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A platform for research: civil engineering, architecture and urbanism
Improving Low-Lying Acidic Floodplains for Infrastructure Development
https://orcid.org/http://orcid.org/0000-0002-2510-4485
https://orcid.org/http://orcid.org/0000-0002-9057-1514
In coastal Australia, shallow pyrite deposits (FeS2) in low-lying terrains oxidise to produce sulfuric acid that pollutes the soil and groundwater, thus adversely affecting the environment, coastal development, fisheries, and agricultural development. Permeable Reactive Barrier (PRB), an underground granular filter, is a practical engineering technique that neutralises groundwater acidity. Two pilot-scale PRBs were installed in the lower Shoalhaven floodplain, NSW, Australia, to treat the acidic water using alkaline aggregates as the reactive material. However, during the treatment of contaminated groundwater, the entrapment of biomass generated by bacteria and secondary mineral precipitates within the granular matrix reduces the hydraulic conductivity and porosity of the PRB and affects its longevity. Real-time monitoring data of the field PRB and its clogging patterns along the centreline of the PRB are discussed in this paper. Clogging and armouring were non-homogeneous along the flow path, and the acid neutralisation capacity at the inlet of the PRB decreased by 31% in 15 years due to clogging, but only a 6% reduction was observed at the outlet.
Improving Low-Lying Acidic Floodplains for Infrastructure Development
https://orcid.org/http://orcid.org/0000-0002-2510-4485
https://orcid.org/http://orcid.org/0000-0002-9057-1514
In coastal Australia, shallow pyrite deposits (FeS2) in low-lying terrains oxidise to produce sulfuric acid that pollutes the soil and groundwater, thus adversely affecting the environment, coastal development, fisheries, and agricultural development. Permeable Reactive Barrier (PRB), an underground granular filter, is a practical engineering technique that neutralises groundwater acidity. Two pilot-scale PRBs were installed in the lower Shoalhaven floodplain, NSW, Australia, to treat the acidic water using alkaline aggregates as the reactive material. However, during the treatment of contaminated groundwater, the entrapment of biomass generated by bacteria and secondary mineral precipitates within the granular matrix reduces the hydraulic conductivity and porosity of the PRB and affects its longevity. Real-time monitoring data of the field PRB and its clogging patterns along the centreline of the PRB are discussed in this paper. Clogging and armouring were non-homogeneous along the flow path, and the acid neutralisation capacity at the inlet of the PRB decreased by 31% in 15 years due to clogging, but only a 6% reduction was observed at the outlet.
Improving Low-Lying Acidic Floodplains for Infrastructure Development
https://orcid.org/http://orcid.org/0000-0002-2510-4485
https://orcid.org/http://orcid.org/0000-0002-9057-1514
In coastal Australia, shallow pyrite deposits (FeS2) in low-lying terrains oxidise to produce sulfuric acid that pollutes the soil and groundwater, thus adversely affecting the environment, coastal development, fisheries, and agricultural development. Permeable Reactive Barrier (PRB), an underground granular filter, is a practical engineering technique that neutralises groundwater acidity. Two pilot-scale PRBs were installed in the lower Shoalhaven floodplain, NSW, Australia, to treat the acidic water using alkaline aggregates as the reactive material. However, during the treatment of contaminated groundwater, the entrapment of biomass generated by bacteria and secondary mineral precipitates within the granular matrix reduces the hydraulic conductivity and porosity of the PRB and affects its longevity. Real-time monitoring data of the field PRB and its clogging patterns along the centreline of the PRB are discussed in this paper. Clogging and armouring were non-homogeneous along the flow path, and the acid neutralisation capacity at the inlet of the PRB decreased by 31% in 15 years due to clogging, but only a 6% reduction was observed at the outlet.
Improving Low-Lying Acidic Floodplains for Infrastructure Development
Lecture Notes in Civil Engineering
Rujikiatkamjorn, Cholachat (editor) / Xue, Jianfeng (editor) / Indraratna, Buddhima (editor) / Medawela, Subhani (author) / Indraratna, Buddhima (author)
International Conference on Transportation Geotechnics ; 2024 ; Sydney, NSW, Australia
2024-10-22
9 pages
Article/Chapter (Book)
Electronic Resource
English
Geo-Environmental Approaches for the Remediation of Acid Sulphate Soil in Low-Lying Floodplains
| British Library Conference Proceedings | 2011
| British Library Online Contents | 2001
| British Library Conference Proceedings | 1997
Impacts of Acidic Soil on Infrastructure Development
| Springer Verlag | 2024
| British Library Conference Proceedings | 1997