Removal of ammonium-nitrogen from groundwater using a fully passive permeable reactive barrier with oxygen-releasing compound and clinoptilolite

A novel fully passive permeable reactive barrier (PRB) with oxygen-releasing compound (ORC) and clinoptilolite was proposed for the removal of ammonium-nitrogen from groundwater. The PRB involves a combination of oxygen release, biological nitrification, ion exchange, and bioregeneration. A pilot-sc...

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Veröffentlicht in:	Journal of environmental management 2015-05, Vol.154, p.1-7
Hauptverfasser:	Huang, Guoxin, Liu, Fei, Yang, Yingzhao, Deng, Wei, Li, Shengpin, Huang, Yuanying, Kong, Xiangke
Format:	Artikel
Sprache:	eng
Schlagworte:	Ammonia Ammonium Compounds - chemistry Ammonium Compounds - metabolism Ammonium-nitrogen Barriers Biological Biomass Bioremediation Chemical compounds Clinoptilolite Denitrification Environment management Environmental Restoration and Remediation - methods Groundwater Groundwater - chemistry In situ remediation Ion Exchange Ion exchangers Nitrates - chemistry Nitrates - metabolism Nitrification Nitrogen Nutrient removal Oxygen - analysis Oxygen-releasing compound Permeable reactive barrier Walls Water Pollutants, Chemical - chemistry Water Pollutants, Chemical - metabolism Water Purification - methods Zeolites
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Zusammenfassung:	A novel fully passive permeable reactive barrier (PRB) with oxygen-releasing compound (ORC) and clinoptilolite was proposed for the removal of ammonium-nitrogen from groundwater. The PRB involves a combination of oxygen release, biological nitrification, ion exchange, and bioregeneration. A pilot-scale performance comparison experiment was carried out employing three parallel columns to assess the proposed PRB. The results showed that the PRB achieved nearly complete NH4+-N depletion (>99%). NH4+-N of 5.23–10.88 mg/L was removed, and NO2−-N of
ISSN:	0301-4797 1095-8630
DOI:	10.1016/j.jenvman.2015.02.012