The treatment of high strength protein wastewater by UASB system

The objective of this investigation was to treat the high strength protein wastewater by UASB system. The wastewater of this experiment had COD 2,938 mg/l, SS 478 mg/l and total of nitrogen 435 mg/l. The granule was developed from bacteria of activated sludge system as suspended sludge by fermenting...

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Main Authors: Ploypatarapinyo, P., Natpinit, S., Jenvanitpanjakul, P.
Format: Article
Language:English
Published: Prince of Songkla University 2006-01-01
Series:Songklanakarin Journal of Science and Technology (SJST)
Subjects:
Online Access:http://www.sjst.psu.ac.th/journal/28_1_pdf/20_wastewater_treatment.pdf
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author Ploypatarapinyo, P.
Natpinit, S.
Jenvanitpanjakul, P.
author_facet Ploypatarapinyo, P.
Natpinit, S.
Jenvanitpanjakul, P.
author_sort Ploypatarapinyo, P.
collection DOAJ
description The objective of this investigation was to treat the high strength protein wastewater by UASB system. The wastewater of this experiment had COD 2,938 mg/l, SS 478 mg/l and total of nitrogen 435 mg/l. The granule was developed from bacteria of activated sludge system as suspended sludge by fermenting anaerobically at 40ºC for 1 month and acclimatizing with the high strength protein wastewater for another month. The MLSS and MLVSS of the started bacterial sludge were 7,105 mg/l and 5,360 mg/l respectively.The maximum organic volume loading of this system was 6 kg COD/m3.d at the hydraulic retention time 12 hrs. The efficiency of COD and BOD removal was 88.38 and 93.07% respectively. The biogas production was 0.52 l/g CODr.d. The content of methane gas was 76.20%. The bacterial suspended sludge was developed to granular sludge with the granule's size of <0.25 mm, 0.25-0.5 mm, 0.5-1.0 mm and >1.0 mm as 86.02%, 2.05%, 11.84% and 0.09% respectively.
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spelling doaj.art-982b2b9314a04342968ee274850fc3a12022-12-22T00:53:51ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952006-01-01281217226The treatment of high strength protein wastewater by UASB systemPloypatarapinyo, P.Natpinit, S.Jenvanitpanjakul, P.The objective of this investigation was to treat the high strength protein wastewater by UASB system. The wastewater of this experiment had COD 2,938 mg/l, SS 478 mg/l and total of nitrogen 435 mg/l. The granule was developed from bacteria of activated sludge system as suspended sludge by fermenting anaerobically at 40ºC for 1 month and acclimatizing with the high strength protein wastewater for another month. The MLSS and MLVSS of the started bacterial sludge were 7,105 mg/l and 5,360 mg/l respectively.The maximum organic volume loading of this system was 6 kg COD/m3.d at the hydraulic retention time 12 hrs. The efficiency of COD and BOD removal was 88.38 and 93.07% respectively. The biogas production was 0.52 l/g CODr.d. The content of methane gas was 76.20%. The bacterial suspended sludge was developed to granular sludge with the granule's size of <0.25 mm, 0.25-0.5 mm, 0.5-1.0 mm and >1.0 mm as 86.02%, 2.05%, 11.84% and 0.09% respectively.http://www.sjst.psu.ac.th/journal/28_1_pdf/20_wastewater_treatment.pdfhigh strength protein wastewaterUASBgranulationbiogasmethane gas
spellingShingle Ploypatarapinyo, P.
Natpinit, S.
Jenvanitpanjakul, P.
The treatment of high strength protein wastewater by UASB system
Songklanakarin Journal of Science and Technology (SJST)
high strength protein wastewater
UASB
granulation
biogas
methane gas
title The treatment of high strength protein wastewater by UASB system
title_full The treatment of high strength protein wastewater by UASB system
title_fullStr The treatment of high strength protein wastewater by UASB system
title_full_unstemmed The treatment of high strength protein wastewater by UASB system
title_short The treatment of high strength protein wastewater by UASB system
title_sort treatment of high strength protein wastewater by uasb system
topic high strength protein wastewater
UASB
granulation
biogas
methane gas
url http://www.sjst.psu.ac.th/journal/28_1_pdf/20_wastewater_treatment.pdf
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