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首页> 外文期刊>Environmental Technology >Performance comparison of biofilm and suspended sludge from a sequencing batch biofilm reactor treating mariculture wastewater under oxytetracycline stress
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Performance comparison of biofilm and suspended sludge from a sequencing batch biofilm reactor treating mariculture wastewater under oxytetracycline stress

机译：顺序分批生物膜反应器处理土霉素对海水养殖废水的生物膜和悬浮污泥的性能比较

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摘要

The performance, extracellular polymeric substances (EPS) and microbial community of a sequencing batch biofilm reactor (SBBR) were investigated in treating mariculture wastewater under oxytetracycline stress. The chemical oxygen demand and NH4+-N removal efficiencies of the SBBR decreased with the increase of oxytetracycline concentration, and no obvious NO2--N and NO3--N accumulation in the effluent appeared at less than 10 mg L-1 oxytetracycline. The specific oxygen utilization rate of the suspended sludge was more than that of the biofilm at different oxytetracycline concentrations. The specific ammonium oxidation rate (SAOR) of the biofilm was more easily affected by oxytetracycline than that of the suspended sludge, whereas the effect of oxytetracycline on the specific nitrite oxidation rate (SNOR) of the biofilm was less than that of the suspended sludge. The specific nitrate reduction rate of both the biofilm and suspended sludge was higher than the sum of the SAOR and SNOR at different oxytetracycline concentrations. The protein and polysaccharide contents in the EPS of the biofilm and suspended sludge increased with the increase of oxytetracycline concentration. The appearance of oxytetracycline in the influent could affect the chemical composition of the loosely bound EPS and tightly bound EPS. The amino, carboxyl and hydroxyl groups might be involved with interaction between EPS and oxytetracycline. The denaturing gradient gel electrophoresis profiles indicated that the variation of oxytetracycline concentration in the influent could affect the microbial communities of both the biofilm and suspended sludge.
机译：研究了排序生物膜反应器（SBBR）的性能，细胞外聚合物质（EPS）和微生物群落在土霉素胁迫下处理海水养殖废水的性能。 SBBR的化学需氧量和NH4 + -N去除效率随着土霉素浓度的增加而降低，当L-1土霉素低于10 mg时，出水中没有明显的NO2--N和NO3--N积累。在不同的土霉素浓度下，悬浮污泥的比氧利用率高于生物膜。土霉素的生物膜比铵氧化速率（SAOR）比悬浮污泥更容易受到氧化膜的影响，而土霉素对生物膜的亚硝酸盐比氧化率（SNOR）的影响要小于悬浮污泥。在不同土霉素浓度下，生物膜和悬浮污泥的比硝酸盐还原率均高于SAOR和SNOR的总和。生物膜和悬浮污泥的EPS中的蛋白质和多糖含量随土霉素浓度的增加而增加。进水中土霉素的出现可能会影响松散结合的EPS和紧密结合的EPS的化学成分。氨基，羧基和羟基可能与EPS和土霉素之间的相互作用有关。变性梯度凝胶电泳图表明进水中土霉素浓度的变化可能影响生物膜和悬浮污泥的微生物群落。

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  • 来源
    《Environmental Technology》 |2016年第20期|2391-2404|共14页
  • 作者

    Zheng Dong; Gao Mengchun; Wang Zhe; She Zonglian; Jin Chunji; Chang Qingbo;

  • 作者单位

    Ocean Univ China, Minist Educ, Key Lab Marine Environm & Ecol, Qingdao, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Environm & Ecol, Qingdao, Peoples R China|Ocean Univ China, Coll Environm Sci & Engn, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Environm & Ecol, Qingdao, Peoples R China;

    Ocean Univ China, Coll Environm Sci & Engn, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China;

    Ocean Univ China, Coll Environm Sci & Engn, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China;

    Ocean Univ China, Coll Environm Sci & Engn, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Oxytetracycline; SBBR; mariculture wastewater; microbial activity; microbial community;

    机译：土霉素;SBBR;海水养殖废水;微生物活性;微生物群落;

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