Investigating Corrosion and Scaling Indices of Potable Water in City of Pardis Water Treatment Plant

Investigating the corrosion and scaling indices of water is one of the effective strategies to manage the potable water resources. Water corrosion, will cause economic damages, reduce the useful life of water supply facilities and spread diseases among consumers. The aim of this study is to investigate the chemical parameters and assess the corrosion potential of potable water in Pardis City. Samples were collected from five wells around the Jajroud River and the reservoir correspondent to intake from the Latian dam for one year. Then corrosion potential of water determined based on Langelier, Ryznar, corrosion, Porkorios and Larson indices through qualitative parameters such as pH, TDS, total and permanent hardness, alkalinity and the anion concentrations in water samples. All the tests were done according to the standard methods mentioned in the standard handbook of water and wastewater analysis methods. According to the results, the inflowing water was slightly corrosive which suggests to use resistant materials in the distribution network or covering the inner wall of the transmission water pipes. It should be noted that the treated water showed scaling potential and has an acceptable quality.