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A minor field study of groundwater contamination at Ludhiana, India
2002 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The people in Ludhiana City in Punjab, India are totally dependent on the groundwater for drinking, irrigation and household purposes. Earlier studies have shown that the groundwater is polluted, mainly by cyanide and chromium. This creates a danger to the local people since both cyanide and chromium are toxic substances. In this study, the situation regarding inorganic groundwater pollution in Ludhiana is further evaluated. The study was performed at the Division of Applied Geology at LuleƄ University of Technology in co-operation with the Division of Land and Water Resources at the Royal Institute of Technology in Stockholm and the Department of Geology at Panjab University in Chandigarh, India. The cyanide analysis shows only low values of cyanide in the groundwater, contrary to an earlier study performed in 1999. There is a risk of measurement errors in some sampling which could be the reason to these differences. But the changes can also be explained by reduced discharge of cyanide in the effluents or changed conditions in the aquifer environment. The indication given from this explanation is that the aquifer is not irreparable damaged and cyanide will not have to be a problem if the cyanide discharges are stopped. Regarding metals the groundwater is affected by preferably chromium in parts of Ludhiana City. The highest Cr-content found, 0.54 mg/l, is found in a well located in an area along GT Road. In this area a homogenous contamination plume over the whole area was expected but not found. Instead the contamination seems to have a pattern consisting of more local areas of distribution. The conclusion drawn from this observation is that, in addition to effluents from the big industries, also some of the smaller industries with poor or non-existing treatment of their effluents, possible along with old wastes in the ground, causes significant parts of the groundwater pollution. High chromium levels have also been found in a residential area with small scale industries called Janta Nagar. The upper aquifer in Janta Nagar is strongly affected and maybe the contamination has also reached the deeper aquifer in this area.

Place, publisher, year, edition, pages
2002.
Keyword [en]
Technology, groundwater, geochemistry, cyanide, chromium, Ludhiana, India
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-50065ISRN: LTU-EX--02/002--SELocal ID: 75a9d823-a95a-40d3-bdaf-5f18fadbe34dOAI: oai:DiVA.org:ltu-50065DiVA: diva2:1023419
Subject / course
Student thesis, at least 30 credits
Educational program
Environmental Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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