بررسی اثر زیست‎پالایی آب‎بندان‎ها بر نیتروژن و فسفر ورودی (مطالعه موردی)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری/ آبیاری و زهکشی، دانشگاه علوم کشاورزی و منابع طبیعی ساری

2 دانشیار /گروه مهندسی آب، دانشگاه علوم کشاورزی و منابع طبیعی ساری

چکیده

آب‌بندان‌ها، تالاب‌های مصنوعی هستند که از خاک‌برداری یک محدوده و ایجاد دیواره خاکی دور این محدوده پدید می‌آیند و سهم قابل توجهی در آبیاری اراضی کشاورزی استان مازندران دارند. در نظر گرفتن آب‌بندان به عنوان نوعی از تالاب‌های مصنوعی، این سوال را بوجود می‌آورد که آیا همانند انواع تالاب‌های مصنوعی، قادر به پالایش زیستی آلاینده‌های ورودی هستند؟ در این مطالعه به مدت نه ماه از آذر 1391 تا مرداد 1392 و با فواصل ماهانه، از آب ورودی و خروجی سه آب‌بندان لَلِمرز و نوبور با کاربری پرورش ماهی و سَرآب‌بندان واقع در شمال شهرستان ساری، جمعاً تعداد 54 نمونه آب برداشته شد. دما و pH نمونه‌ها در محل و غلظت پارامترهای نیترات، نیتریت، آمونیم و فسفر کل نمونه‌ها در آزمایشگاه با استفاده از دستگاه جذب اتمی اندازه‌گیری و مقدار نیتروژن کل از جمع جبری داده‌ها محاسبه شد. نتایج نشان داد تنها تفاوت معنی‌داری (0.016=P) بین میانگین غلظت فسفر کل ورودی (ppm 0.083) و خروجی (0.016 ppm) سرآب‌بندان وجود دارد و پرورش ماهی نیز اثر پالاینده یا آلاینده‌ای به صورت معنی‌دار بر غلظت خروجی پارامترها (0.05 =α) نداشت.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Survey of Abbandans' bioremediation effect on input nitrogen and phosphorus (case study)

نویسندگان [English]

  • R. Mahforouzi 1
  • A. Shahnazari 2
1 Ph.D. Student, Irrigation and Drainage, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
2 Associate Professor, Department of Water Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
چکیده [English]

Abbandans are constructed wetland which are made up of excavation an area and creating borders of soil around it. They have significant contributions on Mazandaran province farmland irrigation but like other types of constructed wetland, are they able to bioremediat input contaminants? For a period of 9 months and on a monthly basis from Dec 2012 to Aug 2013, 54 samples were collected from inlet and outlet water of three abbandans named Nobbor and Lalle-marz utilized for fish culture and Sar-abbandan, located in north of Sari city. The temperature and pH were measured in-situ and concentration of nitrate, nitride, ammonia and total phosphorus, were measured by Atomic Absorption Apparatus in the laboratory and total nitrogen was calculated from the sum of the nitrogen data. Significant difference was observed on input-output concentration (0.083-0.016 ppm) of total phosphorus of Sar-abbandan (P = 0.016) and fish farming had no bioremediating or polluting effect on outlet parameters (α = 0.05).

کلیدواژه‌ها [English]

  • Constructed Wetlands
  • Efficiency
  • Fish culture
  • Nitrate
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