What are the reasons for the decrease in microbial concentration in microbial wastewater treatment reactors?
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What are the reasons for the decrease in microbial concentration in microbial wastewater treatment reactors?
This is due to reasons such as low concentrations of organic matter in the influent water, low winter temperatures, an increase in toxic substances in the influent water, excessive discharge of excess sludge, over-aeration, and under-aeration
Microorganisms also have certain requirements regarding their living environment. In the process of wastewater treatment, certain components in the wastewater serve as nutrients for these microorganisms. As time goes by, the number of microorganisms increases exponentially, but the nutrients in the water gradually decrease. There is competition among the microorganisms, and when the nutrients run out, they will die from lack of food. There are also many toxic and harmful substances in wastewater; some of these substances can \"poison\" microorganisms, while others act as inhibitors to them. As a result, the number of microorganisms decreases, and thus the concentration of microorganisms in wastewater drops.