低负荷下厌氧氨氧化处理养殖废水的启动研究

厌氧氨氧化作为新型生物脱氮技术其关键在于如何实现厌氧氨氧化反应的启动,现有研究多以模拟废水为研究对象,本文以猪场废水为对象的研究,利用ASBR为反应器,接种反硝化污泥培养厌氧氨氧化细菌,在NH+4-N与NO-2-N浓度均为100 mg/L的条件下,运行125 d,经历启动初期、过渡期、系统稳定运行期三个阶段,厌氧氨氧化反应器中NH+4-N的去除率达91.70%,NO-2-N去除率92.0%;NH+4-N的容积负荷为36.90 mg/L.d,NO-2-N的容积负荷为37.55 mg/(L.d),成功实现了厌氧氨氧化反应器的启动。该研究成果对厌氧氨氧化技术在工程实践的应用具有重要的指导意义。

Study on the low load start-up of anaerobic ammonia oxidation treated with breeding wastewater

As a new biological nitrogen removal technology,the start-up of ANAMMOX reactor is very important.Most of researches focus on synthetic wastewater,there is rare report about its application in piggery wastewater.The culture of anaerobic oxidation biomass seeded with anaerobic denitrification sludge in the anaerobic sequencing batch reactor.It took 125 days that ANAMMOX reactor was started up successfully under the 100mg/L concentration of ammonia nitrogen(NH+ 4-N) and nitrite nitrogen(NO-2-N),which was departed into initial phase of start-up,transition period and steadily operative period.At the end of the reactor start-up,the removal rate of ammonia and nitrite achieved 91.7%,92.0% respectively;The volume loads of ammonia and nitrite were 36.9,37.6 mg/(L·d) respectively.The result has important guiding significance on ANAMMOX technology in engineering practice.