化学氧化法修复TPH污染土壤的效果比较及工艺研究

缪周伟

doi:10.13205/j.hjgc.202005029

化学氧化法修复TPH污染土壤的效果比较及工艺研究

doi: 10.13205/j.hjgc.202005029

缪周伟

上海市城市建设设计研究总院(集团)有限公司, 上海 200125

详细信息

作者简介:
缪周伟,博士。miaozhouwei@sucdri.com

计量
- 文章访问数: 181
- HTML全文浏览量: 16
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2020-04-01

EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION

MIAO Zhou-wei

Shanghai Urban Construction Design & Research Institute(Group) Co., Ltd, Shanghai 200125, China

摘要

摘要: 以TPH污染土壤为研究对象,研究了不同化学氧化体系对TPH污染土壤的修复效果及影响因素。研究表明:Fenton、类Fenton及碱活化过硫酸盐3个体系都对TPH污染土壤有较好的修复效果。柠檬酸的加入改善了Fenton体系的催化作用,类Fenton体系降解效果最佳。TPH在类Fenton及碱活化过硫酸盐体系中的降解符合准一级反应动力学,提高H₂O₂、柠檬酸和过硫酸盐的浓度均有利于TPH的降解。强化混合、分次投加氧化剂及减小土壤粒径均可以提高TPH的降解效率,节约氧化剂用量。类Fenton体系中有效成分主要为·OH,碱活化过硫酸盐体系中除了·OH外,还存在SO₄^-·或O₂^-·等的作用,因此氧化剂利用率较高。
- 总石油烃(TPH) /
- 土壤修复 /
- 氧化 /
- 影响因素 /
- 机理
Abstract: In this study, the remediation effect of several chemical oxidation systems on TPH-contaminated soils were evaluated, and some impact factors were studied as well. The results showed that Fenton, Fenton-like and alkali-activated persulfate systems showed good TPH remediation performance. Since the addition of citric acid significantly improved the catalytic activity of Fenton system, the Fenton-like system showed the best TPH degradation performance. The TPH degradation in Fenton-like and alkali-activated persulfate systems followed the pseudo-first-order kinetics. Increasing the concentration of hydrogen peroxide, citric acid and persulfate could enhance the degradation of TPH. It was proved that intensifying mixing, adopting sequential addition of oxidants and reducing soil particle size could obviously improve the degradation effect of TPH with lower amount of oxidants. Moreover, the experimental results confirmed that the main active free radical in Fenton-like system was ·OH, while in the alkali-activated persulfate system, besides ·OH, the presence of SO₄^-· or O₂^-·, and other presenting free radicals also made greater advantage of the oxidants.
- total petroleum hydrocarbon (TPH) /
- soil remediation /
- oxidation /
- impact factors /
- mechanism

HTML全文

参考文献(19)

刘五星, 骆永明, 滕应, 等. 我国部分油田土壤及油泥的石油污染初步研究[J]. 土壤, 2007, 39(2):247-251.

LIANG C J, BRUELL C J, MARLEY M C, et al. Persulfate oxidation for in situ remediation of TCE. Ⅱ. Activated by chelated ferrous ion[J]. Chemosphere, 2004, 55(9):1225-1234.

GARRIDO-RAMÍREZ E G, THENG B K G, MORA M L. Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions: a review[J]. Applied Clay Science, 2010, 47(3/4): 182-192.

RASTOGI A, AL-ABED S R, DIONYSIOU D D. Effect of inorganic, synthetic and naturally occurring chelating agents on Fe(Ⅱ) mediated advanced oxidation of chlorophenols[J]. Water Research, 2009, 43(3): 684-694.

TSITONAKI A, PETRI B, CRIMI M, et al. In situ chemical oxidation of contaminated soil and groundwater using persulfate: a review[J]. Critical Reviews in Environmental Science and Technology, 2010, 40(1): 55-91.

LIANG C, SU H W. Identification of sulfate and hydroxyl radicals in thermally activated persulfate[J]. Industrial & Engineering Chemistry Research, 2009, 48(11): 5558-5562.

吴昊, 孙丽娜, 王辉, 等.CaO₂/Fe²⁺活化过硫酸钠对石油类污染土壤的修复效果[J].环境化学, 2016, 35(4):623-628.

徐金兰, 宋少花, 黄廷林, 等. 柠檬酸改性Fenton氧化石油污染土壤的影响因素研究[J]. 西安建筑科技大学学报(自然科学版), 2015, 47(4):605-608.

张译之, 贾汉忠, 汪立今. Fe²⁺活化过硫酸盐在石油污染土壤中修复实验研究[J]. 岩石矿物学杂志, 2017, 36(6):881-886.

江闯, 赵宁华, 魏宏斌, 等. 类芬顿氧化法处理TPH污染土壤的试验研究[J]. 中国给水排水, 2018, 34(3): 97-99.

徐开泰, 林匡飞, 陆强, 等. 热活化过硫酸钠降解土壤体系中的菲[J]. 环境工程, 2018, 36(1):188-194.

陈玉, 任文会, 文国涛, 等. 化学氧化修复二甲四氯污染土壤研究[J]. 环境工程, 2016,34(增刊1):1008-1011.

朱杰, 罗启仕, 郭琳, 等. 碱热活化过硫酸盐氧化水中氯苯的试验[J]. 环境化学, 2013,32(12):2256-2262.

杨玲引, 宜慧, 常波,等. 柠檬酸改性Fenton氧化技术对陕北石油污染土壤的修复影响研究[J]. 应用化工, 2017,46(6):1118-1121.

吴昊, 孙丽娜, 李玉双,等. 活化过硫酸钠去除长期污染土壤中的TPH[J]. 环境工程学报, 2016, 10(9):5231-5237.

LIANG C. Identification of active radical species in alkaline persulfate oxidation[J]. Water Environment Research, 2015, 87(7):656-659.

辛磊. 逐级Fenton化学氧化重度石油污染土壤的实验研究[D]. 西安:西安建筑科技大学, 2012.

FANG G D, DIONYSIOU D, ZHOU D M. Transformation of polychlorinated biphenyls by persulfate at ambient temperature[J]. Chemosphere, 2013, 90(5): 1573-1580.

FURMAN O S, TEEL A L, WATTS R J. Mechanism of base activation of persulfate[J]. Environmental Science and Technology, 2010, 44(16): 6423-6428.

施引文献

资源附件(0)

访问统计