Field visit to Kutch
1 field visit:
• we are reached at 2 clock .kharaghoda which is a part of the little Rann of Kutch.there we were received by Ambu Bhai. He is the salt farmer.he told many things about the Rann. He said over the area of 5000 square kilometers.
• From October the farmers digging the wells. The depth of the well from around 15 feet. After they bore deeper to around 60 feet to get the bring water.I asked Ambu Bhai best where they should dig the told us that there is no logic and that it was like a lucky drow.During the process of digging and boring toxic gas are open.the farmers working in the well suddenly unconscious. This result in the death of many salt formers every years.
• They toid us that is was their experience that when well the next years and remove the cloth from the mounts of the pipe there is a rapaid of toxic gase. Then tie ropes around the waist or the person going into the well so that he can be pulled out IH case toxic gases start coming out. next day we again went to the field with the aim to get some samples of the well water
• and know more about the gases that come out of these wells.
• He took us to his well which was quite shallow compared to
• the wells we had seen the day earlier. He removed the cloth which was used to cover the
• pipe bored into the ground. As soon as the cloth was removed we smelt the unmistakable
• foul smell of hydrogen sulphide. This was a surprise since we were earlier told that the gas
• was odourless. We took the samples of the soil on the outer surface as well as from the
• depth of around 2 feet. We also took the water from the well in a bottle which contained the
• dissolved hydrogen sulphide. We then went to the village dispensary to gain some insight
• into the effects of the gas. The doctor told us that the main diseases prevalent among the
• salt farmers are asthma, hypertension. He also told us that many people have come to thvillage in the past with similar questions but no steps have ever been taken.
2 field visit:
• We then visited the residence of asked him to smell the gases coming from
• the water collected in the bottle. Surprisingly he said that he could not smell anything even
• though we could clearly smell the foul odour. This showed that due to exposure over a long
• period of time these farmers have become accustomed to the smell of the gases. It was an
• unexpected observation which led us to conclude that the major gas present in the well is
• hydrogen sulphide but the farmers could not detect it because they have become
• accustomed to the foul odour of this gas. Meanwhile we took the water sample and from the
• well with the hope that chemical analysis of the sample would give us information about the
• other gases present inside the wells along with their concentrations. However when we
• reached the lab we found that all there were no gases present which made us conclude ththe gases, if present, have already escaped the water in the bottle.
• Generation of toxic gases in brine wells is a very frequent phenomenon. Every year
• there are numerous cases of accidents including fatalities resulting from harmful gases.
• Although there are industrial detectors available for toxic gas sensing, the high cost of such
• systems make them beyond reach of the salt farmers, who are one of the poorest section of
• 'producers' in our country.
• So, we did a literature search to find various harmful gases that are generated in salt
• wells of Little Kutch region. However, we were surprised to find no study specific to Kutch
• area for this problem. But there are reported incidents of carbon monoxide, carbon dioxide
• and hydrogen sulphide poisoning in other wells and sewages across the globe.
• after the salt the remaining waste water is of magnesium