Research progress on the removal of humic acids from water by oxidation and its derived hybrid processes

doi:10.16085/j.issn.1000-6613.2020-2588

Abstract

Abstract:

Humic acid natural organic matter in water is an important factor affecting water quality, and it is difficult to remove humic substances from water by conventional process. Due to its high efficiency, low energy consumption and wide application range, oxidation and its combined technologies have gradually become pretreatment technologies for removing such pollutants. Ozone, potassium permanganate and other oxidants with strong oxidizing characteristics have replaced the traditional oxidant - chlorine, which can effectively decompose NOM into non-toxic small molecules, reduce the risk of mutagenesis of drinking water quality. Among oxidation technologies, ozone is advantageous in terms of safety and side effects, but the single oxidation technology has different degrees of limitations. According to different water conditions at home and abroad, the oxidation mechanism, synergistic effect, removal effect and application status of oxidation technology-coagulation process and other combined technologies to remove humic acid in water were compared in detail, and the research progress of different oxidation and its combined technologies to remove NOM in water was discussed. The analyses showed that oxidation technology combined processes have become the mainstream process to remove humic acid in water, and point out that the pre-oxidation-membrane combined technology has a wide application prospect because of its good synergistic property.

Key words: oxidation technology, humic acids, drinking water, combined technologies

摘要：

水体中的腐殖酸类天然有机物是影响水质重要因素之一，仅靠常规工艺难以去除水中腐殖质。氧化及其联用技术因效率高、能耗低、适用范围广，逐步成为去除此类污染物的预处理技术，臭氧、高锰酸钾等氧化剂具有较强氧化性的特点，已取代传统氧化剂-氯气，能有效将水中天然有机物（natural organic matter，NOM）分解为无毒小分子物质，且降低了饮用水水质致突变风险，其中，臭氧在安全性和副作用方面更具优势，但单一氧化技术存在不同程度的局限性。针对国内外不同水体状况，本文详细比较了氧化-混凝等联用技术去除水中腐殖酸的氧化机理、协同作用、去除效果和应用状况，探讨了不同的氧化及其联用技术去除水中NOM的研究进展情况，分析表明氧化技术组合工艺已成为去除水中腐殖酸的主流工艺，并指出预氧化-膜联用技术因其良好的协同性而具有广泛的应用前景。

关键词: 氧化技术, 腐殖酸, 饮用水, 联用工艺

CLC Number:

TANG Anzhong, XU Qike. Research progress on the removal of humic acids from water by oxidation and its derived hybrid processes[J]. Chemical Industry and Engineering Progress, 2021, 40(12): 6889-6896.

唐安中, 徐琪珂. 氧化及其联用技术去除水中腐殖酸研究进展[J]. 化工进展, 2021, 40(12): 6889-6896.

Figures/Tables 6

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水源	预氧化剂	处理效果	参考文献
阿利阿克蒙河河水	O₃	DOC、UV₂₅₄、有机物的去除率分别为10%~31%、44%~82%、70%~80%	［11］
微污染地表水	O₃	UV₂₅₄的去除率为13.4%	［12］
实验室合成水	O₃	DOC、UV₂₅₄、THMFP的去除率分别为42%、95%、89%	［13］
太湖湖水	O₃	络氨酸类蛋白有机物、色氨酸类蛋白有机物、紫外富里酸类物质的去除率分别为72.1%、69.9%、100%	［14］

水源	预氧化剂	处理效果	参考文献
阿利阿克蒙河河水	O₃	DOC、UV₂₅₄、有机物的去除率分别为10%~31%、44%~82%、70%~80%	［11］
微污染地表水	O₃	UV₂₅₄的去除率为13.4%	［12］
实验室合成水	O₃	DOC、UV₂₅₄、THMFP的去除率分别为42%、95%、89%	［13］
太湖湖水	O₃	络氨酸类蛋白有机物、色氨酸类蛋白有机物、紫外富里酸类物质的去除率分别为72.1%、69.9%、100%	［14］

水源	预氧化剂	处理效果	参考文献
克罗地亚东部地区地下水	Fe²⁺/H₂O₂	THMFP的去除率可达70%	［22］
佛罗里达国家森林公园湖水	UV/H₂O₂	DOC、UV₂₅₄去除率分别为79%~97%、42%~82%	［23］
俄罗斯Mir矿	H₂O₂	HA降解率高于40%	［24］
实验室合成水	H₂O₂	TOC、Na₂C₂O₄去除率均高于45%	［25］

水源	预氧化剂	处理效果	参考文献
克罗地亚东部地区地下水	Fe²⁺/H₂O₂	THMFP的去除率可达70%	［22］
佛罗里达国家森林公园湖水	UV/H₂O₂	DOC、UV₂₅₄去除率分别为79%~97%、42%~82%	［23］
俄罗斯Mir矿	H₂O₂	HA降解率高于40%	［24］
实验室合成水	H₂O₂	TOC、Na₂C₂O₄去除率均高于45%	［25］

水源	预氧化剂	处理效果	参考文献
微污染地表水	KMnO₄	DOC、UV₂₅₄的去除率分别为 17.5%、13.4%	［12］
东太湖、西太湖湖水	KMnO₄	西太湖和东太湖湖水的UV₂₅₄去除率分别为 10.46%、6.56%	［29］
萨瓦尼河河水	K₂FeO₄	最高DOC去除率为 28%	［30］
帕赛克河河水	K₂FeO₄	DOC、UV₂₅₄去除率分别为 26%、85%	［32］