The settlement ratio has dropped to just 20; the supernatant is very clear, and the effluent also meets the standards with clear water. Under microscopic examination, it seems there are fewer microorganisms than before...

2015-08-14View Original

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What is the reason why the dissolved oxygen level remains around 2.1? I need help on how to recover. Thank you!

Reply #22015-08-14

There are fewer types of bacteria visible under microscopy compared to before. What has decreased? Is it the dominant species that are taking over, causing the other bacteria to become invisible?

Reply #32015-08-14

Based on your description, it seems to be operating in a good condition; the bacteria are mainly rotifers, with shield protozoa and metazoa also present, while no other bacteria can be seen, which is quite normal.

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The settlement ratio has dropped to just 20; the supernatant is very clear, and the effluent also meets the standards with clear water. Under microscopic examination, it seems there are fewer microorganisms than before...

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