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| Titel: |
A Comparative Study of Household Groundwater Arsenic Removal Technologies and their Water Quality Parameters |
| Auteur: |
Hossain K.M. Delowar Imtiaz Uddin W.H. Abou EL Hassan Mst. Farida Perveen M. Irshad A.F.M. Saiful Islam Isao Yoshida |
| Verschenen in: |
Journal of applied sciences |
| Paginering: | Jaargang 6 (2006) nr. 10 pagina's 2193-2200 |
| Jaar: |
2006 |
| Inhoud: |
Groundwater arsenic contamination is one of the most important concerns in Bangladesh. We performed a comparative study of three available groundwater arsenic removal methods used in Bangladesh. Among the three methods, the Three-Pitcher system removed arsenic up to 96% whereas AAN-Filter and NIFSF methods removed arsenic 88 and 84%, respectively. The arsenic removal efficiency and water flow rate decreased significantly after three-month continuous operation in Three-Pitcher and AAN Filter methods and two-month continuous operation for NIFSF method. Calcium concentration was decreased to half by Three-Pitcher and AAN Filter methods but increased substantially in the NIFSF method due to the addition of bleaching powder. Anion concentrations in the filtered water changed in both directions. A significant increased in chloride was found in NIFSF water probably due to the chlorination of bleaching powder. Total Dissolved Solid (TDS) decreased 63 and 58% in Three-Pitcher and AAN Filter methods, respectively and increased 25% in NIFSF method. Considering all of the parameters, Three-Pitcher method was the best, but the others were effective, too. The choice of methods largely depends on the socio-economic conditions of the rural people. Before recommending any method for large-scale use in arsenic removal, further study needs to be done. |
| Uitgever: |
Asian Network for Scientific Information, Pakistan (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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