IFAS污水处理工艺的研究进展

总结了固定生物膜-活性污泥(IFAS)工艺的相关研究进展,主要包括IFAS工艺对污染物的去除性能、与其他技术耦合后的工艺性能、关键运行参数的影响,以及动力学模拟对IFAS工艺运行过程的优化.和传统活性污泥法(CAS)比较,IFAS工艺结合悬浮污泥与附着生物膜二者的优势,对有机物和氮素等污染物表现出更好的去除效果.IFA...

RESEARCH PROGRESS OF IFAS PROCESS FOR WASTEWATER TREATMENT

This paper summarized the relevant progress of fixed biofilm-activated sludge(IFAS) process, mainly including pollutant removal performance of single process and coupling with other processes, influence of operating parameters on the process,and the simulation and optimization of the process by dynamic modeling. Compared with the traditional activated sludge(CAS) process, the IFAS process combined the advantages of suspended sludge and attached biofilm, and showed higher removal performance on organic matter, nitrogen and other pollutants. The coupling of IFAS process and other new wastewater treatment processes improved the metabolic activity, diversity and selectivity of functional bacteria. In terms of operation shock resistance, the IFAS process not only exhibited high stability as C/N changes, but also had a high degree of adaptability under low temperature and high ammonia nitrogen concentration. In the optimization of the process, kinetic modeling allowed optimizing the operation parameters through simulating the interaction between sludge and biofilm. The IFAS process advantages in the performances of high pollutant removal and stability would be an alternative technology approach to the operation upgrading of wastewater treatment plants(WWTPs) in China. The performance improvement of IFAS process should be focused on the subsequent studies such as development of high-performance carriers, balance of biofilm formation and detachment, interaction between suspended sludge and biofilm, as well as the microbial characteristics.