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本论文阐述了二氧化氯漂白废水中氯代化合物产生的根源、种类及环境危害。论述了现有二级生物处理和高级氧化技术对氯代化合物的非针对性及局限性。重点介绍了利用纳米零价铁及其改性物实现氯代化合物,尤其是氯代芳香族组分的高效还原脱氯,降解为低氯甚至无氯产品。论文还探讨了造纸白水中细小纤维作为催化剂绿色水凝胶载体的可行性。
This paper describes the origin, types and environmental hazards of chlorine compounds in chlorine dioxide bleaching wastewater. The non-pertinence and limitations of the existing secondary biological treatment and advanced oxidation techniques on chlorinated compounds were discussed. The introduction of the use of zero-valent iron and nano-modified iron compounds to achieve chlorine compounds, especially the efficient reduction of chlorinated aromatic components dechlorination, degradation of low chlorine or even chlorine-free products. The paper also discusses the feasibility of using finer fibers in papermaking white water as catalyst for green hydrogel carrier.