System Features
10
Purification process and components
3.4
Figure 2: purification diagram
When the system is started in normal operation mode, the
inlet valve
opens and the
reverse
osmosis pump
starts. It will be closed and the pump will be stopped, when the
permeate
tank
is completely full.
The
ProPak-R10
(pretreatment module) is a combination of filtration and adsorption via
highly pure activated carbon. Chemicals like chlorides, insecticides, pesticides, and
herbicides and particles larger than 5 micrometer are detained.
The RO pump increases the pressure for the reverse osmosis process. The
reverse osmosis
module
remove about 98 % of the salt content from the water. Moreover nearly all bacteria,
viruses, heavy metal complexes as well as organic molecules with a molecular weight
higher than 300 daltons are rejected. The purified water is called permeate, the waste reject
water is called concentrate. The concentrate water is rejected to drain via
flow limiter
.
The permeate
conductivity
is monitored with a
sensor
and displayed on the system
monitor
. The measured value is displayed in the unit µS/cm. If the conductivity exceeds a
preset limit, a warning message will be displayed and the permeate will be drained.
The system is connected to a tank with
level control
to regulate the production and tank
filling. When the tank is completely full, the production will be stopped. When the level falls
below the lower limit, the production will be started again and the tank will be filled.
