Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2444
Title: Map precipitation from landfill leachate and seawater bittern waste
Authors: Li, XZ
Zhao, QL
Keywords: Landfill leachate
Ammonium-nitrogen
Magnesium ammonium phosphate (MAP)
Struvite
Crystallization and precipitation
Issue Date: Sep-2002
Publisher: Selper Ltd
Source: Environmental technology, Sept. 2002, v. 23, no. 9, p. 989-1000 How to cite?
Journal: Environmental technology 
Abstract: The leachates generated at Hong Kong landfill sites contain high strength of ammonium-nitrogen (NK??-N) over 3,000 mg 1?? and are generally inhibitive to most biological treatment processes. To remove the NK??-N from the landfill leachates and also recover the nitrogen as a struvite fertilizer, a lab-scale study was performed to investigate the feasibility of NH??-N removal and struvite crystallization using different magnesium sources. Three combinations of chemicals, MgCl?¡P6H?O+Na?HPO?¡P12H?O, MgO+H?PO?and MgSO?¡P7H?O+Ca(H?PO?)¡PH?O, were first used at different molar ratios to precipitate NH??-N from the leachate. The experimental results indicated that NH??-N was removed by 92%, 36% and 70% respectively at pH 9.0 and a molar ratio of Mg:N:P = 1:1:1. Two synthetic se
URI: http://hdl.handle.net/10397/2444
ISSN: 0959-3330
EISSN: 1479-487X
DOI: 10.1080/09593332308618348
Rights: Environmental Technology ? 2002 Selper Ltd. This is an electronic version of an article published in Environmental Technology, 23(9),989-1000. Environmental Technology is available online at: http://www.informaworld.com, and the open URL of the article: http://www.informaworld.com/smpp/content~db=all~content=a794046232~frm=titlelink
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