Working Principle
The titanium dioxide (TiO₂) recovery process primarily utilizes ceramic microfiltration membranes to treat wastewater generated during the production of titanium dioxide, enhancing recovery rates. The specific steps are as follows:
Wastewater Collection: During the production of titanium dioxide, wastewater containing suspended TiO₂ particles is generated. These particles are small and settle slowly, making traditional inclined plate sedimentation tanks inefficient for effective recovery.
Membrane Filtration:
Ceramic microfiltration membranes are employed to process the wastewater. The membrane's pore size is suitable for filtering out TiO₂ particles while allowing clarified sulfuric acid and water to pass through.
The microfiltration process effectively separates suspended TiO₂ particles from the wastewater, significantly improving recovery rates.
Clarified Liquid Reuse:
The clarified sulfuric acid obtained from the filtration can be reused, reducing raw material wastage.
Additionally, the clarified water can be utilized as cooling water, further enhancing resource utilization efficiency.
Product Features
High Recovery Efficiency: Ceramic microfiltration membranes effectively recover TiO₂ particles from wastewater, improving overall titanium dioxide yield and reducing economic losses.
Resource Reuse: The clarified sulfuric acid and water can be recycled, minimizing the demand for fresh raw materials during production.
Economic Benefits: By recovering TiO₂ and clarified liquids, production costs are reduced, enhancing the economic benefits for the enterprise.
Environmental Friendliness: The process reduces wastewater discharge, complying with environmental regulations and contributing to the sustainable development of the enterprise.
Ease of Operation: The use of ceramic microfiltration membranes simplifies the wastewater treatment process, reducing operational difficulty.
Application Areas
Titanium Dioxide Production: Primarily used in the production processes of titanium dioxide, particularly in sulfate processes.
Chemical Industry: The technology can be expanded to treat wastewater in other chemical production processes, supporting resource recovery and reuse.
Coatings Industry: Improves the efficiency of titanium dioxide use in coating production, optimizing manufacturing processes.
Environmental Engineering: Serves as a technical means for wastewater treatment, reducing the environmental impact of chemical wastewater and enhancing the enterprise's environmental image.
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