الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Alexandria as a coastal city has a combined sewer system that is
designed to collect domestic sewage, rainwater runoff and industrial
wastewater in the same pipe. Most of the time, combined sewer
systems transport all of their wastewater to a sewage treatment
plant, where it is treated and then discharged to a water body.
During periods of heavy rainfall, however, the wastewater volume
in a combined sewer system may exceed the capacity of the sewer
system or treatment plant. For this reason, combined sewer systems
are designed to overflow occasionally and discharge excess
wastewater directly to the nearby streams, lakes, or other water
bodies. Combining all kinds of wastewaters and occasionally
stormwater, in addition, leads to a highly complex mixture of a wide
variety of pollutants, heavily in composition and concentration. This
mixture affects both collection systems and treatment plants, in turn;
the effective removal of the pollutants becomes very difficult and
more expensive depending on the require quality of treated
wastewater. The stormwater pollution problem has two main
components: a) the increased volume and rate of runoff from
impervious surfaces. b) the concentration of pollutants in the runoff.
On other hand, the pounding action of the rain destroys the asphalt
structure causing erosion which increases water seepage and the
potential of soil settlement resulting in serious damage to other
utilities. The aim of this study is how the collected stormwater can
be reused in a beneficial manner as commercial nurseries, golf
course, landscape irrigation, Sod farms or recharge of ground water
aquifers (by special infiltration facilities). In this case, reused
stormwater provides double benefits reducing the effects of peak
stormwater runoff and pollution on wastewater system, and
reducing water demand to face water scarcity in Alexandria.
Storm water reuse in urban areas is often inhibited by the lack of a
dual collection system and its quality. This research is focused on
studying and managing stormwater to reduce on site runoff, control
flood and pollutants which are carried with the drainage from