Grey Wate System
Grey Wate System
(OP)
Has anyone here designed a grey water system? I speak of a type that uses the grey water for flushing toilets and urinals, no irrigation.
Please list do's and don'ts. Thanks.
Please list do's and don'ts. Thanks.





RE: Grey Wate System
Search "Grey water" on the forum. I don't know how to make it take you there.
RE: Grey Wate System
http:
Having said that, everytime I get asked to design a grey water system it gets stopped at the 'how big a space do you need for a tank and treatment area?' the second big stop comes from 'how much do we save a year?'.
A systems with low flow toilets, ultra-low flow, or zero flow urninals and low flow faucets will reduce water usage significantly (52%) and don't have the maintenance issues that grey water has.
RE: Grey Wate System
You mentioned tank size. It is my understanding that grey water should not be stored for more than a day, else it turns septic. What size do you use? For the system I have in mind (serving 10 flush tank WC and 4 urinals), 100 gallons should be more than sufficient.
You also mentioned treatment. What treatment besides filtration are you speaking of? A lot of treatment sort of defeats the purpose of re-using the water, no? Thanks.
RE: Grey Wate System
There may be also requirements for 'clarifiers'.
I'd crosspost over at
http://www.eng-tips.com/threadminder.cfm?pid=164
Asking what the recommended treatment for greywater for reuse is.
RE: Grey Wate System
You can also probably google it and find other info on the web.
RE: Grey Wate System
Maybe particularly if there is any chance that the potable water line in the area may have to be dug up and tapped for connection in the future it would be a good idea when the parllel installation or crossing is made to also to well-mark the lines (all kinds of pipe can of course now be durably marked for the services in such locations with very close parallel or even colored/labeled/marking tapes spirally wound around the pipes, special colored and/or labeled polyethylene wraps, or other means, and of course taps could even conceivably be installed to draw off and test samples of withdrawn water from any suspect pipe/line before someone drinks from a new service (as appears to be at least hinted in some crossing areas of standards). Where potable water and other pipes etc. must be installed in close proximity, there may also be some value to very strong/robust (impact/gouge/damage-resistant etc.) pipe materials in general, as "stuff happens" and maybe particularly in such congested areas.
RE: Grey Wate System
Mike Halloran
Pembroke Pines, FL, USA