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Effectiveness of Horizontal Filter for Artificial Groundwater Recharge Structure

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Title Effectiveness of Horizontal Filter for Artificial Groundwater Recharge Structure
 
Creator Kumar, Satyendra, Kamra, S. K., Yadav, R . K., Narjary, Bhaskar
 
Subject Recharge structure, recharge filter, horizontal filter
 
Description Performance of two new designs of recharge filters involving modified flow pattern of recharging water from
vertical to horizontal was evaluated at CSSRI, Karnal. Inflow water of 500, 1000, 1500, and 3000 ppm sediment
load were passed through such horizontal filters and performance was assessed in form of removal efficiency (RE)
and filtration rates. In the first design of horizontal filter (HF1), layers of varying thickness and densities of two
biological materials (coir and rice husk) alone and in combination with 20 or 25 cm thick coarse sand layers were
utilized, and performance was evaluated at varying sediment loads for different combinations in comparison to
conventional vertical filters. In the second design of horizontal filter (HF2), layers of synthetic (geo-textile and
plastic net) and jute cloth (jute bag) and newar (a densely knitted cotton strip used in cot making) material were
wrapped around perforated portion of recharge well pipe in different numbers and evaluated at different sediment
loads. Results indicated that 25 cm thick sand layer recorded highest RE of more than 90% at all sediment loads
in HF1. Coir and rice husk alone (50 cm thick layer of 92.6 kg.m-3 and 125 kg.m-3 density, respectively) recorded
RE of 85 per cent. At 3000 ppm sediment load, vertical filter clogged within 1 h, while clogging in HF1 consisting
coir or rice husk and sand layer occurred after 8-9 h, indicating advantage of the horizontal filter. In HF2, geotextile
and newar recorded RE more than 90%, but the filtration rate was substantially low. The results revealed
that performance of recharge filter can be improved by arranging filter materials horizontally, followed by a sand
layer to inflow water at the end. However, larger surface area will be required in horizontal filters as compared to
vertical filters to obtain desired filtration rate
 
Date 2017-06-23T11:10:16Z
2017-06-23T11:10:16Z
2014
 
Type Research Paper
 
Identifier Kumar, Satyendra, Kamra, S. K., Yadav, R . K., Narjary, B. (2014). Effectiveness of Horizontal Filter for Artificial Groundwater Recharge Structure. Journal of Agricultural Engineering, 51 (3): 24 – 33.
http://krishi.icar.gov.in/jspui/handle/123456789/4459
 
Language English
 
Publisher Indian Society of Agricultural Engineers, India