Microplastic Removal in a Wastewater Treatment Train (2D)

Municipal wastewater is one of the largest routes microplastic fragments take from consumer products into rivers and oceans, and how much gets through depends on physics that treatment engineers actually design around: Stokes settling in the primary clarifier, floc entrainment in the biological stage, and pore-size sieving in tertiary filtration. This 2D cutaway renders all three stages as a pannable side-view treatment train, streams individual plastic particles through them, and rolls a physically-grounded pass/fail probability for each stage from the particle's diameter, its plastic density and the plant's flow rate — with a live theory chart plotting those same removal-probability curves against diameter — so the readouts are a direct consequence of the same equations a plant operator would use.