امکان سنجی میزان کاهش شوری آب با استفاده از گیاه آتریپلکس لنتی‌فورمیس در بستر زئولیت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 مهندسی آب، مهندسی کشاورزی، صنعتی اصفهان، اصفهان، ایران.

2 استاد، مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

چکیده

روش­های متعددی برای نمک­زدایی از آب­شور ارائه شده که می­توان آن­ها را در دو گروه اصلی فرآیند­های غشائی و حرارتی طبقه­بندی نمود. روش­های دیگر نیز برای شوری­زدایی از آب دریا وجود دارد که مهم­ترین آن­ها زیست­پالایی از جمله گیاه­پالایی می­باشد. هالوفیت­ها گیاهانی هستند که قادرند غلظت­هایی از نمک را تحمل کنند که اغلب گیاهان در این شرایط قادر به حیات نیستند. در این پژوهش، از گیاه آتریپلکس لنتی فورمیس به عنوان پالاینده و آب با هدایت­الکتریکی 000 15 میکروزیمنس بر سانتی متر به عنوان آب شور استفاده شد. همچنین برای بررسی تأثیر تعداد بوته در واحد سطح، از 3 سطح تراکم (بدون گیاه، 12 و24بوته) استفاده شد و نیز فاکتور زمان­ماند در 4 سطح (7، 14، 21 و 28 روز) در نظرگرفته شد. آزمایش در دو حالت مختلف (با تراکم و زئولیت، بدون تراکم و بدون زئولیت) و با سه تکرار انجام شد. هدایت­الکتریکی، غلظت یون­های کلسیم، منیزیم، سدیم و کلراید قبل و بعد از تصفیه توسط گیاه اندازه­گیری و درصدهای متوسط کاهش پارامترهای مذکور محاسبه شد. نتایج به­ دست آمده نشان­دهنده آن است که هدایت­الکتریکی مخزن بدون­گیاه (مخزن محتوی زئولیت) 1/4 درصد و در تراکم 12 بوته به همراه بستر زئولیت 4/13 درصد و در تراکم 24 بوته به همراه بستر زئولیت 9/15 درصد کاهش یافته است. همچنین یون­های کلسیم، منیزیم، سدیم، کلراید به ترتیب 9/35، 25، 18و9/16درصد کاهش یافت.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Feasibility Study of Water Salinity Reduction by Atriplex Lentiformis Plant in a Zeolite Substrate

نویسندگان [English]

  • morteza abdolhoseini 1
  • Manouchehr Heidarpour 2
  • Jahangir Abedi-Koupai 2
1 water engineering , Agricultural engineering, Isfahan university of technology, Isfahan , Iran.
2 Department of Water Engineering, Faculty of Agriculture, Isfahan University of Technology.
چکیده [English]

There are several methods for desalination which could be divided into two classes of membrane and thermal processes. Other methods are also existed, of which, bioremediation (including phytoremediation), is the most important method. Halophytes are recognized as plants associated with the capability of tolerating those amounts of salt concentrations that could not be tolerated by other plants. Current investigation utilizes Atriplex Lentiformis plant as the purifier and solution of 15000 μS/Cm as the saline water. Three levels of plant density (0, 12, 24 plants) and four retention times (7, 14, 21 and 28 days) were considered in this study. This experiment was carried out without and with the presence of zeolite. Different parameters including; electrical conductivity (EC), concentration of calcium, magnesium, sodium, and chloride ions were measured before and after the treatment and the average reduction percentages of the proposed factors were measured. It was found that the zeolite treatments with 0, 12 and 24 plants reduced the EC 4.1, 13.4and 15.9%, respectively. Also, the concentrations of calcium, magnesium, sodium, and chloride ions were reduced 35.9, 25, 18, and 16.9%, respectively.

کلیدواژه‌ها [English]

  • Desalination
  • Halophyte
  • Zeolite
  • Atriplex
  • Saline waters
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