化学处理对纺织废水中可溶性残余化学需氧量的影响。

Effect of chemical treatment on soluble residual COD in textile wastewaters.

作者信息

Dulkadiroglu H, Dogruel S, Okutman D, Kabdaşli I, Sözen S, Orhon D

机构信息

Environmental Engineering Department, Istanbul Technical University, ITU Inşaat Fakültesi, Ayazağa Kampüsü, 80626 Maslak, Istanbul, Turkey.

出版信息

Water Sci Technol. 2002;45(12):251-9.

PMID:12201110

Abstract

The effect of chemical treatment on the magnitude of soluble residual COD in the biological treatment effluent is investigated for knit fabric finishing wastewater. Bentonite is selected for its potential to remove soluble COD together with color and particulate components. Chemical treatment using bentonite, when applied prior to biological treatment removes around 40% of the biodegradable as well as soluble inert COD initially present in the wastewater. As a chemical post-treatment, it acts as a polishing step, removing particulate matter and a minor portion of around 20% of the remaining soluble COD. These findings suggest chemical pre-treatment as a better alternative for the optimization of soluble COD removal.

摘要

针对针织面料整理废水，研究了化学处理对生物处理出水可溶性残余化学需氧量（COD）量的影响。选择膨润土是因为它有去除可溶性COD以及颜色和颗粒成分的潜力。在生物处理之前使用膨润土进行化学处理，可去除废水中最初存在的约40%的可生物降解以及可溶性惰性COD。作为化学后处理，它起到抛光步骤的作用，去除颗粒物质和约20%的剩余可溶性COD的一小部分。这些发现表明化学预处理是优化可溶性COD去除的更好选择。