innovative rainwater harvesting
Rainwater is part of the never-ending Water Cycle.
Between the seas, clouds, rain, hail, snow and the system of streams and rivers no drop gets lost and no new drop is made.
Nevertheless, saving fresh
and drinking water makes sense
from both an economic and
an environmental viewpoint.
It is part of our drive towards
a sustainable society.
Water may seem to flow
endlessly from our taps, but
its delivery and purification
requires more and more
energy and effort.
Drinking water is our most
important food. The average
Australian household uses
around 270,000 litres of water
a year, but as little 5% of it
is used for preparation of food
and drinks and at the kitchen
sink.
For many uses we don't need
high quality drinking water.
For toilet flushing, washing
machines, for cleaning and
garden watering you can safely
use rainwater, with the help of
the right rainwater equipment,
properly installed.
Half of the drinking water
used can be saved without
any reduction in hygiene and
comfort.
Other benefits of using rainwater:
- More efficient washing, saving up to 50% on washing powder.
- Washing machines don't become furred up with lime.
- No lime scale/salt build up in toilets and urinals.
- There is no better water for your garden and plant irrigation
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clean water - our mission!
1. Cleaning step
» Filter
 The first cleaning step in the rainwater system is
the filter. The rainwater flows from the roof to the
filter. Here dirt particles and debris are separated
from the water. The cleaned water flows to the tank.
The dirt is washed to the stormwater pipe or soakaway with a
small amount of rainwater. All 3P rainwater filters
have stainless steel inserts, which are easy to remove
and easy to clean. Their many different working
principles and connection possibilities allow for
their use in many different installation situations.
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2. Cleaning step
» Calmed Inlet
 By using an underground tank, the water is stored in
dark and cool conditions. Here the second cleaning
step takes place. In the water column, any fine
residual particles settle to the bottom of the tank.
The rainwater Calmed Inlet prevents any disturbance
of this sedimentation layer. At the same time the
Calmed Inlet ensures that oxygenated water is
introduced to the lower layers of the stored water in
the tank. This oxygen rich water prevents anaerobic
reducing conditions forming in the storage tank
and ensures that the water stays fresh.
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3. Cleaning step
» Overflow siphon
 Any particles that are lighter than water
(e.g. flower pollen) float slowly to the water surface.
The expertly designed 3P Overflow Siphon, with
a skimmer effect, removes this floating layer.
The regular overflow from the storage tank is
important to get the optimum water quality.
It prevents souring of the water. The floating layer
could otherwise build up over time, and so reduce
oxygen diffusion at the water surface, which in turn
could lead to anaerobic reducing conditions in the tank.
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4. Cleaning step
» Floating Pump Intake
 The 3P Pump Intake floats at all times,
suspended just below the water surface
where the cleanest water lies.
From this position the water is abstracted
by the pump.
A ball float, filled with air, suspends the intake,
which has a further filter and a check valve.
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