کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7068695 | 1459893 | 2018 | 36 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Denitrification of landfill leachate under different hydraulic retention time in a two-stage anoxic/oxic combined membrane bioreactor process: Performances and bacterial community
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
Two-stage anoxic/oxic combined membrane bioreactor (A/O-A/O-MBR) process was used to treat leachate generated from Shenyang Laohuchong landfill, and the effect of hydraulic retention time (HRT) was studied. A long HRT of 9â¯d and a short HRT of 5â¯d showed negative effect on the stability of process, resulting in a higher organic concentration of effluent than that with a HRT of 7â¯d, while the highest removal of chemical oxygen demand (COD), ammonia (NH4+-N) and total nitrogen (TN) were achieved with a HRT of 7â¯d, which was 82.4%, 99.1% and 75.3% respectively. The analysis of microbial communities by high-throughput sequencing showed that phyla Proteobacteria and Bacteroidetes were the dominant bacteria, which accounted for 36.63-42.39%, 29.21-38.66%, respectively. For genus classification, the most representative of Ferruginibacter, unclassified-Saprospiraceae and Nitrosomonas accounted for 20.76-35.11% totally. The other communities, including Nitrobacter, Planctomyces, Rhodobacteraceae and Nitrospirae, were also developed for organic degradation and denitrification.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 250, February 2018, Pages 110-116
Journal: Bioresource Technology - Volume 250, February 2018, Pages 110-116
نویسندگان
Jianbo Liu, Panyue Zhang, Haibo Li, Yuan Tian, Siyu Wang, Yonghui Song, Guangming Zeng, Chen Sun, Zhiyong Tian,