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Rainwater management
Next Generation Infiltration Unit for smaller building sites
Modern rainwater management has a range of benefits from both ecological
and economic viewpoints. The Dutch company Elwa, part of the Wavin
group, has deloped a technique of using percolation hollow bodies made
of plastic for rain water percolation. This technique requires
considerably less space than any other methods.
Firstly, it is well-known that rainwater is not waste water, and so it
does not belong in the sewage system. On the contrary, it is more and
more often usefully used for various applications such as for washing
water or for flushing toilets. It is stored in reservoirs for this
purpose.Any surplus water fed back into the house piping system by
suitable pumping equipment flows into percolation units, which ensures
that the natural groundwater renewal rate is either retained or
re-established.There are, however, many other advantages: the existing
sewage system is subject to less loading if rainwater is not added,
sewage treatment works are conserved and small decentralised units are
also additionally useful for flood protection.
Well-known supplier
Ideally seen, rainwater management is a combination of rainwater
usage and rainwater percolation. The Dutch company Wavin has become a
well-known name in the rain water management field, particularly since
the integration of ELWA in the group. Wavin offers technologies, ranging
from the collection of rainwater through pipework, reservoirs, storage
and percolation right up to the incorporation of rainwater concepts in
modern heating technology.
Hollow bodies
The technique of using percolation hollow bodies made of plastic for
rain water percolation has a decisive advantage: considerably less space
is required than for other methods. This makes rainwater usage possible
even on smaller building plots.Wavin now announces a new percolation
hollow body with the trade name “Wavin Q-Bic”. The complex PP module of
dimensions 1200 x 600 x 600 mm has a gross volume of 432 litres and is
designed for traffic loading of up to SLW 60 at 0.8 m earth coverage.
Built-in manhole
According to the manufacturer’s information, it is the first
integrated system with built-in manhole function and optimised camera
and distribution tunnel (soft-glide system). This allows the
construction of percolation reservoirs of any size. The special thing
about this unit is that it is now even easier to inspect and clean.
There is, however, even more: a remarkable service package is available
in addition to the wide range of Wavin Q-Bic accessories, which ranges
from no-cost building consultation through sizing calculations following
national requirements up to the provision of a calculation programme .
To emphasise things once again: the natural condition of groundwater
renewal is retained or re-established at its natural condition before
commencement of building, <<
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