Posts Tagged ‘Bangladesh’

Deep Tube Well – Pros & Cons

Sunday, October 4th, 2009

The deep tube well is one of the oldest and most reliable ways to get to clean and safe drinking water. People have been doing this for decades. It does have its downsides though:

Pros
- Old & Proven Technology
- Reliable & Easy to Fix
- The water is safe for drinking

Cons
- The high iron content in the underground water makes deep tube well water unsuitable for cooking

I had asked this local (who was also trained to repair the deep tube well if it ever broke down) which she preferred. She choose the deep tube well but later admitted she never had the chance to try the Pond Sand Filter. She’s also aware you can’t use this water to cook with.

Duration : 0:0:45

(more…)

Technorati Tags: , , , , , , , , , ,

Pond Sand Filter – Pros & Cons

Thursday, August 20th, 2009

The Pond Sand Filter is a device that takes pond water and makes it safe to drink by filtering out bacteria that is harmful to human beings. It’s a proven technology but it has its limitations.

Pros
- No fossil fuels, solar power, or electricity required
- Nearly effortless to pump
- Purifies enough water everyday to provide hundreds of families clean & safe drinking water
- The water purified is safe enough to be used for cooking (low or no iron in the water)

Cons
- Limited lifespan (minimum two years), needs to be replaced eventually like any filter
- Increased complexity vs. the deep tube well (Murphy’s Law – more can go wrong)
- More vulnerable to vandalism than a deep-tube well (can unscrew and steal the faucets, etc)

The person in the video is a local villager. She’s not an expert in pond sand filters – but I wanted to see what the local perception of Pond Sand Filters are.

Duration : 0:0:54

(more…)

Technorati Tags: , , , , , , , , , , , , , , , , , , , , , ,