• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Liu, Hai-Ling (Liu, Hai-Ling.) | Li, Xing (Li, Xing.) | Li, Na (Li, Na.)

收录:

Scopus SCIE

摘要:

Bio-slow sand filters (BSSFs) are widely employed in rural drinking water treatment ascribing to its economic applicability, easy operation and high efficiency. This study investigated the influence of particle size, filter thickness, water quality and filtration rate on decontamination performance, bacterial community and metabolic function of BSSFs. The effluent ammonia nitrogen during stable operation period basically met the standards for drinking water quality in China (0.5 mg/L). The average removal efficiencies of fine sand were about 4 % higher than those of coarse sand, and thick filter layer showed more stable performance. Schmutzdecke removed most turbidity and organic pollutants, playing an overwhelming role in water purification. Filtration rate was a key factor in shaping bacterial community structure. Proteobacteria and Cyanobacteria were dominant phyla, whose relative abundance significantly decreased and increased as filtration rate increasing, respectively. Co-occurrence patterns were dominant within bacterial communities. Function bacteria (e.g. Hyphomicrobium and Methylophilus) and rare genera (Curvibacter and Simplicispira) were identified as hub genera in the networks. The bacterial communities exhibited a metabolic versatility. Several pathways for secondary metabolism significantly shifted under different conditions, such as xenobiotics biodegradation and metabolism. Moreover, filtration rate and dominant genera greatly affected pollutant removal performance. Many species of Proteobacteria and Bacteroidota were closely related to carbohydrate metabolism, energy metabolism and nucleotide metabolism, and metabolic functions corresponded more cohesively to conditional abundant taxa, conditional rare or abundant taxa, conditional rare taxa. This study highlights the adaptability and bacterial community characteristics of BSSFs, and provides references for their practical application.

关键词:

Full-scale classification Metabolic function Network analysis Schmutzdecke Bio-slow sand filters

作者机构:

  • [ 1 ] [Liu, Hai-Ling]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Xing]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Na]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Na]Beijing Univ Technol, 100 Xi Da Wang Rd, Beijing 100124, Peoples R China

通讯作者信息:

  • [Li, Na]Beijing Univ Technol, 100 Xi Da Wang Rd, Beijing 100124, Peoples R China;;

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

JOURNAL OF WATER PROCESS ENGINEERING

ISSN: 2214-7144

年份: 2023

卷: 53

7 . 0 0 0

JCR@2022

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 18

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 0

归属院系:

在线人数/总访问数:324/4971633
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司