Influence of impressed current cathodic protection systems on chemical characteristics of underground water
| Autor: | Morteza Banihashemi, Parinaz Soleimani, Kourosh Esfandiari |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
02 engineering and technology
010501 environmental sciences engineering.material Iran 01 natural sciences Corrosion Cathodic protection 020401 chemical engineering Metals Heavy Environmental Chemistry 0204 chemical engineering Waste Management and Disposal Dissolution Electrodes Groundwater Ecosystem 0105 earth and related environmental sciences Water Science and Technology geography geography.geographical_feature_category Ecological Modeling Metallurgy Total dissolved solids Pollution Anode engineering Environmental science Cast iron Water Pollutants Chemical Water well Environmental Monitoring |
| Zdroj: | Water environment research : a research publication of the Water Environment FederationReferences. 92(12) |
| ISSN: | 1554-7531 |
| Popis: | Despite well-known corrosion inhibition behavior of cathodic protection (CP) system, this process might be a potential hazard to surrounding ecosystem resulted mostly from continuous electrical current which is applied to the adjacent environment and metallic anode dissolution as well. In this research, deepwater CP wells at different locations of Golestan province, Iran, were taken into consideration to evaluate the impact of these protective systems on underground waters from viewpoint of chemical and physicochemical characteristics resulted from anode dissolution. For this purpose, concentration of metallic constituents of the anode as well as the amount of pH, total dissolved solids (TDS), electrical conductivity (EC), and total hardness were determined. On the basis of obtained results, the concentration of Mn, Cr, and Fe in CP well located nearby an industrial district (i.e., 0.087, 0.475, and 8.5 mg/L, respectively) was higher than both WHO and USEPA standards. This fact can be resulted from the position where the well was dug as well as the CP anode dissolution within the deep CP water wells. PRACTITIONER POINTS: The impact of impressed current cathodic protection (ICCP) system on chemical and physicochemical characteristics of underground water has been evaluated. Anode dissolution of ICCP systems influences the water characteristics nearby the anodes. Despite low dissolution rate of high silicon cast iron anodes, their long-term utilization might be harmful for adjacent ecosystem. The amount of heavy metals in underground waters was demonstrated to be influenced by the employment of ICCP system. Both anode dissolution and the geological properties of the Earth`s crust surrounding the wellbore might be responsible for significant increase of heavy metals concentration. |
| Databáze: | OpenAIRE |
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