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Titolo:
Nutrient removal and ORP monitoring in the intermittent aeration system with continuous inflow
Autore:
Choung, YK; Kim, HS;
Indirizzi:
Yonsei Univ, Dept Urban Planning & Engn, Sudaemun Ku, Seoul 120749, South Korea Yonsei Univ Seoul South Korea 120749 aemun Ku, Seoul 120749, South Korea Yonsei Univ, Dept Civil Engn, Sudaemun Ku, Seoul 120749, South Korea Yonsei Univ Seoul South Korea 120749 aemun Ku, Seoul 120749, South Korea
Titolo Testata:
ENVIRONMENTAL TECHNOLOGY
fascicolo: 4, volume: 21, anno: 2000,
pagine: 375 - 385
SICI:
0959-3330(200004)21:4<375:NRAOMI>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACTIVATED-SLUDGE;
Keywords:
denitrification; intermittent aeration system; nitrification; nutrient removal; ORP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Choung, YK Yonsei Univ, Dept Urban Planning & Engn, Sudaemun Ku, Seoul 120749, South Korea Yonsei Univ Seoul South Korea 120749 eoul 120749, South Korea
Citazione:
Y.K. Choung e H.S. Kim, "Nutrient removal and ORP monitoring in the intermittent aeration system with continuous inflow", ENV TECHNOL, 21(4), 2000, pp. 375-385

Abstract

Intermittent aeration system with continuous inflow (IASWCI) was fed with synthetic wastewater to clarify the possibility of simultaneous removal of nitrogen, phosphorus, and organic substances by modifying operational schedule. This system was composed of aerobic, anoxic, anaerobic, aerobic, settle and decant phases in a single tank. Synthetic wastewater was flown continuously into the pre-react zone. Anaerobic phase was provided for the phosphorus release without mixing and aerating. The laboratory scale system was operated for four months. phosphorus release from the sludge was measured inthe anaerobic condition after denitrification. The following luxury uptakeof phosphorus was observed the second aerobic phase. During 4 months, chemical oxygen demand (COD) removal efficiencies were greater than 90%. The average COD effluent was approximately 17 mgl(-1). The effluent had, average,during phosphorus concentration less than 0.5 mgl(-1), and ammonia nitrogen concentration lower than 3 mgl(-1). A correlation exists between oxidation-reduction potential (ORP) and observed P release in the anaerobic phase, and ORP and measured P uptake in the second aerobic,ic phase. In this case,ORP appears to be related to measured P release and P uptake, as is indicated by the good fit of the linear regression equation. It can he used to good advantage at the operational level to give plant operators a real time indication of P release and uptake condition in this process.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 03:49:43