Development of composite radial filter for recharging aquifer with runoff from agricultural field

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dc.contributor.advisorJ P Singh
dc.contributor.authorHansra, Gursharan Deep Singh
dc.date.accessioned2021-10-26T09:39:34Z
dc.date.available2021-10-26T09:39:34Z
dc.date.issued2021
dc.description.abstractA lab scale model of composite radial filter was designed, fabricated and developed for the removal of N, P and K in runoff water from rice field for recharging aquifer. Zeolite (Z), charcoal activated (C), coarse sand (CS) and gravel (G) filter materials were placed in annular concentric rings of composite radial filter in different combination of thickness, viz. 1:2:4:4, 1:3:4:4, 1:2:2:4, 1:3:2:4 and 0:2:1:2 for treatments T1, T2, T3, T4 and T5 respectively. Sodium hypochlorite solution was injected at the rate of 0.1 ml per unit discharge (lps) by using chlorination unit at the outlet of the radial filter to remove bacteriological contamination of filtered water. The performance of composite radial filter was evaluated by analyzing runoff water samples before and after filtration for four inflow rates viz. 0.42, 0.82, 1.24 and 1.66 lps. The value of NO3-N, P2O5 and K2O of filtered water was found to be within permissible limit at all flow rates. The T5 treatment consisting of filter materials C, CS and G with thickness of 20, 10 and 20 cm (2:1:2) respectively was found to be the best compared to the other four treatments (T1, T2, T3 and T4) on basis of N, P2O5 and K removal efficiency and lowest cost price. The removal efficiency of NO3-N and P was found to be about 80 % after 5 hours of filtration from T5 treatment while K2O removal efficiency was low about 65 % after half an hour of filtration. The filter materials were washed after 5 hours of filtration and reused in composite radial filter for filtration. The value of NO3-N, P2O5 and K2O of filtered water from reused filter media after washing was found to be 5.3, 5.8 and 10.9 ppm respectively which are slightly more than value obtained from the initially fresh filter materials for same time of operation.en_US
dc.identifier.citationHansra, Gursharan Deep Singh (2021). Development of composite radial filter for recharging aquifer with runoff from agricultural field (Unpublished M.Tech. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810177325
dc.keywordsAquifer, composite radial filter, NPK, recharging, removal, rice field, runoff water.en_US
dc.language.isoEnglishen_US
dc.pages51en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemDevelopment of composite radial filter for recharging aquifer with runoff from agricultural fielden_US
dc.subSoil and Water Engineeringen_US
dc.themeDevelopment of composite radial filter for recharging aquifer with runoff from agricultural fielden_US
dc.these.typeM.Tech.en_US
dc.titleDevelopment of composite radial filter for recharging aquifer with runoff from agricultural fielden_US
dc.typeThesisen_US
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