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http://hdl.handle.net/10397/2444
Title: | Map precipitation from landfill leachate and seawater bittern waste | Authors: | Li, XZ Zhao, QL |
Issue Date: | Sep-2002 | Source: | Environmental technology, Sept. 2002, v. 23, no. 9, p. 989-1000 | 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 | Keywords: | Landfill leachate Ammonium-nitrogen Magnesium ammonium phosphate (MAP) Struvite Crystallization and precipitation |
Publisher: | Selper Ltd | Journal: | Environmental technology | 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 |
Appears in Collections: | Journal/Magazine Article |
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