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Advanced Treatment of Papermaking Wastewater by Ozonation and Process Optimization
Received:July 31, 2020  
DOI：10.11980/j.issn.0254-508X.2020.10.006
Key Words:papermaking wastewater  ozonation  catalysts  process optimization
Author NameAffiliationPostcode
JIAO Dong School of Light Industry and Chemical Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
WU Shubin School of Light Industry and Chemical Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
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Abstract:In order to solve the problem that biochemical effluent from papermaking wastewater could hardly reach the requirement of discharge standard， single factor experiment was used to study the advanced treatment effect by ozone oxidation. The results showed that using nano copper oxide as the catalyst for papermaking wastewater ozonation， when the generation of ozone was 3 g/L， dosage of catalyst was 0.25‰， temperature was 30℃， reaction time was 30 min， the CODCr removal rate of papermaking wastewater was over 95%. Wastewater quality could meet the requirement of GB 3544—2008 Discharge Standard of Water Pollutants for Pulp and Paper Industry.
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