تأثیر ماند آب در لوله‌ها و مخازن ساختمان‌های مسکونی بر کیفیت آب شرب (مطالعه موردی : مناطقی از شهر تهران)

نوع مقاله: یاداشت‌ فنی

نویسندگان

1 دانشجوی کارشناسی ارشد عمران-سازه‌های هیدرولیکی، دانشگاه پیام‌نور، واحد تهران شمال، تهران

2 استادیار، دانشکده مهندسی عمران، آب و محیط زیست، دانشگاه شهید بهشتی، تهران

3 مدرس، دانشکده مهندسی عمران، آب و محیط زیست، دانشگاه شهید بهشتی، تهران

چکیده

کیفیت آب در شبکه‌های توزیع معمولاً به‌طور منظم مورد پایش قرار می‌گیرد اما بررسی کیفیت آب در لوله‌ها و مخازن داخل ساختمان‌ها به ندرت انجام می‌شود. در این مقاله، تغییرات کیفی آب آشامیدنی به‌علت راکد ماندن در لوله‌ها و مخازن داخل ساختمان‌های مسکونی، مورد بررسی قرار گرفت. در تحقیق حاضر به‌منظور انجام آزمایش شمارش باکتری‌های هتروتروف، از 25 ساختمان در شهر تهران که 11 مورد از آنها دارای مخزن بودند، نمونه‌برداری شد. نتایج آزمایش‌ها، حاکی از افزایش قابل ملاحظه تعداد باکتری‌های موجود در آب درون لوله‌ها، به دنبال راکد ماندن در طول شب بود. بر اساس نتایج شمارش باکتری‌ها، اگر چه در اکثر موارد، راکد ماندن آب در مخازن، کاهش کیفیت آب را به‌همراه داشت، اما تعداد باکتری‌های موجود در آب مخازن، هنوز از حد استاندارد کمتر بودند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of Water Stagnation in Households Pipes and Tanks on Drinking Water Quality (Case Study: Some Areas in Tehran)

نویسندگان [English]

  • Shadi Shahrouzi 1
  • Mohamadreza Ghazizadeh 2
  • Parvin Shakerifard 3
1 MSc Student of Hydraulic Structures, Payame Noor University, North Tehran Center, Tehran
2 Ass. Prof., Faculty of Civil, Water and Environmetnal Engineering, Shahid Beheshti University, Tehran
3 Lecturer, Faculty of Civil, Water and Environmental Engineering, Shahid Behesthi University, Tehran
چکیده [English]

The water quality in distribution networks is regularly monitored on a routine basis. However, the quality of water in pipes and tanks inside buildings is rarely ever inspected. This study investigated the overnight stagnation of drinking water in household taps and building tanks. For the purposes of this study, the Heterotrophic Plate Counts test was conducted for which water samples were taken from 25 different buildings located in different parts of Tehran, among which 11 buildings had water storage tanks. The results showed a considerable increase in bacterial concentrations in all the water samples after stagnation. The results of bacterial enumeration in water tanks indicated that although building tanks reduced the quality of the stored water, bacterial concentrations in water tanks were still below the standard limit.

کلیدواژه‌ها [English]

  • water distribution networks
  • Quality Monitoring
  • Water Stagnation
  • Heterotrophic. Plate Counts
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