Synergistic Catalysis

The homogeneous and heterogeneous multi-catalytic oxidation technology integrates the core advantages of both types of catalysts, forming a synergistic catalytic system that lays the foundation for upgrading wastewater treatment processes:

· Efficient Active Substances Generation: The homogeneous catalyst, through high-efficiency and rapid hydroxyl (-OH) generation technology, can rapidly produce a large number of highly active hydroxyl free radicals in the reaction system, achieving rapid preliminary oxidation of pollutants. The heterogeneous catalyst, by synthesizing various active metal oxides, utilizes metal ion valence state conversion to further catalyze the generation of hydroxyl free radicals, superoxide free radicals, and other active species, which then form a synergistic effect with the active species generated by the homogeneous catalyst, significantly enhancing the oxidation capability of the reaction system.

· Sufficient Reaction Interface Supply: The heterogeneous catalyst employs high-porosity micropore molding technology, creating a rich micropore structure that significantly increases the specific surface area per unit volume. This not only provides stable interface support for reactions between the homogeneous catalyst and pollutants, but also extends the contact time between pollutants and active species, addressing the core issues of insufficient reaction interfaces and low mass transfer efficiency in traditional catalytic processes.

· Strong Anti-pollution and Stability: The heterogeneous catalyst uses hydrophilic modification anti-pollution and anti-blocking technology to significantly enhance the hydrophilicity of the catalyst surface. This reduces the adsorption and scaling of pollutants on the catalyst surface, effectively preventing catalyst deactivation. At the same time, the synergistic effect between homogeneous and heterogeneous catalysis reduces the load on the use of single catalysts, and the two types of catalysts protect each other, extending the stable operation period of the overall catalytic system and ensuring the continuity and sufficiency of the reaction. 

· Flexible Catalytic Efficiency Regulation: The technology can flexibly adjust the dosage of the homogeneous catalyst and the ratio of active metal oxides and pore structure parameters of the heterogeneous catalyst based on the characteristics of the wastewater quality. This allows for customized optimization of the catalytic system, making it adaptable to the degradation needs of different types of pollutants. Compared to single catalytic technologies, this offers a stronger process adaptability.

2. Multi-dimensional Positive Impact on Wastewater Treatment Processes

· Enhancing Removal of Hard-to-degrade Organic Compounds and Improving Treatment Depth

For wastewater from industries like pharmaceuticals, petrochemicals, and textile dyeing that contain hard-to-degrade organic compounds, the homogeneous and heterogeneous multi-catalytic oxidation technology enhances treatment effectiveness through synergistic catalysis. On the one hand, the hydroxyl free radicals quickly generated by the homogeneous catalyst can rapidly attack the molecular structure of pollutants, breaking their stable chemical bonds and converting large, difficult-to-degrade organic compounds into small, easily degradable substances. On the other hand, the active metal oxides of the heterogeneous catalyst, with its high porosity structure, work synergistically to further oxidize and decompose small molecular intermediate products, ultimately converting them into harmless substances such as carbon dioxide and water, avoiding toxicity enhancement caused by intermediate product accumulation.

· Adapting to High-Salinity, High-Load Wastewater, Expanding Process Adaptability

The high-salinity environment in industrial wastewater often inhibits the effectiveness of traditional catalytic processes, but the homogeneous and heterogeneous multi-catalytic oxidation technology exhibits strong water quality adaptability:

· · For high-salinity wastewater, the active metal oxides of the heterogeneous catalyst, in synergy with the homogeneous catalyst, effectively overcome the inhibitory effects of salt ions on the catalytic reaction. Active species maintain stable oxidation activity even in high-salinity environments, rapidly decomposing difficult-to-degrade pollutants such as chlorinated organic compounds. After continuous operation for several days, stable treatment effects are maintained, and catalytic activity decay is much lower than that of conventional single catalytic processes.

· · For wastewater with high organic load, the rapid generation of active species by the homogeneous catalyst quickly reduces the pollutant load, while the high porosity structure of the heterogeneous catalyst ensures efficient subsequent deep oxidation. Compared to traditional processes, the introduction of this technology increases COD removal from 42% to 88% and benzene-series compound removal from 51% to 98%, significantly reducing the pollutant load and alleviating the burden on subsequent treatment units.

· Reducing Operating Energy Consumption and Cost, Improving Process Economic Feasibility

Traditional catalytic oxidation processes with single homogeneous catalysis suffer from high catalyst consumption and difficult recovery, or low efficiency and high energy consumption of heterogeneous catalysis. However, the homogeneous and heterogeneous multi-catalytic oxidation technology achieves dual optimization of energy consumption and catalyst consumption through synergistic effects.

The high-efficiency hydroxyl generation ability of the homogeneous catalyst reduces the amount of oxidant required, while the high catalytic activity and stability of the heterogeneous catalyst lower the proportion of homogeneous catalyst used. Overall oxidant consumption is reduced by more than 50%. At the same time, the anti-pollution and anti-blocking properties of the heterogeneous catalyst extend its service life, reduce catalyst replacement frequency, and with the efficient use of the homogeneous catalyst, the operating costs of wastewater treatment are greatly reduced, improving the economic viability of the process.

· Ensuring Process Stability, Extending Operating Period

The synergistic catalytic system of homogeneous and heterogeneous multi-catalytic oxidation technology is less affected by fluctuations in water quality. The hydrophilic modification technology of the heterogeneous catalyst effectively avoids equipment and catalyst blockage and scaling, reducing maintenance frequency. Furthermore, this technology does not cause secondary pollution issues such as metal leaching, meeting the heavy metal discharge standards of GB 8978-1996. Compared to conventional catalytic processes, this technology significantly improves operational stability, with the service life of the heterogeneous catalyst extended to over 6 years (industry average 2-3 years), greatly reducing the additional costs associated with process startups and equipment maintenance.

Conclusion

The homogeneous and heterogeneous multi-catalytic oxidation technology independently developed by the SINOKLE, with its core advantages of efficient active species generation, sufficient reaction interface supply, strong anti-pollution stability, and flexible catalytic performance regulation, has comprehensively optimized wastewater treatment processes from multiple dimensions, including pollutant removal depth, process applicability, operational economics, and stability. This technology not only effectively addresses the challenges of treating hard-to-degrade organic compounds, high salinity, and high-load industrial wastewater, but also significantly reduces treatment energy consumption and costs through synergistic catalysis, aligning with the green environmental protection development trend and offering broad industrial application prospects.