Assessment of corrosion and scaling potential of the groundwater in the Thanjavur district using hydrogeochemical analysis and spatial modeling techniques

Abstract

In this study, corrosiveness and scaling potential of groundwater in the Thanjavur district are evaluated based on the chemical analyses of 34 groundwater samples and GIS-based geostatistical mapping techniques. Total dissolved solid values show that six out of 34 samples exceeded the WHO drinking water standard 1000 mg/L. Piper plot shows that majority of the samples are mixed Ca-Mg-Cl type, Ca-HCO 3 type and Na-Cl. The results of the physicochemical parameters were used to calculate the most popular corrosion and scaling indices such as Langelier index (LI), aggressive index (AI), Ryznar index (RI), Puckorius index (PI) and Larson-Skold index (LS). Results of LI show that 41% samples have corroding tendency (LI < 0) and 59% of the samples have scaling tendency (LI > 0). AI has the same result as 41% of the water is moderately corrosive and the remaining has scaling tendency. RI suggests that 88% of the samples have corrosive tendency and 12% have rigorous corrosive tendency. Values of the PI suggest that all the samples were corrosive. Finally, the LS values show that 62% of the samples have scaling tendency and the remaining have corrosion tendency. In general, groundwater in the Thanjavur district shows both corrosive and scaling tendencies, which can cause severe damage to the machineries in the industries. Spatial variation of the corrosive and scaling indices suggests that the central region of the district has more corrosive tendencies and the western and eastern regions have more scaling tendencies.

Investigation of Wabe River water fitness for agricultural and industrial purposes

“…However, the three indices' findings are crucially indicating that natural water resources are more corrosive than they are encrustation-prone. Several studies have reported similar findings in the literature ( Abbasnia et al., 2018 ; Aghazadeh et al., 2017 ; Mankikar, 2021 , Sajil Kumar, 2019 ; Egbueri, 2022 ) that water resources predict greater corrosion risks than scaling risks. This indicates the Wabe river water is not suitable for industrial process without treatment ( Zhou et al., 2020 ).…”

Assessment of Corrosion Properties of Selected Mineral Waters

“…The mentioned research shows the need for the broad characterization of mineral water compositions, including their aggressiveness concerning different materials, using the analyzed indices, which in turn will help to establish criteria for categorizing stability of the water [42,43]. The development of material science is dynamic, and its effect is the production of increasingly new materials, which are systematically introduced in the construction of water supply networks [44,45]. When introducing new materials for the construction of water supply networks, it should be taken into account that these materials require a completely new approach at the planning stage of construction, the construction itself, or during testing of the condition of the water supply network in comparison with the materials used so far [12].…”

Characterization of the Hydrochemistry, Scaling and Corrosivity Tendencies, and Irrigation Suitability of the Water of the Rivers Karawa and Iyiaji

“…When the value of LSI is greater than zero, it shows the water is supersaturated and has the potential to scale as well as tends to precipitate CaCO3 [62]. The calculated LSI value of the Rivers Karawa and Iyiaji in both EDS and LDS revealed that the water has the potential for scaling (Table 7).…”

“…The Ryznar stability index (RSI) has also been found very useful as a predictive model for scaling and corrosivity tendency in a water distribution network. Following the RSI classification criteria [62], 100% of the water samples indicated rigorous corrosive tendencies (RSI ≥ 8.5). This observation negatively correlates with the obtained results of Omeka et al [36].…”