Abstract:Within the German-Vietnamese joint research project -Integrated Water Resources Management Vietnam‖, Planning and Decision Support Tools on a regional scale are being developed. A Water Balance Tool is utilized to calculate and assess water demands and compares these with the quantity of water resources to identify surpluses or deficits. The sensitivity of water resources and the contamination potential are combined to display water quality aspects within a Contamination Risk Tool. A resulting evaluation is carried out with a Ranking Tool. It identifies areas with high priority need for action. The Planning and Decision Support Tools are being discussed with Vietnamese institutions and authorities.
Mining is usually associated with draining of large quantities of water. On the other hand, mining operations themselves are water users for purposes like coal or ore washing, dust mitigation, recultivation, etc. The normally existing water surplus can be seen as a resource for public purposes instead of discharging the water to rivers and the sea. It is typical for the mining operation that these water amounts vary spatio-temporally according to the mining process. The R&D project WaterMiner investigates the example of the Hon Gai hard coal mining area in Ha Long, Vietnam, as to how and to what extent under the variable spatio-temporal conditions the mine water can cover the water demand in the mines themselves and contribute to the public water supply in the surrounding settlement area of Hon Gai. The spatio-temporal change of mine water drainage, mine water treatment and mine-internal water use and the potential mine-external water use volumes in the project region are investigated by a material flow model and visualized by Sankey diagrams, maps, and tables. Several options for delivery of mine water for mine-external water uses as a contribution to the public water supply are shown.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.