Nordstone | Multimedia Filter

Multimedia Filter – Advanced Multi-Layer Filtration Technology

Multimedia Filter Pressure Vessels are advanced filtration systems designed to remove suspended solids, turbidity, color, and particulate contaminants from liquids. They are widely used in industrial water treatment, chemical processing, petrochemical, power plants, and environmental engineering industries to ensure clean, safe, and process-ready water.

At NORDSTONE, we design and manufacture multimedia filter vessels with optimized media layers, high filtration efficiency, and compliance with international standards, including ASME Section VIII Div.1, API, and PED.

What is a Multimedia Filter Pressure Vessel?

A multimedia filter vessel uses multiple layers of filtration media with varying particle sizes and densities to capture suspended solids effectively. Water or liquid enters the vessel, passes through the layered media bed, and emerges as clarified water.

Key components include:

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Vertical or horizontal cylindrical pressure vessel

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Top distributor and under-drain system for uniform flow

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Multimedia bed (commonly Anthracite, Sand, Gravel)

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Inlet and outlet nozzles

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Air release and drainage systems

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Manways for inspection, media replacement, and maintenance

This multi-layer approach ensures progressive filtration, where coarse particles are trapped in the top layer, and finer particles are captured in the lower layers, achieving high turbidity removal and long media life.

Types of Multimedia Filter Vessels

1. Single-Stage Multimedia Filter

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Standard design with three to four layers of media

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Effective for general water treatment and industrial applications

2. Dual-Stage or Multi-Stage Filter

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Multiple filter vessels in series for enhanced filtration efficiency

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Suitable for high-purity water or complex wastewater streams

3. Pressure Multimedia Filter

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Operates under controlled pressure to increase filtration rate

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Suitable for high-flow industrial applications

4. Backwash Multimedia Filter

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Equipped with manual or automatic backwash system

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Prevents clogging and extends media life

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Ideal for continuous operation in industrial plants

5. Customized Industrial Multimedia Filter

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Tailored design for chemical, petrochemical, pharmaceutical, and power plant applications

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Optimized vessel size, media layering, and flow rate for process-specific requirements

Key Features of Our Multimedia Filter Vessels

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High Filtration Efficiency

Optimized multi-layer media for progressive filtration
Removes suspended solids, turbidity, and color effectively
Long media life with minimal maintenance and low backwash frequency

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Robust Mechanical Design

ASME Section VIII Div.1 compliant
TEMA, API, and PED standards adherence
Cylindrical vessel design with wind, seismic, and thermal stress analysis
Reinforced nozzles, manways, and support structures

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Wide Material Selection

Carbon Steel

SA516 Gr.60/70, SA106 Gr.B

Stainless Steel

SS304/304L, SS316/316L

Duplex / Super Duplex

Stainless Steel

Nickel Alloys

Inconel, Hastelloy, Alloy 20

Special Construction

Lined or coated construction for corrosive or abrasive service

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Easy Maintenance & Inspection

Removable and replaceable media
Multiple manways for inspection
Lifting lugs and external supports for safe handling

Design & Engineering Considerations

Process Design

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Flow rate, media depth, and retention time optimization

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Multi-layer media selection for particle size distribution

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Pressure drop and backwash frequency calculation

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Multi-stage filtration for high-purity water or industrial requirements

Mechanical Design

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Pressure vessel design per ASME Section VIII Div.1

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Wind, seismic, and thermal load analysis

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Support design (skirt, leg, or saddle)

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Nozzle reinforcement, flanges, and manway design

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Compliance with PED, NACE MR0175, and international codes

Operational Parameters

4-20 bar

Design Pressure

5-80°C

Design Temperature

0.3-3 m

Diameter Range

1-6 m

Height Range

All parameters customizable to project-specific requirements

Applications

🏭 Industrial Water Treatment

Removal of suspended solids

Silt, turbidity and particulate matter

Cooling tower & boiler feed water

Purification systems

Pre-treatment for RO systems

Membrane filtration protection

⚗️ Chemical & Petrochemical

Clarification of process water

Industrial water treatment

Protection of equipment

Sensitive downstream equipment

Chemical & solvent filtration

Industrial chemical processing

🌿 Environmental & Wastewater Treatment

Municipal & industrial wastewater

Clarification systems

Effluent treatment

Before discharge or reuse

Sediment removal

Particulate matter filtration

🍎 Food, Beverage & Pharmaceutical

Purification of process water

For manufacturing processes

Equipment protection

Sensitive manufacturing equipment

High-quality water standards

For beverages and pharmaceuticals

Quality Assurance & Testing

All multimedia filter vessels undergo strict QA/QC:

Hydrostatic

& Pneumatic Testing

Radiographic

Testing (RT)

Ultrasonic

Testing (UT)

Dye Penetrant

Inspection

Magnetic Particle

Inspection

Weld Inspection

& Support Validation

Material

Traceability (MTC)

Third-Party

Inspection (TPI)

Third-Party Inspection Agencies:

TUV BV Lloyds DNV SGS

Optional Features & Packages

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Skid-Mounted Design

Complete systems on ready-to-install skids or free-standing units

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Multi-Layer Media

Enhanced filtration with optimized media layering

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Automated Systems

Automatic backwash or cleaning systems

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Instrumentation Ports

For level, pressure, and flow monitoring

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External Protection

Insulation and corrosion protection systems

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Protective Coatings

Anti-fouling and anti-corrosion coatings

Why Choose NORDSTONE?

20+

Years of Expertise

In industrial filtration and separation vessels

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Advanced Design Capabilities

Process simulation and mechanical design optimization

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ASME-Certified Fabrication

Global compliance for international projects

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Custom-Engineered Solutions

For water, wastewater, and chemical filtration applications

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Complete Documentation Support

Full QA/QC and third-party inspection support

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Proven Reliability

In chemical, petrochemical, environmental, power, and industrial sectors

Multimedia Filter – Filtration & Separation Vessels