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Enhancing nitrogen removal from low carbon to nitrogen ratio wastewater by using a novel sequencing batch biofilm reactor 被引量:3
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作者 Jinte Zou Jun Li +1 位作者 Yongjiong Ni Su Wei 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第12期32-37,共6页
Removing nitrogen from wastewater with low chemical oxygen demand/total nitrogen (COD/TN) ratio is a difficult task due to the insufficient carbon source available for denitrification. Therefore, in the present work... Removing nitrogen from wastewater with low chemical oxygen demand/total nitrogen (COD/TN) ratio is a difficult task due to the insufficient carbon source available for denitrification. Therefore, in the present work, a novel sequencing batch biofilm reactor (NSBBR) was developed to enhance the nitrogen removal from wastewater with low COD/ TN ratio. The NSBBR was divided into two units separated by a vertical clapboard. Alternate feeding and aeration was performed in the two units, which created an anoxie unit with rich substrate content and an aeration unit deficient in substrate simultaneously. Therefore, the utilization of the influent carbon source for denitrification was increased, leading to higher TN removal compared to conventional SBBR (CSBBR) operation. The results show that the CSBBR removed up to 76.8%, 44.5% and 10.4% of TN, respectively, at three tested COD/TN ratios (9.0, 4.8 and 2.5). In contrast, the TN removal of the NSBBR could reach 81.9%, 60.5% and 26.6%, respectively, at the corresponding COD/TN ratios. Therefore, better TN removal performance could be achieved in the NSBBR, especially at low CODfrN ratios (4.8 and 2.5). Furthermore, it is easy to upgrade a CSBBR into an NSBBR in practice. 展开更多
关键词 novel sequencing batch biofilm reactor (NSBBR) Dissolved oxygen Simultaneous nitrification-denitrification (SND) Chemical oxygen demand/Total nitrogen (COD/TN) ratio Nitrogen removal
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Characterization and complete genome sequence of vB_EcoP-Bp4,a novel polyvalent N4-like bacteriophage that infects chicken pathogenic Escherichia coli 被引量:7
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作者 Can Zhang Yanxiang Ma +3 位作者 Ting Wang Huzhi Sun Guomin Lu Huiying Ren 《Virologica Sinica》 SCIE CAS CSCD 2016年第4期353-356,共4页
Pathogenic Escherichia coli cause chicken colibacillosis, which is economically devastating to the poultry in- dustry worldwide (Bagheri et al., 2014). Owing to in- creasing antibiotic resistance, phage therapy reag... Pathogenic Escherichia coli cause chicken colibacillosis, which is economically devastating to the poultry in- dustry worldwide (Bagheri et al., 2014). Owing to in- creasing antibiotic resistance, phage therapy reagents have been developed to treat bacterial infections (Xu et al., 2015). 展开更多
关键词 coli ORFs Characterization and complete genome sequence of vB_EcoP-Bp4 a novel polyvalent N4-like bacteriophage that infects chicken pathogenic Escherichia coli
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