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Evaluation of sand-based stormwater filtration system for groundwater recharge wells

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Title Evaluation of sand-based stormwater filtration system for groundwater recharge wells
 
Creator Satyendra Kumar, S. K. Kamra, R. K. Yadav and J. P. Sharma
 
Subject Groundwater recharge, sand-based filter, storm-water filtration, wells.
 
Description Groundwater recharge wells have proven effective in
augmenting and improving the quality of groundwater,
but clogging remains a serious constraint in the
absence of properly designed recharge filters. A laboratory
study was undertaken in a PVC column of
22.5 cm diameter and 120 cm length to evaluate the
efficiency of coarse sand (CS) of three particle sizes
ranging between 0.35 and 1.0 mm as the top layer of a
recharge filter for seven influent sediment concentrations
of 250–3,000 mg/l. The performance was evaluated
in terms of spatial movement of sediments,
removal efficiency, recharge rates and clogging time.
The results indicated that more than 60% suspended
solids were entrapped in the upper 10 cm layer of CS,
the removal efficiency improved with increasing
thickness of the CS layer and the recharge rates
declined sharply for influent concentrations of more
than 1,000 mg/l. The study suggests use of larger particle
size CS and reducing sediment load of inflow
water. Field adaptation of these findings involves use
of CS beds of 0.7–1.0 mm particle size and minimum
75 cm thickness as the top layer in recharge filters and
providing a sediment tank or biological filters near
the recharge structures to reduce sediment load of
run-off water before entering the filter bed.
 
Date 2017-06-29T10:37:52Z
2017-06-29T10:37:52Z
2012-08
 
Type Research Paper
 
Identifier Kumar, Satyendra, Kamra, S. K., Yadav, R. K. and Sharma, J. P. (2012). Evaluation of sand-based storm water filtration system for groundwater recharge wells. Current Science. 103( 4): 395-404
http://krishi.icar.gov.in/jspui/handle/123456789/4508
 
Language English
 
Publisher Indian Academy of Sciences