Decker Verfahrenstechnik GmbH

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Ion exchange system with external regeneration KR 30 250 (Recirculation systems)

Company profile


Ion exchange system external regeneration

Type KR (recirculation systems)

Type SE (selective)

Ion exchange system

Type KR (recirculation systems)

Type SE (selective)

Type SE with recycling

Filter units

multi-layer filter FNS

High performance filter DF1

Demineralisation systems

 Demineralisation cartridges

Reverse osmosis units

Demineralisation plants

Ion exchange resin
Waste-water treatment
Synthetic material
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Ion exchange system with external regeneration

Download brochure ion exchange unit (pdf, 1546 kB)

For our water treatment installations we offer ion exchange cartridges with fillings from 10 litres resin up to 250 litres resin.

With our service regeneration we offer an economy-priced, fully developed technology. A 2-shift operated recirculation system with a flow rate of 1.5 m/h saves expenses for fresh water of approx. 30,000 per year.

The ion exchange systems are used for

The transportation of the ion exchange cartridges to our central regeneration plant in D-92348 Berg can be carried out by our pick-up / delivery service or by a forwarding agency. For this we offer special transportation boxes.

Decker Ionenaustauscher GFK
Figure: Decker ion exchange units


Selektivionenaustauscher GFK Decker Selektivionenaustauscher GFK Decker Selektivionenaustauscher GFK Decker Selektivionenaustauscher GFK
Figure: Decker ion exchange units


Type Flow rate m3/h Resin per cartridge Resin per unit Dimensions width x depth x height in mm
KR 2x30 0,6 - 1,2 m/h 30 L 60 L 1000 x 400 x 1400
KR 4x30 1,2 - 2,4 m/h 30 L 120 L 1600 x 400 x 1400
KR 6x30 1,8 - 3,6 m/h 30 L 180 L 2200 x 400 x 1400
KR 2x50 1,0 - 2,0 m/h 50 L 100 L 1200 x 400 x 1700
KR 4x50 2,0 - 4,0 m/h 50 L 200 L 1700 x 400 x 1700
KR 6x50 3,0 - 6,0 m/h 50 L 250 L 2400 x 400 x 1700
KR 2x90 1,8 - 3,6 m/h 90 L 180 L 1200 x 800 x 2000
KR 2x180 3,6 - 7,2 m/h 180 L 360 L 1200 x 1000 x 2000
KR 2x250 5,0 - 10,0 m/h 250 L 500 L 1200 x 1000 x 2000

Recirculation systems

  • reduce the demand of fresh water

  • avoid waste-water

  • are easy to handle

  • are applicable up to 70C

Applications of recirculation systems

Circulation of rinsing water

  • Immediate reduction of water in the waste-water treatment unit.

  • The waste-water treatment unit will be kept clear of critical substances if rinses with complexing agents, cyanidic or chromate loaded water are circulated

  • Recirculation systems improve the quality of rinsing water

  • The reduction of expenses for fresh water will almost completely bear or even exceed the expenses for regeneration.

Circulation of the last rinse in a sequence up to 70C

  • considerable reduction of energy costs as the rinse water doesnt have to be heated all the time

  • a combination of activated carbon, cation exchange and anion exchange produces pure water of high quality (conductivity < 1 (Achtung kleiner/gleich) S/cm) and allows for stain-free drying.

Circulation of pure water < 0.1 S/cm

  • our regeneration service realise an economic circulation of pure water

  • because of the minimal loading of the ion exchange resins the installations have a long operating time

Circulation of rinsing water loaded with precious metals

  • complete reclaim of precious metals (Au, Pd, Pt, Ag) from rinsing water

  • expenses for regeneration are considerably lower than the credits for the precious metals

  • smaller companies may be able to do completely without a waste-water treatment unit.

Figure: desalinisation of galvanical rinse water (recirculation), source: Lanxess

Example of use:

Bath sequence (nickel coating), degreasing-static rinse-flow rinse-pickling-nickel bath-static rinse-flow rinse

Due to the demineralisation of the rinsing water 2 cartridges with 30 litres resin each are loaded per week

Anwendungsbeispiel Decker Ionenaustauscher bei Splwssern
Figure: Example of use Decker ion exchange unit on rinse water

Technical Data

Resin: 30-150 litres per cartridge
Capacity: 40-400 eq/cartridge
Flow rate: 500 10,000 litres/h
Max. pressure: 6 bar
Temperature range: 5-70C


  • Inliner made of polyethylene with glass-fibre reinforced epoxy resin

  • Polyester resin or vinyl ester resin

  • Distribution system made of polypropylene

The continuous function of the Decker ion exchange units is backed by the regeneration of loaded ion exchange cartidges.

Download brochure ion exchange unit (pdf, 1546 kB)


Decker Verfahrenstechnik GmbH
Bruckaecker 12, 92348 Berg/Opf., Germany
Web: E-Mail:
Phone: +49 (0)9189/4410-0 Fax: +49 (0)9189/4410-20

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