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Ultrasonic/Ultraviolet Enhanced Fenton for Advanced Treatment of Papermaking Wastewater
Received:July 05, 2022  
DOI：10.11980/j.issn.0254-508X.2022.09.013
Key Words:ultrasonic  ultraviolet  Fenton  papermaking wastewater  advanced treatment  synergistic effect
Fund Project:四川省水利厅科研项目《改性田螺壳生物炭对水中三氯生（TCS）的吸附性能及机理研究》（编号：SKY2019-05）。
Author NameAffiliationPostcode
JI Dingyu* Sichuan Water Conservancy Vocational and Technical College， Chongzhou， Sichuan Province， 611231 611231
JIN Qiuye* Southwest Jiaotong University， Chengdu， Sichuan Province， 610000 610000
ZHENG Kaili Sichuan Water Conservancy Vocational and Technical College， Chongzhou， Sichuan Province， 611231 611231
CHEN Junyu Sichuan Tuopu Environmental Protection Technology Co.， Ltd.， Chengdu， Sichuan Province， 610041 610041
HUANG Dong Sichuan Water Conservancy Vocational and Technical College， Chongzhou， Sichuan Province， 611231 611231
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Abstract:In this study， ultrasonic/ultraviolet enhanced Fenton method was used for advanced treatment of papermaking wastewater. With the COD and BOD removal rates as evaluation index， the effects of reaction time， ultrasonic power and frequency， ultraviolet intensity， dosage of H2O2 and FeSO4·7H2O， and pH value on the treatment effect were studied. The result showed that the optimal treatment conditions of ultrasonic/ultraviolet enhanced Fenton method for advanced treatment of papermaking wastewater were as follows： reaction time 90 min， ultrasonic power 160 W， ultrasonic frequency 50 kHz， ultraviolet intensity 12 mW/cm2， dosage of H2O2 12 mL/L， FeSO4·7H2O 500 mg/L， and pH value 5. Under the optimal treatment conditions， the CODCr and BOD5 removal rates of papermaking wastewater were 74.8% and 75.5%， respectively. The ultrasonic/ultraviolet enhanced Fenton method had a synergistic effect on the advanced treatment of papermaking wastewater and its treatment effect was better than that of the combination of ultrasonic+ultraviolet+Fenton method. After the advanced treatment by ultrasonic ultraviolet enhanced Fenton method， the papermaking wastewater meets the class A standard of GB18918—2002 “Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant”.
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