Engineers: MBR option would yield highest effluent quality and remove most microplastics

Sep 29, 2026

Consultants said the membrane bioreactor alternative would produce the best effluent quality and remove up to about 99% of microplastics, but it would use more energy and require periodic membrane replacement, increasing lifecycle costs.

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Bernardo, an engineer with Corello, told the board that the highest‑quality alternative under consideration uses a membrane bioreactor (MBR) and could substantially improve effluent quality compared with the district's current system.

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