EFFECT OF INFLUENT COD CONCENTRATION ON MOTION VELOCITY OF MICROFAUNA IN ACTIVATED SLUDGE

HU Xiaobing; LI Jingjing; SHEN Yijun; CHANG Jing; LIU Haoyu; SU Junwen; ZHONG Meiying

doi:10.13205/j.hjgc.202307015

Volume 41 Issue 7

Jul. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(7): 109-115

HU Xiaobing, LI Jingjing, SHEN Yijun, CHANG Jing, LIU Haoyu, SU Junwen, ZHONG Meiying. EFFECT OF INFLUENT COD CONCENTRATION ON MOTION VELOCITY OF MICROFAUNA IN ACTIVATED SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(7): 109-115. doi: 10.13205/j.hjgc.202307015

Citation:

HU Xiaobing, LI Jingjing, SHEN Yijun, CHANG Jing, LIU Haoyu, SU Junwen, ZHONG Meiying. EFFECT OF INFLUENT COD CONCENTRATION ON MOTION VELOCITY OF MICROFAUNA IN ACTIVATED SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(7): 109-115. doi: 10.13205/j.hjgc.202307015

Citation:

HU Xiaobing, LI Jingjing, SHEN Yijun, CHANG Jing, LIU Haoyu, SU Junwen, ZHONG Meiying. EFFECT OF INFLUENT COD CONCENTRATION ON MOTION VELOCITY OF MICROFAUNA IN ACTIVATED SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(7): 109-115. doi: 10.13205/j.hjgc.202307015

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EFFECT OF INFLUENT COD CONCENTRATION ON MOTION VELOCITY OF MICROFAUNA IN ACTIVATED SLUDGE

doi: 10.13205/j.hjgc.202307015

1. Civil Engineering & Architecture, Anhui University of Technology, Ma'anshan 243032, China;
2. Engineering Research Center of Water Purification and Utilization Technology Based on Biofilm Process, Ministry of Education, Ma'anshan 243032, China

Received Date: 2022-05-25

Abstract

Abstract

In order to explore the effect of the concentration of organic matter on the microscopic animals' movement in activated sludge, the microfauna with ordinary movement modes (the linear swimming type, the curved swimming type and the comprehensive swimming type) were taken as the research object, and the effect of COD concentration on average linear velocity ($\bar V$), average angular velocity ($\bar W$) and average curve velocity ($\bar V$_CL) of microfauna were analyzed. The results showed that with the increase of COD concentration, the average angular velocity of curve swimming and fast-moving Frontonia depressa increased by 87.7%. The average angular velocity of Coleps hirtus, which moves very fast, increased by 49.1%. Both average angular velocities of the two curved swimming types were significantly correlated with COD concentration (r=0.921, r=0.955) with a better indicating function. The COD concentration was negatively correlated with the linear velocity of Peranema trichophorum (r=-0.723); it was positively correlated with the linear velocity of Frontonia depressa (r=0.877). Both are with certain indicative function. COD concentration had little effect on Anisonema acinus and Euchlanis sp., but had no significant effect on the curve velocity of Aspidisca lynceus.
- COD concentration,
- microfauna,
- linear velocity,
- angular velocity

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References(28)

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