Evaluation of the Physical, Chemical and Microbial Qualities of Desalination Water Provided by the Private Sector in Saveh

Objectives Based on the significant progress made on the field of membrane technology, the application of this technology has rapidly increased. The current study aimed at assessing the physicochemical and microbial quality of the desalinated water provided by the private sector (Esin) in Saveh, Iran. The results of the current study were compared with the guidelines of Institute of Standards and Industrial Research of Iran (ISIRI).
Methods A finite time service was studied based on a total of 15 samples a day. The period of study was about 7 months from 2014 to 2015. Physical and chemical tests were performed according to the standard methods of water and wastewater. Total coliform bacteria and fecal coliform tests were conducted by multiple tube fermentation method and the total number of heterotrophic bacteria was investigated by the pour plate method.
Results Results showed the values of physical parameters as turbidity 0.10 (nephelometric turbidity units) NTU, chemical parameters as electrical conductivity (μs/cm), total hardness, calcium (CaCO3) hardness, magnesium hardness, alkalinity, calcium, magnesium, fluoride, phosphate, nitrate, nitrite, sulfate, potassium, sodium, chloride, and residual chlorine (mg/L), and pH were 476, 103.06,78.89, 9.80, 76.42, 37.28, 2.45, 0.11, 0.10, 8.3, 0.003, 37.71, 0.37, 68.23, 62.19, 0.74, and 7.60, respectively. Values of microbial parameters were total coliform 0, fecal coliform 0, manufacturer part number (MPN)/100 mL, and heterotrophic plate count (HPC) 2.5 CFU/mL.
Conclusion The obtained results indicated that the quality of desalinated water provided from the water desalination plant of Saveh is approved and no health threatening factor was found. The concentration of measured parameters in the study was satisfactory and acceptable, based on IRISI guidelines.