Nitrogen removal from recycled landfill leachate by ex situ nitrification and in situ denitrification
Resource
Waste Management 26 (8): 838-845
Journal
Waste Management
Journal Volume
26
Journal Issue
8
Pages
838-845
Date Issued
2006
Date
2006
Author(s)
Abstract
A three-compartment system, comprising a landfill column with fresh municipal solid waste, a column with a well-decomposed refuse layer as methane producer, and a sequential batch reactor as ex situ nitrifying reactor, was employed to remove nitrogen from municipal solid waste leachate. Since food waste comprised a major portion of refuse collected in Shanghai, an intense hydrolysis reaction occurred and caused the rapid accumulation of ammonia nitrogen (NH3-N) and total organic carbon in the leachate. This paper discusses the role of the three mentioned units and the design and operation of the proposed system. With most NH3-N being converted to nitrite nitrogen (NO2- s(-) N) or nitrate nitrogen (NO3- s(-) N) by the nitrifying reactor, and with the well-decomposed refuse layer transforming most dissolved organic compounds to CO2, carbonates and methane, it was found that the fresh refuse column could efficiently denitrify the hydrolyzed nitrogen to N2 gas. The role of the three mentioned units and comments on the design and operation of the proposed system are also discussed. © 2005 Elsevier Ltd. All rights reserved.
Other Subjects
In situ denitrification; Leachates; Municipal solid wastes; Organic carbon; Chemical reactors; Denitrification; Hydrolysis; Nitrification; Nitrogen removal; Recycling; Leachate treatment; ammonia; carbonic acid; methane; nitrite; nitrogen; organic carbon; Chemical reactors; Denitrification; Hydrolysis; Leachate treatment; Nitrification; Nitrogen removal; Recycling; ammonium nitrate; bioreactor; denitrification; dissolved organic matter; domestic waste; hydrolysis; leachate; municipal solid waste; nitrification; total organic carbon; article; China; denitrification; hydrolysis; nitrification; priority journal; Ammonia; Bioreactors; Carbon; Carbon Dioxide; Carbonates; Hydrogen-Ion Concentration; Methane; Nitrates; Nitrites; Nitrogen; Refuse Disposal; Water Pollutants, Chemical; Water Purification; Asia; China; Eurasia; Far East; Shanghai
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
77.pdf
Size
191.2 KB
Format
Adobe PDF
Checksum
(MD5):93ba2a734dc416ef20498204b4419d0c