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Stationary ion exchange
units SE (selective)
Stationary
selective ion exchange system SE 1465 – SE 3072
Download brochure
ion exchange unit
(pdf, 1546 kB)
Decker selective ion exchange
units are stationary systems for the removal of ionogenic heavy metals
- compliance
with the prescribed limit values for ionogenic heavy metals such as
copper, nickel, zinc, lead, cadmium etc.
- easy to use
- automatic
regeneration after manual release
- no blockings
of the resins due to the automatic backwashing program
- easy to
maintain and robust due to chemical resistant steel tanks with
nozzle floor and maintenance flanges

Figure: Decker selective ion exchange type SE
Capacity:
25 – 30 g metal / litre resin (mono-Na-form) or
15 – 20 g metal / litre resin (Ca-form)
Operating pH-range: 3-9, ideal range: 6-7
Metal loadings in waste water can be reduced to < 0.1 ppm (Me2+)

Figure: Decker selective ion exchange
engeneering drawing

Figure:
Removal of heavy metals from procedures of hydroxide precipitation with
Lewatit TP 207; Source: Lanxess
Usually both tanks are connected in series. This
means the water to be treated passes through two filter cartridges.
If a breakthrough of heavy metals is detected after the first cartridge,
regeneration for this one cartridge will be initiated.
During regeneration the waste water to be treated passes through the
2nd, less loaded cartridge.
Regeneration proceeds in three automatic steps
- backwashing of the filter cartridge
- regeneration with acid
- conditioning into the mono-Na-form with
sodium hydroxide solution
After having completed the regeneration the
fresh regenerated cartridge will now operate downstream to the other
working cartridge. Thus the waste water will pass again through two
cartridges which are connected in series.

Figure: breakout graphs for Copper,
Nickel, Zinc, Plumbum and Cadmium with Lewatit TP 207; Source: Lanxess
Technical data
Type |
Flow rate m3/h |
Specific
loading |
Resin per
cartridge |
Consumption of
chemicals |
Dimensions
|
30 % HCl |
30 % NaOH |
width x depth
x height in mm |
SE 1465 |
0,9 – 1,8 |
10 - 20 BV/h |
90 Liter |
37 Liter |
9,8 Liter |
2200 x
1100
x 2000 |
SE 1865 |
1,8 – 3,6 |
10 - 20 BV/h |
180 Liter |
65 Liter |
17,4 Liter |
2200 x
1100
x 2000 |
SE 2469 |
2,5 – 5,0 |
10 - 20 BV/h |
250 Liter |
101 Liter |
27,3 Liter |
2400 x
1200
x 2200 |
SE 3072 |
4,5 – 9,0 |
10 - 20 BV/h |
450 Liter |
202 Liter |
54,6 Liter |
2400 x
1200 x 2200 |
see
also: Example
of use: recycling of Nickel / Copper
Download brochure
ion exchange unit
(pdf, 1546 kB)
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