摘要
以高氨氮模拟废水为研究对象，对影响亚硝化-厌氧氨氧化组合工艺脱氮效果的几个因素（DO、pH、碱度、有机物浓度、NU4^＋-N／NO2^-—N值）进行了考察，以期获得组合工艺的最佳运行方式。研究结果表明，在亚硝化温度为23～26℃，HRT=1d，进水NH4^＋-N、TN浓度分别为350、420mg／L，ANH4^＋-N／ANO2^--N值为0.8～1.33的条件下，组合工艺对NH4^＋-N、TN的最高去除率分别为99．9％、90．8％，平均去除率分别为96％、76．1％。组合工艺的脱氮效率严重受限于亚硝化系统出水的NH4^＋-N／NO2^--N值及其稳定性。
The high-strength synthetic ammonia wastewater was used as the research target to separately study the affecting factors of the nitrogen removal efficiency by the combined nitrosation - ANAM- MOX process. The purpose is to find the optimal running method and optimum treatment condition. The affecting factors include DO, pH, alkalinity, organic matter concentration and NH4^＋- N/NO2^- - N ratio. The experimental results indicate that under the conditions of the temperature being 23 - 26 ℃, the hydraulic retention time being 1 day, the ammonia and total nitrogen concentrations in influent being 350 mg/L, 420 mg/L respectively, and the reaction ratio of NH4^＋ - N to NO2^- - N being 0.8 - 1.33, the maximal ammonia and total nitrogen removal rates reach 99.9% and 90.8% respectively in the combined process. The average removal rates of ammonia and total nitrogen are 96% and 76.1%. Furthermore, the nitrogen removal rate of the combined process is restrained by the NH4^＋ - N/NO2^- - N in the effluent of nitrosation and its stability.
出处
《中国给水排水》
CAS
CSCD
北大核心
2006年第15期40-43,共4页
China Water & Wastewater
基金
北京市自然科学基金资助项目(8042010)
北京市科委科技项目(H010510090113)
关键词
亚硝化
厌氧氨氧化
生物脱氮
nitrosation
anaerobic ammonia oxidation
biological nitrogen removal
