Decker Verfahrenstechnik GmbH

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Selective ion exchange system with external regeneration SE 30 250 for water treatment

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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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Selective Ionexchange system with external regeneration

Download brochure ion exchange unit (pdf, 1546 kB)


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

With our service regeneration we offer an economic-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


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


Type Flow rate m/h Resin per cartridge Resin per unit Dimensions width x depth x height in mm
SE 2x30 0,6 - 1,2 m/h 30 L 60 L 1000 x 400 x 1400
SE 4x30 1,2 - 2,4 m/h 30 L 120 L 1600 x 400 x 1400
SE 6x30 1,8 - 3,6 m/h 30 L 180 L 2200 x 400 x 1400
SE 2x50 1,0 - 2,0 m/h 50 L 100 L 1200 x 400 x 1700
SE 4x50 2,0 - 4,0 m/h 50 L 200 L 1700 x 400 x 1700
SE 6x50 3,0 - 6,0 m/h 50 L 300 L 2400 x 400 x 1700
SE 2x90 1,8 - 3,6 m/h 90 L 180 L 1200 x 800 x 2000
SE 2x180 3,6 - 7,2 m/h 180 L 360 L 1200 x 1000 x 2000
SE 2x250 5,0 - 10,0 m/h 250 L 500 L 1200 x 1000 x 2000

Selective unit

  • complying with limit values

  • reclaim of metals

  • easy to handle

Application of selective ion exchange units

  • selective removal of heavy metals such as copper, nickel, zinc, lead, cobalt, cadmium, mercury, chrome, etc downstream to waste-water treatment units, ultra- and micro-filtration units, heavy-metal loaded rinses.

  • Selective removal of heavy metals or Cyanides in groundwater remediation

  • Reclaim of precious metals such as Gold, Palladium, Platinum


The rinsing or waste water is fed into a storage tank. A level controlled pump delivers the rinsing or waste water over a filter (e.g. multi-layer filter), a non-return valve and a flow meter through the ion exchange cartridges.
After having removed loaded ion exchange cartridges ion exchange the security cartridges move up and fresh regenerated cartridges are added at the end of the sequence.

Figure: Decker ion exchange engeneering drawing

Example of use: Subsequent cleaning to remove the rest of solid and dissolved metals

Example: Waste water: 10 m/day
Concentration of dissolved metals: 4 mg/l Ni, 3 mg/l Cu, 1 mg/l Cd

With a selective ion exchange unit with selective resin waste water values of each 0.1 mg/l can be reached. A cartridge with 30 litres of selective resin is loaded after approx. 125 m waste water = 2.5 weeks until regeneration.

Anwendungsbeispiel selektive Restmetallentfernung
Figure: Example of use selective residual-metal elimination

Technical Data

Resin: 30-250 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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