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Title: ARSENIC REMOVAL FROM GROUNDWATER BY COAGULATION PROCESS: PERFORMANCE AND LIMITATIONS INFLUENCED BY THE GROUNDWATER SOURCES CHEMISTRY USED FOR DRINKING WATER PURPOSE IN THE WEST REGION OF ROMANIA
ARSENIC REMOVAL FROM GROUNDWATER BY COAGULATION PROCESS: PERFORMANCE AND LIMITATIONS INFLUENCED BY THE GROUNDWATER SOURCES CHEMISTRY USED FOR DRINKING WATER PURPOSE IN THE WEST REGION OF ROMANIA

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Pacala Adina
10.5593/sgem2024v/3.2/s11.03
10.5593/sgem2024v/3.2
1314-2704
978-619-7603-76-7
English
24
3.2
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Hydrology, Water Resources, and Climate Resilience
Arsenic (As) contaminated groundwater is a critical issue of concern, in view of its toxicity through drinking water and health impacts on the human body. In this regard, the World Health Organization (WHO, 1993) has recommended 10 ?g/L for dissolved As concentration in water as standard value for drinking purposes. Special attention should be paid to the monitoring the quality of the groundwater, the chemistry and composition of arsenic-contaminated water are the major factors, determining the applied technologies for removal of arsenic. The coagulation-flocculation process is well known as physico-chemical technique for As removal, which provides high removal efficiency, even at high concentrations of As(V). This method have many advantages: high stability, low cost, simple operation and fast sedimentation. This paper examines the current scenario of arsenic contamination of groundwater in the West Region of Romania, and evaluate the As removal performances and limitation of different coagulants used, their operating conditions, properties, and efficiencies. The coagulation experiments were conducted through the Jar test, which simulates three steps including coagulation, flocculation, and settling. The coagulants tested comparatively were ferric and aluminum-based coagulants, respectively ferric chloride, ferric sulfate, aluminum sulfate and polyaluminum chloride. Better coagulating performance of the ferric salts compared with the aluminum salts has been confirmed due to their higher density of adsorption.
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[10] Order 621/07.07.2014 regarding the approval of the threshold values for ground-water in Romania, Official Monitor 535/18.07.2014, Romania, 2014;
[11] Ordinance 7/18.01.2023 regarding the quality of water intended for human con-sumption, Official Monitor 63/25.01.2023, Romania, 2023;
[12] Directive 2006/118/EC of the European Parliament and of the Council of 12.12.2006 on the protection of groundwater against pollution and deterioration, 2014;
[13] Guidelines for drinking-water quality: fourth edition Incorporating the first and second addenda. Chemical fact sheets: Arsenic, World Health Organization, 2022;
[14] Directive (EU) 2020/2184 of the European Parliament and of the Council of 16 December 2020 on the quality of water intended for human consumption, Bruxelles: Official Journal of European Union, OJ L 435, 23.12.2020, pp 1-62, 2020.
This work was carried out through the “Nucleu” Program within the National Research Development and Innovation Plan 2022-2027 with the support of Romanian Ministry of Research, Innovation and Digitalization, contract no. 3N/2022, Project code PN 23 22 03 03.
conference
https://doi.org/10.5593/sgem2024v/3.2/s11.03
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 27 - 30 November, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
19-26
27 - 30 November, 2024
website
10049
arsenic removal, coagulation, groundwater treatment, drinking water.

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