摘要
Ammonia is the major pollutant in many industrial and agricultural wastewaters,while with an increasing demand for nitrogen fertilizer worldwide,recovery of ammonia from high concentration ammonium wastewater is a significant way to reduce environmental pollution and to meet the development requirements.The present work was to investigate the factors following pH value,molar ratio of chemical reagents to afford theoretical support for wastewater treatment and resource recycling.Precipitate of struvite was analyzed by X-ray diffraction(XRD).Results indicated that by formation of magnesium ammoniumphosphate,ammonium in steel wastewater could be removed under the conditions following pH 10,with molar ratio of PO43-∶NH4+∶Mg2+ 1.3∶1∶1.2,and the ammonium removal efficiency was up to 95%.
Ammonia is the major pollutant in many industrial and agricultural wastewaters,while with an increasing demand for nitrogen fertilizer worldwide,recovery of ammonia from high concentration ammonium wastewater is a significant way to reduce environmental pollution and to meet the development requirements.The present work was to investigate the factors following pH value,molar ratio of chemical reagents to afford theoretical support for wastewater treatment and resource recycling.Precipitate of struvite was analyzed by X-ray diffraction(XRD).Results indicated that by formation of magnesium ammoniumphosphate,ammonium in steel wastewater could be removed under the conditions following pH 10,with molar ratio of PO43-∶NH4+∶Mg2+ 1.3∶1∶1.2,and the ammonium removal efficiency was up to 95%.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2010年第S1期686-689,共4页
Chemical Industry and Engineering Progress
基金
supported by the National High Technology Research and Development Program of China(2008AA031202)
Major Science&Technology of Chongqing(CSTC2009AB4162)
Major National S&TProgram(2008ZX07315-003)
Natural Science Foundation of China(20806095)
China Postdoctor Foundation(20080430747)
