Biological sand filters, a practical approach to combat poverty and inequality

Sep 24, 2008

Microbiologically contaminated water plagues approximately 1.1 billion people in rural and peri-urban populations in developing countries. Roughly 2.2 million people without safe access to drinking water die each year from the consumption of unsafe water, and most of them are children under 5 years of age.

A new article published in Current Protocols in Microbiology provides detailed instructions for constructing and using low-cost biological sand (biosand) filters capable of dramatically improving the quality of drinking water. The article has been made available for free and can be viewed here.

Biological sand filters, which have gained acceptance by the World Health Organization as a viable household water treatment technology, work by having water percolate slowly through a layer of sand, where microorganisms form a bacteriological purification zone. This process filters harmful pathogens from contaminated water. To use the filter, a person simply pours contaminated water into the household biosand filter and immediately collects treated water.

The filters will do more than provide safe, clean drinking water. According to Michael Lea, author of the article, "the filters will provide a cost-effective practical approach to combat poverty and inequality."

Source: Wiley

Explore further: Study shows where damaged DNA goes for repair

Related Stories

Thinner capsules yield faster implosions

15 minutes ago

In National Ignition Facility (NIF) inertial confinement fusion (ICF) experiments, the fusion fuel implodes at a high speed in reaction to the rapid ablation, or blow-off, of the outer layers of the target ...

Why be creative on social media?

15 minutes ago

There are five motivators for creating novel content online, whether blog posts, shared news stories, images, photos, songs, videos or any of the other digital artifacts users of social media and social networking sites share ...

Recommended for you

Study shows where damaged DNA goes for repair

5 hours ago

A Tufts University study sheds new light on the process by which DNA repair occurs within the cell. In research published in the May 15 edition of the journal Genes & Development and available May 4 onli ...

How to reset a diseased cell

May 01, 2015

In proof-of-concept experiments, researchers at University of California, San Diego School of Medicine demonstrate the ability to tune medically relevant cell behaviors by manipulating a key hub in cell communication networks. ...

Highly efficient CRISPR knock-in in mouse

May 01, 2015

Genome editing using CRISPR/Cas system has enabled direct modification of the mouse genome in fertilized mouse eggs, leading to rapid, convenient, and efficient one-step production of knockout mice without ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

codesuidae
not rated yet Sep 24, 2008
Link doesn't exist.

http://mrw.inters...rent/pdf

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.