Sludge Dewatering Bag 1.25 m³ – F-BAG XXL (Gravity Filter Bag)

Mobile Sludge Dewatering for High Volume Flows

The WINKLER sludge dewatering bag F-BAG XXL (1.25 m³) is the high-performance solution for reliably separating solids and liquids in industrial wastewater. As a gravity filter bag, it needs no electricity, no pump technology and no maintenance – ideal for businesses that need to dewater large sludge volumes quickly and cost-effectively.

The F-BAG XXL is built for demanding B2B use: robust filter material, secure lifting loops and high dewatering performance keep processes running stably and protect downstream systems from clogging.

Typical Applications

The filter bag is particularly well suited to applications where sludge is dewatered directly on site – mobile, straightforward and efficient:

• Wash bays (cars, commercial vehicles, train/high-speed rail wash systems)
• Concrete processing and concrete plants (saw/grinding water, drilling/flushing water)
• Recycling operations (rubble, metal, plastic, process water)
• Industrial wastewater and production processes (pre-filtration, sludge separation)

Wherever enormous volumes occur, this filter bag is at home in leading industries. That includes raw material processing in chemicals, large-scale projects in civil engineering and landscaping, and intensive processes in transport & logistics. It's also the most powerful option in construction, agriculture and industrial water treatment for energy & the environment.

How It Works: Gravity Filtration in Practice

Use is deliberately kept simple, suiting sites that change frequently:

1. The contaminated water/sludge-water mix is fed into the filter bag (e.g. from a container, channel or via pump).
2. Solids are retained in the filter material while water drains off in a controlled way.
3. Once dewatered, the bag is removed and the sludge disposed of properly.

Thanks to its large usable volume of 1.25 m³ and generous filter area, the F-BAG XXL is particularly well suited to large batches and continuously generated sludge.

Your Benefits for B2B Use

The F-BAG XXL combines high capacity with industrial-grade robustness. That makes it a reliable solution when dewatering needs to be plannable and dependable – even under changing conditions.

• High capacity: 1.25 m³ usable volume for large volume flows.
• Industrial quality: Robust build for demanding sludge.
• Chemically resistant: Suited to a wide range of industrial process waters (resistant to acids and alkalis).
• Efficient dewatering: High water permeability for short process times.
• Safe handling: Reinforced straps with a 280 mm overhang for easy recovery and transport.

Which Filter Bag Is Right for You? F-BAG Series Size Comparison

The right size depends mainly on your sludge volume, batch size and site conditions. This comparison helps you quickly identify the right filter bag variant:

Alongside standard sizes, custom-made filter bags are also available. Bespoke sizes are especially well suited to existing plant or special installation situations where standard dimensions don't fit.

WINKLER F-BAG XXL Filter Bag: Technical Details

Advice From Our Filtration Specialists

Planning industrial-scale dewatering with the F-BAG XXL? Our filtration specialists can help with the technical sizing, ensuring reliable, cost-effective solids separation even at maximum load ratings.