Arsenic – do we have a solution?
I still remember my late Mama’s voice in a phone conversation in the late nineties when he told me that now we will just have to say Bismillah and drink the water here. He was referring to the higher than acceptable arsenic concentration in the drinking water from groundwater sources in Bangladesh that was discovered earlier and widely “acknowledged” around that time. Groundwater contamination by arsenic at such high quantity is not just happening in Bangladesh, it is also happening in India, China and in other parts of the world. In fact, worldwide 140 million people, especially in the developing countries, are at risk of arsenic poisoning through drinking water.
So far, we have been hearing mostly about the risks of water with high concentration of arsenic on people and what may be causing it and how many lives maybe at stake. The burning question of how we divert this inevitable calamity went unanswered for too long. The government and international organizations kept pondering upon the question giving no priority and significance to the issue. Even the organizations that initially funded the tubewell project to tap into the groundwater for drinking, where the root of the problem goes back to, failed to recognize and work towards diverting the catastrophe until many years later.
Do a chemistry professor named Abul Hassam, an expatriate Bangladeshi, finally have the answer that will provide a simple yet affordable way to avert what he calls the arsenic poisoning of drinking water “one of the worst natural disaster on earth”? Will Abul Hassam, named this year “Heroes of the Environment” by Time, with his solution save millions of lives of his fellow Bangladeshis as well as millions more elsewhere in the world? Read more about it in Time magazine.
November 2nd, 2007 at 10:28 pm
It is nice to see Professor Hussam (Hussam Bhai as I call him) win another milestone recognition. Indeed, his invention has been a life saver for many in BD. As a scientist, one can only dream of making such differences in people’s lives.
The device is a very good short-term solution. However, as with any filter, this is not a viable long-term solution. Filters collect sludge, with arsenic in highly concentrated form, and these are extremely toxic. In Bangladesh situation, proper disposal of this toxic sludge is a big issue.
In a 2000 fair accompanying the International Conference on Bangladesh Environment ICBEN, I went to a BRAC stall as a judge to find out that they were using a pre-cursor of Professor Hussam and collaborators’ Sono-filter–it was called three-pitcher (or tin kolshi). I asked them how they were disposing the sludge. The answer was that they were burying it underground. I suspect that this is also true today. The problem is that this stuff can easily contaminate the nearby ground water supply, with such a potentially toxic concentration that passing through a filter may not make the water safe (Sono-filter removes 98 percent of arsenic).
One solution for sludge waste disposal is to make a concrete chamber to store it; but this is an expensive proposition.
In the long term, I feel one has to return to surface water sources. Rain collection devices is one way. Also, getting each village to maintain a pond exclusively for drinking and cooking purposes may be viable. Some banking of the pond would ensure that only rain water accumulates and that chemical runoff from nearby agricultural land is avoided. Slight amount of chlorine and abundant sunlight can be used to keep it bacteria free. Some lining could be used to keep contaminated ground water from entering. I think this solution will work in many places.
November 3rd, 2007 at 9:03 am
Its not a new thing that earth foundation an ngo which want to make him as a ethical group making a business with arsenic by filter which is scientifically unproved.
very good to expose early.
Bibhuti Bhushan Mitra
Columnist