文 献 综 述

污水处理中氧化沟工艺的研究进展

摘要：简要介绍了氧化沟工艺的发展历程，总结了氧化沟工艺向着增加厌氧区和缺氧 区，将曝气和推流功能分离以及优化溶解氧浓度等运行参数实现同步硝化反硝化(SND)和同步硝化反硝化除磷(SNDPR)等方向发展的趋势。但是，在氧化沟工艺的研究应用过程中，循环比对氧化沟内混合液流态、溶解氧扩散传质和微生物种群分布等方面的影响研究鲜有报道。因此，明确循环比与氧化沟脱氮除磷作用机制之间的响应关系，以便进一步提高氧化沟工艺的脱氮除磷效率，为其设计、改造、运行提供科学依据和理论指导。

关键词：污水处理、氧化沟、脱氮、除磷

Abstract: The development course of oxidation ditch is introduced briefly. Moreover,the development trends of increasing anaerobic and anoxic zones,separating aeration from plug-flow function, optimizing the operation parameters,such as dissolved oxygen concentration etc. and achieving simultaneous nitrification and denitrification(SND),and simultaneous nitrification and denitrification phosphorus removal(SNDPR) ,are summarized. However, in the research and application process of oxidation ditch technology, the influence of circulation ratio on mixed liquid flow pattern, dissolved oxygen diffusion and mass transfer and microbial population distribution in oxidation ditch is rarely reported. Therefore, the response relationship between cycle ratio and the mechanism of oxidation ditch nitrogen and phosphorus removal should be clarified.The researches can further improve the denitrification and dephosphorization efficiencies of oxygen ditch process and provide scientific base and theoretical guide for its design,modification and operation.

Key words: Sewage treatment ;oxidation ditch ; denitrification ; dephosphorization

一、 前言

近年来由于城市、工业等方面发展速度加快，城 容，进行了简要的分析和阐述，希望对其环境质量的提升，给予一定程度上的帮助。