DBPapers
DOI: 10.5593/SGEM2014/B31/S12.026

DECISION SUPPORT TOOLS FOR WATER QUALITY MANAGEMENT

M. Cheveresan, C. Dinu, R. Drobot
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-13-1 / ISSN 1314-2704, June 19-25, 2014, Book 3, Vol. 1, 199-206 pp

ABSTRACT
This paper presents two powerful tools for decision support systems that could help to mitigate accidental pollution effects: a Mike 11 Advection Dispersion model and an ArcGIS Online web application. Modeling of the water quality was done on a stretch of approximately 30 kilometers, downstream Glina, Bucharest’s waste water treatment plant situated on Dambovita river up to the junction with Arges river. The waste water from over 2 million inhabitants of the capital is treated only at Glina WWTP. In case of a breakdown a serious pollution may occur affecting the ecological system on Dambovita river, downstream Bucharest, leading also to the closure of some settlements water intakes. In this perspective four model scenarios were created to determine what are the concentrations of different constituents along the river stretch and the propagation time in the following cases: a. Glina WWTP breakdown during dry operation period; b. during torrential rains when waste water discharges bypass Glina WWTP due to its limited capacity; c. “case a” using additional dilution discharges from the reservoirs located on Dambovita tributaries downstream Glina WWTP; d. “case b” with additional dilution discharges as in “case c”. The results from all four scenarios with time series concentrations for the considered constituents were included in an ArcGIS Online web application developed for water boards and interested stakeholders. The information shared via ArcGIS Online is represented as water quality maps, with animations and offers a fast solution to disseminate modeling results.

Keywords: modeling accidental pollution, Mike 11, advection dispersion module, web application, ArcGIS Online