Rapid development in Malaysia with the construction of new towns may change
the hydrologic and hydraulic characteristics of previously rural catchments.
Flash flood and lower replenishment of groundwater may occur downstream of
the new development areas as a result of increase in impermeable areas.
Bio-Ecological Drainage System (BIOECODS) is an alternative urban stormwater
management approach based on “control-at Source” concepts combining
infiltration, detention storage as well as conveyance to delay flow. The
main feature of BIOECODS is the use of subsurface drainage modules acting as
both stormwater conveyor and attenuation agent. This report contains the
study of drainage modules in order to determine their suitability and
workability as well as to confirm the specifications of these components
under local condition as implemented at the USM Engineering Campus, Nibong
Tebal, Penang. The objectives of this study are:
test the hydraulic capacity of the drainage module
check the water quality improvement capability of the drainage module
results show that the drainage module should be designed as pipe flow and
the resulting turbulence causes the DO level to increase with the distance
as flow travels downstream.