Multimedia Filter

The Multimedia Filter is a core pretreatment equipment widely used in pure water preparation and water purification systems. It adopts advanced design and efficient filtration technology, playing a crucial role in removing impurities from raw water and improving water quality.

Available in multiple types to meet diverse filtration needs, this filter effectively removes suspended solids, organic matter, colloids, and other impurities from raw water through pressure-driven filtration via multiple filter media. It reduces water turbidity, protects subsequent water treatment equipment (such as RO systems), and lays a solid foundation for high-quality water purification. With simple structure, reliable performance, and easy operation, it is widely applicable to municipal, industrial, and commercial water treatment scenarios, and supports OEM/ODM customization to match specific user requirements.

• Common filter media：Quartz sand, anthracite coal, activated carbon, manganese sand, etc.

• Operating pressure：0.2-0.6 MPa

• Operating flow rate：10-120m³/h (customizable)

• Influent Turbidity：≤20 NTU

• Effluent Turbidity：≤3 NTU

• Operating Temperature：5-45°C

• Filtration Velocity：8-12 m/h

• Backwash Intensity：12-15 L/(m²·s)

• Backwash Cycle：8-24 hours

• Material：CS/SS304/SS316/FRP

• Optional Features：PLC with touch screen, differential pressure triggered backwash

• Diverse Types for Multiple Needs: Offers various types including quartz sand filter, activated carbon filter, and manganese sand filter, which can be flexibly selected according to raw water quality and filtration requirements, adapting to different water treatment scenarios.

• Efficient Impurity Removal: Through pressure-driven filtration via multiple filter media, it effectively removes suspended solids, organic matter, colloids, and other impurities from raw water, significantly reducing water turbidity and improving water quality.

• Essential Pretreatment Equipment: As a key component in the pretreatment stage of pure water preparation and water purification systems, it protects subsequent equipment (such as RO membranes) from contamination and fouling, extending the service life of the entire water treatment system.

• Simple Operation & Low Maintenance: The filter features a simple structure and user-friendly design, requiring no complex daily operation. Regular backwashing is the main maintenance work, which is convenient and time-saving, reducing operational costs.

• Customizable Configuration: Supports OEM/ODM customization according to user-specific needs, including filter type, filter media, size, and filtration capacity, to perfectly match on-site installation conditions and water treatment requirements.

• Wide Applicability: Suitable for municipal water supply, industrial circulating water, swimming pool purification, pure water system pretreatment, and other scenarios, providing reliable filtration solutions for various industries.

• Stable & Durable: Adopts high-quality filter media and structural materials, ensuring stable filtration performance, strong corrosion resistance, and long service life, even in harsh water treatment environments.

• Municipal Water Supply: Used in municipal water purification processes to remove suspended solids, colloids, and organic matter from raw water, improving the quality of tap water and meeting residents' daily water needs.

• Industrial Circulation Water Systems: Applied to industrial circulating water pretreatment, removing impurities to prevent pipeline blockage and equipment scaling, ensuring the stable operation of industrial production systems.

• Swimming Pool Purification: Used for swimming pool water filtration, removing suspended solids, algae, and other impurities, keeping the pool water clean and clear, and meeting hygiene standards.

• Pure Water System Pretreatment: As a core pretreatment component for pure water preparation systems (such as RO systems), it removes large particles and impurities to protect RO membranes and other precision equipment, ensuring the efficiency and stability of pure water production.

• Other Water Purification Scenarios: Suitable for commercial and industrial water purification scenarios that require impurity removal and turbidity reduction, such as hotel water supply, food processing water pretreatment, and medical water purification.

Usage Methods

• Equipment Selection: Select the appropriate filter type (quartz sand, activated carbon, manganese sand, etc.) according to raw water quality, impurity type, and filtration requirements. Confirm the customization parameters if special needs exist.

• Installation & Commissioning: Install the filter on a flat, firm foundation, correctly connect the raw water inlet, filtered water outlet, and backwash pipeline. Professional technicians will commission the equipment, adjust the filtration pressure and flow rate, and test the backwash function to ensure normal operation.

• Daily Operation: Start the filtration system, and raw water will pass through the filter media under pressure to complete impurity removal. Monitor the influent turbidity and filtration pressure regularly; when the pressure increases significantly or the filtration effect decreases, perform backwashing in a timely manner.

• Backwashing & Maintenance: Backwash the filter every 8-24 hours (adjust according to influent turbidity). During backwashing, ensure sufficient water flow to thoroughly flush the filter media and remove accumulated impurities. Regularly inspect the filter media, replace it when it is worn or loses filtration efficiency, and check the tightness of pipelines and valves to prevent leakage.

Safety Precautions

• Ensure the filter is installed correctly and the pipeline connections are tight to avoid water leakage and pressure loss during operation.

• Do not exceed the specified operating pressure during use; regularly check the pressure gauge to prevent equipment damage caused by overpressure.

• Perform backwashing on time according to the influent turbidity to avoid filter media clogging, which may affect filtration efficiency and damage the equipment.

• When replacing filter media or maintaining the equipment, shut down the system and cut off the water supply first to prevent water splashing and personal injury.

• Store the filter in a well-ventilated, dry environment, away from direct sunlight, high temperature, and corrosive substances, to extend the service life of the equipment.

• Operators should be familiar with the equipment operation manual before use; avoid misoperation that may cause equipment failure or safety hazards.

• Keep the equipment out of the reach of children and unauthorized personnel to prevent misoperation and accidental injury.

FAQ

• How often should a multimedia filter be backwashed?

Typically, the backwash frequency is every 8-24 hours. The specific interval depends on the influent turbidity—if the raw water has high turbidity and more impurities, the backwash frequency should be appropriately increased to ensure the filtration effect and avoid filter media clogging.

• What are the typical applications of multimedia filters?

Multimedia filters are widely used in various water treatment scenarios, including municipal water supply (tap water purification), industrial circulating water systems (pretreatment to prevent scaling and blockage), swimming pool purification (keeping water clean), and pure water system pretreatment (protecting subsequent precision equipment such as RO membranes).

• Can we customize the equipment?

Yes, we offer OEM/ODM customization services based on your specific needs. We can customize the filter type (quartz sand, activated carbon, manganese sand, etc.), filter media specifications, equipment size, filtration capacity, and other parameters to perfectly match your raw water quality, on-site installation conditions, and water treatment requirements.

• Is your company a trading company or a manufacturer?

We are a professional manufacturer with in-house production and export capabilities. Our company integrates R&D, manufacturing, and international trade, with a complete production line and professional technical team. We provide factory-direct prices to reduce your procurement costs, and offer stable product quality, on-time delivery, and comprehensive pre-sales consultation and after-sales support.

• What is the difference between different types of multimedia filters?

Different types of filters are designed for specific impurity removal needs: Quartz sand filters are mainly used to remove suspended solids, sediment, and large particles; activated carbon filters focus on adsorbing organic matter, odors, and residual chlorine; manganese sand filters are suitable for removing iron and manganese ions from raw water. You can select the appropriate type according to your raw water quality.

• How to judge whether the filter media needs to be replaced?

When the filtration effect decreases significantly (e.g., filtered water turbidity exceeds the standard), the backwash effect is poor, or the operating pressure remains high even after backwashing, it indicates that the filter media may be worn, clogged, or lose its filtration capacity, and it is time to replace the filter media.