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Effect of Magnetic Fe3O4Nanoparticles on Micro-aerobic Activated Sludge Domestication with Pulping Middle-stage Effluent
  
DOI：10.11980/j.issn.0254-508X.2018.07.008
Key Words:magnetic nanoparticles  micro-aerobic  activated sludge  pulping middle-stage effluent
Fund Project:广东省教育厅自然科学项目（2015KTSCX140）。
Author NameAffiliation
WANG Yue-ting School of Environment and Civil Engineering， Dongguan University of Technology， Dongguan，Guangdong Province，523808 
LAN Shan-hong* School of Environment and Civil Engineering， Dongguan University of Technology， Dongguan，Guangdong Province，523808 
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Abstract:Effect of magnetic Fe3O4 nanoparticles on micro-aerobic activated sludge domestication with pulping middle-stage effluent was studied. The magnetic Fe3O4 nanoparticles were prepared by co-precipitation method and characterized by SEM. The effect of Fe3O4 nanoparticles dosage on activated sludge domestication with pulping middle-stage effluent under micro-aerobic conditions was investigated through static experiments. The results showed that the treatment effect and the physical-chemical characters of the sludge with the addition of Fe3O4 nanoparticles were better than that of without adding Fe3O4 nanoparticles. CODCr removal efficiency reached about 80% for 55d domestication when Fe3O4 nanoparticle dosage was 1.0 g/L， while no higher than 70% achieved in the control sample. MLSS， settling and flocculating performances of the sludge were obviously superior to the control group．
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