How useful are small-scale soil hydraulic property measurements for large-scale vadose zone modeling?

2002 ◽  
pp. 247-258 ◽  
Author(s):  
Jan W. Hopmans ◽  
Don R. Nielsen ◽  
Keith L. Bristow
Keyword(s):  
Vadose Zone ◽  
Large Scale ◽  
Small Scale ◽  
Hydraulic Property ◽  
Soil Hydraulic Property ◽  
Zone Modeling ◽  
Soil Hydraulic ◽  
Small Scale Soil

scholarly journals Pedotransfer Function for the Brunswick Soil Hydraulic Property Model and Comparison to the van Genuchten‐Mualem Model

2020 ◽  
Vol 56 (9) ◽  
Author(s):  
Tobias K. D. Weber ◽  
Michael Finkel ◽  
Maria Gonçalves ◽  
Harry Vereecken ◽  
Efstathios Diamantopoulos
Keyword(s):  
Pedotransfer Function ◽  
Hydraulic Property ◽  
Soil Hydraulic Property ◽  
Property Model ◽  
Soil Hydraulic

scholarly journals Low Trihalomethane Formation during Managed Aquifer Recharge with Chlorinated Desalinated Water

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 711 ◽  
Author(s):  
Anat Bernstein ◽  
Raz Studny ◽  
Vinolia Shyntychea ◽  
Daniel Kurtzman ◽  
Yonatan Ganot ◽  
...  
Keyword(s):  
Drinking Water ◽  
Vadose Zone ◽  
Large Scale ◽  
Managed Aquifer Recharge ◽  
Small Scale ◽  
Aquifer Recharge ◽  
Unique Case ◽  
Order Of Magnitude ◽  
By Products

Trihalomethanes (THMs) are toxic disinfection by-products, formed in the reaction of chlorine with organic matter. This work aimed to study THM formation during a unique case study of managed aquifer recharge (MAR) with chlorinated desalinated seawater. THM formation was tested in the field, along a 3.0 m deep vadose zone gallery. Two small-scale experiments were conducted in the site, with untreated and with bromide spiked desalinated seawater. These were accompanied by a large-scale, ~1-month long operational MAR event. In the small-scale experiments, THM concentrations were shown to increase with bromide concentrations, with increasing dominance of the brominated species. Nevertheless, concentrations remained within the single µg/L range, which is an order of magnitude lower than drinking water regulations. Such low THM concentrations were also determined in the large-scale event. In both cases, THM formation occurred in the ponding water, without significant formation or degradation in the upper 3.0 m of the vadose zone. This study shows that MAR with chlorinated (<0.5 mg/L) desalinated seawater through sandy infiltration basins does not pose a threat to drinking water quality at this site.

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