DOI: 10.1016/j.watres.2018.07.047
Scopus记录号: 2-s2.0-85053026510
论文题名: Effects of irrigation with secondary treated wastewater on physicochemical and microbial properties of soil and produce safety in a semi-arid area
作者: Farhadkhani M. ; Nikaeen M. ; Yadegarfar G. ; Hatamzadeh M. ; Pourmohammadbagher H. ; Sahbaei Z. ; Rahmani H.R.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 356
结束页码: 364
语种: 英语
英文关键词: Decay
; Irrigation
; Microbial quality
; Physicochemical characteristics
; Soil
; Wastewater
Scopus关键词: Arid regions
; Crops
; Developing countries
; Escherichia coli
; Irrigation
; Soil moisture
; Soils
; Wastewater
; Wastewater reclamation
; Water pollution
; Arid and semi-arid regions
; Culture and molecular methods
; Decay
; Microbial quality
; Physicochemical characteristics
; Physicochemical property
; Total and fecal coliforms
; World Health Organization
; Wastewater treatment
; arid region
; bioindicator
; coliform bacterium
; concentration (composition)
; developing world
; irrigation
; microbial activity
; physicochemical property
; safety
; semiarid region
; soil property
; wastewater treatment
; water quality
; water resource
; Middle East
; Allium cepa
; Escherichia coli
; Lactuca
; Salmonella
; Shigella
; Zea mays
英文摘要: Water scarcity is becoming one of the largest problems worldwide. Agricultural reuse of wastewater has been considered a valuable and reliable alternative, alleviating the pressure on freshwater resources in arid and semi-arid regions such as the Middle East. Inadequate microbial quality of treated wastewater is a challenge for developing countries, which limits agricultural reuse of wastewater. This study assessed the impact of irrigation with secondary treated wastewater (STWW) on soil properties as well as the safety of various types of crops as compared with tap water (TW) irrigation through a furrow system. Total and fecal coliforms and Escherichia coli were monitored as indicator bacteria in STWW, irrigated soil and harvested crops. The presence of pathogenic E. coli O157, Salmonella and Shigella was also monitored in all samples using a combination of culture and molecular methods. The microbial quality of wastewater in terms of E. coli concentration (4.18 Log MPN/100 ml) failed to meet the world health organization (WHO) recommendation for irrigation of root and leafy crops (≤103 and ≤ 104 E. coli per 100 ml for root and leafy crops, respectively). No significant effects on physicochemical properties of the soil irrigated with STWW was found in comparison with control plots, except for electrical conductivity (EC) and sodium adsorption ratio (SAR), which were slightly higher in STWW soil samples. Although the microbial quality of soil was affected by STWW irrigation, a relatively low concentration of E. coli was detected in soil. No microbial contamination in terms of E. coli was found on harvested maize and onion. E. coli contamination of lettuce and spring onion was found for both irrigation schemes. No STWW, soil or crop samples were found positive for pathogenic bacteria. According to the analyzed parameters, STWW could be safely used as an alternative source for irrigation of root and leafy crops. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112480
Appears in Collections: 气候减缓与适应
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作者单位: Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Statistics & Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Isfahan Water & Wastewater Company, Iran; Agricultural and Natural Resources Research Center, Isfahan, Iran
Recommended Citation:
Farhadkhani M.,Nikaeen M.,Yadegarfar G.,et al. Effects of irrigation with secondary treated wastewater on physicochemical and microbial properties of soil and produce safety in a semi-arid area[J]. Water Research,2018-01-01,144