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Titolo:
Biological nutrient removal with an internal organic carbon source in piggery wastewater treatment
Autore:
Ra, CS; Lo, KV; Shin, JS; Oh, JS; Hong, BJ;
Indirizzi:
Kangweon Natl Univ, Coll Anim Resource Sci, Chunchon 200701, South Korea Kangweon Natl Univ Chunchon South Korea 200701 nchon 200701, South Korea Univ British Columbia, Dept Chem & BioResource Eng, Vancouver, BC V6T 1Z4,Canada Univ British Columbia Vancouver BC Canada V6T 1Z4 uver, BC V6T 1Z4,Canada
Titolo Testata:
WATER RESEARCH
fascicolo: 3, volume: 34, anno: 2000,
pagine: 965 - 973
SICI:
0043-1354(200002)34:3<965:BNRWAI>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
POTENTIAL ORP REGULATION; ACTIVATED-SLUDGE PROCESS; REAL-TIME CONTROL; AERATION; NITROGEN; PHOSPHORUS; DIGESTION; SYSTEM; DENITRIFICATION; REACTOR;
Keywords:
piggery wastewater; oxidation-reduction potential; endogenous respiration; real-time control; residual carbon manipulation point (RCMP); two-stage sequencing batch reactor (TSSBR);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Ra, CS Kangweon Natl Univ, Coll Anim Resource Sci, Chunchon 200701, South Korea Kangweon Natl Univ Chunchon South Korea 200701 00701, South Korea
Citazione:
C.S. Ra et al., "Biological nutrient removal with an internal organic carbon source in piggery wastewater treatment", WATER RES, 34(3), 2000, pp. 965-973

Abstract

The feasibility of using an internally available carbon source for biological nitrogen and phosphorus removal was investigated. A new integrated animal wastewater treatment process consisting of two reactors was operated with various sequences for the treatment of high strength piggery manure. The treatment process was operated with real-time control technology, which utilized the oxidation-reduction potential (ORP). In the first operation, the sludge in each reactor was completely separated (sludge separation strategy, SSS), while a portion of the sludge in the first reactor was added into the second reactor in every cycle of the second operational strategy (sludgeaddition strategy, SAS). None of the operating strategies used a supplemental carbon source to achieve enhanced phosphorus release and denitrification. By achieving successful real-time control, very high removal efficiencies of organic matter, nitrogen and phosphorus were obtained in both operations. These high performances were mainly achieved by means of biological mechanisms, not chemical and physical processes. The real-rime control made itpossible to utilize an internally available organic material for phosphorus removal and denitrification of produced NOx-N, without any external carbon sourer. Furthermore, it was found that an optimization of aeration periods could be achieved by using the tested real-time control technology, sincethe technology stopped the aeration when the targeted oxidation status occurred in treatment system. The HRT obtained in both the SSS and the SAS wasproportional to the FM ratio. Experimental data showed that the sludge addition strategy(SAS) has a practical advantage over the sludge separation strategy (SSS), in that the SAS enhanced the denitrification and resulted in constant and low effluent NOx-N concentrations. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 15:03:49