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Titolo:
EFFECTS ON ANAEROBIC-DIGESTION OF SEWAGE-SLUDGE PRETREATMENT
Autore:
CHOI HB; HWANG KY; SHIN EB;
Indirizzi:
KOREA ADV INST SCI & TECHNOL,ENVIRONM RES CTR,POB 131 SEOUL SOUTH KOREA HANYANG UNIV,DEPT CIVIL ENGN SEOUL 133791 SOUTH KOREA
Titolo Testata:
Water science and technology
fascicolo: 10, volume: 35, anno: 1997,
pagine: 207 - 211
SICI:
0273-1223(1997)35:10<207:EOAOSP>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Keywords:
ANAEROBIC DIGESTION; DIGESTION RATE; WASTE-ACTIVATED SLUDGE PRETREATMENT; CELL RUPTURE; JET AND SMASH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
H.B. Choi et al., "EFFECTS ON ANAEROBIC-DIGESTION OF SEWAGE-SLUDGE PRETREATMENT", Water science and technology, 35(10), 1997, pp. 207-211

Abstract

This research investigates the effect of sludge pretreatment on the anaerobic digestion of waste-activated sludge (WAS). In the key of thissludge pretreatment process, bacteria in the WAS were ruptured by mechanical jet and smashed under pressurized conditions. The protein concentrations in the sludge varied significantly after pretreatment. Protein concentration increased according to jet times and pressure. In batch experiments, volatile solids (VS) removal efficiencies were 13 similar to 50% when the WAS pretreated once under 30 bar was fed into an anaerobic digester with 2 similar to 26 day retention time. In the same operating conditions, when intact WAS was fed into the digester, VS removal efficiencies were 2 similar to 35%. Therefore, it is recognized that higher digestion efficiencies of the WAS were obtained through a mechanical pretreatment of sludge. (C) 1997 IAWQ. Published by Elsevier Science Ltd.

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Documento generato il 06/07/20 alle ore 05:45:51