Carrousel氧化沟同步硝化反硝化的影响因素研究  

Study on the Impact Factors of Simultaneous Nitrification and Denitrification in a Carrousel Oxidation Ditch

作　　者：程飞[1] 孙根行[1] 郭昌梓[1] 毕跃勋[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《安徽农业科学》2011年第12期7381-7384,共4页Journal of Anhui Agricultural Sciences

基　　金：陕西科技大学研究生创新基金

摘　　要：[目的]为城市污水处理厂的优化脱氮和节能运行提供参考。[方法]采用有效容积为240 L的中试Carrousel氧化沟处理模拟生活污水,研究溶解氧、进水COD负荷和进水氨氮负荷对Carrousel氧化沟同步硝化反硝化的影响。[结果]综合氨氮和总氮的去除率,能够满足同步硝化反硝化的最佳溶解氧浓度为1.0 mg/L,最佳进水COD负荷为0.25 kg COD/(kgMLSS.d)。较小的进水氨氮负荷有利于同步硝化反硝化过程的进行。[结论]溶解氧是控制氧化沟内发生同步硝化反硝化过程的最关键的因素。进水COD负荷对同步硝化反硝化过程的影响主要是体现在进水COD负荷对实现较好硝化效果的限制。[Objective] The research aimed to provide reference for the nitrogen removal optimization and energy-saving operation of urban sewage plant.[Method] A pilot-scale Carrousel oxidation ditch with effective volume of 240 L was used for the simulated wastewater treatment.The influences of dissolved oxygen（DO）,COD loading of influent and ammonia loading of influent on simultaneous nitrification and denitrification（SND） in the Carrousel oxidation ditch was investigated.[Result] Considering the removal rate of ammonia nitrogen and total nitrogen,the optimum DO concentration for meeting the demands of SND was 1.0 mg/L and the the optimum COD loading of influent was 0.25 kgCOD/（kgMLSS·d）.The smaller ammonia loading of influent was conducive to SND.[Conclusion] DO is the decisive factor of SND occurring in Carrousel system.The affecting of COD loading of influent on the process of SND is mainly reflected in the limits of the achievement of good nitrification.

关 键 词：CARROUSEL氧化沟 同步硝化反硝化 溶解氧 进水COD负荷 进水氨氮负荷 

分 类 号：X171.4[环境科学与工程—环境科学]