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Titolo:
SIMULTANEOUS REMOVAL OF ORGANIC AND NITROGEN-COMPOUNDS IN INTERMITTENTLY AERATED ACTIVATED-SLUDGE PROCESS USING MAGNETIC SEPARATION
Autore:
SAKAI Y; MIAMA T; TAKAHASHI F;
Indirizzi:
UTSUNOMIYA UNIV,FAC ENGN,DEPT APPL CHEM UTSUNOMIYA TOCHIGI 321 JAPAN UTSUNOMIYA UNIV,FAC ENGN,DEPT APPL CHEM UTSUNOMIYA TOCHIGI 321 JAPAN
Titolo Testata:
Water research
fascicolo: 8, volume: 31, anno: 1997,
pagine: 2113 - 2116
SICI:
0043-1354(1997)31:8<2113:SROOAN>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
FERROMAGNETIC POWDER; SEWAGE-TREATMENT; PHOSPHORUS;
Keywords:
ACTIVATED SLUDGE; CODCR; ORGANIC REMOVAL; DENITRIFICATION; FERROMAGNETIC POWDER; INTERMITTENT AERATION; MAGNETIC SEPARATION; MAGNETITE; NITRIFICATION; NITROGEN REMOVAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
Y. Sakai et al., "SIMULTANEOUS REMOVAL OF ORGANIC AND NITROGEN-COMPOUNDS IN INTERMITTENTLY AERATED ACTIVATED-SLUDGE PROCESS USING MAGNETIC SEPARATION", Water research, 31(8), 1997, pp. 2113-2116

Abstract

Magnetic separation was introduced to an activated sludge process to improve the solid-liquid separation characteristics of the sludge. Theprocess was operated with the intermittent aeration method and applied for the removal of organic matter and nitrogen in wastewater. The activated sludge supplemented with magnetite (Fe3O4) powder (magnetic sludge) exhibits a ferromagnetic property and deposited on the surface of magnetic disks due to magnetic force. The magnetic separation apparatus (composed of rotary magnetic disks and scrapers) separated treatedwater from the sludge suspension of 13-22 g VSS 1(-1) within 5 min. Compared with the sedimentational separation process, the magnetic separation technique showed better performance. Simultaneous removal of about 89% of TKN and about 92% of soluble CODct in influent was performed under loading rates of 0.92 g CODcr 1(-1) d(-1) and 0.10 g TKN 1(-1)d(-1), respectively, with a non-aeration/aeration cycle of 40/20 min. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 14:45:51