The Transferability of Recycled Water Treatment Systems ...€¦ · 16/10/2009 · The...
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The Transferability of Recycled Water Treatment Systems across Various Decentralised Scales Angel Ho Decentralised Systems Project 18 August 2009 Urban Water Security Research Alliance
Transcript of The Transferability of Recycled Water Treatment Systems ...€¦ · 16/10/2009 · The...
The Transferability of Recycled Water Treatment Systems across Various
Decentralised Scales
Angel HoDecentralised Systems Project
18 August 2009
Urban Water Security Research Alliance
Co Authors
Ted GardnerDERM & CSIRO
Cara BealDERM
Ashok SharmaCSIRO
Barry HoodDERM
Pressures on Pressures on Urban AreasUrban Areas
• Population growth• Constrained water
& wastewater infrastructure
• Climate change• Carbon tax
• 50,000 new residents each year
• 754,000 new homes by 2031
ProblemsProblems
New development
SolutionSolution………… Upgrade the STP Upgrade the STP
($70M) ?($70M) ? oror
Build a decentralised Build a decentralised plant?plant?
Nambour STP
Ever increasing loads on existing STPs
Research Aim
•• Can decentralised WWT&R systems be Can decentralised WWT&R systems be incorporated into mainstream urban incorporated into mainstream urban developments?developments?
We examine three cluster-scale systems to explore how sustainable the systems are
– GHG emissions and residual production– Robustness to variations in loads– Challenge/opportunity presented when they
scale up for larger developments
Capo Di Monte Retirement Village
46 one/two bedroom houses… for over 50s
Communal Resort… heating swimming pool using rainwater
Irrigation with recycled Water
Capo Di Monte WWT&R PlantKubota MBR system
Capacity: 115 EP
ADWF: 11 kL/day
Required RW quality:
BOD5 :10 mg/L; TSS: 10 mg/L
TN: 10 mg/L; TP: 5 mg/L
E.coli: 10 colony /100 mL
Protozoa/virus: 10 col/100 mL
Min Cl2 residue: 1 mg/L
MLSS and the Transmembrane Flux & Pressure
Wastewater gravity fed to storage tankbefore anoxic chamber and MBR
The MBR Plant
UV treatment of recycled water
MBR
A 2008 view of the Ecovillage looking east to the ocean
The Currumbin Ecovillage110 houses (400-1600 m2)
1st Flush Diversion
Tank
Pressure Pump and UV
Covered Recycled Water Pond
Potable Water Supply to House
Wastewater Collection System
Recycled Water Distribution
Household Toilet Flushing and Garden Watering
Recycled Water Supply to Open Space Irrigation
To Currumbin Creek
Site Stormwater Runoff
Tank Overflow
Fire Hydrants(future)
Possible Supplement by Borewater
Balance Tanks
The EcoVillage at Currumbin Schematic
UV dosing
ClNTU
SPS
Emergency Storage
WWTPWTP
WSUD
Primary Tanks
Anoxic / Recirc
Orenco Textile Filters
Memcor CMF
The Currumbin Ecovillage WWT&R Plant
Textile filter
Textile Filter
Underground filter pods
Activated carbon filter for odour treatment
The recycled water treatment plant
Microfiltration
UV treatment of
recycled water
The northern most surf beach on the east coast of
Australia… at “Sunrise” 1770
Typical houses
(172)
Communal resort for scientists
Sunrise @1770 WWT&R Plant
Anoxic tanks
Sonic disintegrator
Sewage Pump Station
Zeolite filters
Key AreasEnergy & flow metering at key treatment process components
Process applicability
WW characteristicsflow ranges & variationefficiency & effectiveness
Robustness Hydraulic shock loadsCOD shock loads
SpaceFootprintAccessibilityExpansion
GHG emissions
Energy Fugitive GHG
CAPEXOPEXCost
Receiving environment
Odour & noiseSludge productionLand application
Quality measurement gas, liquid and sludgeSolids, BOD, COD nitrogen, phosphorus & microorganisms
fugitive GHG emissions
Mass balance & kinetic Model (e.g.ASM1)Estimate oxygen consumptionEstimate sludge productionEvaluate key variables influencing
treatment performance
Life Cycle Costing
Data for Life Cycle Assessment
Virtual application to SEQ greenfield developmentsVirtual application to SEQ greenfield developments
Methods
