NGO Another Way (Stichting Bakens Verzet), 1018 AM Amsterdam, Netherlands.

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Edition 03 : 04 August, 2010

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SOME RECOMMENDED DEVELOPMENT TECHNOLOGIES

Locally built Moringa sand filters for water purification.

How to make a Moringa sand filter.

Information supplied by courtesy of:

Centre for Affordable Water and Sanitation Technology (CAWST), Canada.

and

Rural Africa Water Development Project (RAWDP), Nigeria.

A general description:

A step by step description:

Moulds for the external filter body.

General advice.

Materials list.

Step 1.

Step 1 (continued).

Step 2.

Steps 3 and 4.

Step 5.

Steps 6 and 7.

Step 8.

Step 8 (continued).

Step 9.

Step 10.

Step 11.

Step 11 (continued).

Steps 12 and 13.

Steps 13(continued) and 14

Concrete filter construction

Standpipe.

Preparing the mould for casting.

Preparing the mould for casting (2) (continued).

Preparing the mould for casting (3) (continued).

Pouring the filter.

Removing the filter from the mould

Diffusers and lids

Specifications.

Plastic and metal diffusers.

Deep metal box diffuser.

Lids.

Simple wooden lid.

Placing filter materials.

Note that is available a 5 cm layer of pumice should be placed at the bottom of the filter media. The role of this pumice layer is basically to rid the water of organ chlorides, and dissolved organic carbon (DOC) as well as other micro-elements or ions like those from phosphorus, lead, iron and manganese.

Placing the media.

Flushing the filter.

Testing the flow rate.

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RETURN TO:

Locally built Moringa sandfilters for drinking water filtration.

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RETURN TO:

Some recommended technologies.

Model homepage. Bakens Verzet homepage.

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"Money is not the key that opens the gates of the market but the bolt that bars them."

Gesell, Silvio, The Natural Economic Order, revised English edition, Peter Owen, London 1958, page 228

“Poverty is created scarcity”

Wahu Kaara, point 8 of the Global Call to Action Against Poverty, 58^th annual NGO Conference, United Nations, New York 7^th September 2005.

"In the end, it's about love for mankind. Freedom begins with love.

Our challenge is to learn to love the world"

Nigerian writer Ben Okri, interview in Ode Magazine, Dec 2002-Jan 2003, p.49

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