Why is there a lot of foam in the aeration tank, and why doesn’t it break down easily?
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Why is there a lot of foam in the aeration tank, and why doesn’t it break down easily?
High aeration volume, or too much surfactant
①① The raw water contains large amounts of surfactant components (resulting from substances added during the production process; the foam is white, with small bubbles that are light in weight and non-sticky). ② Tiny bubbles formed after the installation of new aeration heads (a short-term effect). ③ Large amounts of lipids or microorganisms are produced as a result of microbial growth (due to the natural growth and reproduction of microorganisms; the foam is muddy in color, with larger bubbles that are sticky). ⑥ Foam resulting from the degradation of sludge (sticky, muddy-colored foam that appears when aerobic sludge stays in the secondary sedimentation tank for too long and deteriorates)
It’s a normal phenomenon; which industry is it from?