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Statements

Subject Item
n2:RIV%2F60461373%3A22320%2F13%3A43895296%21RIV14-MSM-22320___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
The anaerobic digestion of primary and waste activated sludge generates biogas that can be converted into energy to power the operation of a sewage wastewater treatment plant (WWTP). But can the biogas generated by anaerobic sludge digestion ever completely satisfy the electricity requirements of a WWTP with ?standard? energy consumption (i.e. industrial pollution not treated, no external organic substrate added)? With this question in mind, we optimized biogas production at Prague?s Central Wastewater Treatment Plant in the following ways: enhanced primary sludge separation; thickened waste activated sludge; implemented a lysate centrifuge; increased operational temperature; improved digester mixing. With these optimizations, biogas production increased significantly to 12.5 m3 per population equivalent per year. In turn, this led to an equally significant increase in specific energy production from approximately 15 to 23.5 kWh per population equivalent per year. We compared these full-scale results with those obtained from WWTPs that are already energy self-sufficient, but have exceptionally low energy consumption. Both our results and our analysis suggest that, with the correct optimization of anaerobic digestion technology, even WWTPs with ?standard? energy consumption can either attain or come close to attaining energy self-sufficiency. The anaerobic digestion of primary and waste activated sludge generates biogas that can be converted into energy to power the operation of a sewage wastewater treatment plant (WWTP). But can the biogas generated by anaerobic sludge digestion ever completely satisfy the electricity requirements of a WWTP with ?standard? energy consumption (i.e. industrial pollution not treated, no external organic substrate added)? With this question in mind, we optimized biogas production at Prague?s Central Wastewater Treatment Plant in the following ways: enhanced primary sludge separation; thickened waste activated sludge; implemented a lysate centrifuge; increased operational temperature; improved digester mixing. With these optimizations, biogas production increased significantly to 12.5 m3 per population equivalent per year. In turn, this led to an equally significant increase in specific energy production from approximately 15 to 23.5 kWh per population equivalent per year. We compared these full-scale results with those obtained from WWTPs that are already energy self-sufficient, but have exceptionally low energy consumption. Both our results and our analysis suggest that, with the correct optimization of anaerobic digestion technology, even WWTPs with ?standard? energy consumption can either attain or come close to attaining energy self-sufficiency.
dcterms:title
Energy self-sufficient sewage wastewater treatment/ plants: is optimized anaerobic sludge digestion the key? Energy self-sufficient sewage wastewater treatment/ plants: is optimized anaerobic sludge digestion the key?
skos:prefLabel
Energy self-sufficient sewage wastewater treatment/ plants: is optimized anaerobic sludge digestion the key? Energy self-sufficient sewage wastewater treatment/ plants: is optimized anaerobic sludge digestion the key?
skos:notation
RIV/60461373:22320/13:43895296!RIV14-MSM-22320___
n8:predkladatel
n9:orjk%3A22320
n3:aktivita
n20:Z
n3:aktivity
Z(MSM6046137308)
n3:cisloPeriodika
8
n3:dodaniDat
n6:2014
n3:domaciTvurceVysledku
n13:2220660 n13:2230259 n13:9060561
n3:druhVysledku
n16:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
72887
n3:idVysledku
RIV/60461373:22320/13:43895296
n3:jazykVysledku
n17:eng
n3:klicovaSlova
wastewater treatment; sewage sludge; energy self-sufficiency; energy production; energy consumption; digestion efficiency improvement; Anaerobic digestion
n3:klicoveSlovo
n7:energy%20consumption n7:digestion%20efficiency%20improvement n7:Anaerobic%20digestion n7:sewage%20sludge n7:wastewater%20treatment n7:energy%20self-sufficiency n7:energy%20production
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[1884903CF963]
n3:nazevZdroje
Water Science and Technology
n3:obor
n12:DJ
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
6
n3:rokUplatneniVysledku
n6:2013
n3:svazekPeriodika
68
n3:tvurceVysledku
Dohanyos, Michal Kutil, Josef Zábranská, Jana Todt, Vladimír Beneš, Ondřej Jeníček, Pavel
n3:zamer
n18:MSM6046137308
s:issn
0273-1223
s:numberOfPages
6
n10:doi
10.2166/wst.2013.423
n19:organizacniJednotka
22320