化肥工业废水生物脱氮技术的研究进展

Research Progress on Biological Denitrogenation Technology of Fertilizer Industrial Wastewater

氨氮废水治理是我国化肥工业可持续发展的一个工作重点。生物脱氮法处理氨氮废水具有成本低、不产生二次污染的优势,已广泛用于实际生产中。对生物脱氮技术的理论基础进行了分析,对A/O、SBR等传统生物脱氮工艺和短程硝化反硝化、同时硝化反硝化、厌氧氨氧化、O/A/O等新型生物脱氮工艺进行了综述。其中,O/A/O工艺对处理氨氮含量高、水量波动大等化肥工业废水具有很好的效果,具有广泛的推广应用价值。

The treatment of wastewater containing ammonia nitrogen is one of the emphases on the sustain- able development of fertilizer industry. The biological denitrogenation technology is widely applied in practice because of its low cost and no secondary pollution. The fundamentals of the biological denitrogenation technolo- gy are analyzed. The traditional biological denitrogenation processes such as A/O and SBR, and the new type biological denitrogenation processes such as short cut nitrification and denitrification, simultaneous nitrification and denitrification,anaerobic ammonium oxidation, O/A/O, etc. , are reviewed. The O/A/O process has good effect on fertilizer industrial wastewater with high content of NH4^＋-N and high fluctuation in flow,which has a value for wide applications.