The stormwater flows via a scumboard into the system,
From where it flows via two channels into the hydrodynamic separator.
A radial flow regime is generated in the separator. Solids are separated downwards.
The solids are collected in a sludge trap underneath the system that must be sucked off at location-specific intervals.
The water flows upwards through a filter element.
The filter cartridge is easy to replace.
The cleaned water flows via the outlet into the storm sewer or a seepage system.
Video: Operating principle
The Hydrosystem Road Drain combines a hydrodynamic separator with a filter unit in a road drain and is simple to inspect and clean.
The system requires no additional space as it is
directly in the road space. The filter material
is located in a cartridge that is exchanged at intervals
of between 3 and 5 years.
The filter system removes pollutants such as heavy
metals, mineral oil hydrocarbons and polycyclic
hydrocarbons from the stormwater. Apart
from that it binds nutrients such as phosphates. The
combination of solids separator and filter works both
on particles and on dissolved water ingredients.
The treatment plant can be used with traffic areas
such as car parks and roads with all volumes of
Three different filter cartridges are available
for this. Even heavily contaminated stormwater runoffs
can be cleaned to the extent that they can be
discharged into surface waters or the groundwater.
The modular design allows use in virtually all catchment areas.
Internal diameter of the concrete or plastic shaft: > 0.4 m
Rectangular shaft forms are also possible
Depth of the outgoing pipe: > 60 cm
Connectable area: 100 m2 to 400 m2 depending on the degree of treatment level
Maximum flow rate: 15 l/s,
Maximum filtration capacity: 2 l/s
Three different filters are available, different cleaning capacities
General building authority approval from the DIBt, Z-84.2-17