接种厌氧絮状污泥的厌氧氨氧化反应器的快速启动

厌氧氨氧化技术因其节能、运行费用低、不需添加有机物等优点而备受关注,但反应器启动慢是该技术面临的瓶颈问题。为了加速厌氧氨氧化反应器的启动,该研究在两个不同阶段中先后在同一UASB反应器中接种絮状污泥和添加颗粒活性炭,以含NH4+-N和NO2--N的人工配水为进水,进行连续试验,并在试验过程中调整运行参数,最终添加活性炭的絮状污泥反应器在运行85 d后成功启动厌氧氨氧化过程,总氮去除率稳定在80%-90%。结果表明在使用活性炭吸附法固定化时,反应器启动迅速,活性炭可以成为厌氧氨氧化菌的理想载体。

Quick Start-Up of an Anammox Reactor Inoculated with Anaerobic Flocculent Sludge

The process of anaerobic ammonium oxidation(Anammox) has attracted much attention for its advantages such as energy-saving,low operation cost,no need of adding organic matter,etc.However,the start-up of Anammox reactors seeded with regular anaerobic flocculent sludge takes long time.In order to shorten the start-up time,a lab scale of UASB reactor was seeded with anaerobic flocculent sludge and granular activated carbon(GAC) in two different stages and fed with synthetic wastewater containing ammonia and nitrite.Finally,the Anammox reactor was started up within 85 d,and the total nitrogen removal rate varied form 80 % to 95 %.The results show that the biological activated carbon(BAC) system can greatly improve the start-up of the Anammox reactor and GAC can be the excellent carrier for the Anammox bacteria.