Corrosion and Scaling Potential in Drinking Water Distribution of Babol, Northern Iran Based on the Scaling and Corrosion Indices

Abstract

Water corrosion and scaling is a phenomenon caused by the contact of materials with surrounding environment (1,2). This phenomenon has been studied in two important branches including erosion and electrochemical corrosions (3). The first type is a degradation of materials by physical factors such as the impact of suspended solids in water or wastewater pipes (4,5). The second type includes producing an electric cell and performing electrochemical reactions between the surrounding environment of pipelines, facilities and constructed materials. Electrochemical corrosion occurs in water transmission and distribution lines due to the nature of the process in metallic materials such as steel pipes (4,6).

A Critical Review on Corrosion and Fouling of Water in Water Distribution Networks and Their Control

“…The rate of fouling enhances with increasing temperature and salt concentration. 34 Sedimentation reduces the amount of water flow inside pipes, reduces heat transfer, increases pressure drop and energy required for pumping, clogs pipes and increases the cost of operation and maintenance of water supply facilities. The effective factors in the occurrence of deposits and clogging of pipes are a function of temperature, pH and concentration of dissolved solids.…”

A Novel of Internal Corrosion Assessment Methods on Drinking Water Distribution Pipelines

“…The water condition described as the corrosion index which can cause corrosion impact to the pipe walls. Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Larson-Skold (LS), Puckorius Index Scaling (PSI) and Aggressive Index (AI), are usually used to determine whether water flowing in a pipe affects corrosion or forms a water sediment on a pipe wall [19] [20].…”