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Frederick DreerTravel AwardThe vetiver system around the world
6 months of research abroadOctober 2010 - April 2001
I Maria Calderon
: guatemalaCHILE
indonesia
Guatemala, Lake AmatitlanGreen Movement Against Green water
Guatemala, Lake AmatitlanWatershed 281km2
Green Movement Against Green WaterCornell Honors Thesis May 2010
PROBLEM: Dentritic gullies whichwere once riparian corridors deliveringfresh water to Lake Amatitlan are nowbarren as people encroach this delicateecosystem causing tremendous erosionand dumping their waste into the rivers.
source: AMSA
source: AMSA
Guatemala, Orthodox Monastery
Pontoons to lter Tilapia sh ponds
PROBLEM:
2005
2008
Dreer Travels
Grey Infrastructure vs
The Vetiver System
http://www.bhavikpatelunlimited.com
photo-Paul Truong
Vetiver Origins and CharacteristicsChrysopogon zizanioides
Southern India - essential oils
Tall grass with varying height from 0.5 to 3.0 m tall
Pioneer species
Dense root system without rhizomes, can grow up to 3.6 m deep in a year “A Living Soil Nail” – Average tensile strength of 1/6 of mild steel
Flowers are sterile and plant is therefore non-invasive
Tolerance: High concentrations of nutrients (N and P), heavy metals; acidic, alkaline, or saline soils;Herbicides & plagues; Fires
Temperature range -15o to 60oC (5o to 140o F),
Complete saturation or drought(xerophyte & Hydrophyte thanks to aerenchyma development)
Intolerance: Shade, Complete fl ooding of foliage for an extended period of time, Animal grazing (rabbits)
When used in civil works its cost is about 1/20th the cost of the traditional grey infrastructure.
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Ecopark [your name here]43 hectares =108 acrespotentially service 219,600 people
Constructed wetlands for polishing wastewaterAustralia, Incitec- Pontoons for absorbing N + PAustralia, Gelita- Horizontal fl ow Reedbeds and irrigated fi eldsAustralia, Toogooloowah- subsurface fl ow fi eldsAustralia, Loganholme- Macrophyte screening for sludge drying bedsIndonesia, Java - Citarum river septic tank
Slope stabilizationFlood and erosion controlLandscape architecturePoverty Alleviation
Slope stabilizationFlood and erosion controlLandscape architecturePoverty Alleviation
SLUDGE
Holding Tank
Raw Septage
Screen
Drying bed 1 GeobagDrying bed 2
Ree
d be
d 1
Ree
d be
d 2
Ree
d be
d 3
Purified Water Tank
Discharge
Macrophyte Screeningfor a Stand alone biologicalTreatment plant for residentialSeptage
Which macrophyte works best? Conventional sludge drying bed
56 wheelie bins used ofscreening Macrophytesto be used in sludgedrying bed
Construction process
56 wheelie bins 6 species (+old Vetiver)1 control X 4 replicates1 trial X 4 replicates
Trial to test N + P removal of different species
Construction phase.amanda butler
Three Horizontal Sub-surface fl ow reedbeds - PILOT SCALE for treating wastewater from a gelatin factoryGlita Australia
Healthy Vetiver in Summer 2008 with outlet pipes on right. paul truong
Abandoned horizontal fl ow reed beds with Vetiver grass brown after winter.paul truong
Total N removal 49%
Pontoons For nutrient absorbtionIncitec fertilizer Factory, Australia
$$$!
Subsurface ow wetland
http://www.nosoloviajeros.com/citarum-river-indonesia-el-rio-mas-contaminado-del-mundo/
Citarum River - Java, Indonesia
2 months after plantinginitial planting
SOLUTION:
PROBLEM:
Constructed wetlands for polishing wastewaterSlope stabilization
Chile conference- SWAT stabilizationIndonesia, Bali- soild buildup in farmlandChile conference Colombia- eco mortarAustralia, Brisbane fl oods Powerlink- Stabilizing an electricity towerIndonesia, Bali-Road works in volcanic soils
Flood and erosion controlLandscape architecturePoverty alleviation
Constructed wetlands for polishing wastewater
Flood and erosion controlLandscape architecturePoverty alleviation
Bioengineering Principlesfor planting on slopes
SCRAPED BATTER AND SEDIMENT CARRIED BY RUNOFF IS TRAPPED BY VETIVER HEDGES, WHICH BUILDS UP THE TERRACE HEIGHT
SOIL BUILDUP
FORCE
15-25cm
Farmland in Citarum River Basin - Java, Indonesia
Soil buildup
Coal mining rehabilitation
East Bali Poverty Project - Consulting Services
April 2009 March 2011
3 months later
SWAT stabilizationOswaldo LuqueVenezuela
EcomortarPinto Peanut + Vetiver + Ecomortar provide a a light, envronmentally friendly and hygrospoc retegreen retention wall
Colombia
Powerlink - save the tower!Scouring caused during the Brisbane fl oods
fl ood level
original slope
planting completed
After 1 monthʼs growth
Constructed wetlands for polishing wastewaterSlope stabilizationFlood and erosion control
Australia, Laidley- dissipating fl ash fl oods at drainage channelsAustralia, Loganholme Motorway- Pioneer plant for inhospitable alluvial soils
Landscape architecturePoverty alleviationLandscape architecturePoverty alleviation
Constructed wetlands for polishing wastewaterSlope stabilization
Flash Flood controlVetiver Hedges cause water to back up behind the rows and increase infi ltration at this intersecion where two major drainage paths intersect - Laidley Australia
Vetiver Hedges for Flash Flood control -Laidley, Australia
Constructed wetlands for polishing wastewaterSlope stabilizationFlood and erosion controlLandscape architecture
Australia, Woodlands- Stormwater drainage basinAustralia, Springfi eld- BioswalesAustralia, Incitec- rain garden design
Poverty alleviation, g g
Poverty alleviation
Constructed wetlands for polishing wastewaterSlope stabilizationFlood and erosion control
Woodlands Development, Brisbane Australia
Multifunctional LandscapingWoodlands Development, Brisbane Australia
Australia, Brisbane - Springfi eld Lakes, Bioswales “Billabongs”
Mainenance...Springfi eld Development, Brisbane Australia
Constructed wetlands for polishing wastewaterSlope stabilizationFlood and erosion controlLandscape architecturePoverty alleviation
East Bali Poverty ProjectCommunity involvement in establishing infrastructure (roads, water collection)Agriculture enhancementHandicrafts
NGOʼs main source of income = vetiver consulting services
Constructed wetlands for polishing wastewaterSlope stabilizationFlood and erosion controlLandscape architecture
East Bali Poverty Project
Over 80% were malnourished and had goitre due to iodine defi ciency; 70-100% were illiterate in the 1,000+ families highest up the mountains.
Only source of water for over 400 familiesafter 2-3 hours walk
Funded by Rotary Club
Funded by Vetiver consulting services
Permanent Spring ProtectionStabilizing infrastructureCommunity involvement in building road stabilized by Vetiver
Stabilizing SchoolsVetiver Stabilizes fi rst schools built on Complete fi ll embankments
Organic Farming- Facilitated by Vetiver hedges which hold back otherwise erodable sandy soil
Kids teach their parents
First Carrot Harvest and First Potato Harvest
School Garden stabilized by Vetiver
Integrated Pest Management?attract the insect to lay eggs where there is little chance of survival
90% larvae mortality rate
Dr. Van den Berg, Can Tho University, South Africa
Consulting Services $$$Provided by the East Bali Poverty Project to help fund their programs
HandicraftsHelping people help themselves - East Bali Poverty Project, Indonesia
THANK YOU!!! Dreer Committee
Nina BassukJeremy FosterMarvin Pritts
Asian coordinator of the Vetiver NetworkPaul Truong
East Bali Poverty Project
David BoothArdika AdinataJulita Mekaria
Other Johannes Biala Isai Calderon II Isabel Ayau Olga Ayau