Question: A membrane filtration unit is operating with 87.5 m 2 of membrane and processes 118 L/min feed of wastewater. The permeate flow is 88.9 L/min.

A membrane filtration unit is operating with 87.5 m² of membrane and processes 118 L/min feed of wastewater.

The permeate flow is 88.9 L/min.

The filter removes suspended solids from a waste stream such that the concentration in the permeate is 56.7 mg/L compared to 2,915 mg/L in the retentate.

Determine the % water recovery (i.e., % volume reduction). Report answer to one decimal place.

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