RESEARCH PROGRESS OF IFAS PROCESS FOR WASTEWATER TREATMENT

LIU Guohua; LI Qinyu; XU Xianglong; QI Lu; WANG Hongchen

doi:10.13205/j.hjgc.202202032

Volume 40 Issue 2

Apr. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(2): 214-224

LIU Guohua, LI Qinyu, XU Xianglong, QI Lu, WANG Hongchen. RESEARCH PROGRESS OF IFAS PROCESS FOR WASTEWATER TREATMENT[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 214-224. doi: 10.13205/j.hjgc.202202032

Citation:

LIU Guohua, LI Qinyu, XU Xianglong, QI Lu, WANG Hongchen. RESEARCH PROGRESS OF IFAS PROCESS FOR WASTEWATER TREATMENT[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 214-224. doi: 10.13205/j.hjgc.202202032

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RESEARCH PROGRESS OF IFAS PROCESS FOR WASTEWATER TREATMENT

doi: 10.13205/j.hjgc.202202032

Low Carbon Water Environmental Technology Research Center, School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China

Received Date: 2020-11-16
Available Online: 2022-04-02
Publish Date: 2022-04-02

Abstract

Abstract

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.
- IFAS process,
- pollutant removal,
- process coupling,
- operation parameters,
- operation upgrading

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References(81)

References

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