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20102141

银虫 (初入文坛)

[求助] 论文英文摘要修改,润色(环境工程水处理方向)

投了一篇论文到环境工程学报,编辑给的终审意见是修改英文摘要,请各位高手帮,下面是我写的摘要

摘 要  采用A/O-MBR系统,逐步提高进水氨氮浓度富集了硝化活性污泥(NAS),在此基础上,考察了COD、烯丙基硫脲(ATU)、氨氮初始浓度及氨氧化速率对NAS降解氧氟沙星(OFL)的影响。结果表明,A/O-MBR富集的NAS的氨氧化速率达到了20 mg/gSS/h以上,对OFL具有明显降解作用;ATU存在条件下,COD对OFL的去除作用没有影响,说明起降解作用的主要是氨氧化菌(AOB);提高初始氨氮浓度和NAS氨氧化速率有助于OFL的降解,初始氨氮浓度由50 mg/提升至150 mg/L时,OFL降解量由67.26 μg/g提高到82.11 μg/g; NAS氨氧化速率由小于2.5 mg/gSS/h提升至大于20 mg/gSS/h时,OFL降解量由30.71 μg/g提高至75.16 μg /g。
关键词  抗生素  OFL  硝化活性污泥  降解

Abstract  The enrichment of nitrifying activated sludge (NAS) was achieved by increasing the influent ammonia concentration of A/O-MBR process. Then effect of COD, initial ammonia nitrogen concentration and ammonia oxidation rate on the degradation of OFL by NAS was investigated. The results showed that ammonia oxidation rate of the enriched NAS from A/O-MBR can reach up to 20 mg/gSS/h and the NAS has a significant degradation effect to OFL. There is no obvious effect of COD on the removal of OFL when the allylthiourea (ATU) was added, which indicate that ammonia oxidizing bacteria play a mainly role to the degradation of OFL. Increasing the initial concentration of ammonia nitrogen and ammonia oxidation rate of NAS is helpful to the degradation of OFL. The amount of degradation of OFL was increased from 67.26 μg/g to 82.11μg/g with the initial ammonia nitrogen concentration increased from 50 mg/L to 150 mg/L and from 30.71 μg/g to 75.16 μg/g with ammonia oxidation rate of NAS increased from less than 2.5 mg/gSS/h to more than 20 mg/gSS/h.
Key word  antibiotics;ofloxacin;nitrifying activated sludge;degradation
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【答案】应助回帖

改完了吗,是否仍需要修改?
头像是本人。
2楼2015-01-07 12:55:08
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