Anaerobic treatment of sludge from a nitrification-denitrification landfill leachate plant

Journal Article · Sat Jul 01 04:00:00 EDT 2006 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2005.08.002· OSTI ID:20877597

Maranon, E ^[1]; Castrillon, L ^[1]; Fernandez, Y ^[1]; Fernandez, E ^[2]

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1. Chemical and Environmental Engineering Department, Higher Polytechnic School of Engineering, University of Oviedo, Campus of Viesques, 33204 Gijon (Spain)
2. COGERSA, 33697 Serin, Gijon (Spain)

The viability of anaerobic digestion of sludge from a MSW landfill leachate treatment plant, with COD values ranging between 15,000 and 19,400 mg O{sub 2} dm{sup -3}, in an upflow anaerobic sludge blanket reactor was studied. The reactor employed had a useful capacity of 9 l, operating at mesophilic temperature. Start-up of the reactor was carried out in different steps, beginning with diluted sludge and progressively increasing the amount of sludge fed into the reactor. The study was carried out over a period of 7 months. Different amounts of methanol were added to the feed, ranging between 6.75 and 1 cm{sup 3} dm{sup -3} of feed in order to favour the growth of methanogenic flora. The achieved biodegradation of the sludge using an upflow anaerobic sludge blanket Reactor was very high for an HRT of 9 days, obtaining decreases in COD of 84-87% by the end of the process. Purging of the digested sludge represented {approx}16% of the volume of the treated sludge.

• OSTI ID: 20877597
• Journal Information: Waste Management, Journal Name: Waste Management Journal Issue: 8 Vol. 26; ISSN WAMAE2; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
ANAEROBIC DIGESTION
BIODEGRADATION
DENITRIFICATION
METHANOL
NITRIFICATION
PLANTS
SANITARY LANDFILLS
SLUDGES