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    The effect of worms on the microbial community structure of activated sludge

    • Last Update: 2021-06-18
    • Source: Internet
    • Author: User
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    (2) The effect of worms on the microbial community structure of activated sludge.
    Taking the mollusk gastropod micro-animals-scallops for example, scallops will affect the COD, ammonia nitrogen and total of sewage within the test density range during the sludge reduction process.
    Phosphorus removal has no effect, and has little effect on the sedimentation performance of the sludge.
    On this basis, it is further investigated whether worms have an effect on the microbial diversity and species uniformity of activated sludge
    .

    Continuously run the aeration tanks inoculated with different activated sludges, add scallops to the aeration tank after the operation is stable, and run a blank control test without scallops at the same time
    .


    After the activated sludge is subjected to quinone extraction, purification and HPLC analysis, the values ​​representing the diversity of microorganisms (DQ) and the distribution uniformity of microorganism species (EQ) can be calculated from the respective quinone fingerprint results


    Table 9-4 Different types of microorganisms in taxonomy corresponding to different types of quinones

    In the density range of 500~5000ind/m 3 worms (roll shells), the worm reduction sludge has no significant impact on the diversity of activated sludge microorganisms and the uniformity of species, that is, putting worms will not have a significant effect on sewage treatment.


    Influence


     

     

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