PWL - Model ABZ -Drum Filter System

Consumption-optimized washing processes focus on water consumption and primary energy. With reduced fresh water input, problems with fluff or other dirt can accumulate. The ABZ fluff filter makes optimization possible in the first place, because reusing the various water flows in a washing process (liquor overflow, press water, etc.) requires efficient fluff filtration in the laundry.

When the waste water from a laundry is discharged into the sewage system, compliance with various limit values with regard to COD, temperature, heavy metals, etc. is often officially prescribed. With waste water filtration from ABZ in combination with the ABZ heat exchanger system, not only are the imposed limit values met, but heat energy that is supposedly lost is also recovered.

When using the ABZ fluff filter in textile care, the liquid to be cleaned is fed to the rotating filter drum via a centrically arranged inlet part, flows under atmospheric conditions through the filter fabric and is returned to the process cycle or drained into the sewage system. The existing solid particles that are larger than the nominal mesh size of the fabric are held back - a filter cake builds up. As a result, the depth filtration effect is used, which enables significantly smaller particles to be separated than the nominal mesh size specifies. The cake adhering to the filter fabric is slowly conveyed upwards and dewatered by the rotary movement of the drum.

The warm waste water is fed into a tank and passed through a weir construction. The weirs arranged in cascades reduce the flow rate of the waste water and ensure an optimal distribution of the heat energy in the entire exchanger section. The cold water to be heated is fed countercurrently through a selectable number of tube bundles, which are mounted countersunk in the tank.

• high residence time of the waste water
• Energy recovery even with shock loads
• extremely large exchanger surface due to tube bundle system

• Improve quality:
  By using our ABZ fluff filters in textile care, you ensure complete retention of fluff and hair.
• COD reduction:
  sustainably reduce the COD load in the waste water.
• Improve indoor air:
  Minimize the dust pollution in the entire company building and thus ensure a significantly more pleasant and healthier indoor air for everyone involved.
• Water Usage:
  Reduce your water usage with higher recovery rates.
• Heavy metals:
  Reduce heavy metal pollution in wastewater.
• Heat exchanger protection:
  Highly efficient filtration of the exchange medium ensures optimized heat transfer.
• Wastewater filtration:
  reliable wastewater filtration and filter cake dewatering
• Personnel deployment:
  Reduce the personnel deployment through the fully automatic ABZ filtration and save money in this way.

Innovation and experience for efficient solutions in textile care

Our ABZ drum filter is the ideal solution for efficient lint filtration in laundry and textile care. In our product video you can get an idea of how it does its job step by step in a large laundry.

Water recycling, saving energy, increasing the efficiency of heat exchangers, saving chemicals, waste water treatment and ultimately the increasing quality requirements for your starting products are your daily business. Highly efficient fiber, fluff and sand separation is a key to your success today and in the future.

The following picture gallery should give you a first impression of our ABZ drum filters. For example, it can be clearly seen how the loose fluff that was transported with the laundry is caught and removed. Since the fluff is removed here in advance, the quality of the laundry is improved on the one hand and the fine dust pollution in the premises is reduced by a considerable amount on the other.

All systems and machines from PWL are created on the basis of our comprehensive know-how in numerous industrial sectors and in municipal sewage treatment plants. Of course, this also applies to effective fluff filtration in the laundry. In order to be able to help our customers to achieve maximum benefit and the best possible solution, we adapt the design of the machines in many applications if necessary and configure them in such a way that they meet the respective individual operating conditions. The basic building blocks of our services are always the selection of the appropriate process technology for the separation process as well as possible further treatment and recycling of the accepted materials used. We work with our self-imposed high quality standards both in the procurement and in the production of the solutions we offer in the field of mechanical wastewater treatment. Be it products for water treatment in the laundry, sewer cleaning or in connection with screenings presses for sewage treatment plants - to name just a few examples.