用于去除制浆造纸厂废水总有机碳和毒性的高级氧化处理

Advanced oxidation treatment of pulp mill effluent for TOC and toxicity removals.

作者信息

Catalkaya Ebru Cokay, Kargi Fikret

机构信息

Department of Environmental Engineering, Dokuz Eylul University, Buca, Izmir, Turkey.

出版信息

J Environ Manage. 2008 May;87(3):396-404. doi: 10.1016/j.jenvman.2007.01.016. Epub 2007 Mar 23.

DOI:10.1016/j.jenvman.2007.01.016

PMID:17360100

Abstract

Pulp mill effluent was treated by different advanced oxidation processes (AOPs) consisting of UV, UV/H2O2, TiO2-assisted photo-catalysis (UV/TiO2) and UV/H2O2/TiO2 in lab-scale reactors for total organic carbon (TOC) and toxicity removals. Effects of some operating parameters such as the initial pH, oxidant and catalyst concentrations on TOC and toxicity removals were investigated. Almost every method resulted in some degree of TOC and toxicity removal from the pulp mill effluent. However, the TiO2-assisted photo-catalysis (UV/TiO2) resulted in the highest TOC and toxicity removals under alkaline conditions when compared with the other AOPs tested. Approximately, 79.6% TOC and 94% toxicity removals were obtained by the TiO2-assisted photo-catalysis (UV/TiO2) with a titanium dioxide concentration of 0.75gl(-1) at pH 11 within 60min.

摘要

在实验室规模的反应器中，采用不同的高级氧化工艺（AOPs）处理制浆厂废水，这些工艺包括紫外线（UV）、紫外线/过氧化氢（UV/H₂O₂）、二氧化钛辅助光催化（UV/TiO₂）和紫外线/过氧化氢/二氧化钛（UV/H₂O₂/TiO₂），以去除总有机碳（TOC）和毒性。研究了一些操作参数，如初始pH值、氧化剂和催化剂浓度对TOC和毒性去除的影响。几乎每种方法都能使制浆厂废水中的TOC和毒性有一定程度的去除。然而，与其他测试的AOPs相比，二氧化钛辅助光催化（UV/TiO₂）在碱性条件下对TOC和毒性的去除效果最佳。在pH值为11、二氧化钛浓度为0.75 g l⁻¹的条件下，通过二氧化钛辅助光催化（UV/TiO₂）在60分钟内可实现约79.6%的TOC去除率和94%的毒性去除率。