The continued growth of industrial and residential areas, the
construction of impervious surfaces (paved or cemented) to the detriment
of permeable-draining surfaces associated with the increase of the
meteorological phenomena’s intensity, causes an high-risk situations
both in terms of environmental protection, both for the protection of
water courses, sewers and infrastructure.
The critical situation of many rivers, often inadequate to receive the
urban and suburban stormwater, as well as sewage systems, often mixed,
require accurate choices aimed to control the flow rates and the
treatment of stormwater.
The main objectives are the control of flow rate in order to reduce the
risk of flooding of the receiving water bodies and other flooding of
draining areas, to control the hydraulic disposal of flood peaks during
rainfall events and the pollutant’s removal from stormwater.
The interventions regard the whole process of the water flow of the
draining surfaces or a part of them, defined as
stormwater first
flush. In some case, we have to identify the specific treatment,
if in the presence of paved surfaces, there will be the risk of leaching
of hazardous substances able to cause environmental damages. In any case
we have to consider the separation unit of sands and oils minerals after
sedimentation and / or accelerated de-oiling systems.
In these cases
STA srl offers a wide range of applications with
the goal of providing optimal solutions from a point of view technical,
operational and economic, STA offers
prefabricated unit systems
or specifically designed and manufactured for each case.
STA count on a qualified team of engineers and technical staff
with years of experience in design, development and project management.
STA is able to give preliminary study, the design and construction of:
- Stormwater treatment plants, for paved road surfaces: The
Proposals of STA provide specific units for the separation and
treatment of first rain water (S.MET series 1P) or
continuous separation unit for sands and mineral oils, we apply
the most effective technology as packs/tubulars (S.SEP series
PL) or coalescing filters (S.SEP K series). These
applications can be combined with filtration treatments, heavy
metals removal through ion exchange resins and units specially
designed for the treatment of stormwater from road surfaces.
- Facilities and equipment for storage basin and retention
basins: STA uses the most advanced technologies
available on the market, the most advanced flushing vacuum
systems, in addition to more traditional flushing
washdown systems (tanks overturning or clapper cross) or
dissipation of energy systems (mixing or pumping with hydro
ejector), combined with pumping systems, flow rate control
systems and specific floodgate controlled by level measurement
systems.