تصفیه شیرابه کارخانه کمپوست در تالاب مصنوعی افقی با استفاده ازگیاه وتیور

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی عمران محیط زیست، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز، اهواز، ایران

2 گروه آبیاری و زهکشی، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز، اهواز، ایران

3 گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

4 بخش بیوتکنولوژی میکروبی، پژوهشکده بیوتکنولوژی کشاورزی ایران، کرج، ایران

چکیده

هدف اصلی این پژوهش ، تصفیه آلودگی‌های مواد آلی، ترکیبات نیتراته از شیرابه زباله کارخانه کمپوست اصفهان به وسیله تالاب مصنوعی می‌باشد. این پژوهش در مقیاس آزمایشگاهی و برروی تالاب مصنوعی افقی با جریان زیر سطحی انجام گرفت. دراین سیستم که بستر آن را شن و ماسه تشکیل داده‌ و گیاه وتیور در آن کاشته شده بود شدت جریان و زمان ماند به ترتیب برابر 10 لیتر بر روز و 5 روز در نظر گرفته شد. مدت زمان انجام آزمایشها برروی تالاب مصنوعی افقی 60 روز است. بر اساس نتایج این تحقیق، راندمان حذف BOD5 ، COD ، نیترات، نیتروژن کل، آمونیاک برای تالاب اصلی به‌ترتیب برابر 30، 34، 40، 50 و 26 درصد و برای تالاب شاهد به‌ترتیب برابر 9، 19،33 ، 37 و 8 درصد بدست آمد که نشان دهنده کارایی تالاب مصنوعی افقی و گیاه وتیور در حذف آلودگی‌ها در تصفیه شیرابه می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

Treatment of High Polluted Leachate By Subsurface Flow Constructed Wetland With Vetiver

نویسندگان [English]

  • R. Bakhshoodeh 1
  • A. Soltani-Mohammadi 2
  • N. Alavi 3
  • H. Ghanavati 4
1 1 Department of Environmental Engineering, Faculty of Water Sciences Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2 Irrigation and Drainage Department, Faculty of Water Sciences Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
3 Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran 4
4 Microbial Biotechnology Department, Agricultural Biotechnology Research Institute of Iran (ABRII), Karaj, Iran
چکیده [English]

Landfill leachate usually contains high concentrations of pollutions that are seriously harmful to the environment and human health. The main purpose of this study was removing organic pollution, ammonia, nitrate and total nitrogen in Isfahan composting facility leachate by horizontal constructed wetland systems. A pilot-scale study was conducted on subsurface flow constructed wetland systems operated in horizontal mode (HFCWs).Two horizontal systems with different plants were constructed, one planted with Vetiver and the other one without plant as a control. They were operated identically at a flow rate of 27 l/day with a 5 day hydraulic retention time. The average removal efficiencies for control and experiment were BOD5, 9% and 30%; COD, 19 and 34%; TN, 37 and 50%; Ammonium, 8 and 26%; nitrate 33 and 40% respectively. Due to high concentration of pollutants (the mean leachate concentrations of COD, BOD5, TSS, NH4+ -N, NO3- -N, TN were 104514.9, 69200.0, 8478.3, 317.5, 4633.2 and 1500 mg/L, respectively) the subsurface flow constructed wetland systems with Vetiver plant is a suitable solution for leachate treatment.

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نشریه مهندسی عمران امیرکبیر
دوره 49، شماره 1
خرداد 1396
صفحه 139-148

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