Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
Experiencing technical difficulties since 1999

idea: add, search, annotate, link, view, overview, recent, by name, random

meta: news, help, about, links, report a problem

account: browse anonymously, or get an account and write.



Gutter grass

Little wetlands.
  (+7, -2)
(+7, -2)
  [vote for,

Consider the gutter. In residential neighborhoods, runoff into the gutter is minimally contaminated and most contamination is fertilizer / pesticide from lawn care. In old neighborhood there might be a combined runoff and sewage line but in newer ones the runoff sewer is seperate and is often dumped untreated into river or sea. In the US southwest I suspect a fair amount of the runoff captured on a daily basis is from broken or misapplied sprinklers.

This runoff water could be captured and used without further treatment to irrigate landscapes / agriculture. It would be good to clean it of sand and dirt if possible.

Anyone watching gutters will have noted that when cracks grow weeds, pools form behind these weeds. A fair amount of dirt and sand collects in these pools. Usually this is considered unsightly, but it must render water going into the drain cleaner.

In the water reuse system, gutters will have depressions, possibly with small overlying plates with holes. The point will be to retain dirt and so encourage growth of weeds which in turn act as small wetlands, slowing water and preciptating out dirt and sand. Periodically homeowners will shovel trapped dirt (and maybe some weeds) int the shubbery.

bungston, Oct 25 2010

Similar implementation baked. http://maps.google....TF-8&gl=us&t=h&z=20
[scad mientist, Jul 15 2011]


       Is it Phoenix, Arizona, that has its runoff water system feed into a sandy wetland that filters the water and allows it to be reused?
infidel, Oct 26 2010

       the gutter grass will block the flow of water and there won't be any gutters left. (-)
Voice, Oct 27 2010

       I propose this also be used in bowling alleys. As punishment for a gutter ball, not only do you hit no pins but your ball comes back wet.
phundug, Nov 01 2010

       //Consider the gutter.//   

Boomershine, Nov 01 2010

       This would be a good idea if lawn run-off really had that high a concentration of fertilizers and pesticides, but it doesn't. Most of that actually comes from commercial farming. I think that a better idea would be to create artificial wetlands and pass sewage water through it as a means of natural purification. This would also suck a lot of the phosphorus from laundry detergent out of the water and decrease anoxic zones at river mouths.
Mythobeast, Nov 01 2010

       boomershine :-)
pashute, Jul 15 2011

       [Voice] I thought the same, then realised it's for street gutters, not roof gutters.   

       I suspect that the most problematic contaminants are heavy metals and asbestos, rather than nutrients; hence yes to pits to collect sediment, but ni! to growing things in it and shovelling it into the shrubbery.
spidermother, Jul 15 2011

       This concept with a slightly different implementation has been baked fairly recently. See my link to a satellite photo. I don't know if this idea came first or not.   

       Along a newly widened section of road I noticed an odd looking arrangement of tree wells and storm drains. There were cutouts in the curb by the tree wells that would allow water flowing along the curb to flow in. A few feet downhill from that was a standard storm drain. I assume that when there are small amounts of rain (typical at this location), all of it will flow into the tree well and keep the tree well watered. In a big storm, the tree well will saturate and excess water will flow past and go down the storm drain. It seem to me that this would keep the drains dry most of the time, and they would usually only carry water when there was a large quantity, so the drains would be much less likely to get clogged with sediment.
scad mientist, Jul 15 2011

       That is nifty! It gives me an idea too.
bungston, Jul 15 2011


back: main index

business  computer  culture  fashion  food  halfbakery  home  other  product  public  science  sport  vehicle