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Advanced Treatment of Bio-treated Wastewater with Combined H2O2/O3-BAF Process
Received:April 04, 2023  
DOI：10.11980/j.issn.0254-508X.2023.11.012
Key Words:H2O2/O3 oxidation  biologicalaeratedfilter  bio-treated wastewater of papermaking  reuse
Fund Project:江苏省大学生创业实践项目（201713842006Y）；江苏省大学生创业训练项目（202013842006Y）。
Author NameAffiliationPostcode
TANG Guomin* Taizhou Institute of Science and Technology， Nanjing University of Science and Technology， Taizhou， Jiangsu Province， 225300 225300
LI Liangyu Taizhou Institute of Science and Technology， Nanjing University of Science and Technology， Taizhou， Jiangsu Province， 225300 225300
SONG Jingjing Taizhou Institute of Science and Technology， Nanjing University of Science and Technology， Taizhou， Jiangsu Province， 225300 225300
WU Ming Jiangsu Kangtai Environmental Protection Co.， Ltd.， Taizhou， Jiangsu Province， 225300 225300
ZHOU Shunlong Jiangsu Kangtai Environmental Protection Co.， Ltd.， Taizhou， Jiangsu Province， 225300 225300
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Abstract:Combined H2O2/O3-biologicalaeratedfilter process （H2O2/O3-BAF） was used for advanced treatment of bio-treated wastewater of papermaking （BWPM） to obtain reusable wastewater， and optimum operational conditions were examined by experiment， meanwhile performance of the combined process also was explored. It was found that optimum operational conditions were pH value=7.3~8.4， H2O2/O3 dosage=113/60 mg/mg， oxidation time=25 min， hydraulic retemtion time （HRT） in BAF=2.5 h， volume rate of air/water in BAF=3∶1. Under the optimum operational condition， bio-treatment suitability of BWPM could be significantly enhanced by H2O2/O3 oxidation， CODCr and color in BWPM after H2O2/O3-BAF treatment were always less than 20 mg/L and 10 time， respectively， which met the wastewater requirement in paper mill.
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