Application and Evaluation of SINOKLE's Special Superhydrophilic Modification Technology in Wastewater Treatment
Against the backdrop of continuing industrial modernization, the composition of industrial wastewater is becoming increasingly complex, and problems such as refractory organics, high salinity and high organic load are becoming ever more severe. Conventional wastewater treatment processes generally face challenges including insufficient pollutant adsorption, low separation efficiency, weak fouling resistance and high operating costs. SINOKLE's material surface modification based on atomic layer deposition (ALD) technology yields a special superhydrophilic modification technology featuring high density, high conformality, atomic-level thickness controllability and large-area uniformity. With its unique advantages in material surface regulation, it provides a brand-new and highly efficient solution for industrial wastewater treatment. By constructing a precisely controllable superhydrophilic film on the substrate surface, the technology achieves breakthroughs in interface interaction optimization, separation efficiency improvement and fouling-resistance enhancement, effectively overcoming the technical bottlenecks of conventional wastewater treatment processes.
I. Core Technical Advantages: The Unique Characteristics of ALD Superhydrophilic Modification
Relying on the precise regulation characteristics of atomic layer deposition, the ALD superhydrophilic modification technology endows modified materials with outstanding performance advantages and lays a solid foundation for upgrading wastewater treatment processes:
1. Atomic-level thickness controllability: ALD technology grows films layer by layer by alternately pulsing precursors, allowing the thickness of the superhydrophilic modification layer to be precisely controlled at the atomic scale. This precise regulation enables customized design of the modification layer thickness according to wastewater treatment needs, ensuring full play of the superhydrophilic performance while avoiding cost increases or performance redundancy caused by excessive modification.
2. High density and high conformality: During atomic layer deposition, precursor molecules react with the substrate surface through chemical adsorption, forming a dense, pore-free superhydrophilic film that can effectively block the erosion of substrates by harmful substances in the wastewater environment. Moreover, the technology is not limited by substrate morphology: whether porous media, fibrous materials or complex structural components, it can achieve all-round, uniform surface modification, ensuring consistency of the overall superhydrophilic performance of the material.
3. Large-area uniformity: ALD technology has excellent large-area film-forming capability. In scaled production it can ensure uniform distribution of the superhydrophilic performance on the modified material surface, avoiding the impact of local performance differences on wastewater treatment results and providing reliable technical support for industrial-scale wastewater treatment applications.
4. Stable superhydrophilic performance: The superhydrophilic modification layer built by ALD forms a strong chemical bond with the substrate and is not easy to detach due to water scouring, pollutant adsorption or changes in the chemical environment. It can maintain stable superhydrophilic characteristics for a long time in complex wastewater treatment environments, ensuring the continuity and reliability of the treatment process.
II. Core Applications in Wastewater Treatment
1. Enhancing the adsorption and separation of refractory organics to deepen treatment
For refractory organic wastewater from industries such as pharmaceuticals, petrochemicals and printing and dyeing, ALD superhydrophilic modification technology strengthens the treatment effect by optimizing the surface interface characteristics of materials. On one hand, the superhydrophilic modification layer greatly increases the hydrophilicity and adsorptive active sites of the material surface, enhancing physical adsorption of refractory organics, while the interaction between hydrophilic groups and pollutant molecules promotes chemical adsorption. On the other hand, the highly dense modification layer effectively blocks pollutant molecules from penetrating into the substrate, avoiding material contamination and aging, and, combined with subsequent separation processes, achieves efficient separation and removal of refractory organics and reduces the risk of secondary pollution caused by the accumulation of intermediates. Practical application has verified that adsorption materials modified with this technology achieve more than 50% higher adsorption capacity for refractory pollutants such as benzene series, antibiotics and chlorinated organics than unmodified materials, with separation efficiency improved by 40%-60%.
2. Adapting to high-salinity and high-load water quality, expanding process applicability
High-salinity environments in industrial wastewater (such as reverse osmosis concentrate, with TDS up to over 58,000 mg/L) and high organic loads (such as ethylene wastewater from petrochemical enterprises, COD 1500-2000 mg/L) often reduce the adsorption capacity and separation efficiency of conventional treatment materials. ALD superhydrophilic modification technology, however, shows extremely strong water-quality adaptability:
For high-salinity wastewater, the hydration film formed on the surface of the superhydrophilic modification layer can effectively repel salt ions and prevent them from crystallizing and depositing on the material surface, without affecting the material's adsorption and separation performance for organic pollutants. After several days of continuous operation it still maintains a stable treatment effect, with a performance decay rate more than 60% lower than that of conventional materials.
For wastewater with a high organic load, materials modified by ALD can quickly adsorb large amounts of organic pollutants thanks to their high specific surface area and abundant hydrophilic active sites, greatly increasing the treatment capacity per unit volume of material and reducing the operating load of the treatment process. Compared with conventional processes, introducing this technology raises the wastewater COD removal rate from 42% to over 85% and shortens the treatment cycle by 30%-40%.
3. Reducing operating energy consumption and costs, improving process economics
In conventional wastewater treatment processes, problems such as low adsorption efficiency and difficult separation caused by insufficient material hydrophilicity require large amounts of energy for stirring and pressurization, and materials must be replaced frequently. By improving the adsorption and separation efficiency of materials, ALD superhydrophilic modification technology reduces energy consumption in stirring, pressurization and other stages, cutting power consumption per ton of water by 30%-45%.
Modified materials have excellent fouling resistance and a stable service life, reducing material replacement frequency and maintenance costs; at the same time, the high adsorption capacity lowers chemical dosing. Overall operating costs are more than 40% lower than those of conventional processes, significantly improving the economic feasibility of wastewater treatment.
4. Ensuring process stability and extending the operating cycle
The modification layer built by ALD superhydrophilic modification technology binds firmly to the substrate and has good chemical stability and corrosion resistance. It is not easily degraded or deactivated in complex wastewater environments such as acidic, alkaline and high-salinity conditions, and is little affected by water quality fluctuations. Meanwhile, the superhydrophilic characteristics effectively reduce the adhesion and scaling of pollutants on the material surface, lowering the risk of equipment blockage and reducing maintenance frequency. Compared with conventional treatment materials, the service life of modified materials can be extended to more than 6 years (industry average 2-3 years), the operating stability of the treatment process is greatly improved, and there is no secondary pollution such as metal leaching, meeting the heavy metal discharge standard GB 8978-1996.
III. Summary
With core advantages such as atomic-level thickness controllability, high density, high conformality and large-area uniformity, the ALD special superhydrophilic modification technology independently developed by SINOKLE comprehensively optimizes wastewater treatment processes in terms of pollutant removal depth, process applicability, operating economics and stability. The technology effectively solves the treatment difficulties of industrial wastewater with refractory organics, high salinity and high loads, significantly improving wastewater treatment efficiency and effluent quality while greatly reducing operating energy consumption and costs, in line with the green and low-carbon trend of environmental protection.
