利用垃圾渗滤液富集培养氨氧化菌

确保活性污泥中适当的氨氧化菌(AOB)的数量及活性对污水生物除氮过程至关重要，投加富集AOB是增加活性污泥中AOB浓度的方法之一. 为了经济有效地获取富集的AOB并有效处理难降解的垃圾渗滤液，对利用垃圾渗滤液富集培养AOB的可行性进行了研究. 采用烟台市生活垃圾填埋场的垃圾渗滤液作为培养基，利用辛安河污水处理厂A2/O工艺二沉池的回流污泥进行接种，通过更代方式富集培养AOB. 结果显示:更代4次后，菌液中AOB的浓度增至原来的5.6倍；向活性污泥中投加14.5%的经过4次更代富集培养的AOB，氨氧化速率提高了65.4%，从而验证了利用垃圾渗滤液富集AOB是可行的. 

Landfill Leachate as Enrichment Culture for Ammonia-Oxidizing Bacteria

Maintaining a certain amount of active ammonia-oxidizing bacteria(AOB) in activated sludge is essential for the biological nitrogen removal process.The addition of enriched AOB into activated sludge is an effective option to increase AOB population.To economically get enriched AOB and effectively treat landfill leachate,the feasibility of using landfill leachate as a culture for enriching AOB was examined.Leachate from the Yantai municipal landfill site was used as the culture,and returned sludge from the Xin’an River municipal sewage treatment plant A2 /O process was used as seed sludge.The AOB were enriched by fed batch cultivation.The results showed that after four cultivation cycles,the population of cells in the enriched AOB was 5.6 times higher than the original activated sludge.By adding 14.5% of enriched AOB after four cultivation cycles into the activated sludge,the ammonia oxidation rate increased by 65.4%,which confirmed that landfill leachate could be used as a culture for enriching AOB.