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Volume 40 Issue 7
Sep.  2022
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Article Navigation >  ENVIRONMENTAL ENGINEERING  > 2022  >  40(7): 38-44
LV Shuangru, JIN Yanjun, LIU Guotao, REN Fumin, XI Chenggang, LU Tong, ZHU Jintong, ZHANG Chao. CHARACTERISTICS OF RESIDENTIAL DECORATION WASTE GENERATION AND MANAGEMENT COUNTERMEASURES:A CASE STUDY ON OLD PALACE AREA IN DAXING DISTRICT,BEIJING[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 186-192. doi: DOI:10.13205/j.hjgc.202207027
Citation: GUO Zirui, CHI Riguang. OPTIMIZATION OF THE PHYSICS PRESSURE UNDER ADD MODE IN PHA PRODUCTION WITH CFD SIMULATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 38-44. doi: DOI:10.13205/j.hjgc.202207006
shu

OPTIMIZATION OF THE PHYSICS PRESSURE UNDER ADD MODE IN PHA PRODUCTION WITH CFD SIMULATION

doi: DOI:10.13205/j.hjgc.202207006

  • School of Energy and Civil Engineering, Harbin University of Commerce, Harbin 150023, China

  • Received Date: 2021-10-20
    Available Online: 2022-09-02
    Abstract
  • Numerical simulation method was used to establish the fluid finite element analysis model of PHA accumulating by the mixed microbial culture (MMC) under aerobic dynamic discharge (ADD) and aerobic dynamic feeding (ADF) mode.The precipitation process was analyzed to discuss the generation principle and mechanism of physical selective pressure.The simulation obtained the distribution law of activated sludge with different sedimentation rate grades in the reactor with different residence times during the sedimentation process,and the distribution law of the sludge volume fraction along the vertical direction of the reactor.The results showed that the activated sludge in the ADD mode could form a relatively stable sedimentation difference stratified boundary during the sedimentation process.The sludge distribution volume fraction at a height of 0.6 m was about 0.75 within a residence time of 10~15 minutes,which provided a strong screening effect on the MMCs with strong PHA accumulating ability.The analysis process based on numerical simulation technology promoted the understanding of the mechanism of physical selective pressure screening,and could provide a theoretical basis for the optimization of parameters under ADD mode.
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    • References(31)
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