• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Application of a CO2-stripping system for calcium removal to upgrade organic matter removal and sludge granulation in a leachate-fed EGSB bioreactor
【24h】

Application of a CO2-stripping system for calcium removal to upgrade organic matter removal and sludge granulation in a leachate-fed EGSB bioreactor

机译：CO2汽提系统在渗滤液EGSB生物反应器中升高有机物质去除和污泥粒度的应用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The application of CO _(2) -stripping system for calcium removal to upgrade organic matter removal and sludge granulation in a leachate-fed EGSB bioreactor was evaluated. Three-dimensional excitation–emission matrix (3D-EEM) spectroscopy combined with parallel factor (PARAFAC) analysis was used to characterize the transformation of the effluent dissolved organic matter (DOM) during the operation. X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) and scanning electronic microscopy (SEM) were used to assess the effects of a CO _(2) -stripping unit on the microstructure of the granules. The introduction of the CO _(2) -stripping system reduced the calcium concentration while upgrading methane evolution. The methane yield reached 0.33 L CH _(4) per g COD _(removed) in the bioreactor with the CO _(2) -stripping unit compared with 0.31 L CH _(4) per g COD _(removed) without the unit as the control. The combined system produced 80% and 50–60% chemical oxygen demand (COD) and total nitrogen (TN) removal under steady-state conditions, which were 6.3% and 41.0% higher than those of the control, respectively. With 3D-EEM-PARAFAC analysis, three fluorescence components, associated as tryptophan protein-like (component 1, E _(x) / E _(m) = 275–280/355–365 nm) and humic-like substances (component 2, E _(x) / E _(m) = 240(295, 340)/450 nm and component 3, E _(x) / E _(m) = 320/320 nm), were identified from the effluent samples. The componential characterizations confirmed the favorable influence of the CO _(2) -stripping unit on the transformation of DOM. Further analysis through XRD, FT-IR and SEM demonstrated that the use of the unit alleviated inactivation of the granules through removing calcium, which might be the core reason for the enhancement of the EGSB performance.
机译：评价CO _（2）钙化系统的应用，用于升级浸润液ENGSB生物反应器中有机物质去除和污泥粒化。与平行因子（PARAFAC）分析结合的三维激发发射矩阵（3D-EEM）光谱法用于表征流出物溶解有机物质（DOM）的变化。 X射线衍射（XRD），傅立叶变换红外（FT-IR）和扫描电子显微镜（SEM）用于评估CO _（2）粒状单元对颗粒的微观结构的影响。 CO _（2）粒状系统的引入减少了钙浓度，同时升级甲烷进化。在具有CO _（2）-String单元的生物反应器中，甲烷产率达到0.33L Ch _（4）每G COD _（除去），与CO _（2）-String单元相比，与0.31L Ch _（4）），每G COD _（移除）没有单位作为控制。组合系统在稳态条件下产生了80％和50-60％的化学需氧量（COD）和总氮（TN），分别比对照的6.3％和41.0％。具有3D-EEM-PARAFAC分析，三种荧光组分，与色氨酸蛋白质相比（组分1，E _（x）/ E _（m）= 275-280 / 355-365nm）和腐殖质的物质（组分参照图2，从流出物中识别2，e_（x）/ e _（m）= 240（295,340）/ 450nm和组分3，e_（x）/ e _（m）= 320/320nm）样品。成分特征证实了CO _（2）-String单元对DOM转换的良好影响。通过XRD，FT-IR和SEM进一步分析，证明使用该单位通过除去钙而缓解颗粒的灭活，这可能是增强EGSB性能的核心原因。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号