Thread started: Feb 3 2010, 2:53 AM EST
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This was prompted by some of Pedro's plan.
In my experience, grey water can be strained by mesh (to keep solids from clogging pumps and irrigation) and used immediately, no other filtration or treatment necessary.
Growing up on a ranch, we relied on a septic tank and leech field to take care of waste water. The only thing that went into the septic tank were the toilets. Everything else (kitchen sink, shower, washing machine, bathroom sink) went into a holding tank with a pump that fed irrigation systems.
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RE: Grey Water vs Black Water
By: ,
Feb 3 2010, 10:53 PM EST
To clarify things (for me mostly)...
Grey Water: Water from kitchen sinks, showers/baths, laundry, and other water that contains no fecal matter (poop) or urine (but is not fresh). You can filter it to make it usable to irrigate crops post-Z Day.
Black Water: Water that contains urine or fecal matter.
Here are some articles I found online.
How to make grey water safe for irrigation: http://aces.nmsu.edu/pubs/_m/m-106.html
How to make black water good fertilizer: build a composting toilet! http://www.wikihow.com/Build-a-Composting-Toilet
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