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Field site soil aquifer treatment shows enhanced wastewater quality: evidence from vadose zone hydro-geophysical observations

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Title Field site soil aquifer treatment shows enhanced wastewater quality: evidence from vadose zone hydro-geophysical observations
 
Creator Sahya, A.
Sonkamble, S.
Jampani, Mahesh
Rao, A. N.
Amerasinghe, Priyanie
 
Subject wastewater treatment
nature-based solutions
water quality
parameters
experimentation
soil moisture
aquifers
groundwater
wastewater irrigation
periurban areas
river basins
hydrogeology
pollutants
 
Description Soil aquifer treatment (SAT) is an emerging, nature-based, economically viable wastewater treatment solution. Currently, most SAT experiments are done at the laboratory scale, which cannot generate the same conditions as natural field sites and limits the understanding of treatment efficiency. The current study carried out in situ SAT experiments in the Musi River basin in India, where wastewater irrigation is a common practice. SAT efficiency was determined using an integrated approach, including electrical resistivity tomography (ERT) surveys, soil investigations (grain size, permeability, and moisture measurements), and biochemical characterization of raw and SAT treated wastewater. The ERT scans of SAT column show lower order electrical resistivity 10-30 O-m with enhanced chargeability >5–6 mV/V attributed to the vadose zone, characterized by clay-rich soil and sandy soil up to 5–6 m depth. The increase in sand percentage (>70%) below 140–160 cm depth corroborates with the high moisture content (23.5%). The vadose zone permeability (K) 1.58 m/day and discharge (Q) 38.19 m3/day is used to determine the pollutants reduction efficiency of SAT column. Hydrogeological and biogeochemical observations reveal that the improved dissolved oxygen from
 
Date 2023-08-15
2023-08-29T03:12:17Z
2023-08-29T03:12:17Z
 
Type Journal Article
 
Identifier Sahya, A.; Sonkamble, S.; Jampani, Mahesh; Rao, A. N.; Amerasinghe, Priyanie. 2023. Field site soil aquifer treatment shows enhanced wastewater quality: evidence from vadose zone hydro-geophysical observations. Journal of Environmental Management, 345:118749. (Online first) [doi: https://doi.org/10.1016/j.jenvman.2023.118749]
0301-4797
https://hdl.handle.net/10568/131664
https://vlibrary.iwmi.org/pdf/H052159.pdf
https://doi.org/10.1016/j.jenvman.2023.118749
H052159
 
Language en
 
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Limited Access
 
Format 345:118749. (Online first)
 
Source Journal of Environmental Management