Hydrogeochemical perspective to assess groundwater contamination within the aquifer below the landfill site
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2003
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/26353/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=9373 |
Daftar Isi:
- An investigation was carried out at Astrolabe Park Landfill, an unlined landfill located in the Botany Sands Aquifer, Southern Sydney. The primary objective of this research is to assess the vertical and horizontal trends of chemical constituent in the leachate plume within the groundwater. Two bundled-piezometers along flowpath were sampled to achieve changes downgradient the landfill. Data analysis has demonstrated that the centre of the leachate plume is located at the shallow depth between 3 to 6 meters below the ground surface. Five hydrogeochemical processes are well confirmed to affect the concentration of the chemical constituents within the leachate plume such as dissolution-precipitation, reduction, ion-exchange, mixing as well as adsorption processes are active in the contaminated groundwater. Moreover, the occurrence of organic clay/peat layer is responsible to decrease most of the chemical constituent at some depths. Along the flowpath, some internal and external factors change the chemical composition downgradient the landfill such as dilution and dispersion, grass watering, the occurrence of continuous layer of pyrite-bearing and nitrogen-based fertilizers on the golf course around the landfill site. Keywords : groundwater, contamination, landfill, hydrogeochemical processes