摘要
以城市污水厂二沉池污泥为种泥,以悬浮填料填充床生物膜反应器为厌氧氨氧化(ANAMMOX)反应器,采用高负荷培养法和好氧预挂膜低负荷培养法分别培养与富集厌氧氨氧化菌,并研究其脱氮性能.结果表明,好氧预挂膜低负荷培养法可以在较短时间内(90 d左右)快速启动厌氧氨氧化反应器,稳定期反应器出水氨氮和亚硝氮保持稳定,去除率均接近100%,总氮去除率在75%以上,高负荷培养法因高浓度氨氮和亚硝氮的抑制作用而启动失败(190d).启动过程中pH变化表明,厌氧氨氧化反应器出水pH略高于进水,pH值可用作厌氧氨氧化反应器启动进程的指示参数.上流式厌氧填充床ANAMMOX反应器具有高负荷和高效率的优点,当反应器进水氨氮和亚硝氮浓度低于800 mg/L时,其去除率几乎达100%,低于国家一级标准.
Packed bed biofilm reactor with suspended carrier was used to cultivate ANAMMOX bacteria with sludge inoculums from WWTP secondary settler.The startup of ANAMMOX reactor was comparatively studied using high nitrogen loading method and low nitrogen loading method with aerobically biofilmed on the carrier,and the nitrogen removal characteristic was further investigated.The results showed that the reactor could be started up successfully within 90 days using low nitrogen loading method,the removal efficiencies of ammonium and nitrite were nearly 100% and the TN removal efficiencywas over 75%,however,the high nitrogen loading method was proved unsuccessfully for startup of ANAMMOX reactor probably because of the inhibition effect of high concentration of ammonium and nitrite.The pH value of effluent was slightly higher than the influent and the pH value can be used as an indicator for the process of ANAMMOX reaction.The packed bed ANAMMOX reactor with suspended carrier showed good characteristics of high nitrogen loading and high removal efficiency,100% of removal efficiency could be achieved when the influent ammonium and nitrite concentration was lower than 800 mg/L.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2010年第3期691-696,共6页
Environmental Science
基金
国家重点基础研究发展规划(973)项目(2004CB418505)
北京林业大学新教师基金项目(BLX2007013)
关键词
厌氧氨氧化
填充床
悬浮填料
启动
生物脱氮
anaerobic ammonium oxidation
packed bed
suspended carrier
startup
biological nitrogen removal
