Innovative purification solutions
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From the entry point the feed water is pushed under feed water pressure to an electrical pump
that forces the feed water under high pressure through the membrane. Pump pressure is
monitored in the pressure line to the membrane, while pump motor current is also measured as a
process parameter.
Once the purified water is through the membrane its temperature, electro-conductivity and
flow rate are measured to monitor the quality and quantity which determines the membranes
condition.
A pressure regulator provides the correct back-pressure in the reject stream to reach the nominal
pressure on the membrane. During a flush an additional solenoid valve opens a by-pass channel
which makes it possible to use the full pump pressure. All flushes are automatic but can also be
initiated manually.
All sensors and valves are contained in the measuring and control block that also houses a CPU
that translates pressure and temperature into digital information. From the purification unit the
water is led through the mineral cartridge (optionally) and from the mineral cartridge to the water
faucet. See figure 8 for an explanation of the valve block.
Fig. 8: Valve block
