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Study on the Adsorption Property of Fly Ash Towards Pollutants in Papermaking Wastewater
Received:November 02, 2022  
DOI：10.11980/j.issn.0254-508X.2023.01.010
Key Words:fly ash  papermaking wastewater  adsorption  pollutant
Fund Project:2021年度河南省高等教育教学改革研究与实践立项项目“多模态数据驱动下的高职教学改革实践与支持机制研究”（课题编号2021SJGLX865）。
Author NameAffiliationPostcode
WEI Yahui* Zhumadian Vocational and Teachnical College, Zhumadian, He’nan Province, 463000 463000
LI Shaozi* Xiamen University, Xiamen, Fujian Province, 361005 361005
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Abstract:In this study， fly ash inorganic material （FAH） was prepared by heat treatment. The effects of different particle sizes， adsorption time and pH value on oxygen demand （COD） removal and competition adsorption with heavy metal ions were studied. The results showed when the particle size was less than 0.212 mm， the CODCr maximum removal rate was 92.6% at pH value=8 for 240 min. It also had good removal effect on BOD， SS and chroma. When pH value=6， FAH with particle size less than 0.212 mm had the highest removal rates of Cu2+， Zn2+， Pb2+， Cd2+ of 95.9%， 85.3%， 79.3 and 82.2%， respectively.When the particle size was less than 0.212 mm， FAH had a good removal effect on COD， Cd2+， Zn2+， Pb2+ and Cu2+.
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