title: Evaluation of corrosion and scaling tendency indices in a drinking water distribution system: a case study of Bandar Abbas city, Iran.
abstract: Corrosion and scaling is a major problem in water distribution systems, thus evaluation of water corrosivity properties is a routine test in water networks. To evaluate water stability in the Bandar Abbas water distribution system, the network was divided into 15 clusters and 45 samples were taken. Langelier, Ryznar, Puckorius, Larson-Skold (LS) and Aggressive indices were determined and compared to the marble test. The mean parameters included were pH (7.8 ± 0.1), electrical conductivity (1,083.9 ± 108.7 μS/cm), total dissolved solids (595.7 ± 54.7 mg/L), Cl (203.5 ± 18.7 mg/L), SO₄(174.7 ± 16.0 mg/L), alkalinity (134.5 ± 9.7 mg/L), total hardness (156.5 ± 9.3 mg/L), HCO₃(137.4 ± 13.0 mg/L) and calcium hardness (71.8 ± 4.3 mg/L). According to the Ryznar, Puckorius and Aggressive Indices, all samples were stable; based on the Langelier Index, 73% of samples were slightly corrosive and the rest were scale forming; according to the LS index, all samples were corrosive. Marble test results showed tested water of all 15 clusters tended to scale formation. Water in Bandar Abbas is slightly scale forming. The most appropriate indices for the network conditions are the Aggressive, Puckorius and Ryznar indices that were consistent with the marble test.
authors.affiliation: Hormozgan Environmental and Occupational Health Engineering Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran E-mail: rezael2000@yahoo.com; Department of Environmental Health Engineering Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
authors.forename: Vali
authors.initials: V
authors.lastname: Alipour
authors.affiliation: Hormozgan Environmental and Occupational Health Engineering Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran E-mail: rezael2000@yahoo.com; Department of Environmental Health Engineering Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
authors.forename: Kavoos
authors.initials: K
authors.lastname: Dindarloo
authors.affiliation: School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Amir Hossein
authors.initials: AH
authors.lastname: Mahvi
authors.affiliation: Hormozgan Environmental and Occupational Health Engineering Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran E-mail: rezael2000@yahoo.com.
authors.forename: Leila
authors.initials: L
authors.lastname: Rezaei
mesh_terms: D002118:Calcium / Q000032:analysis; D002254:Carbonates / Q000032:analysis; D002712:Chlorides / Q000032:analysis; D002947:Cities; D003343:Corrosion; D060766:Drinking Water / Q000032:analysis*; D004553:Electric Conductivity; D006863:Hydrogen-Ion Concentration; D007492:Iran; D013431:Sulfates / Q000032:analysis; D014881:Water Supply / Q000032:analysis*
chemical_list: D002254:Carbonates; D002712:Chlorides; D060766:Drinking Water; D013431:Sulfates; D002118:Calcium