بررسی شاخص‌های خورندگی و رسوب‌گذاری آب شرب روستاهای استان خراسان رضوی

نوع مقاله: مقالات پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران.

2 استادیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران،ایران

3 دانشجوی کارشناسی ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران

چکیده

زمینه و هدف:خورندگی، یکی از پیچیده‌ترین و پرهزینه‌ترین مشکلات مربوط به تولید آب آشامیدنی است. فرآیند خورندگی باعث ایجاد مشکلاتی نظیر ایجاد حفره در لوله‌ها، کاهش طول عمر تأسیسات و هدررفت آب می‌شود که هزینه‌های زیادی را به‌دنبال خواهد داشت، لذا مطالعه حاضر با هدف تعیین شاخص‌های خورندگی و رسوب‌گذاری منابع آب تأمین کننده روستاهای شهرستان‌های خراسان رضوی انجام شد.
روش‌کار:در این مطالعه مقطعی 879 نمونه آب شرب از 220 روستا در سال 1392 به منظور بررسی خصوصیات کیفی آب برداشت و بر اساس روش‌های مندرج در کتاب مرجع آزمایش‌های آب و فاضلاب مورد آنالیز قرار گرفت. سپس پنج شاخصلانژلیه، رایزنر، پوکوریوس، لارسون- اسکولدو شاخص تهاجمدر نرم‌افزار اکسلبرنامه‌نویسی شد و سپس خورندگی و رسوب‌گذاری آب روستاهای شهرستان‌های خراسان رضوی تعیین شد.
یافته‌ها: بر اساس نتایج این مطالعه شاخص لانژلیه 0/14±/33، شاخص 0/37±7/36، شاخص پوکوریوس 0/16±7/4، شاخص لارسون - اسکولد 1/4±2/1و شاخص تهاجمی 0/18±12/03بود.
نتیجه‌گیری: مقایسه 5 شاخص پایداری نشان داد وضعیت آب در بخش‌های مورد مطالعه در محدوده خورنده می‌باشد. بر اساس شاخص لانژلیه، آب در تمامی مناطق رسوب‌گذار می‌باشد، لذا برای کاهش خورندگی و مواد جانبی حاصل از آن و آسیب‌های بهداشتی و اقتصادی آن اقدامات لازم ضروری است.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of corrosion and scaling indices of drinking water in the villages of Khorasan Razavi province

نویسندگان [English]

  • Majid Mirzabeygi 1
  • amirhossein Mahvi 2
  • Mozhgan Naji 1
  • Abbas Abbasnia 3
1 M.Sc.Student Environmental Health Engineering , School of public Health.Tehran University of Medical Science, Tehran,Iran
2 Assistant Professor, Department of Environmental Health Engineering,School of public Health.Tehran University of Medical Science,Tehran,Iran
3 M.Sc.Student Environmental Health Engineering , School of public Health.Tehran University of Medical Science, Tehran,Iran
چکیده [English]

Background & Objective:One of the most complicated and costly problems associated with drinking water providing, is called as corrosion. Corrosion processes can cause pitting problems, reducing lifetime of water utilities and loss of water which can lead to high cost. Therefore the aim of this study is to determine the corrosion and scaling indices of rural drinking water resources of Khorasan Razavi.

Material &  Methods:In this cross sectional study to evaluate water quality characteristics in the Khorasan Razavi resources, 879 samples were taken during 2013 were analyzed based on standard manual method book. Five indices including Langlier, Ryznar, Puckorius, Larson-Skold and Aggressiveness Index were programed in Excel software then scaling potential and corrosiveness of rural water of Khorasan razavi was studied.

Results: The results indicated that values of Langlier equals 0.33 ±0.14, Ryznar equals 7.36 ±0.37,Puckorius equals 7.4 ±0.6, Larson Ratio is equal to 2.1±1.4 and Aggressiveness Index equals 12.03 ±0.18.

Conclusions: In comparison of five stability indices, it was found that drinking water in the study area is corrosive. Thus essential actions for reducing corrosion and corrosion by-products, health and economic loss are required.

کلیدواژه‌ها [English]

  • Stability indices
  • Corrosion
  • Scaling
  • Drinking water
  • Khorasan razavi
1.         Kalantari, R.R., et al., Survey of corrosion and scaling potential in drinking water resources of the villages in Qom province by use of four stability indexes (With Quantitative and qualitative analysis. Archives of Hygiene Sciences, 2013. 2(4).

2.         Malakootian, M. and J. Momeni, Quality Survey of Drinking Water in Bardsir, Iran 2009-2010. Journal of Rafsanjan University of Medical Sciences, 2012. 11(4): p. 403-410.

3.         Reyes, A., et al., Microbiologically induced corrosion of copper pipes in low-pH water. International Biodeterioration & Biodegradation, 2008. 61(2): p. 135-141.

4.         Roberge, P.R., Corrosion Basics: An Introduction. 2006: NACE International.

5.         Edwards, M., Controlling corrosion in drinking water distribution systems: a grand challenge for the 21st century. Water Science & Technology, 2004. 49(2): p. 1-8.

6.         Brongers, M., P. Virmani, and J. Payer, Drinking water and sewer systems in corrosion costs and preventative strategies in the United States. Federal Highway Administration Publication FHWA-RD-01-156, US Department of Transportation, Washington, DC, 2002.

7.         Ha, H., et al., Effects of selected water chemistry variables on copper pitting propagation in potable water. Electrochimica Acta, 2011. 56(17): p. 6165-6183.

8.         Merkel, T.H., et al., Copper corrosion by-product release in long-term stagnation experiments. Water Research, 2002. 36(6): p. 1547-1555.

9.         Bazrafshan, E., et al., Concentration of heavy metals in surface water and sediments of Chah Nimeh water reservoir in Sistan and Baluchestan province, Iran. Desalination and Water Treatment, 2015(ahead-of-print): p. 1-11.

10.       Letterman, R.D. and A.W.W. Association, Water quality and treatment: a handbook of community water supplies. 1999: McGraw-Hill.

11.       Refait, P., et al., Corrosion and cathodic protection of carbon steel in the tidal zone: Products, mechanisms and kinetics. Corrosion Science, 2015. 90: p. 375-382.

12.       Sarin, P., et al., Physico-chemical characteristics of corrosion scales in old iron pipes. Water Research, 2001. 35(12): p. 2961-2969.

13.       Weber, W.J., Physicochemical processes for water quality control. 1972: Wiley interscience.

14.       Mudali, U.K. and B. Raj, Corrosion Science and Technology: Mechanism, Mitigation and Monitoring. 2008: Alpha Science International.

15.       Dąbrowski, W., et al., Calcium carbonate equilibria in water supply systems. Environment Protection Engineering, 2010. 36(2): p. 75-94.

16.       Liang, J., et al., Impact of elevated Ca(2+)/Mg(2+) concentrations of reverse osmosis membrane desalinated seawater on the stability of water pipe materials. J Water Health, 2014. 12(1): p. 24-33.

17.       Alipour, V., et al., Evaluation of corrosion and scaling tendency indices in a drinking water distribution system: a case study of Bandar Abbas city, Iran. J Water Health, 2015. 13(1): p. 203-9.

18.       Agatemor, C. and P.O. Okolo, Studies of corrosion tendency of drinking water in the distribution system at the University of Benin. The Environmentalist, 2008. 28(4): p. 379-384.

19.       Malakootian, M., M. Mobini, and I. Sharife, Evaluation of Corrosion and Scaling Potential of Wells Drinking Water and Aqueducts in Rural Areas Adjacent to Rafsanjan Fault in During October to December 2013. Journal of Rafsanjan University of Medical Sciences, 2014. 13(3): p. 293-304.

20.       Clesceri, L.S., et al., Standard Methods for the Examination of Water and Wastewater. 1998: American Public Health Association.

21.       Taghipour, H., et al., Corrosion and scaling potential in drinking water distribution system of Tabriz, northwestern Iran. Health promotion perspectives, 2012. 2(1): p. 103.

22.       Shams, M., A. Mohamadi, and S.A. Sajadi, Evaluation of Corrosion and Scaling Potential of Water in Rural Water Supply Distribution Networks of Tabas, Iran. World Appl Sci J, 2012. 17(11): p. 1484-9.

23.       Davil, M.F., et al., Survey of corrosion and scaling potential produced water from Ilam water treatment plant. World Appl Sci J, 2009. 7(11): p. 11-24.