Greywater by Natural Home Building

greywaterfilter

Phosphate rich soaps and mild cleaning chemicals in your wastewater (greywater and reuse of washing machine water) are considered pollutants because they accelerate algae growth in the waterways, which in turn leads to oxygen depletion for fish and other marine lifeforms.  

 The beauty of this "problem" is that these same phosphorous, nitrogen, potassium and protein "pollutants" are excellent sources of nutrition when you reuse greywater for irrigation of fruit trees, landscaping, and gardens (planterbeds).

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Greywater Recycling Basics

SANY0011

The safest way to handle greywater is to introduce it directly to the biologically active topsoil layer, where soil bacteria can quickly break it down, rendering the nutrients available to plants. This biological water purification is much more effective than any engineered treatment, thus protecting the quality of groundwater and surface waters.

 

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Common Greywater Errors and Preferred Practices

SANY0010_2

Bad news: Greywater reuse offers much more benefits than are realized in most systems.

Good news: Even the worst shortfalls in greywater design rarely cause actual harm, and for the few that do, it's not much.

 

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Rethinking Water: Greywater Guerilla Workshop Video

greywaterguerilla

A group of people are on their way by bus to an underground meeting to learn how to do something that is illegal in parts of the country.  And what would that be? They are going to a workshop to learn how to install clandestine greywater systems in their yards!

The video shows the steps to reconfigure your plumbing to be able to use your greywater for growing food — how to filter it through mulch and safely reuse it on plants — instead of draining it all away.

Please watch video!

 

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The Bio-Sand Filter and ‘Ideas at Work’

biosandfilter

Improving water quality for the rural community is a continuing priority in Cambodia and has been recognised in its Millennium Development Goals (MDG’s). Part of these improvements has seen a focus on household treatment methods to improve biologically contaminated water.

One of these is the Bio-Sand Filter (BSF). IaW are always keen to take the lead in introducing and improving technologies based on good practice and user feedback. IaW recognised opportunities because of manufacturing and practical disadvantages of the conventional square BSF units. We decided to introduce the first round units to Cambodia because of a number of benefits they have.

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