Environmental Engineering Reference
In-Depth Information
Teacher's building
To municipal sewage
Gray water
High quality
Black water
Gray water
Overflow
Pretreatment
Scenic water
body
Constructed wetland
Landscape irrigation
FIGURE 19.4
Flow.diagram.of.sustainable.water.system.in.new.campus,.CQU.
system,.receiving.waters,.and.to.wastewater.treatment.plants..Cost-beneits.
will.also.accrue.from.a.reduction.in.water.pollution.and.looding..The.costs.
of.developing.or.retroitting.and.operating.and.maintaining.a.drainage.sys-
tem.are.normally.lower.for.BMPs.than.for.a.traditional.drainage.system,.and.
although.there.is.a.high.land.cost.required.by.wetlands,.the.whole-life.cost.
of.their.maintenance.is.lower.than.for.small.BMPs.requiring.a.high.level.of.
maintenance.
The. reuse. of. water. stored. in. wetlands. contributes. to. Integrated. Urban.
Water.Management.(IUWM).within.the.urban.water.cycle.by.conserving.the.
quality.of.drinking.water.supplies.and.thus.reducing.water.treatment.vol-
umes,.costs.and.energy.consumption..Stormwater.supply.is.intermittent.in.
comparison.to.the.continuous.supply.of.reclaimed.wastewater,.and.the.cost.
of.its.storage.infrastructure.and.overall.costs.are.higher.than.for.reclaimed.
wastewater.. An. aquifer. storage. transfer. and. recovery. (ASTR). program. in.
Australia.will.provide.drinking.water.from.urban.stormwater,.and.several.
cities.globally.are.developing.the.reuse.of.water.stored.in.wetlands.for.the.
irrigation.of.public.parks.
Acknowledgments
We. wish. to. acknowledge. the. support. of. the. EU. FP6. SWITCH. (Sustainable.
Water.Management.Improves.Tomorrow's.Cities'.Health).project.and.thank.
the.Commonwealth.Scientiic.and.Industrial.Research.Organisation.(CSIRO).
for.permission.to.use.Figure.19.3.
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