Core Chinese Journal
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Source Journal for Chinese Scientific and Technical Papers
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Volume 38 Issue 1
Mar.  2020
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SONG Le-yuan, GUO Xin-chao, YU Jing. EFFECT OF SUSPENDED CARRIERS ADDITION ON PERFORMANCE AND MEMBRANE FOULING OF AnMBR[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 87-92. doi: 10.13205/j.hjgc.202001013
Citation: SONG Le-yuan, GUO Xin-chao, YU Jing. EFFECT OF SUSPENDED CARRIERS ADDITION ON PERFORMANCE AND MEMBRANE FOULING OF AnMBR[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 87-92. doi: 10.13205/j.hjgc.202001013

EFFECT OF SUSPENDED CARRIERS ADDITION ON PERFORMANCE AND MEMBRANE FOULING OF AnMBR

doi: 10.13205/j.hjgc.202001013
  • Received Date: 2019-03-21
  • The effect of suspended carriers addition on COD removal characteristics, sludge mixed liquor properties and membrane fouling in a separated anaerobic membrane bioreactor(AnMBR) were studied. The results showed when the organic load was 2.09 kg/(m3·d), the sludge load was 0.54 kg/(kg·d), the hydraulic retention time(HRT) was 48 h, and the temperature was (35±2) ℃, compared with the stage that suspended carriers was not added, the COD removal rate of the AnMBR increased from 96.6% to 97.9%, and methane yield increased by 16%. Meanwhile, the average sludge particle size of the AnMBR mixture increased, the cake resistance, total filtration resistance, the proportion of cake resistance in total resistance were reduced by 7.8%, 6.5% and 1.3%, the concentration of soluble extracellular polymeric substances (SEPS) and bound extracellular polymeric substances (BEPS) decreased by 20.5% and 29.4%, the linear growth rate of the transmembrane pressure(TMP) was reduced, and the membrane fouling cycle was slowed down significantly, after the suspended carriers was added. Without extra energy consumption, the addition of suspended carriers could improve the properties of the sludge mixture of AnMBR, also strengthen the treatment effect and control the membrane fouling.
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