راندمان حذف آنتی‌بیوتیک پنی‌سیلین جی در تالاب مصنوعی با جریان افقی زیرسطحی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه عمران، دانشکده مهندسی، دانشگاه بیرجند

2 عمران دانشگده مهندسی دانشگاه بیرجند

3 گروه عمران/ دانشکده مهندسی/ دانشگاه بیرجند

چکیده

  آنتی‌بیوتیک‌‌ها به‌دلیل اثرات سمی بر زنجیره‌ی غذایی و بوم سازگان‌های آبی و ایجاد مقاومت دارویی، مشکلات زیست محیطی و بهداشتی برای انسان ایجاد می‌نمایند. در این مطالعه با استفاده از تالاب مصنوعی جریان افقی، حذف پنی‌سیلین جی، از فاضلاب مصنوعی انجام شد. هدف کلی این تحقیق، تعیین کارآیی سیستم پایلوت تالاب مصنوعی با جریان افقی زیرسطحی در حذف آلاینده دارویی آنتی‌بیوتیک پنی‌سیلین جی است. برای بررسی تاثیر و بهینه‌سازی متغیر غلظت آلاینده در فاضلاب ورودی، زماند، ماند و وجود و عدم وجود گیاه در تالاب بر روی حذف آلاینده از روش سطح پاسخ استفاده شد. تالاب مصنوعی زیرسطحی در شرایط مختلف مورد بهره برداری قرار گرفت و 30 نمونه فاضلاب از خروجی تالاب در شرایط مختلف، آزمایش شد. نتایج نشان داد که وجود گیاه نی، و زمان ماند با راندمان حذف، رابطه مستقیم و غلظت ورودی آلاینده با راندمان حذف رابطه معکوس دارد، وجود گیاه سبب افزایش تاثیر زمان ماند بر کاهش غلظت آلاینده در خروجی تالاب می‌شود. به‌طوری که در تالاب مصنوعی گیاه‌کاری شده، راندمان حذف برای زمان ماند 72 ساعت و غلظت­های ورودی مختلف بین %17/94 تا %61/73 بود. همچنین ضریب همبستگی، ضریب همبستگی اصلاحی و دقت تناسب در مدل به‌دست آمده از روش سطح پاسخ برای تخمین غلظت پنی‌سیلین جی در خروجی تالاب بترتیب برابر 9929/0، 9902/0 و 55/65 بود. بر مبنای نتایج حاصل از این مطالعه‌ی تالاب‌ مصنوعی زیر‌سطحی می‌تواند فاضلاب حاوی پنی‌سیلین جی با غلظت دوبرابر متوسط غلظت حداکثری موجود در فاضلاب­های بیمارستانی را با راندمان بالای 90 درصد حذف و  به عنوان یک سیستم تصفیه مناسب در حذف پنی‌سیلین جی، مورد استفاده قرار گیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Removal efficiency of penicillin G in horizontal subsurface flow wetlands

نویسندگان [English]

  • mohamad javad zoqi 1
  • mohamad reza doosti 2
  • vahid golkari 3
1 Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran
2 Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran
3 Department of Civil ENG, University of Birjand, Birjand, Iran
چکیده [English]

Antibiotics are potential pollutants that represent an important environmental problem because of their toxic effects on the food chain and aqueous streams. The goal of this study was to determine the efficiency of a horizontal subsurface flow constructed wetland for a pharmaceutical pollutants antibiotic penicillin G. This study used constructed wetland pilot system for removal of penicillin G in artificial wastewater. in this study, the effects of initial concentration of wastewater, hydraulic retention time, and reed on the pollutant removal efficiency were investigated. The data was analyzed using the central composite design which is the most commonly used response surface methodology design. 30 Samples of wastewater were taken from the output of constructed wetlands subsurface and tested in the laboratory-based on the standard reference method for experiments in water and wastewater. The results showed that reed, and retention time, have a direct relationship, and enhance them to increase efficiency. The initial concentration of wastewater is inversely related to removal efficiency. In the constructed wetland, the removal efficiency for 72 hours and different input concentrations was between 94.17% and 73.61%. Based on the study results, it can be stated that subsurface constructed wetland can remove the maximum concentration of hospital wastewater and even double this concentration with efficiency up to 90 percent, and it can be used as a proper treatment system for removal of penicillin G.

کلیدواژه‌ها [English]

  • Constructed wetland
  • Penicillin G
  • Response surface methodology
  • Phragmites australis
  • Hospital Wastewater

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نشریه مهندسی عمران امیرکبیر
دوره 53، شماره 2
اردیبهشت 1400
صفحه 723-732

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