Confined Confined Water Sensitive Urban Design Water Sensitive - - PowerPoint PPT Presentation

Dunphy et al Dunphy et al

Confined Confined Water Sensitive Urban Design Water Sensitive Urban Design Stormwater Filtration/Infiltration Systems Stormwater Filtration/Infiltration Systems for for Australian Conditions Australian Conditions

Alison Dunphy Alison Dunphy

Institute for Water and Environmental Resource Institute for Water and Environmental Resource

Simon Simon Beecham Beecham

Management at Management at the the University of Technology Sydney (UTS) University of Technology Sydney (UTS)

Colin Jones Colin Jones

Kiama Municipal Council Kiama Municipal Council

Anthony Collins Anthony Collins Hornsby Shire Council

Hornsby Shire Council

Mark Liebman Mark Liebman

Storm Consulting Pty. Ltd. Storm Consulting Pty. Ltd.

John Wells John Wells

HydroCon Australasia Pty. Ltd. HydroCon Australasia Pty. Ltd.

Paul Michael Paul Michael

Residual Pty. Ltd. Residual Pty. Ltd.

Dunphy et al Dunphy et al

Acknowledgments Acknowledgments

• Australian Research Council (ARC) for

Australian Research Council (ARC) for project funding via Linkage Project grant project funding via Linkage Project grant (LP (LP – – 0454374) 0454374)

• Rami Haddad and David Hooper

Rami Haddad and David Hooper (Faculty of Engineering, UTS) for (Faculty of Engineering, UTS) for assistance with installation of monitoring assistance with installation of monitoring equipment equipment

Dunphy et al Dunphy et al

Presentation Summary Presentation Summary

• Water Sensitive Urban Design (WSUD)

Water Sensitive Urban Design (WSUD)

• Porous Pipe Stormwater Treatment Systems

Porous Pipe Stormwater Treatment Systems

• Field Sites

Field Sites

• Sampling Protocol

Sampling Protocol

• Sampling Methods

Sampling Methods

• Sample Results

Sample Results

• Conclusions

Conclusions

• Future Work

Future Work

Dunphy et al Dunphy et al

Water Sensitive Urban Design (WSUD) Water Sensitive Urban Design (WSUD)

WSUD has obvious benefits: WSUD has obvious benefits:

• Sustainable approach to

Sustainable approach to managing the urban water cycle managing the urban water cycle

• Minimising impact of

Minimising impact of urbanisation urbanisation

• Treatment and/or harvesting

Treatment and/or harvesting

• f stormwater
• f stormwater
• Provision of alternative water

Provision of alternative water supplies combined with measures supplies combined with measures to reduce potable water usage to reduce potable water usage from municipal supplies from municipal supplies

Dunphy et al Dunphy et al

Porous Pipe Stormwater Porous Pipe Stormwater Treatment System Treatment System

Pre-filtering HydroCon Components Litter / Sediment Trap HydroCon Cyclone Pit HydroCon Pipe Substrate Media Material Maintenance Flushing Pit / Pipe

Collection Pipes or Surrounding Soil / Groundwater

Monitoring / re-use / ground infiltration Filtration

Dunphy et al Dunphy et al Site Location Mills Park Tennis Centre, Asquith Weathertex Industrial Site, Heatherbrae Hindmarsh Park, Kiama Land Use/s car park industrial commercial, residential & parkland Catchment Area (m2) 1600 2185 65000 Filtration Media Gravel / Sand Gravel / Sand / Sand & GAC Sand HydroCon Pipe Diameter (mm) 400 600 400 Length of HydroCon Pipe (m) 100 18 32 Infiltration/Filtration System Infiltration Infiltration Filtration Water Sampling Set-up Inlet: Automatic sampler Outlet: Half-pipe collection pipes Inlet: Automatic sampler Outlet: Half-pipe collection pipes Inlet: Automatic sampler Outlet: Automatic sampler Pre-filtering Litter basket and precast sump pits Litter baskets and a prefiltering cyclone pit Litter baskets and screen Receiving Location of Treated Stormwater Discharge to Ku-ring-gai Chase National Park Tomago Sandbeds (drinking water acquifer) Stormwater reuse for park irrigation

Field Sites Field Sites

Dunphy et al Dunphy et al

Hindmarsh Park, Hindmarsh Park, Kiama Kiama

System during System during dry weather dry weather System surcharging System surcharging during wet weather during wet weather

Dunphy et al Dunphy et al

Mills Park Tennis Mills Park Tennis Centre, Asquith Centre, Asquith

System during System during construction construction Area upstream of Area upstream of the system the system

• site selected for seeding of the filter media with

site selected for seeding of the filter media with nutrients, organic matter and microbial populations nutrients, organic matter and microbial populations

• system flushed with treated effluent

system flushed with treated effluent

Dunphy et al Dunphy et al

Weathertex Weathertex Industrial Site, Industrial Site, Heatherbrae Heatherbrae

System during dry System during dry weather weather System during System during construction construction

Dunphy et al Dunphy et al

Sampling Protocol Sampling Protocol

• Detailed protocol developed

Detailed protocol developed

• Quality assurance

Quality assurance

Dunphy et al Dunphy et al

Sampling Methods Sampling Methods

• Automatic Samplers

Automatic Samplers

• Half

Half-

• Pipe Collection System

Pipe Collection System

Cross Cross-

• section

section A line of slits are positioned along the invert of the half-pipe Half-Pipe Three-Quarter Pipe

Dunphy et al Dunphy et al

Field Investigation Results Field Investigation Results

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 TKN TN TP pH TOC DOC SS TDS Zn Fe F.COLI

Analyte Relative Pollutant Concentration

Inlet Outlet

• Hindmarsh Park, Kiama

Hindmarsh Park, Kiama

Dunphy et al Dunphy et al

Field Investigation Results Field Investigation Results

• Mills Park Tennis Centre, Asquith

Mills Park Tennis Centre, Asquith

• results indicate

results indicate expected short expected short-

• term increased

term increased nutrient, organic and suspended solid loads nutrient, organic and suspended solid loads

• Weathertex Industrial Site, Heatherbrae

Weathertex Industrial Site, Heatherbrae

• most recent system to be constructed

most recent system to be constructed

• limited number of stormwater samples have been

limited number of stormwater samples have been collected collected

• further collections are awaited before conclusions are

further collections are awaited before conclusions are drawn drawn

Dunphy et al Dunphy et al

Laboratory Results Laboratory Results

• Experimental Investigation

Experimental Investigation

• preliminary laboratory tests were undertaken using

preliminary laboratory tests were undertaken using GAC to investigate its organic removal capabilities GAC to investigate its organic removal capabilities – – in in-

• press

press

Batch Test 2 - DOC Concentration Variation With Time - Varying GAC Quantity 5 10 15 20 25 30 5 10 15 20 25 Time (Hours) DOC Concentration (mg/L) 0.5g/L GAC (BT = 2) 2g/L GAC (BT = 2)

Dunphy et al Dunphy et al

Conclusions Conclusions

• Fieldwork is ongoing, further samples are required to

Fieldwork is ongoing, further samples are required to validate the results validate the results

• Results

Results to date indicate the treatment system has to date indicate the treatment system has the ability to reduce the concentration of pollutants the ability to reduce the concentration of pollutants

• Expected short

Expected short-

• term effect of seeding a system with

term effect of seeding a system with tertiary treated effluent has been realised tertiary treated effluent has been realised

Dunphy et al Dunphy et al

Future Work Future Work

• Findings are part of a three

Findings are part of a three-

• year research project

year research project

• Goal of project is to develop a model that is

Goal of project is to develop a model that is transferable to other sites transferable to other sites

• Project is due to be completed by December 2006

Project is due to be completed by December 2006

• Further field work is to take place

Further field work is to take place

• Additional experimental work is to take place

Additional experimental work is to take place

Dunphy et al Dunphy et al

Tak Tak for din for din opmærksomhed

• pmærksomhed

Thank you for your attention Thank you for your attention