Landfill leachate treatment using a rotating biological contactor and an upward-flow anaerobic sludge bed reactor

Journal Article · Sun Jul 01 04:00:00 EDT 2007 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2006.08.003· OSTI ID:21023871

Vergara, M; Moreno, Y ^[1]

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1. Centro de Estudios e Investigaciones Ambientales, Universidad Industrial de Santander, Calle 9a Carrera 27, Aptdo. Aereo 678, Bucaramanga (Colombia)

This paper describes the feasibility of an aerobic system (rotating biological contactor, RBC) and a biological anaerobic system (upward-flow anaerobic sludge bed reactor) at small scale for the treatment of a landfill leachate. In the first phase of the aerobic system study, a cyclic-batch RBC system was used to select perforated acetate discs among three different acetate disc configurations. These discs were chosen on the basis of high COD removal (65%) and biological stability. In the second phase, the RBC system (using four stages) was operated continuously at different hydraulic retention times (HRT), at different rotational speeds, and with varying organic concentrations of the influent leachate (2500-9000 mg L{sup -1}). Forty percent of the total surface area of each perforated disc was submerged in the leachate. A COD removal of about 52% was obtained at an HRT of 24 h and a rotational speed of 6 rpm. For the anaerobic system, the reactor was evaluated with a volumetric organic load of 3273 g-COD m{sup -3} day{sup -1} at an HRT of 54, 44, 39, 24 and 17 h. At these conditions, the system reached COD removal efficiencies of 62%, 61%, 59%, 44% and 24%, respectively.

• OSTI ID: 21023871
• Journal Information: Waste Management, Journal Name: Waste Management Journal Issue: 5 Vol. 27; ISSN WAMAE2; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ACETATES
LEACHATES
SANITARY LANDFILLS
SLUDGES
SURFACE AREA