مقایسه اقتصادی گزینه‌های تغذیه مصنوعی آب‌ زیرزمینی با استفاده از پساب تصفیه شده (آبخوان دشت یزد-اردکان)

نوع مقاله : یاداشت‌ فنی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه مهندسی منابع آب، دانشکده مهندسی عمران، آب و محیط‌زیست، دانشگاه شهید بهشتی، تهران، ایران

2 دانشیار، گروه مهندسی منابع آب، دانشکده مهندسی عمران، آب و محیط‌زیست، دانشگاه شهید بهشتی، تهران، ایران

چکیده

هدف از این پژوهش، بررسی کمّی تأثیرات تغذیه مصنوعی با روش‌های حوضچه‌ نفوذ و چاه تزریق با استفاده از پساب تصفیه ‌شده شهرهای میبد و اردکان و مقایسه اقتصادی دو گزینه بود. در این پژوهش، شبیه‌سازی جریان آب زیرزمینی آبخوان یزد-اردکان برای دوره‌ یک ساله )1381 تا 1382( با استفاده از مدل MODFLOW انجام و سه محل به‌منظور تغذیه مصنوعی انتخاب شد. حجم سالانه پساب تصفیه ‌شده به میزان 2/13 میلیون مترمکعب برآورد شد و میانگین افزایش میانگین تراز در شعاع 3 کیلومتری از محل تغذیه مصنوعی حدود 8/0 متر به‌دست آمد. قیمت هر مترمکعب آب استحصال شده از تغذیه مصنوعی بدون احتساب هزینه‌های انتقال و تصفیه پساب با روش حوضچه نفوذ در محل‌های تغذیه 1، 2 و 3 به‌ترتیب برابر با 2/342، 4/417 و 9/381 ریال و با روش چاه تزریق به‌ترتیب برابر با 2/506، 2/515 و 7/495 ریال به‌دست آمد. هزینه انتقال هر متر‌مکعب آب به محل‌های 1، 2 و 3 (که فاصله آنها از محل تصفیه‌خانه به‌ترتیب 13200، 11000 و 9000 متر بود) به‌ترتیب برابر با 3580 و 2958 و 2418 ریال حاصل شد. بنابراین انتخاب محل مناسب از مهم‌ترین نکات در طراحی این‌گونه سیستم‌ها است.

کلیدواژه‌ها

عنوان مقاله [English]

Economic Comparison of Groundwater Artificial Recharge Options Using Treated Wastewater (Yazd-Ardakan Aquifer)

نویسندگان [English]

  • Hamidreza Bana Bafroei 1
  • Saeed Alimohammadi 2
1 Former Gratuated Student, Dept. of Civil Engineering, College of Water and Enviromental Engineering, Shahid Beheshti University, Tehran, Iran
2 Assoc. Prof. Dept. of Water Resources Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran
چکیده [English]

The purpose of this study is to quantitatively investigate the effects of artificial recharge of treated wastewater of Meybod and Ardakan cities with infiltrations and injection wells and comparing the economics of the two alternatives. In this study, the simulation of the groundwater flow in aquifer for a one-year period of 2002-2003 was carried out using the MODFLOW model and three locations were selected for artificial recharge. The annual volume of treated wastewater to recharge was estimated at 13.2 million cubic meters and the average level increase within a radius of three kilometers from the artificial feeding site was about 0.8 meters. The price of each cubic meter of water extracted from artificial feeding, excluding the costs of transfer and treatment of wastewater by the infiltration basin method in feeding places No. 1, 2 and 3, is equal to 342.2, 417.4 and 9.381 rials and with the injection well method it was obtained as 506.2, 515.2 and 495.7 rials, respectively. The cost of transporting each cubic meter of water to places 1, 2 and 3 (which are 13200, 11000 and 9000 meters from the treatment plant, respectively) was equal to 3580, 2958 and 2418 rials, respectively. Therefore, choosing the right place is one of the most important points in the design of such systems.

کلیدواژه‌ها [English]

  • Artificial Recharge
  • Treated Wastwater
  • Groundwater Model MODFLOW
  • Recharge Well
  • Recharge Basin

مراجع

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