COMPREHENSIVE EVALUATION OF AEROBIC SLUDGE GRANULATION PROCESS BASED ON FUZZY MATHEMATICS METHOD

SHI Nian; SU Kuizu

doi:10.13205/j.hjgc.202206021

Volume 40 Issue 6

Sep. 2022

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SHI Nian, SU Kuizu. COMPREHENSIVE EVALUATION OF AEROBIC SLUDGE GRANULATION PROCESS BASED ON FUZZY MATHEMATICS METHOD[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(6): 162-170,181. doi: 10.13205/j.hjgc.202206021

Citation:

SHI Nian, SU Kuizu. COMPREHENSIVE EVALUATION OF AEROBIC SLUDGE GRANULATION PROCESS BASED ON FUZZY MATHEMATICS METHOD[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(6): 162-170,181. doi: 10.13205/j.hjgc.202206021

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COMPREHENSIVE EVALUATION OF AEROBIC SLUDGE GRANULATION PROCESS BASED ON FUZZY MATHEMATICS METHOD

doi: 10.13205/j.hjgc.202206021

SHI Nian,
SU Kuizu^,

School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230000, China

Received Date: 2022-02-03
Available Online: 2022-09-01
Publish Date: 2022-09-01

Abstract

Abstract

A comprehensive evaluation system of the aerobic sludge granulation process was established based on the traditional fuzzy comprehensive evaluation method.Based on the data of the laboratory scale reactor that successfully cultivated aerobic granular sludge,the membership function and membership matrix were constructed by taking the seven parameters including SVI₅/SVI₃₀,specific gravity,roundness,length-diameter ratio,shape factor,fractal dimension,and compactness as the evaluation indexes.The weight matrix was constructed by combining analytic hierarchy process and entropy weight method.The process of aerobic sludge granulation was divided into four stages:floc stage,initial granulation stage,rapid granulation stage,and complete granulation stage.The model verification group was established,and the sludge granulation stage at different time in the system was predicted based on the established evaluation system.This comprehensive evaluation system can make an accurate and objective judgment for the real-time granulation status of sludge in aerobic granular sludge cultivation system,and can timely find the abnormal situation of the system,which is of great significance to maintaining the stability of the system.
- aerobic granular sludge,
- granulation process,
- fuzzy mathematics,
- comprehensive assessment,
- state prediction

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References(25)

References

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