污水脱氮除磷新工艺研究进展

Progress of new biological nutrient removal technologies

随着人们对污水生物脱氮除磷过程认识的不断深入,产生了一些新的处理工艺。本文重点介绍了耦合好氧-缺氧N2O分解工艺(CANDO)、同时去除含碳有机物及氮磷营养物质新工艺(BioCAST)、上流式厌氧-缺氧污泥床工艺(UAASB)、厌氧循环流化床工艺(A-CFBBR)、双循环流化床生物反应工艺(TCFBBR)、双污泥反硝化诱导结晶工艺(A2N-IC)等6种新工艺的原理、影响因素和工艺流程特点。通过与传统工艺的相比较,对新工艺的特性进行了探讨。最后展望了污水脱氮除磷技术的发展趋势,指出经济、高效、低能耗的可持续脱氮除磷工艺是污水处理未来的发展方向。

In recent years,as people’s understanding of wastewater biological nutrient removal process were improving,some new wastewater treatment technologies were generated. The mechanisms, influencing factors and process characteristics of CANDO,BioCAST,UAASB,A-CFBBE,TCFBBR, A2N-IC for nutrients removal were highlighted in this article. Comparing with traditional technology, the characteristics of the new technologise were discussed. Finally gives a prospect of biological nutrient removal technology,pointing out that the developing direction for future wastewater treatment process should be economic,efficient and low energy consumption.