Filter Application in Environmental Protection
In the era of green manufacturing, we need smarter environmental solutions. Advanced filtration technologies not only purify industrial emissions effectively, but their recyclable nature also reduces resource consumption — this is the true meaning of sustainable development.
Use of Filter Materials in Air Purification
In air filtration technology for environmental protection, modern purification systems are facing increasingly complex air pollution challenges.
Ceramic foam filters demonstrate exceptional comprehensive performance in environmental air purification. Their unique ceramic-based porous structure combines high-efficiency filtration with multifunctionality. With inherent advantages in high-temperature and corrosion resistance, these materials are adaptable to extreme environments, such as industrial flue gases, overcoming the temperature limitations of traditional organic filter media.
Their three-dimensional, interconnected pore structure not only enables precision filtration from the micron to nanometer scale, but also ensures low airflow resistance with a porosity of up to 80%. Furthermore, ceramic foam serves as an ideal catalyst carrier. By loading photocatalytic materials, a single filter media can simultaneously intercept particulate matter and degrade gaseous pollutants. This synergistic physical and chemical purification mechanism significantly improves treatment efficiency. Their excellent mechanical strength and chemical stability support repeated high-pressure backwashing and regeneration, significantly extending their service life. Their inherent explosion-proof properties broaden their application potential in flammable and explosive environments.
Whether handling high temperatures, corrosive gases, or high humidity, ceramic foam filters demonstrate excellent environmental adaptability, becoming an irreplaceable key material in complex air pollution control and representing a significant development in filtration technology towards high performance and multifunctionality.
Function in Air Purification
Particle Interception
Efficiently filters suspended particles such as PM2.5 and dust.
High-Temperature Resistance
Operates stably in industrial exhaust environments exceeding 600°C.
Catalytic Purification
Loaded photocatalysts degrade gaseous pollutants such as formaldehyde and VOCs.
Long-Lasting Durability
Supports high-temperature sintering and regeneration, with a service life far exceeding that of ordinary filter media.
Typical Application Scenarios
Industrial Waste Gas Treatment
Dust Removal of High-Temperature Flue Gas from Steel and Cement Plants
Chemical VOCs Control
Catalytic Purification of Organic Waste Gas from the Petrochemical Industry
Laboratory Ventilation Systems
Corrosive Gas Filtration and Particulate Interception
Special Environment Purification
Radiation Protection for Nuclear Power Plants and Air Filtration in Explosion-Proof Facilities
Automotive Exhaust Purification
Treating Engine Emissions as a Catalytic Converter Carrier
Waste Incineration Flue Gas
Simultaneous Removal of Dioxins and Particulate Matter
Electronic Cleanrooms
Maintaining the Ultra-Clean Environment Required for Precision Manufacturing
Medical Sterilization Systems
Terminal Filtration for High-Temperature Disinfection
Specific Filter Application Cases
in the Air Purification
Exhaust Gas Treatment for Sintering Machines in Steel Plants
In steel production, the treatment of high-temperature flue gas generated by the sintering process has long been a technical challenge. New integrated treatment technologies using ceramic foam filters offer significant advantages. These filters utilize a carefully designed gradient pore structure to efficiently and selectively capture particles of varying sizes. Crucially, by uniformly loading a specialized catalyst on the ceramic surface, a single device simultaneously performs both dust removal and denitrification functions.
This integrated design not only significantly simplifies the process flow but also significantly improves system space utilization and operational efficiency. Practical applications have demonstrated that this technology can consistently meet ultra-low emission standards and demonstrate excellent reliability and treatment efficiency in high-temperature environments.
VOCs Control in the Petrochemical Industry
VOC control in the petrochemical industry faces the challenge of balancing treatment efficiency and operating costs. Photocatalytic oxidation technology based on ceramic foam offers an innovative solution. This technology leverages the unique three-dimensional porous structure of ceramic foam. Through a specialized process, nanoscale photocatalysts are uniformly loaded onto the ceramic skeleton, forming a composite purification material with a large active surface area.
Under ultraviolet light excitation, this composite material efficiently degrades organic pollutants, completely converting them into harmless substances. Compared to traditional processes, this technology offers significant advantages such as low energy consumption, zero secondary pollution, and a long catalyst life. The excellent thermal stability and mechanical strength of the ceramic foam support ensure that the catalytic system maintains stable treatment performance even under long-term continuous operation.
Use of Filter Materials in Water Treatment
With the global shortage of water resources and increasing pollution, water treatment technology has become a core issue in the environmental protection field.
Ceramic foam filters, with their unique three-dimensional interconnected pore structure, demonstrate exceptional stability in water treatment. This porous medium, made from ceramic materials such as alumina or silicon carbide and sintered at high temperatures, not only boasts a high porosity of 60%-90% but is also highly resistant to extreme operating environments. In high-temperature wastewater treatment applications, such as industrial wastewater discharged from the metallurgical and chemical industries at temperatures exceeding 1000°C, ceramic foam is virtually the only filter material capable of stable operation.
Its exceptional mechanical strength enables it to withstand long-term operation under high pressure, while its excellent corrosion resistance allows it to operate with ease in strong acid and alkaline environments. In addition to its basic function of filtration of suspended solids, specially modified ceramic foam can also be used for oil-water separation, with its surface properties adjustable to either hydrophilic or hydrophobic properties. More notably, this material is often used as a biofilm carrier or catalyst support matrix, enabling more advanced water treatment capabilities by immobilizing microorganisms or loading photocatalysts.
Function in Water Treatment
Suspended Solids Removal
Filters tiny particles (typically with a precision of 10-100 microns).
Oil-Water Separation
Hydrophilic or hydrophobic modification allows for the treatment of oily wastewater.
Carrier Function
Serves as a biofilm carrier (immobilizing microorganisms for biofiltration).
Carrying catalysts (such as TiO₂) for photocatalytic degradation of organic matter.
High-Temperature Wastewater Treatment
Pretreatment of high-temperature wastewater in the metallurgical and chemical industries.
Typical Application Scenarios
Drinking Water
Removal of algae and sediment during the pretreatment stage.
Pre-membrane Protection
Serves as a pretreatment for reverse osmosis (RO) or ultrafiltration (UF) to extend membrane life.
Industrial Wastewater
Electroplating, pharmaceuticals , textiles, and other industries.
Municipal Wastewater
Urban sewage treatment plants (Class A standard, recycled water reuse).
Rural Decentralized Wastewater
Constructed wetlands and integrated systems.
Seawater Desalination
Large-Scale Application of Reverse Osmosis Membrane Technology.
Specific Filter Application Cases
in the Water Treatmen
Industrial Wastewater Advanced Treatment
In electroplating wastewater treatment, modified alumina ceramic foam filters (pore size 20-50μm) are used as the final barrier to intercept heavy metals. A company uses a ceramic foam filter cartridge with a gradient pore design. In acidic wastewater with a pH of 3, it achieves a removal rate of over 99.5% for heavy metal ions such as nickel and chromium, while also being resistant to strong acid corrosion. Its three-dimensional interconnected pore structure allows for backwash regeneration and a service life of over five years.
Zero Discharge of High-Salt Chemical Wastewater
A chemical plant uses a ZrO₂ ceramic foam membrane (pore size 100 nm) to treat saline wastewater. At an operating pressure of 4 MPa, it achieves a stable salt rejection rate of over 98% and a flux of 30 LMH. Its chloride ion corrosion resistance (>50,000 mg/L) significantly outperforms polymer membranes, and combined with a crystallizer, it enables salt resource recovery.
Use of Filter Materials in Aquariums
Filters are core components of an aquarium ecosystem, performing far more than simple mechanical filtration. They are integrated into a comprehensive water treatment system that integrates physical, chemical, and biological treatments.
Ceramic foam filters play multiple key roles in aquarium filtration systems. Their unique three-dimensional porous structure not only effectively intercepts suspended particulate matter but also provides an ideal attachment surface for nitrifying bacteria, significantly improving biological filtration efficiency. Compared to traditional filter media, this ceramic material offers superior corrosion resistance and mechanical strength, ensuring long-term stable operation without releasing harmful substances.
Through specialized modification, ceramic foams can also be expanded to include chemical purification functions such as photocatalytic degradation of organic matter and adsorption of heavy metals. Newly developed intelligent ceramic foams can even automatically adjust their filtration performance based on changes in water quality, significantly extending aquarium maintenance cycles. This combination of physical interception, biological loading, and chemical purification makes ceramic foams an ideal choice for modern aquarium filtration systems.
Function in Aquariums
Physical Filtration
Efficiently intercepts suspended particles such as fish food residue and excrement
Biological Carrier
Large surface area fosters nitrifying bacteria for ammonia and nitrogen degradation
Chemical Purification
Modified media can adsorb heavy metals or photocatalytically decompose organic matter
System Stability
Corrosion-resistant materials avoid the aging and contamination issues of traditional filter media
Specific Filter Application Cases
in the Aquariums
Triple Filtration System for Tropical Fish Tanks
In large arowana tanks, ceramic foam serves as the primary physical filtration layer. Its unique open-pore structure effectively intercepts food residue and fish excrement, while also acting as a carrier for nitrifying bacteria, completing the filtration chain with subsequent bio-balls and activated carbon. Compared to traditional filter pads, ceramic media is less prone to clogging and has a significantly longer service life. Simple rinsing restores most filtration performance during maintenance.
Biological Filtration for Coral Reef Aquariums
Saltwater aquariums utilize specially designed ceramic foam modules. Their rough, microporous surface provides an ideal breeding environment for marine nitrifying and denitrifying bacteria. This design effectively mimics the natural purification process of coral reef ecosystems, achieving efficient ammonia-nitrogen conversion within a limited space, making it particularly suitable for aquatic organisms sensitive to water quality.
Planted Aquarium Chemical Adsorption System
By impregnating ceramic foam with zeolite, a composite filter material has been developed that combines physical filtration and ion exchange capabilities. This improved ceramic not only filters suspended matter but also selectively adsorbs heavy metal ions and excess nutrients in the water, creating a more stable water quality environment for aquatic plant growth and effectively inhibiting excessive algae growth.
Contact us today for a consultation that helps you solve your purification problems and learn how our ceramic filters can help you!
