Greywater

site under construction

Good Gray Water Summary

 * http://www.ecosanres.org/pdf_files/ESR_Publications_2004/ESR4web.pdf

Strategic Planning
Source Control -> Plumbing and Pipesystem -> Pre-Treatment -> Treatment -> Post-Treatment(?)

extensive planning help, tips and tricks: From the University of Natural Resources and Applied Life Sciences (BOKU), Vienna For the new-house builder
 * http://www.greywater.com/planning.htm
 * http://www.wau.boku.ac.at/fileadmin/_/H81/H811/Skripten/811362/03_Design_questions.pdf
 * http://oasisdesign.net/greywater/buildersguide/actionssummary.htm

Things to consider
1)hydraulic load 2)load of easily degradable organic matter and BOD (biochemical oxygen demand)

ad1)maximum load of water: estimated gray water amount for one person (incl. rain/storm water for mulch basin and planted soil filters):
 * http://www.rssweather.com/climate/Missouri/Kansas%20City/)

see also: Percolation Test

ad 2)possible properties of gray water: Organic Compounds Pathogens Nutrients Metals/Toxins

3)Source Control: water-conservation methods

4)Duckweed has excellent capabilities for greywater purification and should be considered as a component of a treatment system.

Tests and Preparations
Percolation Test: to determine the water absorption rate of the soil In general, soils are classified as clay soils, sandy soils, or loamy soils. Clay is nutrient rich, but slow draining. Sand is quick draining, but has trouble retaining nutrients and moisture. Loam is generally considered to be ideal soil because it retains moisture and nutrients but doesn’t stay soggy.

or
 * http://www.extension.umn.edu/distribution/naturalresources/DD0583.html
 * http://www.percolationtest.com/

Treatment Methods
laundry to mulch basin system (oasisdesign.net):

PDF-Version:
 * http://oasisdesign.net/greywater/laundry/index.php
 * http://oasisdesign.net/greywater/createanoasis/LaundryToLandscape.pdf

It's the simplest, most economical residential greywater system—design open source franchise including: Introduction Design Calculator Parts Parts sources Maintenance Installers Installations photo album Comments

Online e-Books
Graywater Guide Book (Department of Water Resources of California)
 * http://www.owue.water.ca.gov/docs/graywater_guide_book.pdf

Septic Systems Owner's Guide Book (Grand Valley State University) help site-fact sheet: http://www.soil.ncsu.edu/publications/Soilfacts/AG-439-22/
 * http://www.gvsu.edu/forms/isc/septage/septic_guidebook.pdf

A Homeowner's Guide to Septic Systems (American Environmental Protection Agency)
 * http://epa.gov/owm/septic/pubs/homeowner_guide_long.pdf

Links
Open Directory Project (human-edited internet directory) site on wastewater:
 * http://www.dmoz.org/Science/Environment/Water_Resources/Wastewater/Household_Wastewater_Management/

Stockholm Environment Institute - Ecological Sanitation Research: Sustainable Sanitation for the developing world; not open source but most publications are free of charge and worth reading
 * http://www.ecosanres.org/

From the fund of the University of Natural Resources and Applied Life Sciences (BOKU), Vienna
 * http://www.wau.boku.ac.at/fileadmin/_/H81/H811/Skripten/811362/11_Reuse_Wastewater.pdf

