Effects of extracellular polymeric substances on granulation of anoxic sludge in sequencing batch reactor

Variations of extracellular polymeric substances (EPS) and its components with sludge granulation were examined in a lab-scale sequencing batch reactor (SBR) which was fed with sodium nitrate and sodium acetate. Ultrasonication plus cation exchange resin (CER) were used as the EPS extraction method....

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 66(2012), 3 vom: 31., Seite 543-8
1. Verfasser: Wang, Binbin (VerfasserIn)
Weitere Verfasser: Liu, Shunlian, Zhao, Hongmei, Zhang, Xinyan, Peng, Dangcong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Bacterial Proteins Biopolymers DNA, Bacterial Nitrates Nitrites Polysaccharides Sewage Solutions mehr... Trace Elements Nitrogen N762921K75 Oxygen S88TT14065
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520 |a Variations of extracellular polymeric substances (EPS) and its components with sludge granulation were examined in a lab-scale sequencing batch reactor (SBR) which was fed with sodium nitrate and sodium acetate. Ultrasonication plus cation exchange resin (CER) were used as the EPS extraction method. Results showed that after approximately 90 d cultivation, the sludge in the reactor was almost granulated. The content of extracellular polysaccharides increased from 10.36 mg/g-VSS (volatile suspended solids) at start-up with flocculent sludge to 23.18 mg/g-VSS at 91 d with matured granular sludge, while the content of extracellular proteins were almost unchanged. Polysaccharides were the major components of EPS in anoxic granular sludge, accounting for about 70.6-79.0%, while proteins and DNA accounted for about 16.5-18.9% and 4.6-9.9%, respectively. It is proposed that EPS play a positive role in anoxic sludge granulation and polysaccharides might be strongly involved in aggregation of flocs into granules 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a DNA, Bacterial  |2 NLM 
650 7 |a Nitrates  |2 NLM 
650 7 |a Nitrites  |2 NLM 
650 7 |a Polysaccharides  |2 NLM 
650 7 |a Sewage  |2 NLM 
650 7 |a Solutions  |2 NLM 
650 7 |a Trace Elements  |2 NLM 
650 7 |a Nitrogen  |2 NLM 
650 7 |a N762921K75  |2 NLM 
650 7 |a Oxygen  |2 NLM 
650 7 |a S88TT14065  |2 NLM 
700 1 |a Liu, Shunlian  |e verfasserin  |4 aut 
700 1 |a Zhao, Hongmei  |e verfasserin  |4 aut 
700 1 |a Zhang, Xinyan  |e verfasserin  |4 aut 
700 1 |a Peng, Dangcong  |e verfasserin  |4 aut 
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773 1 8 |g volume:66  |g year:2012  |g number:3  |g day:31  |g pages:543-8 
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