摘要
低碳氮比高氨氮是猪场稳定塘废水生物脱氮时遇到的主要问题.采用固定化曝气生物滤池(IBAF)工艺处理猪场稳定塘废水,重点对碱度、DO、碳源等影响脱氮过程的因素进行了研究.结果表明,补充1.5g/L的Na2CO3可维持废水碱度使硝化反应进行完全,载体外部DO浓度为3.0mg/L时脱氮效率最高,反硝化阶段补充新鲜废水做碳源时总氮去除率为93%,可大幅度降低运行成本.本实验为解决养猪废水的脱氮问题提供了一条新途径.
Low C/N and high concentration ammonia is the main problem in the nitrogen removal of the swine lagoon wastewater. In this study, the immobilized-microorganism Biological Aerobic Fiher was used to treat swine lagoon wastewater, Factors influencing the biological nitrification and denitrification were mainly studied. When 1.5g/L Na2CO3 was added to swine lagoon wastewater, the nitrification process would react completely. The highest TN removal efficiency was reached when DO was 3.0mg/L The TN removal efficiency was 93% when the fresh rinse wastewater was used as the carbon resource in the denitrification, which could reduce the operation cost. This research provided a new way to resolve nitrogen-removal problem of the swine wastewater.
出处
《应用基础与工程科学学报》
EI
CSCD
2006年第1期10-15,共6页
Journal of Basic Science and Engineering
基金
国家863基金项目资助(2004AA649360)
关键词
养猪废水
曝气生物滤池
固定化微生物
硝化
反硝化
swine wastewater
biological aerobic filter bed
immobilized microorganism
nitrification
denitrification
