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Titolo:
NUTRIENT CONTROL WITH OTHER SLUDGES IN ANAEROBIC-DIGESTION OF BPR SLUDGE
Autore:
HWANG HJ; CHOI E;
Indirizzi:
KOREA UNIV,DEPT CIVIL & ENVIRONM ENGN,5-1 ANAM DONG SEOUL 136701 SOUTH KOREA
Titolo Testata:
Water science and technology
fascicolo: 1, volume: 38, anno: 1998,
pagine: 295 - 302
SICI:
0273-1223(1998)38:1<295:NCWOSI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRECIPITATION; STRUVITE; REMOVAL; NITROGEN;
Keywords:
ANAEROBIC DIGESTION; BPR SLUDGE; CA AND MG CONTENTS; HYDROXYAPATITE; MG2+ ADDITION; NIGHTSOIL; NUTRIENT CONTROL; P-FRACTIONATION; PRIMARY SLUDGE; STRUVITE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
H.J. Hwang e E. Choi, "NUTRIENT CONTROL WITH OTHER SLUDGES IN ANAEROBIC-DIGESTION OF BPR SLUDGE", Water science and technology, 38(1), 1998, pp. 295-302

Abstract

Nutrient released from BPR sludge during anaerobic digestion was refixed with Ca2+ and Mg2+ ions as calcium phosphate and struvite. The higher contents of Ca and Mg in primary sludge and nightsoil showed potentialities to control the nutrient returning back to liquid stream whenthese sludges were mixed with BPR sludge. Addition of Mg2+ to BPR sludge was also effective. The amount of TP removed from a sludge could be computed from the amount of P refixed by the amount of Ca and Mg removed during digestion. About 40 to 45% of TP and 35 to 39% of TN removal efficiencies could be expected when primary sludge or nightsoil wasadded to BPR sludge with a volumetric ratio of 0.67/1. With 100mg/L of Mg2+ addition (Ca/Mg molar ratio of 0.81) to BPR sludge, TN and TP removal efficiencies were 52.3% and 58.4%, respectively. (C) 1998 Published by Elsevier Science Ltd. All rights reserved

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 11:39:44