Performance of aerobic nitrite granules treating an anaerobic pre-treated wastewater originating from the potato industry.
Bioresour Technol
; 226: 211-219, 2017 Feb.
Article
em En
| MEDLINE
| ID: mdl-28002781
ABSTRACT
In this study nitrogen removal via nitrite >80% was achieved after approximately 80days in a sequencing batch reactor (SBR) treating pre-treated industrial wastewater originating from the potato industry. Thereafter, SBR performance was investigated during the formation of aerobic nitrite granules (ANG). The first granules appeared after 26days leading to full granulation after 64days. ANG showed excellent settling properties, as the Sludge Volume Index (SVI) went down to 16mL/g and a SVI10/SVI30=1 was obtained. qPCR analysis showed that slow growing organisms, especially polyphosphate accumulating organisms (PAO) were stimulated by an anaerobic feeding strategy. The average nitrogen removal was 95.3% over the entire operational period, and it mainly followed the "nitrite-route". Moreover, with ANG also phosphorus removal efficiencies up to 65.7% could be achieved. However, it has to be mentioned that nitrous oxide was an important denitrification product, which implies some environmental concerns.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Esgotos
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Solanum tuberosum
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Eliminação de Resíduos Líquidos
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Reatores Biológicos
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Águas Residuárias
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Nitritos
Idioma:
En
Revista:
Bioresour Technol
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Bélgica