限氧连续曝气快速启动亚硝化-厌氧氨氧化工艺  

Quick Start of Nitrosification and Anaerobic Ammonium Oxidation Process with Oxygen-Limited Continuous Aeration

作　　者：兰兰 赵剑强[1] 丁晓倩[1] 王莎 刘双 LAN Lan;ZHAO Jianqiang;DING Xiaoqian;WANG Sha;LIU Shuang(School of Environmental Science and Engineering,Chang′an University,Xi′an 710064,China)

机构地区：[1]长安大学环境科学与工程学院,陕西西安710064

出　　处：《水处理技术》2019年第5期85-88,93,共5页Technology of Water Treatment

基　　金：国家自然科学基金(51778057)

摘　　要：实验探究了厌氧氨氧化在连续流生物膜反应器中的启动过程。结果表明,接种某污水处理厂好氧池普通混合污泥,在温度(32.0±1)℃、pH为7.2～8、完全自养条件下,通过连续曝气将溶解氧(DO)的质量浓度维持在1.5～2mg/L,经过约25 d驯化,实现了适合厌氧氨氧化的部分亚硝化。逐步将进水NH_4^+-N的质量浓度提高至500 mg/L,DO的质量浓度控制在2 mg/L左右,仍采用连续曝气,经过约40 d的驯化培养后,成功实现了氧化氨氧化细菌的富集,TN去除率可达40%以上。在反应器运行125 d后,进水TN的质量浓度为125 mg/L条件下,DO的质量浓度控制在1 mg/L左右,TN去除率可稳定在70%以上,最高可达84%,此时,进水体积流量为0.75 L/h,TN最高去除负荷为1.89 g/(L·d)。The starting process of anaerobic ammonium oxidation in continuous flow biofilm reactor was researched, the results showed that, after 25 d acclimation, a stable partial nitrification for anaerobic ammonia oxidation(Anammox) was achieved with seeded of common mixed sludge in the aerobic tank plant of a wastewater treatment plant, and with the continuous aeration at the mass concentration of DO was 1.5~2 mg/L, under the condition of completely autotrophy, temperature and pH was(32.0±1)℃ and pH of 7.2~8 respectively. Anammox bacteria enrichment was achieved at the mass concentration of DO was 2 mg/L and the influent mass concentration of NH4^+-N was 500 mg/L after about 40 d, the TN removal rate reached more than 40%. After reactor operation of 125 d, removal rate of TN could reach more than 70%, and the maximum was up to 84% at the mass concentration of DO was 1 mg/L and the influent mass concentration of NH4+-N was 125 mg/L. The influent volume flow rate was 0.75 L/h, and the highest TN removal load was 1.89 g/(L·d).

关 键 词：连续流 生物膜 连续曝气 亚硝化 厌氧氨氧化 启动 

分 类 号：X703.1[环境科学与工程—环境工程]