Removal of dissolved organic carbon and nitrogen during simulated soil aquifer treatment

被引：35
|
作者：
Essandoh, H. M. K. [1 ]
Tizaoui, C. [2 ]
Mohamed, M. H. A. [1 ]
机构：
[1] Univ Bradford, Sch Engn Design & Technol, Bradford BD7 1DP, W Yorkshire, England
[2] Swansea Univ, Coll Engn, CWATER, Swansea SA2 8PP, W Glam, Wales
来源：
WATER RESEARCH | 2013年 / 47卷 / 11期
关键词：
Biodegradation; Denitrification; Nitrification; Phospholipid Fatty Acids; Soil column; Wastewater; WASTE-WATER TREATMENT; AEROBIC DENITRIFICATION; MICROBIAL COMMUNITIES; GROUNDWATER RECHARGE; BACTERIA; BIOMASS; NITRIFICATION; INFILTRATION; REDUCTION; SUBSTRATE;
D O I：
10.1016/j.watres.2013.04.013
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Soil aquifer treatment was simulated in 1 m laboratory soil columns containing silica sand under saturated and unsaturated soil conditions to examine the effect of travel length through the unsaturated zone on the removal of wastewater organic matter, the effect of soil type on dissolved organic carbon removal and also the type of microorganisms involved in the removal process. Dissolved organic carbon removal and nitrification did enhance when the wastewater travelled a longer length through the unsaturated zone. A similar consortium of microorganisms was found to exist in both saturated and unsaturated columns. Microbial concentrations however were lowest in the soil column containing silt and clay in addition to silica sand. The presence of silt and clay was detrimental to DOC removal efficiency under saturated soil conditions due to their negative effect on the hydraulic performance of the soil column and microbial growth. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3559 / 3572
页数：14
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