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Evaluation of Surface Water Pollution from an Operation at Controlled Dumpsite: A Case Study in Samutprakarn Province, Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Nittaya Pasukphun 2. Tanika Tingsa 3. Yanasinee Suma |
| Title | Evaluation of Surface Water Pollution from an Operation at Controlled Dumpsite: A Case Study in Samutprakarn Province, Thailand |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2566 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 16 |
| Journal No. | 3 |
| Page no. | 133-145 |
| Keyword | Water pollution, Dumpsite, Landfi ll, Heavy metal |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1718 |
| Abstract | Both engineered and non-engineered landfi lls are used for the disposal of solid waste. Although modern landfi lls are designed to reduce the negative eff ects of waste, the generation of leachate remains a problem for landfi lls due to the potential contamination of groundwater and surface water caused by seepage and diff usion of leachate through soil. Moreover, it is unfortunate that open dumpsites, which are unregulated and illegal landfi lls, are common in many developing countries. This study aims to assess the impact of leachate from a controlled dumpsite operation in a municipal solid waste landfi ll on surface water. The study analyzes the main physicochemical, chemical, and heavy metal parameters of surface water samples during the rainy and dry seasons to evaluate the extent of pollution caused by the controlled dumpsite. The surface water samples from various locations surrounding the controlled dumpsite were found to be polluted by leachate. The winter season showed higher pH, BOD5 and COD levels in the surface water compared to the rainy season through surface runoff in the surrounding areas. The ratios of BOD5 and COD in the surface water from four sites near the controlled dumpsite were in the range of 0.51 - 0.89, indicating the controlled dumpsite being in mature stages that can be in the acceptable toxin range; however, its BOD5 /COD ratios tended to be more toxic as they decreased in summer and rainy season. The heavy metals with the highest average level in the surface water were Fe, followed by Cr, Cd, Ni, Mn, Zn, Pb, and As, respectively. In addition, every water source had Cr, Cd and Ni concentrations much higher than the WHO standards (exceeding 0.05 mg/L, 0.003 mg/L and 0.02 mg/L, respectively) at the average concentration of 2 mg/L, 0.56 mg/L and 0.48 mg/L, respectively. The results indicated that the leachate from the controlled dumpsite had a detrimental impact on surface water quality due to lack of engineered liners and adequate leachate collection systems. Consequently, there is movement of toxic leachate from leachate ponds with inadequate or no liner into groundwater and surface water. |
