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Statements

Subject Item
n2:RIV%2F62156489%3A43210%2F11%3A00169274%21RIV14-MSM-43210___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
This paper presents a comparison of the calculated values of settling velocity of sand with values determined experimentally. Correct determination of the settling velocity of the sand is very important for the effective design of equipment for primary treatment of the waste water, namely a sand trap. A sample of sand taken from the wastewater treatment plant was deprived of organic components and then dried at 105 °C for 12 hours. On the basis of sieve analysis conducted in accordance to standard ČSN EN 933-1, individual grains of sand were divided into fractions of 0.125 mm, 0.25 mm, 0.5 mm, 1 mm and 2 mm. Settling velocity fractions of each species was first identified experimentally on the laboratory track path. These experimental values were further compared with values calculated according to the Newton's Law, Stokes Law and Allen's Law. Following evaluation of experimental and calculated data, based on calculated deviations it was shown that in case of particles with a diameter of 0.5 mm, 0.25 mm and 0.125 mm it is advisable to use a various type of equation than the equations recommended for the respective flow type. Deviations between calculated and experimentally measured data are relatively high and reach up to 69 %. This paper presents a comparison of the calculated values of settling velocity of sand with values determined experimentally. Correct determination of the settling velocity of the sand is very important for the effective design of equipment for primary treatment of the waste water, namely a sand trap. A sample of sand taken from the wastewater treatment plant was deprived of organic components and then dried at 105 °C for 12 hours. On the basis of sieve analysis conducted in accordance to standard ČSN EN 933-1, individual grains of sand were divided into fractions of 0.125 mm, 0.25 mm, 0.5 mm, 1 mm and 2 mm. Settling velocity fractions of each species was first identified experimentally on the laboratory track path. These experimental values were further compared with values calculated according to the Newton's Law, Stokes Law and Allen's Law. Following evaluation of experimental and calculated data, based on calculated deviations it was shown that in case of particles with a diameter of 0.5 mm, 0.25 mm and 0.125 mm it is advisable to use a various type of equation than the equations recommended for the respective flow type. Deviations between calculated and experimentally measured data are relatively high and reach up to 69 %.
dcterms:title
Study of Settling Velocity of Sand Particles Located Wastewater Treatment Plant Study of Settling Velocity of Sand Particles Located Wastewater Treatment Plant
skos:prefLabel
Study of Settling Velocity of Sand Particles Located Wastewater Treatment Plant Study of Settling Velocity of Sand Particles Located Wastewater Treatment Plant
skos:notation
RIV/62156489:43210/11:00169274!RIV14-MSM-43210___
n10:predkladatel
n11:orjk%3A43210
n3:aktivita
n9:S
n3:aktivity
S
n3:cisloPeriodika
1
n3:dodaniDat
n12:2014
n3:domaciTvurceVysledku
n14:7823487 n14:8829985
n3:druhVysledku
n13:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
233115
n3:idVysledku
RIV/62156489:43210/11:00169274
n3:jazykVysledku
n6:eng
n3:klicovaSlova
settling velocity; wastewater treatment plant; sedimentation; primary treatment; sand
n3:klicoveSlovo
n5:sedimentation n5:wastewater%20treatment%20plant n5:settling%20velocity n5:sand n5:primary%20treatment
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[FAAE3EF1E55B]
n3:nazevZdroje
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
n3:obor
n18:DJ
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n12:2011
n3:svazekPeriodika
59
n3:tvurceVysledku
Vítěz, Tomáš Trávníček, Petr
s:issn
1211-8516
s:numberOfPages
6
n8:organizacniJednotka
43210