摘要
为实现以厌氧/好氧方式处理生活污水常低温同时脱氮除磷好氧颗粒污泥(AGS)工艺的实时控制,研究了冬季低温条件下磷负荷变化对系统同时脱氮除磷的影响及DO、pH值和ORP的变化规律;并通过静态实验研究了同时脱氮除磷AGS中聚磷菌(PAO)的组成.结果表明,DO、pH值和ORP的特征点对应反硝化结束、厌氧放磷结束、吸磷结束以及硝化结束等阶段,可以作为AGS同时脱氮除磷的实时控制参数.同时脱氮除磷AGS中,以氧作为电子受体的PAO能够去除总磷酸盐的14.19%;以氧和NO3--N作为电子受体的PAO能够去除总磷酸盐的74.32%;以氧、NO3--N和NO2--N作为电子受体的PAO能够去除总磷酸盐的11.47%.在好氧条件下AGS可以实现同时硝化、反硝化、好氧吸磷和反硝化吸磷.
In order to achieve real time control of simultaneously nitrogen and phosphorus removal from domestic wastewater by aerobic granular sludge in anaerobic/aerobic SBR,phosphorus shock loading experiments under low temperature and phosphate uptake batch experiments were carried out.The characteristic points of DO,pH value and ORP profiles were parameters for real time control of anoxic denitrification,anaerobic phosphate release,phosphate uptake and nitrification.It is well known that there are three kinds of phosphorus removal bacteria,they can use oxygen,both oxygen and nitrate,as well as all the oxygen,nitrate and nitrite as electron acceptors,respectively.In this work,the ratio of the three kinds of phosphorus removal bacteria to total phosphorus removal population was found to be 14.19%,74.32% and 11.47%,respectively.Simultaneously nitrification,denitrification,aerobic phosphate uptake and anoxic phosphate uptake could occur in aerobic granular sludge under aerobic condition.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2010年第2期180-185,共6页
China Environmental Science
基金
国家自然科学基金资助项目(50508001)
北京市自然科学基金资助项目(8082007)
北京市科技新星计划项目A类(2006A10)
关键词
好氧颗粒污泥
同时脱氮除磷
实时控制
aerobic granular sludge
simultaneous nitrogen and phosphorus removal
real time control
