Journal of Guangxi Normal University(Natural Science Edition) ›› 2022, Vol. 40 ›› Issue (4): 215-226.doi: 10.16088/j.issn.1001-6600.2021062805

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Startup Characteristics in Anaerobic Moving-bed Biofilm Reactor with Different Fillers at Low Temperature

XIE Qingjie1*, WANG Fan1, A Qiong2, XIONG Xin’gang1, CHANG Chengwei1, JIANG Shan1   

  1. 1. School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang Jiangsu 212013, China;
    2. Environmental Science Institute of Tibet Autonomous Region, Lasa Xizang 850000, China
  • Published:2022-08-05

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Abstract: In order to adapt to the special environment and water quality in the high cold and anoxic area, the anaerobic MBBR process was selected to treat the low temperature rural wastewater, and the startup characteristics of three kinds of fillers were explored by investigating the morphology of biofilm on the fillers, the treatment effect on actual wastewater, the biofilm proliferation rate and the respiratory rate per gram of Levapor sponge filler, K3 filler and polyurethane sponge filler. The results showed that the biofilm appeared inside the K3 packing and outside the porous packing at first,then became black anaerobic biofilm with the consumption of dissolved oxygen in the reactor.The removal efficiency of ammonia nitrogen and total phosphorus in anaerobic reactor was low,and the removal rates were -15%-8% and -10%-15% at the last stage, respectively. The porous sponge fillers had higher COD removal rate, faster biofilm proliferation speed, but had shorter service life and higher endogenous specific respiration rate, while the removal rate of COD by K3 filler increased steadily, and K3 filler had slower biofilm formation speed because of its faster biofilm renewal speed, but had lower endogenous specific respiration rate, and longer service life under mechanical stirring, so it is more suitable for the biological carrier of anaerobic MBBR reactor.

Key words: low temperature, domestic wastewater, anaerobic, moving-bed biofilm reactor, filler, natural inoculation, removal ratio, respiratory rate

CLC Number: 

  • X703
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