بررسي كيفيت و تعيين انديس هاي پايداري منابع آب شرب روستاهاي استان قم Quality evaluation and stability index determination of Qom rural drinking water resources

روشنک رضايي کلانتري, علی آذری, احسان احمدي, محمد احمدي جبلي

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چکیده

ABSTRACT

Background and Aims: Corrosion and scaling are among the problems that despite science advancement,

water facilities are still faced it. Corrosion lead to financial and health losses on water supply system and

consumer, scaling also causes clogging and head loss in water supply network. Therefore, the aim of this

study is to determine the corrosion and scaling potential of Qom villages water supply sources.

Materials and Methods: In cross-sectional study 100 samples in 12 months from 2011 to 2012 were

collected to verify the water quality according to 1053 standard of Institute of Standards and Industrial

Research of Iran (ISIRI). Then water corrosion and scaling were studied using Langelier, Ryznar, Aggressive

and Puckorius indexes.

Results: The results showed that the Langelier index, Reynar index, aggressive or corrosion index and

index Puckorius were -1.62 (±0.11), 10.5 (±0.17), 12.03 (±0.14) and 9.92 (±0.13) respectively. Physical

and chemical parameters of the water showed that the mean pH, TDS, total hardness, turbidity, calcium,

magnesium, fluoride, sodium, ammonia, phosphate, and chloride were 7.27, 1205.29 mg/L, 435.661 mg/L

CaCO3, 0.747 NTU, 132.29 mg/L, 25.58 mg/L, 0.68 mg/L, 245.50 mg/L, 0.015 mg/L, 0.17 mg/L and 231.22

mg/L respectively.

Conclusion: The amounts of color, TDS, turbidity, pH, calcium, magnesium, fluoride and ammonia in the

study areas are in satisfactory and acceptable status compared to the internal standard but the amount of

phosphate, hardness and chloride in this area were exceeded from permissible limit. Comparison of four

stability index also showed that water conditions in all parts of this study are located in corrosive range.

Key words: Drinking water, Villages of Qom province, Stability index

*Corresponding Author:

MSc student of Environmental Health Engineering, Member of Student’s Scientific Research Center (SSRC), Tehran

University of Medical Sciences, Tehran, Iran

Email: ali_azari67@yahoo.com

Received: 12 Oct. 2013

Accepted: 6 Jan. 2014

تمام متن:

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