HygroMatik WL-RO-170, Руководство пользователя

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4. System description
4.1 Principle of osmosis/reverse osmosis
Osmosis
Osmosis is a natural process in which water from a solution with
low salt concentration passes through a semi-permeable mem-
brane into a solution with a higher salt concentration.
Reverse osmosis
In reverse osmosis, the natural process of osmosis is reversed
using pressure. If pressure is exerted on the side with higher
concentration than the natural osmotic pressure, pure water
from the solution diffuses through the semi-permeable mem-
brane.
The pure water generated by a reverse osmosis system is
referred to as "permeate", the concentrated solution as "concen-
trate".
Fig. 1: Principle of osmosis/reverse osmosis
Concentrate recycling
To increase the flow through the membrane, part of the concen-
trate is returned to the raw water inlet.
4.2 Overview of components
System separator
The system separator prevents water from the water treatment
plant from flowing back into the drinking water network or being
pressurised back or sucked back (protection up to and including
fluid category 4 according to DIN EN 1717).
A dirt trap is integrated into the system separator. Particles from
the untreated water are caught here.
Inflow
Concentrate
Permeate High pressure
pump Raw water