TREATMENT EFFICIENCY OF HETEROGENEOUS FENTON ON GROUNDWATER PUMPED FROM ORGANOPHOSPHORUS PESTICIDE CONTAMINATED SITES AND ITS INFLUENCE FACTORS

SUN Lei; CHEN Da-yang; ZHANG He-qing; YU Jin-qi; WU Zhen-jun

doi:10.13205/j.hjgc.202209012

Volume 40 Issue 9

Nov. 2022

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SUN Lei, CHEN Da-yang, ZHANG He-qing, YU Jin-qi, WU Zhen-jun. TREATMENT EFFICIENCY OF HETEROGENEOUS FENTON ON GROUNDWATER PUMPED FROM ORGANOPHOSPHORUS PESTICIDE CONTAMINATED SITES AND ITS INFLUENCE FACTORS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 89-95. doi: 10.13205/j.hjgc.202209012

Citation:

SUN Lei, CHEN Da-yang, ZHANG He-qing, YU Jin-qi, WU Zhen-jun. TREATMENT EFFICIENCY OF HETEROGENEOUS FENTON ON GROUNDWATER PUMPED FROM ORGANOPHOSPHORUS PESTICIDE CONTAMINATED SITES AND ITS INFLUENCE FACTORS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 89-95. doi: 10.13205/j.hjgc.202209012

Citation:

SUN Lei, CHEN Da-yang, ZHANG He-qing, YU Jin-qi, WU Zhen-jun. TREATMENT EFFICIENCY OF HETEROGENEOUS FENTON ON GROUNDWATER PUMPED FROM ORGANOPHOSPHORUS PESTICIDE CONTAMINATED SITES AND ITS INFLUENCE FACTORS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 89-95. doi: 10.13205/j.hjgc.202209012

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TREATMENT EFFICIENCY OF HETEROGENEOUS FENTON ON GROUNDWATER PUMPED FROM ORGANOPHOSPHORUS PESTICIDE CONTAMINATED SITES AND ITS INFLUENCE FACTORS

doi: 10.13205/j.hjgc.202209012

1. CSCEC SCIMEE Sci & Tech Co., Ltd, Chengdu 610045, China;
2. Beijing Guohuan Tsinghua Environmental Engineering Design & Research Institute Co., Ltd, Beijing 100084, China

Received Date: 2021-08-31
Available Online: 2022-11-09

Abstract

Abstract

The differences in COD, TP removal rate and sludge yield in different heterogeneous Fenton catalysts for treating high concentration organophosphorus groundwater pumped from pesticide-contaminated sites were compared, and the influences of H₂O₂ dosage, heterogeneous catalyst loading and pH on the reaction efficiency were investigated. The surface structure and composition of heterogeneous catalysts before and after the reaction were analyzed using scanning electron microscope(SEM) and X-ray energy spectrum(EDS). The results indicated that Fe₂O₃/Al₂O₃ heterogeneous catalyst had a higher specific surface area and Fe content at load, and Fe was deposited on the surface of the material after the reaction. In heterogeneous Fenton reaction with Fe₂O₃/Al₂O₃, Al₂O₃ and Fe₂O₃/SiO₂-Al₂O₃ as catalysts, the removal rates of COD and TP can reach 84.72%, 74.10%, 75.98% and 88.48%, 82.80%, 85.83%, respectively. Higher than homogeneous Fenton reaction without solid catalyst. In the range of ρ(H₂O₂)/ρ(COD)=0.5~2.0, the removal rates of COD and TP significantly increased with the increase of H₂O₂ dosage, and the removal rates of COD and TP were in direct proportion to the loading amount of heterogeneous catalysts. At the same time, the addition of heterogeneous catalyst can significantly reduce the sludge yield and expand the effective pH range of the reaction system.
- heterogeneous Fenton,
- heterogeneous catalyst,
- organophosphorus pesticide,
- reaction efficiency,
- sludge reduction

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References(33)

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