Popis: |
Landfills are regarded most cost effective and accomplishable operation for managing waste in numerous parts of the world. Inspite of many merits, it gives rise to remarkable menace to different domains of the environment owing to the existence of noxious inanimate and animate components in the leachate and imperfectly evolved solid refuse handling techniques. Water is indispensable for bolstering existence, growth, and the environment and is one of the fundamental indicator of fiscal expansion and communal opulence of a country. Percolation of noxious substances from unscientific dumpsites is among the main environmental consequences of these landfills in majority of the progressing countries like India. Leachate serves as a prominent point source of contamination in many environmental media like soil, ground water and surface water around the world. So the prime issues humans are experiencing are associated with water quality. Thus the investigation was accomplished to investigate the impact of leachate from Achan landfill on surface water quality in Temperate Himalayas. Monitoring was done during all the four seasons viz, spring, summer, autumn and winter. Leachate outflow site was found to have highest mean value of pH (8.4), EC (4.50), total Nitrogen (3.55), P (5.78),K (1.90), Ca (114.40), Mg (60.35), Fe (2.25), Cu (0.84), Mn (1.03), BOD (29.32), COD (95.68), temperature (20.23), NTU (19.70) during summer season, while as lowest mean values of EC (0.12), total Nitrogen (0.79), P (2.19),K (0.25), Ca (43.06), Mg (21.83), Fe (0.67), Cu (0.25), Mn (0.30), BOD (6.08), COD (24.55), temperature (3.56), NTU (1.78) were recorded at control site during winter season. From the study we concluded that a decreasing trend was observed during all the seasons in the concentration of all physico chemical paramaters with increase in distance from landfill. So it is recommended that the leachate should be treated at source before disposing into the water body and landfill should be lined properly to prevent the entry of leachate into water sources. |