Performance evaluation of a two-phase anaerobic digestion process of synthetic domestic wastewater at ambient temperature

Guerrero, L; Montalvo, S; Coronado E.; Chamy, R; Poirrier, P.; Crutchik D.; Sanchez E.; De La Rubia, MA; Borja, R

Abstract

A two-phase anaerobic digestion process of synthetic domestic wastewater was studied at ambient temperature in mild to cold climates. The hydrolytic stage was carried out in a continuous stirred tank reactor with an effective volume of 1.2 L. The hydrolytic reactor operated at hydraulic retention times (HRTs) in the range of 1.3 to 2.7 h, which allowed for optimum HRT to be obtained in order to achieve a maximum amount of soluble COD. For the methanogenic stage, an up-flow anaerobic filter with a volume of 1.35 L and corrugated plastic rings as biomass immobilization support were used. During the investigation, the ambient temperature ranged between 21C and 24C. Synthetic domestic wastewater with a COD of 700 mg/L was used as substrate. The study was performed at total organic loading rates (OLRT) of 2.0-4.3 g COD/L d, with a global HRT (including both hydrolytic and methanogenic stages) of 2.8-5.8 hours. A maximum percentage of organic matter removed of 88% was achieved at a global HRT of 5.8 hours. Under these operating conditions, the production of biogas was 97% higher than that obtained in the one-phase anaerobic digestion process. Additionally, the kinetics involved in the hydrolytic stage was determined using the Contois kinetic model, which adequately predicted the experimental results.

Más información

Título según WOS: Performance evaluation of a two-phase anaerobic digestion process of synthetic domestic wastewater at ambient temperature
Título según SCOPUS: Performance evaluation of a two-phase anaerobic digestion process of synthetic domestic wastewater at ambient temperature
Título de la Revista: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES ENVIRONMENTAL ENGINEERING
Volumen: 44
Número: 7
Editorial: TAYLOR & FRANCIS INC
Fecha de publicación: 2009
Página de inicio: 673
Página final: 681
Idioma: English
URL: http://www.tandfonline.com/doi/abs/10.1080/10934520902847794
DOI:

10.1080/10934520902847794

Notas: ISI, SCOPUS