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The purpose of a '''first-flush device''' or '''first flush diverter''' is to prevent the entry of debris and toxins into the storage/distribution system of a [[rainwater]] catchment system. | The purpose of a '''first-flush device''' or '''first flush diverter''' is to prevent the entry of debris and toxins into the storage/distribution system of a [[rainwater]] catchment system. | ||
== First flush devices on Appropedia pages == | == First flush devices on Appropedia pages == | ||
* [[ | * [[Rainwater catchment at Isla Urbana #First Flushes]] | ||
* [[Rainwater harvesting#First flush systems]] | |||
* [[Old Growth Cellar rainwater catchment #First flush bucket]] | * [[Old Growth Cellar rainwater catchment #First flush bucket]] | ||
* [[ | * [[Ersson rainwater harvest and purification #Roofwashers]] | ||
* [[WaterPod FBD Rainwater Purification #Description of Final Project]] | * [[WaterPod FBD Rainwater Purification #Description of Final Project]] | ||
* [[Daycare rainwater catchment system#The First Flush Sediment Trap]] | * [[Daycare rainwater catchment system#The First Flush Sediment Trap]] | ||
* And all of those linked below in the gallery. | |||
== Examples of | == Examples of first flush systems == | ||
<Gallery caption="Various First Flush Systems"> | <Gallery caption="Various First Flush Systems"> | ||
File:RWH7.jpg|[[ | File:First Flush.jpg| [[Rainwater catchment at Isla Urbana]]<br>208 liter first flush with floating ball | ||
File:Firstflushassembly.JPG|[[Old Growth Cellar rainwater catchment #First flush bucket|Old Growth Cellar]] <br> 15 gallon first flush tank with side drilled. | File:RWH7.jpg|[[Rainwater harvesting#First flush systems|Practical Action Rainwater Harvesting]]<br>a) the tipping gutter first flush system and b) the floating ball first flush system. | ||
File:Smart-Valve_in_4in_cleanout.jpg|[[ | File:Firstflushassembly.JPG|[[Old Growth Cellar rainwater catchment #First flush bucket|Old Growth Cellar]]<br>15 gallon first flush tank with side drilled. | ||
File:FBDsystem.jpg|[[WaterPod FBD Rainwater Purification #Description of Final Project|Waterpod Rainwater Filtering]] <br> See 2) Ball Valve 3) First Flush | File:Smart-Valve_in_4in_cleanout.jpg|[[Ersson rainwater harvest and purification #Roofwashers|Ersson's roofwasher]]<br>a hollow ball which, when filled by the initial flow of water, seats itself onto a rubber gasket. | ||
File:Lluvia_filtro_firstflush1.jpg|[[Daycare rainwater catchment system#The First Flush Sediment Trap|Parras Mexico Daycare Rainwater]] <br> The first flush is caught by 4" pipe with a floating ball. | File:FBDsystem.jpg|[[WaterPod FBD Rainwater Purification #Description of Final Project|Waterpod Rainwater Filtering]]<br>See 2) Ball Valve 3) First Flush | ||
File:Diseno1.JPG|[[ | File:Lluvia_filtro_firstflush1.jpg|[[Daycare rainwater catchment system#The First Flush Sediment Trap|Parras Mexico Daycare Rainwater]]<br>The first flush is caught by 4" pipe with a floating ball. | ||
File:Diseno2.jpg|[[ | File:Diseno1.JPG|[[HSU Chiapas rainwater catchment#Juan Hidalgo.27s demonstration house|HSU Chiapas Rainwater]]<br>Old design that leaked replaced by next image. | ||
File:IMG_0024.JPG|[[ | File:Diseno2.jpg|[[HSU Chiapas rainwater catchment#Juan Hidalgo.27s demonstration house|HSU Chiapas Rainwater]]<br>New design that use two parallel lengths of pipe. | ||
File:IMG_0024.JPG|[[CCAT rainwater catchment system#First Flush Catchment System|CCAT Rainwater]]<br>First flush with clear pipe. | |||
File:AlmostFinal.jpeg|[[Zane Middle School rainwater catchment]]<br>First flush using a small pickle barrel. | |||
File:Con15 (1).jpg|[[CCAT greenhouse rainwater catchment]]<br>First flush using a long black pipe. | |||
File:IMG_3379.jpg|[[Loleta Elementary rainwater]]<br>First flush using a small section in a long white PVC pipe. | |||
File:Water_enters_the_black_hole.jpg|[[Sanctuary rainwater]]<br>First flush using a blue 20 gal barrel. | |||
File:LasMalvinasfirstflush2014.jpg|[[Las Malvinas rainwater 2014]]<br>First flush using a large white pipe. | |||
</gallery> | </gallery> | ||
==Links== | == Links == | ||
*[[ | |||
*[http://www.saferain.com.au/harvesting.htm Saferain] - Alternative to the Roof Washer | * [[Basic rainwater collection calculations#First Flush Calculations|First Flush Calculations]] | ||
* [http://web.archive.org/web/20130623014505/http://www.saferain.com.au:80/harvesting.htm Saferain] - Alternative to the Roof Washer | |||
{{Page data | |||
| keywords = Rainwater | |||
| sdg = SDG06 Clean water and sanitation | |||
}} | |||
[[Category:Rainwater]] | [[Category:Rainwater]] |
Latest revision as of 13:06, 23 October 2023
The purpose of a first-flush device or first flush diverter is to prevent the entry of debris and toxins into the storage/distribution system of a rainwater catchment system.
First flush devices on Appropedia pages[edit | edit source]
- Rainwater catchment at Isla Urbana #First Flushes
- Rainwater harvesting#First flush systems
- Old Growth Cellar rainwater catchment #First flush bucket
- Ersson rainwater harvest and purification #Roofwashers
- WaterPod FBD Rainwater Purification #Description of Final Project
- Daycare rainwater catchment system#The First Flush Sediment Trap
- And all of those linked below in the gallery.
Examples of first flush systems[edit | edit source]
-
Rainwater catchment at Isla Urbana
208 liter first flush with floating ball -
Practical Action Rainwater Harvesting
a) the tipping gutter first flush system and b) the floating ball first flush system. -
Old Growth Cellar
15 gallon first flush tank with side drilled. -
Ersson's roofwasher
a hollow ball which, when filled by the initial flow of water, seats itself onto a rubber gasket. -
Waterpod Rainwater Filtering
See 2) Ball Valve 3) First Flush -
Parras Mexico Daycare Rainwater
The first flush is caught by 4" pipe with a floating ball. -
HSU Chiapas Rainwater
Old design that leaked replaced by next image. -
HSU Chiapas Rainwater
New design that use two parallel lengths of pipe. -
CCAT Rainwater
First flush with clear pipe. -
Zane Middle School rainwater catchment
First flush using a small pickle barrel. -
CCAT greenhouse rainwater catchment
First flush using a long black pipe. -
Loleta Elementary rainwater
First flush using a small section in a long white PVC pipe. -
Sanctuary rainwater
First flush using a blue 20 gal barrel. -
Las Malvinas rainwater 2014
First flush using a large white pipe.
Links[edit | edit source]
- First Flush Calculations
- Saferain - Alternative to the Roof Washer