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231224s2014 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2014.058
|2 doi
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|a pubmed25n0790.xml
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|a eng
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|a Albizuri, J
|e verfasserin
|4 aut
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|a Validating the colloid model to optimise the design and operation of both moving-bed biofilm reactor and integrated fixed-film activated sludge systems
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 30.06.2014
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|a Date Revised 10.12.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a The paper presents a systematic study of simulations, using a previously calibrated Colloid model, from which it was found that: (i) for pure moving-bed biofilm reactor (MBBR) processes with tertiary nitrification conditions (no influent chemical oxygen demand (COD)), dissolved oxygen = 5 mg/L and residual NH4-N > 4 mgN/L, a nitrification rate of 1.2 gN/(m(2)d) was obtained at 10 °C. This rate decreases sharply when residual NH4-N is lower than 2 mgN/L, (ii) for MBBR systems with predenitrification-nitrification zones and COD in the influent (soluble and particulate), the nitrification rate (0.6 gN/(m(2)d)) is half of that in tertiary nitrification due to the effect of influent colloidal XS (particulate slowly biodegradable COD) and (iii) for integrated fixed-film activated sludge (IFAS) processes the nitrification rate in the biofilm (0.72 gN/(m(2)d)) is 20% higher than for the pure MBBR due to the lower effect of influent XS since it is adsorbed onto flocs. However, it is still 40% lower than the tertiary nitrification rate. In the IFAS, the fraction of the nitrification rate in suspension ranges from 10 to 70% when the aerobic solids retention time varies from 1.4 to 6 days
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|a Journal Article
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|a Validation Study
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|a Colloids
|2 NLM
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|a Grau, P
|e verfasserin
|4 aut
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|a Christensson, M
|e verfasserin
|4 aut
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|a Larrea, L
|e verfasserin
|4 aut
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 69(2014), 7 vom: 10., Seite 1552-7
|w (DE-627)NLM098149431
|x 0273-1223
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|g volume:69
|g year:2014
|g number:7
|g day:10
|g pages:1552-7
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|u http://dx.doi.org/10.2166/wst.2014.058
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