Thursday, April 20, 2006

What is the BioSand Filter?


April 20, 2006


The BioSand filter works in the same way as traditional slow sand water filters, which have been used for centuries. The difference is that the BioSand filter is smaller, and water does not need to flow through it all the time. The filter can be built anywhere in the world because it is built using materials that are available. It is simply a concrete container, with layers of sand and gravel inside it. The sand and gravel remove dirt, bacteria, viruses and parasites and other impurities from the water.
How does it work?
Water is poured into the top of the filter whenever it is needed. There is a diffuser plate placed just above the sand bed that absorbs the shock of the falling water so it does not disturb the sand. Traveling slowly through the sand bed, the water then passes through several layers of gravel and collects in a pipe at the bottom of the filter. It is then pushed up through plastic piping that is encased in the concrete, and out of the filter, for the user to collect.

Tuesday, April 18, 2006



April 10, 2006

Leper Community Toilet Project:

$2,300 was donated by the Birmingham Michigan Rotary and a toilet was built by the lepers in Nepal. It has been completed and will be checked personally in the fall.

BioSand Filter Training:
In February 2006, the Heasleys took a 5-day training seminar under Dr. David Manz the inventor of the BioSand filter to update the training they received from CAWST in 2003. Dr. Manz is in the beginning stages of mass-producing a plastic version of the BioSand water filter. The goal is to make it affordable to ship large quantities anywhere in the world. John and Eileen conducted a training class in April, 2006 teaching BioSand filter facilitators to individuals going to Mali Africa, Ghana, and Mexico. This was sponsored by Rotary International District 6380. The first training was in November 2005 when 15 Rotary members participated.

Travel:
The Heasleys are speaking at the 6380 District Conference in Kalamazoo in May. 2006. In October, John and Eileen plan to return to Nepal and personally check the filters and toilet, take pictures, visit Rotary clubs, study rainwater harvesting, and meet others interested in water issues in Nepal. They expect to come home with new projects in the fall. They will pay all their own travel costs.