passive water harvesting & greywater use with christina diamond
DESCRIPTION
An overview presentation of the ways to manage water on land to prevent erosion, direct water, and to capture and store water in the cheapest storage there is--right in the ground!TRANSCRIPT
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Passive Water
Harvesting
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Protect Surface Water
Improve Soil Fertility
Prevent Flooding & Overloading of Infrastructure
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Essential Properties of Water
image
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Essential Properties of Water
● Water flows at right angles to contour
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Essential Properties of Water
● Water flows at right angles to contour
● Faster flow = greater capacity to carry pollutants & sediments and more power to cause erosion
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Essential Properties of Water
● Water flows at right angles to contour
● Faster flow = greater capacity to carry pollutants & sediments and more power to cause erosion
● It is much easier to manage small volumes of slow moving water than it is to manage large volumes of fast moving water
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HydrologyHydrology
&&
WatershedsWatersheds
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source: LA DEQ
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“The BioSand Filter uses both physical and biological mechanisms to remove the following contaminants: more than 96% of fecal coliforms, 100% of protozoa and helminthes; 50-90% of organic and inorganic toxicants; more than 75% of iron and manganese; and suspended sediments.”
- UN FAO
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Earthworks!
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Berms
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Basins
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Swales
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Bioswales
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French Drains
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Check Dams
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Terraces
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Gabions
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Greywater Systems
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Greywater Systems
> Greywater is wastewater that does not include sewage
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Greywater Rules
1. Never let greywater collect on the surface
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Greywater Rules
1. Never let greywater collect on the surface
2. Never pour bleach, drain cleaner, or any other toxic material down any drain connected to a greywater system
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Greywater Rules
1. Never let greywater collect on the surface
2. Never pour bleach, drain cleaner, or any other toxic material down any drain connected to a greywater system
3. Always protect surface water
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A Simple, Expandable Greywater System
-Branched Drain System
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Branched Drains
House
Deep mulch filled basins
Black pipe
'Y' fittings
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