结合光芬顿工艺与生物序批式反应器用于降解2,4-二氯苯酚。

Combining photo-Fenton process with biological sequencing batch reactor for 2,4-dichlorophenol degradation.

作者信息

Al Momani F, Gonzalez O, Sans C, Esplugas S

机构信息

Departament d'Enginyeria Química i Metallúrgia, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.

出版信息

Water Sci Technol. 2004;49(4):293-8.

PMID:15077986

Abstract

The effect of the photo-Fenton process on biodegradability enhancement of 100 mg x L(-1) aqueous 2,4-dichlorophenol (2,4-DCP) solution has been investigated. An initial concentration of 65 mg x L(-1) H2O2 and 10 mg x L(-1) Fe (II) during 35 minutes of irradiation time was sufficient for total 2,4-DCP removal. At these working conditions, biodegradability, measured as BODS/COD ratio, was increased from 0 for the original solution up to 0.15. Biological oxidation of photo-Fenton pre-treated solutions was performed in a sequencing batch reactor (SBR). After 32 days of start-up, the reactor was fed with different pre-treated solutions and cycle duration was reduced progressively. TOC removal efficiencies in the SBR went from 30 up to 70%.

摘要

研究了光芬顿工艺对100 mg·L⁻¹ 2,4-二氯苯酚（2,4-DCP）水溶液生物降解性增强的影响。在35分钟的辐照时间内，初始浓度为65 mg·L⁻¹ 的H₂O₂ 和10 mg·L⁻¹ 的Fe (II) 足以实现2,4-DCP的完全去除。在这些工作条件下，以BOD₅/COD比值衡量的生物降解性从原液的0提高到了0.15。光芬顿预处理溶液的生物氧化在序批式反应器（SBR）中进行。启动32天后，向反应器中加入不同的预处理溶液，循环持续时间逐渐缩短。SBR中的总有机碳（TOC）去除效率从30%提高到了70%。