Environmental Engineering Reference
In-Depth Information
Fig. 3 Biofiltration systems (left) and artificial wetland (right) in Lynbrook Estate (Source wsud.
org; Brown and Clarke
2007
)
and is led to the main entrance boulevard though a perforated PVC pipe located
at the base of the trench.
The same bio
pipe) is con-
structed through the median strip of Lynbrook Boulevard (Fig.
3
), where the
catchment run-off is also collected,
ltration system (grass swales
—
gravel
trench
—
filtered and treated.
Treated stormwater inside the bio
ltration system of the Boulevard is conveyed
to a constructed wetland (Fig.
3
), where it is secondary treated prior to
nal
discharge in the ornamental lake.
2.2 What Were the Challenges?
The key challenges and impediments encountered were mainly due to the inno-
vative nature of the project compared to the conventional and tested stormwater
management practices in developing green
field areas (Farrelly and Davis
2009
).
The main challenges involved:
Lack of knowledge and familiarity with new unconventional sustainable tech-
nologies and related scepticism within the local government hampering the
progress of the project.
Raised concerns related to the overall cost of the proposed new technologies
mainly regarding a possible failure.
Limited evidence/data of similar tested experiences to smooth concerns and
inspire con
dence.
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