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4.6 Brine dosing station
The brine is dosed with digital dosing pumps. To ensure reliable
brine dosing, the dosing station comprises a duty pump and a
standby pump. Pulsation dampers ensure low pulsation. As the
counterpressure of the Selcoperm electrolyser is too low, the
brine dosing station contains a pressure loading valve. Pressure
relief valves ensure safe operation in case the pressure limit is
exceeded.
The dosing station is controlled via the touchscreen on the
Selcoperm electrolyser. A Flow Monitor is installed on each pump
to monitor the dosing process. Errors in the dosing process are
displayed on the touchscreen of the Selcoperm electrolyser.
The Selcoperm electrolyser provides the brine dosing station with
the supply voltage and the control current.
4.6.1 Components
Fig. 14
Brine dosing station
4.7 Water softener
The water softener provides the softened mains water required
for the electrolysis.
The water softener is equipped with a dual head and two
cylinders to ensure a constant soft-water supply even during
regeneration. A stand-alone brine tank provides the brine needed
for regeneration. A pipe installation set, a bypass valve and a
filter with manual backwash function are delivered with each
water softener.
The water softener can be delivered pre-assembled on a skid or
without skid.
Fig. 15
Water softener
4.8 Chiller
If the required soft water temperature cannot be met, a chiller can
be used to cool the soft water down. The chiller is placed between
the water softener and the Selcoperm electrolyser. The softened
water entering the chiller must comply with the recommended soft
water quality. See section
5.1 Selcoperm Electrolysis System
. The chiller must be designed according to the local
system requirements and must be controlled via a separate
control panel.
4.9 Heater
If the required soft water temperature cannot be met, a heater
can be used to warm the soft water up. The heater is placed
between the water softener and the Selcoperm electrolyser. The
softened water entering the heater must comply with the
recommended soft water quality. See section
. The heater must be designed
according to the local system requirements and must be
controlled via a separate control panel.
4.10 Brine tank
The brine tank is used for preparation and storage of brine.
4.11 Acid cleaning station
The acid cleaning station is pre-assembled on a trolley for acid
cleaning of the electrodes. Acid cleaning shouldn’t be required
more often than every two years during maintenance, unless
there is a softening fault, or the quality of the used water or salt is
poor.
The Selcoperm electrolyser provides the acid cleaning station
with the supply voltage by means of a special plug. The acid
cleaning station is controlled via the touchscreen on the
Selcoperm electrolyser.
T
M
06
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36
15
Pos. Description
1
Dosing cabinet with sliding doors
2
Pressure pulsation damper
3
Pressure loading valve PLV
4
Pressure relief valve PRV
5
Digital dosing pumps (duty/standby) with Flow Monitor
6
Suction pulsation damper with scale for calibration and
manual vacuum pump for priming
5
1
2
4
3
6
TM
06
22
24
36
15
