自制功能填充剂微妙的释放激活了SBBR从源分离的尿液中高效的去除
Weinan Zhang1,2,3, Ke Bei1,2,3, Zhan Jin1,2,3
1College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
概括
研究人员开发了新型的自制填充剂 (SFA/SFB),用于对批量生物膜反应器 (SBBR) 进行测序,以处理源分离的尿液. 通过形成 struvite 和 dittmarite,SFA 填充剂证明了优越的去除,为尿液处理提供了有前途的解决方案.
科学领域:
- 环境工程 环境工程
- 废水处理技术 废水处理技术
- 资源恢复 资源回收 资源回收
背景情况:
- 源隔离的家庭废水处理提高了效率和资源的再利用,但需要有效的方法来处理多余的尿液.
- 与传统系统相比,测序批量生物膜反应器 (SBBR) 提供了更好的污染物清除和更简单的操作.
- 使用常规填充剂的现有SBBR具有有限的去除能力,需要进一步改进.
研究的目的:
- 开发和评估新型自制填充剂 (SFA/SFB),以提高SBBR处理源分离尿的去除效果.
- 为了比较SFA和SFB填充剂在消除化学氧气需求 (COD),总 (TN) 和 (PO43-P,TP) 的性能.
- 阐明SFA填充剂去效率背后的机制.
主要方法:
- 在SBBR系统中开发和测试了两个自制填充剂SFA和SFB,用于源隔离尿处理.
- 进行了长期治疗实验,以评估COD,TN和去除率在不同的液压保留时间 (HRT) 中.
- 进行了微生物群体分析,吸附实验和材料表征 (SEM,XRD,BET) 以了解去除机制.
主要成果:
- 无论是SFA和SFB填充剂,都有效地去除了COD和TN,随着HRT的增加,去除率会增加.
- 使用SFA填充剂的SBBR系统在1天的HRT后表现出优异的PO43-P (83.7±11.9%) 和TP (77.3±13.7%) 清除.
- SFA的增强去除是由于其较宽松的结构,促进的释放,后者与尿液成分反应形成dittmarite和struvite,而不是专门的细菌或简单的吸附和.
结论:
- 自制填充剂A (SFA) 显著改善了SBBR中用于源分泌尿处理的去除.
- 由SFA释放的驱动的迪特马里特和斯特鲁维特的形成是有效去除的主要机制.
- 这项研究提出了一种可行的方法,用于有效的源分泌尿处理,使用SBBR与定制填充剂的SBBR.
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