Implementations of Riga city water supply system founded on groundwater sources

3rd International Conference on Innovative Materials, Structures and Technologies

Lace, I.^1 ; Krauklis, K.^1 ; Spalvi, A.^1 ; Laicans, J.^2

Environment Modelling Centre, Riga Technical University, Daugavgrivas str. 2, LV-1007, Riga, Latvia^1

SIA aqua-Brambis, Skolas str. 21-412, Riga

LV-1010, Latvia^2

关键词: City water supplies;    Groundwater sources;    Groundwater supply;    Groundwater wells;    Hydrogeological;    Surface water sources;    Technical universities;    Water distribution networks;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/251/1/012131/pdf
DOI  :  10.1088/1757-899X/251/1/012131

来源: IOP

【 摘 要 】

Drinking water for Riga city is provided by the groundwater well field complex "Baltezers, Zakumuiza, Rembergi" and by the Daugava river as a surface water source. Presently (2016), the both sources jointly supply 122 thous.metre3day-1of drinking water. It seems reasonable to use in future only groundwater, because river water is of low quality and its treatment is expensive. The research on this possibility was done by scientists of Riga Technical university as the task drawn up by the company "Aqua-Brambis". It was required to evaluate several scenario of the groundwater supply for Riga city. By means of hydrogeological modelling, it was found out that groundwater well fields could provide 120-122 thous.metre3day-1of drinking water for the Riga city and it is possible further not to use water of the Daugava river. However, in order to provide more extensive use of groundwater sources, existing water distribution network shall be adapted to the change of the water sources and supply directions within the network. Safety of water supply shall be ensured. The publication may be of interest for specialists dealing with problems of water supply for large towns.