Naslov (eng)

Evaluating corrosion and incrustation risks in selected wells in Danube Alluvium

Autor

Obradović, Vesna
Pajić, Predrag
Perović, Marija

Publisher

Opis (eng)

The determination of corrosion and incrustation risks in drainage wells is crucial for the maintenance of water extraction infrastructure, ensuring the required efficiency in groundwater levels maintaining, and safeguarding the functionality and longevity of water extraction systems. Analytical methods have long been established for assessing water aggressiveness, providing insights into the groundwater environment susceptibility to corrosion or incrustation of underground structures. The assessment of groundwater aggressiveness is facilitated by the Langelier (LSI) and Ryznar indices (RSI), while Johnson's Classification aids in understanding incrustation phenomena. Based on conducted groundwater sampling campaign in 2021, for four drainage wells in Danube alluvium, the risks of chemical corrosion and incrustation were calculated. Revealed results indicated that groundwater was characterised with oxygen level of 2.5 mg/l – 3.75 mg/l and redox values in range of 362 mV to 583 mV, with very variable iron content. Based on the negative LSI values, examined groundwater from B-1, B-2, and B-4 is undersaturated and tends to dissolve calcium carbonate. The calculated indices for B-3 suggest mild incrustation tendencies, indicating a propensity for carbonate precipitation. Groundwater in zone B-4 stood out as highly corrosive. Saturation indices indicated groundwater tendencies towards either calcium carbonate dissolution or precipitation. The choice of construction materials significantly influences corrosion susceptibility, necessitating pre-emptive measures. Understanding groundwater behavior regarding scaling and corrosion is pivotal for effective prevention and maintenance planning. By implementing tailored strategies, such as pH adjustment and corrosion-resistant coatings, the detrimental effects of scaling and corrosion can be mitigated, ensuring the longevity of drainage well systems and minimizing operational costs. Regular monitoring of groundwater chemistry enables timely interventions, fostering sustainable water management practices.

Jezik

engleski

Datum

2024

Licenca

© All rights reserved

Predmet

groundwater, corrosion, incrustation, Langelier, Ryznar

Deo kolekcije (1)

o:243

Institut za vodoprivredu "Jaroslav Černi"