Operating Principle - Hansgrohe Pontos AquaCycle 900 Instrucciones De Servicio

Operating principle

Process operating principle
The water recycling facility works with an auto-
matic, biological-mechanical process. It com-
prises four phases with seven functions.
Phase 1: Prefiltration
1. Filtration with automatic backflushing
The grey water is filtered and then flows
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into the facility. Filtration prevents larger
wastewater ingredients such as hair, textile
fluff etc. from getting into the facility. In ad-
dition, it reduces the contamination for the
biological treatment.
Wastewater ingredients can by-and-by clog
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the filter. The filter is automatically flushed
from above via a nozzle. The arising
wastewater flows directly into the sewage
system.
Phase 2: Pre-recycling (stage 1)
Phase 3: Main recycling (stage 2)
2. Biological treatment (phase 2 + 3)
In the first stage (pre-recycling chamber) the
water is pretreated. After a treatment time of
several hours (factory setting approx. 3 hours)
it is pumped into the second stage (main recy-
cling chamber) for further treatment. In both
stages, the water is biologically treated while
adding atmospheric oxygen. During this proc-
ess, natural biological cultures (microorgan-
isms) settle on special free floating substrate.
They perform the actual water treatment.
Treatment is controlled automatically, i.e. at
regular intervals (factory setting approx. 3
hours) the water is pumped from stage 1 to
stage 2 or via the UV sanitation to stage 3.
Breaking-in phase:
During the first operating weeks, the microor-
ganisms develop and propagate of their own. It
is not necessary to separately inoculate the
substrate with microorganisms for this purpose.
During the first two weeks, the system dis-
charges the treated grey water through the
overflow of the main recycling chamber into the
sewage system. During this breaking-in phase,
the consumers are supplied via the automatic
drinking water backfeed. After the breaking-in
phase (factory setting 14 days), the system
control automatically switches to recycling op-
eration.
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Operating instructions AquaCycle 900
3. Automatic sediment extraction
The biological treatment gives rise to organic
sediments, which settle in stage 1 and 2. These
are automatically extracted at regular intervals
(factory setting 4 days) and discharged into the
sewage system.
Phase 4: UV sanitation (stage 3)
4. Sanitation
The water is sanitised by means of a UV lamp
while it is being pumped from stage 2 to stage
3 (service water chamber). The UV light of the
UV lamp affects the cell nuclei of any germs
contained in the water. This technology is also
used in drinking water treatment. After this
treatment, the water is available as hygienically
safe, odourless, storable service water for fur-
ther use.
5. Pressure increase
The built-in pressure pump makes the service
water available for tapping. The pump is acti-
vated by a pressure switch with protection
against dry running as soon as a consumer,
e.g. the toilet flush, is used. The pressure pump
also supplies the filter backflushing.
6. Backfeed
If an insufficient amount of service water is
available, a defined amount of drinking water is
automatically fed via a free outlet according to
DIN 1988. The water is fed if the minimum level
has been reached in stage 3. It is possible that
the backfeed is activated several times until it is
possible to once more fill stage 3 from stage 2.
We recommend to fit a strainer screen in the
drinking water backfeed line that protects the
solenoid valve.
7. Connection to the sewage system
The overflow is connected to the sewage sys-
tem via a drain trap (e.g. syphon - not included
in the scope of supply). The sediments and the
filter backflush water discharge via this over-
flow. Sediments and solids from the filter are
thus taken directly into the sewage system.
If more water arises then the facility is able to
hold, the excess water flows through the over-
flow directly into the sewage system.
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