Nitrogen removal from landfill leachate using single or combined processes
Journal
Environmental Technology
Journal Volume
26
Journal Issue
4
Pages
373-380
Date Issued
2005
Author(s)
Abstract
The municipal solids waste (MSW) collected at Shanghai includes a high proportion of food waste, which is easily hydrolyzed to generate ammonia-nitrogen in leachate. This study investigated the efficiency of nitrogen removal from landfill leachate employing four different treatment processes. The simulated rainfall and direct leachate recycling produced strong leachate with high ammonia-nitrogen content, and resulted in the removal of only a small amount of nitrogen. Although pretreating the leachate using an aerobic reactor removed some nitrogen, most of which was transformed to biomass because of the high organic loading applied. Using the three-compartment system, which comprises a landfill column with fresh MSW, a column with well-decomposed refuse layer as the methane generator, and a nitrifier, the ammonia-nitrogen was converted into nitrogen gas and hence removed. Experimental results demonstrated the feasibility of adopting the three-compartment system for managing nitrogen in landfill leachate generated from high-nitrogen-content NSW. ? Selper Ltd, 2005.
Subjects
Combined process
Leachate recycling
Nitrogen removal
Pre-treatment
Other Subjects
Ammonia; Food waste; Municipal solid waste; Nitrogen removal; Recycling; Ammonia nitrogen; Different treatments; High nitrogen content; High organic loading; Landfill leachates; Leachate recycling; Pre-Treatment; Simulated rainfall; Leachate treatment; ammonia; methane; nitrogen; organic compound; rain; leachate; municipal waste; Nitrogen; pollutant removal; Wastewater treatment; aerobic reactor; article; biomass conversion; compartment model; controlled study; decomposition; feasibility study; food; hydrolysis; landfill; landfill leachate; municipal solid waste; nitrification; process design; recycling; solid waste management; waste component removal; waste disposal
Type
journal article