کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
575490 1453056 2016 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of antibiotic resistance genes on the performance and stability of different microbial aggregates in a granular sequencing batch reactor
ترجمه فارسی عنوان
اثرات ژن های مقاوم به آنتی بیوتیک بر عملکرد و پایداری سنگ های مختلف میکروبی در یک راکتور دسته ای ترتیبی
کلمات کلیدی
ژن های مقاومت آنتی بیوتیک، عملکرد درمان، راکتور بچگانه توالی گرانول، جمع آوری های میکروبی، اندازه گرانول،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
Antibiotic resistance genes (ARGs) have emerged as key factors in wastewater environmental contaminants and continue to pose a challenge for wastewater treatment processes. With the aim of investigating the performance of granular sludge system when treating wastewater containing a considerable amount of ARGs, a lab-scale granular sequencing batch reactor (GSBR) where flocculent and granular sludge coexisted was designed. The results showed that after inoculation of donor strain NH4+-N purification efficiency diminished from 94.7% to 32.8% and recovered to 95.2% after 10 days. Meanwhile, RP4 plasmid had varying effects on different forms of microbial aggregates. As the size of aggregates increased, the abundance of RP4 in sludge decreased. The residence time of RP4 in granules with particle size exceeding 0.9 mm (14 days) was far shorter than that in flocculent sludge (26 days). Therefore, our studies conclude that with increasing number of ARGs being detected in wastewater, the use of granular sludge system in wastewater treatment processes will allow the reduction of ARGs transmissions and lessen potential ecological threats.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 304, 5 March 2016, Pages 343-351
نویسندگان
, , , , , , , , , ,