Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Statistical analyses of operating conditions and power consumption characteristics in small-scale conventional activated sludge plants for sewage treatment
Autore:
Hu, HY; Goto, N; Fujie, K;
Indirizzi:
Toyohashi Univ Technol, Dept Ecol Engn, Toyohashi, Aichi 4418580, Japan Toyohashi Univ Technol Toyohashi Aichi Japan 4418580 Aichi 4418580, Japan Tsing Hua Univ, Dept Environm Sci & Engn, ESPC, Beijing 100084, Peoples R China Tsing Hua Univ Beijing Peoples R China 100084 ng 100084, Peoples R China
Titolo Testata:
ENVIRONMENTAL TECHNOLOGY
fascicolo: 10, volume: 21, anno: 2000,
pagine: 1167 - 1172
SICI:
0959-3330(200010)21:10<1167:SAOOCA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Keywords:
sewage treatment; activated sludge process; operating conditions; electric power consumption; small-scale sewage plant;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Hu, HY Toyohashi Univ Technol, Dept Ecol Engn, Tempaku Cho, Toyohashi, Aichi 4418580, Japan Toyohashi Univ Technol Tempaku Cho Toyohashi Aichi Japan 4418580 an
Citazione:
H.Y. Hu et al., "Statistical analyses of operating conditions and power consumption characteristics in small-scale conventional activated sludge plants for sewage treatment", ENV TECHNOL, 21(10), 2000, pp. 1167-1172

Abstract

Energy efficiency is one of the important factors that should be taken into account when selecting a treatment method of wastewater. In this study, the present status of the operating conditions (hydraulic retention time, aeration amount and BOD loading) and energy consumption characteristics of small-scale conventional activated sludge plants for sewage treatment in Japan was clarified through statistical analyses. A small-scale sewage plant was defined as one with a real influent flow-rate of sewage less than 5 000 m(3) d(-1) in this study. Our analytical results showed that the small-scaleactivated sludge plants investigated in this study had very good performance of BOD and COD removals but poor energy efficiency. The total power consumption in the small-scale activated sludge plants averaged at 1.0 kWh m(-3), which was twice as high as the average value for all of the sewage plants in Japan. It was demonstrated that the 'working efficiency' of an activated sludge plant, defined as the ratio of real influent flow rate to its capacity (designed value of influent flow rate), was the most important factorcontrolling the energy efficiency. Lower working efficiency significantly brought down the energy efficiency of an activated sludge plant. Optimal design of the capacity of activated sludge plants is strongly desired to havehigher energy efficiency in sewage treatment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:34:38