Pioneering Dewatering with HiCon 2.0 and BaglessPlus Technology

InfiltraDiscfilter (IDF) is the pacemaker of dewatering, operating without any filter bags.

Thanks to the latest HiCon 2.0 technology, the consistency limit can be increased significantly. IDF disc filters ensure a reliable and almost maintenance-free operation.

BlueLine Advantages

Higher Runability

The BaglessPlus discs achieve running times of up to 18 years.

Reduced Fiber Loss

The outstanding filtrate quality leads to a long lasting reduction in fiber loss. In particular for save-all applications, high fiber losses due to holes and cracks in the bags can be avoided because no damages of the bags occur.

Lower Maintenance Cost

By using the newly developed BaglessPlus disc filters without filter bags, the time- and cost-intensive replacement of worn-out filter bags can be avoided.

Lower Water Consumption

The sealing technology and the optimized filtrate valves effectively separate fibers from filtrates. Likewise, the outstanding filtrate quality allows savings in the amount of fresh water used.

Benefits of InfiltraDiscfilter

    Water and Fiber Savings

    • Increased cleanliness of water loops
    • Utmost quality of super clear filtrate
    • Replacement of fresh water by filtrate
    • Saves cost in fresh water preparation
    • Fewer solids get lost to effluent treatment

    Excellent Filtrate Quality for Years

    • BaglessPlus segments have a very long lifetime
    • Sealing concept ensures clean filtrates
    • No contamination of superclear filtrate
    • IDF filtrate quality sets the benchmark
    • Large producers rely on BaglessPlus

    Reliable Operation

    • Proven concept for more than 18 years
    • All IDF disc filters equipped with BaglessPlus
    • Most robust disc filter on the market
    • Can withstand harshest conditions
    • Reliable knock off and cleaning
    PP filter bag changing procedure > Omitted with BaglessPlus

    Minimum Maintenance Effort

    • Search for damaged bags is a nuisance
    • Rebagging procedure takes hours
    • BaglessPlus is reliable for years
    • No spare part handling needed with BaglessPlus
    • BaglessPlus is HP cleaning resistant

    Our Solutions

      Leading Dewatering Technology: InfiltraDiscfilter with BaglessPlus Discs

      • 5.7 m (IDF570) and 3.7 m (IDF370) disc diameter possible
      • Up to 24 discs
      • Available with or without HiCon 2.0 technology
      • For fiber recovery and thickening
      • Fiber and vacuum proof sealing design
      • Robust operation with BaglessPlus
      • Based on famous Thune DF design

      BaglessPlus Technology

      • 5.7 m, 3.7 m and other disc diameters
      • Up to 20% more throughput
      • Proven reliability for 18 years
      • Eliminates frequent bag change
      • Leading papermakers rely on BaglessPlus

      HiCon 2.0 Technology

      • Safe guidance of discs in solid rails; eliminates risk of crash
      • Inlet consistencies up to 2% possible
      • Significantly reduced pumping power
      • Up to 20% more throughput
      • HiCon guiding system and BaglessPlus filter discs also available as rebuild kit

      Disc Filter in Tissue Systems

      • Consistent excellence in filtrate quality
      • Water, fiber and chemical savings
      • Long lifetime of tissue machine fabrics
      • Replacement for cloth filter or flotation

      Disc Filter in Recycled Paper Plants

      • Outstanding robustness
      • More capacity to increase production
      • Available with HiCon option
      • Improved yield and less fiber loss

      Saveall Disc Filter

      • 10 to 50 ppm filtrate quality for years
      • Key to reduced fresh water consumption
      • Improves lifetime of paper machine fabrics and felts
      • Can be used for broke thickening

      Rebuild and Upgrade Options

      • Vast portfolio to upgrade many brands
      • Overcome low disc filter capacity
      • Upgrade poor super clear filtrate quality
      • Improve operational reliability
      • Ask for an expert to check your filter

      How to Retain Fibers

      • Replace filter bags with BaglessPlus
      • Avoid felt gaskets
      • Use state-of-the-art sealing concepts
      • Smooth fiber mat formation
      • Always have an eye on your filtrate quality

      Dewatering Basics

        Dewatering Theory

        • Characteristic curves for each furnish
        • Dewatering time disc filter 30-60 s
        • 70% throughput after half the dewatering time
        • +10°C leads to 5-8% more capacity
        • Vacuum has strong influence

        HiCon in Operation

        The features of HiCon technology make it especially suitable for high freeness applications. Due to operation at high inlet consistencies, the filter can fully take advantage of the furnish's good dewatering properties.

        The IDF disc filter can be operated at very high fiber mat thickness and shows an excellent knock off.

        Your Project

          Production Increase

          • A new InfiltraDiscfilter with high surface BaglessPlus discs is the solution for limited dewatering capacity
          • For a system rebuild that calls for additional dewatering capacity, IDF disc filters are most suitable
          • Your fiber recovery system is outdated and filtrates cannot be used in the paper machine? IDF offers great cost reduction 
          • You are planning to install a new paper or tissue machine? Ask for InfiltraDiscfilter, which sets today’s benchmark

          Saving Water and Process Chemicals

          • State-of-the-art specific water consumption goes down to 3.5 l/kg for testliner and tissue production lines
          • Super clear filtrate from IDF disc filter provides an excellent source for fresh water replacement
          • The more fresh water is used the more process chemicals are washed out of the system
          • The benefits of fresh water savings can be significant. Ask for an estimate!

          Environmental, Effluent Treatment and Yield

          • Recover fiber from your effluent streams to save cost of effluent and sludge handling
          • Protect your effluent treatment plant from overload by installing a disc filter
          • Strict environmental legislation: take advantage of cleaner water loops due to excellent filtrate quality
          • Old/inefficient effluent treatment plants may be relieved by installing BaglessPlus technology

          Common Problems and Their Root Causes

          Issue Possible Reason
          Low Production
          • Poor knock off due to plugged nozzles
          • Clogged filter bags
          • Insufficient cleaning of discs
          • Low vacuum
          • Low level in vat
          Poor mat formation
          • Low vacuum
          • Inlet consistency too low
          • Low level in vat
          High solids content in filtrates
          • Broken filter bags
          • Broken filter segments
          • Damaged sealings
          • Sweetener too low
          High motor load
          • High inlet consistency
          • Low filter speed
          • Discs touching chutes



            Check Your Filtrate Quality

            Save All Disc Filter

            My white water
            Cons. (%)

            Thickening Disc Filter

            My inlet to disc filter
            Cons. (%)
            Ash (%)
            My filtrate quality
            Clear cons. (mg/l)
            Superclear cons. (mg/l)
            My filtrate quality
            Clear cons. (mg/l)
            Reduction of solids in filtrate by installing IDF technology *
            *) Given values are indicative, please contact Voith for detailed information

            Please use a decimal comma for typing in numbers.

            Determine Your Washout Rate

            Solids which get lost with discharged water
            Paper production
            Spec. water consumption
            Spec. effluent
            Today's values
            Filtrate consistency (clear or superclear)
            Filtrate to effluent and rejects
            Values with IDF and Bagless technology
            Filtrate consistency* (clear or superclear)
            *) Can be assessed by Check Your Filtrate Quality

            Please use a decimal comma for typing in numbers.
            Reduction of solids content in effluent by
            Fiber which is recoverd by using BaglessPlus and reduction
            of solids to primary effluent treatment
            *) Given values are indicative, please contact Voith for detailed information

            Please use a decimal comma for typing in numbers.

            Flow and Energy Calculator

            Calculation Cost Saving Pumping Energy

            Existing DF HiCon*
            Paper production
            % inlet cons.
            *) Typically 1,1 to 2%

            Please use a decimal comma for typing in numbers.
            Dilution header line
            Pump efficiency
            Power requirement
            Energy cost
            Power Saving
            Annual Cost Saving
            Relative savings
            *) Given values are indicative, please contact Voith for detailed information

            Please use a decimal comma for typing in numbers.

            Calculation Production


            Calculation Flow Velocity

            No of pipes
            Cross section

            Freeness Converter

            °SR value
            ml CSF Value
            *) Given values are indicative and may slightly deviate depending on type of stock

            Please use a decimal comma for typing in numbers.

            Send us your calculated results and your message for customized advice

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              Axel Gommel

              Global Product Manager


              t +49 7321 37 5210


                • InfiltraDiscfilter - Pioneering Dewatering with HiCon 2.0 and BaglessPlus

                  InfiltraDiscfilter - Pioneering Dewatering with HiCon 2.0 and BaglessPlus

                  English German
                • Product portfolio for excellent dewatering performance – Disc filter upgrade

                  Product portfolio for excellent dewatering performance – Disc filter upgrade

                  English German
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