کاربرد سیستم وتیور در تصفیه و بهبود کیفیت آب‌های نامتعارف

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه مدیریت مناطق بیابانی، مرکز تحقیقات بین‌المللی بیابان، دانشگاه تهران، تهران

2 پژوهشگر بخش آب و محیط زیست، پژوهشکدۀ سنگ آهن و فولاد، شرکت معدنی و صنعتی گل‏گهر، سیرجان، کرمان

3 دانشیار بخش علوم دامی دانشکدۀ علوم کشاورزی، دانشگاه شیراز، شیراز

4 استادیار بخش مهندسی آب، دانشکدۀ کشاورزی، دانشگاه شیراز، شیراز

5 کارشناس ارشد مهندسی منابع طبیعی، مهندسان مشاور سبخا، اراک

6 کارشناس ارشد آبخیزداری، ایستگاه پژوهشی مرکز تحقیقات بین‌المللی بیابان، دانشگاه تهران، تهران

7 دانشجوی کارشناسی ارشد گروه مدیریت آموزشی مدیریت مناطق بیابانی، مرکزتحقیقات بین المللی بیابان، دانشگاه تهران، تهران

چکیده

با توجه به محدودیت منابع آب شیرین، به‌ویژه در سرزمین‏های خشک و بیابانی، استفاده از فاضلاب‏های تصفیه‌شده در کشورهای مختلف جهان به‌منزلۀ راهکاری برای مدیریت عرضه و تقاضا منابع آب مطرح است. در همین زمینه، تحقیق حاضر نیز با هدف امکان‏سنجی و ارزیابی میزان تأثیر و کارآیی گیاه وتیورگراس در کاهش میزان خواص نامطلوب در دو نمونۀ آب نامتعارف شرکت صنعتی و معدنی گل‌گهر سیرجان انجام شده است. این پژوهش به‏ صورت فاکتوریل (با دو فاکتور شوری با دو سطح و زمان ماند با پنج سطح) و در قالب طرح کاملاً تصادفی انجام شد. نمونه‏های بررسی‌شده از حوضچۀ ذخیرۀ پساب معدن و حوضچۀ ذخیرۀ آب‏های بسیار شور زیرزمینی موجود در محدودة معدن گرفته شد. سطوح فاکتور زمان شامل زمان صفر، هفته‏ یک، دو، سه و چهار آزمایش بود. نتایج این تحقیق نشان داد که در پایان زمان نمونه‌برداری (پایان هفتة چهارم)، گیاه وتیورگراس بیشترین بازده معادل 5/31 درصد را برای نمونه‏های پساب معدن و 33 درصد برای نمونه‏های حوضچۀ ذخیرۀ آب زیرزمینی، در کاهش میزان کل املاح محلول داشت. همچنین، نتایج مربوط به آنالیز آنیون‏ها و کاتیون‏های موجود در نمونه‏ها نشان داد که گیاه وتیور به‌ترتیب بیشترین میزان راندمان در کاهش پارامتر سولفات را در هر دو نمونۀ آب و کمترین میزان راندمان در کاهش پارامتر پتاسیم در نمونۀ‏ پساب معدن و منیزیم در نمونۀ آب زیرزمینی را در پایان هفتۀ چهارم داشته است. یافته‏های این پژوهش نشان می‏دهد که سیستم تصفیۀ وتیور پتانسیل بالایی در تصفیۀ آب‏های نامتعارف دارای املاح و شوری بسیار بالا و کاهش آلاینده‏ها دارد.

کلیدواژه‌ها


عنوان مقاله [English]

Application of Vetiver system for treatment and improvement of unconventional water quality

نویسندگان [English]

  • Amir reza Keshtkar 1
  • Mohammad Reza Ahmadi 2
  • Hadi Atashi 3
  • Hossein Hamidifar 4
  • Seyed Mahdi Razavi 5
  • Hamir Reza Naseri 1
  • Ahmad Yazdanpanah 6
  • Nasrin Moazemi 7
1 Assistant Professor, Desert Region Management Dept., International Desert Research Center (IDRC), University of Tehran, Tehran, Iran
2 Water and Environment Dept., Institute of Iron and Steel, Golgohar Mining and Industerial Co., Sirjan, Iran
3 Associate Professor, Faculty of Agriculture, Shiraz University, Shiraz, Iran
4 Assistant Professor, Water Engineering Dept., Faculty of Agriculture, University of Fasa, Fasa, Iran
5 Senior Expert, Natural Resources Dept., Sabkha Co., Arak, Iran
6 Kerman Research Station, International Desert Research Center (IDRC), University of Tehran, Tehran
چکیده [English]

The aims of this study were to evaluate the treatment efficiency and effectiveness of Vetiveria zizaniodesof two samples of unconventional water of Golgohar Mining and Industrial Company. The experimental samples were included mine wastewater and saline ground water. This research was conducted in a greenhouse at Central Water Research Laboratory of University of Tehran. This experiment was designed as Randomised Complete Block Design (RCBD) including two salinity levels with three replications during four weeks. Results showed that treatment efficiencies of Total Dissolved Solids (TDS) and Electrical Conductivity (EC) were equal 31.5 and 28.3 percentages for mine wastewater and 33 and 28 percentage for ground water on fourth week respectively. Also results indicated that among Cations and Anions, SO4 and K parameters have shown highest and lowest rates at the end of fourth week respectively. It concluded vetiver treatment system include valuable potential for unconventional water treatment.

کلیدواژه‌ها [English]

  • Unconventional water treatment؛ Vetivergrass؛ Randomised Complete Block Design
  • Iron mine
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