Arsenic in groundwater is a huge problem in numerous regions of the world. Many people are exposed to high arsenic concentrations and consequently risk getting ill or even die as a result of arsenic poisoning. There are several efficient technologies for the removal of arsenic but often these methods have disadvantages, e.g. high costs for installation and/or operation, the need for chemicals or the production of arsenic contaminated filter sludge. These disadvantages can make the application difficult, especially in poor regions. Under suitable ancillary conditions the subterranean (in-situ) treatment, which is often used for iron and manganese removal from groundwater, can also be applied for the removal of arsenic and can be a cost-effective treatment technology. A field trial was carried out with a low-cost in-situ treatment plant in West Bengal/India which is described in this paper, in order to investigate whether this treatment technology is also applicable under the boundary conditions there. As for the in-situ treatment technology besides oxygen no additives are required and no arsenic contaminated filter sludge is produced this technology could be a suitable method for arsenic removal especially in poor regions.
Research Article|November 01 2008
A contribution to solve the arsenic problem in groundwater of Ganges Delta by in-situ treatment
Water Sci Technol (2008) 58 (10): 2009-2015.
U. Rott, H. Kauffmann; A contribution to solve the arsenic problem in groundwater of Ganges Delta by in-situ treatment. Water Sci Technol 1 November 2008; 58 (10): 2009–2015. doi: https://doi.org/10.2166/wst.2008.751
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