Fenton氧化法对制革废水中难降解四羟甲基氯化磷的去除作用

余静; 郭新超; 孙长顺; 陈宣

doi:10.13205/j.hjgc.202210007

Fenton氧化法对制革废水中难降解四羟甲基氯化磷的去除作用

doi: 10.13205/j.hjgc.202210007

余静¹,
郭新超^1, ,,
孙长顺²,
陈宣²

1. 西安建筑科技大学环境与市政工程学院陕西省环境工程重点实验室西北水资源与环境生态教育部重点实验室, 西安 710055;
2. 陕西省环境科学研究院, 西安 710061

详细信息

作者简介:
余静(1995-),女,硕士研究生,主要研究方向为废水处理理论与技术。724319507@qq.com

通讯作者:
郭新超(1970-),男,副教授,主要研究方向为废水处理理论与技术。gxc3000@163.com

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出版历程
- 收稿日期: 2022-10-10

REMOVAL OF REFRACTORY TETRAHYDROXYMETHYL PHOSPHORUS CHLORIDE IN TANNERY WASTEWATER BY FENTON OXIDATION

1. Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Environmental and Municipal Engineering Department, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Shaanxi Provincial Academy of Environmental Science, Xi'an 710061, China

摘要

摘要: 制革废水中四羟甲基氯化磷(THPC)属于有机磷,其结构稳定、难降解、对微生物具有抑制作用,传统的生化处理技术不能有效地处理此类废水。采用Fenton氧化法处理含THPC制革废水,考察H₂O₂投加量、pH、m(Fe²⁺)/m(H₂O₂)、反应时间、紫外光波长等因素对TP和COD去除效果的影响,建立了TP降解的动力学模型。结果表明:在pH=4,H₂O₂投加量为6667 mg/L,m(Fe²⁺)/m(H₂O₂)=1,反应时间为80 min时,TP和COD去除率最高,分别达到43%和83%;紫外光助(波长185 nm)Fenton体系可提高THPC的降解效果;动力学模型研究发现,H₂O₂投加量分级数(q=1.065)高于有机物的底物分级数(a=0.858),表明Fenton体系降解TP的反应速率主要受H₂O₂投加量制约。
- Fenton氧化 /
- 制革废水 /
- 有机磷 /
- 四羟甲基氯化磷 /
- 动力学模型
Abstract: Tetrahydroxymethyl phosphorus chloride (THPC) in tannery wastewater has the characteristics of stable structure and inhibition of wastewater treatment microorganisms, and the traditional biochemical treatment technologies cannot treat this kind of wastewater effectively. In this study, Fenton oxidation method was used to treat refractory organic phosphorus tetrahydroxymethyl phosphorus chloride (THPC) in tannery wastewater. The effects of H₂O₂ dosage, pH, m (Fe²⁺)/m (H₂O₂), reaction time and UV wavelength on the removal of total phosphorus and COD were investigated, and the kinetic model of total phosphorus degradation was established and analyzed. The results showed that when pH=4, H₂O₂ dosage=6667 mg/L, m (Fe²⁺)/m (H₂O₂)=1 and reaction time=80 min, the removal rates of total phosphorus and COD reached 43% and 83% respectively; it was found that UV assisted Fenton system (wavelength=185 nm) could improve the oxidation effect of THPC; the kinetic model showed that the dosage of hydrogen peroxide (q=1.065) was higher than that of organic matter (a=0.858), indicating that the reaction rate of Fenton oxidative degradation of total phosphorus was mainly controlled by the dosage of H₂O₂.
- Fenton oxidation /
- tannery wastewater /
- organic phosphorus /
- tetrahydroxymethyl phosphorus chloride /
- dynamic model

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