Is the sludge coagulability high or low during endogenous respiration?
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When searching for information online on the \"endogenous respiration phase,\" two explanations were found: First, nutrients are exhausted, energy levels are very low; the sludge has good sedimentation properties but poor coagulation properties, there is less sludge, the degree of inorganicization of the sludge is high, and the water quality treated is good. II. Nutrients are almost depleted, energy levels are extremely low, and the rate of floc formation increases; at this point, bacteria exhibit the strongest agglomeration properties. Being in a “starving state,” they have a significant ability to adsorb organic matter. Free bacteria are consumed by protozoa residing on the surface of the activated sludge flocs, resulting in a significant improvement in the quality of the treated water. Which one is correct? Am I still not understanding? Thank you all for your advice. .
The two sentences convey basically the same meaning; the only difference is that the description of cohesion in them is opposite. The first statement is clearly incorrect, yet it leads to the conclusion that the accompanying phenomena have poor cohesion.