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MBR capital cost
MBR operating cost
MBR database

Upgrading to MBR

Electricity cost

Cost comparison of MBR and SBR

MBR operating costs

The price of hollow fiber MBR membrane dropped to around US$ 50/ m2 from US$400/m2 in the past decade.   The typical net flux of MBR is 25 LMH, so each m3/d treatment capacity  needs 1000/24/25= 1.67 m2 membrane which costs US$ 83.5 only. Membrane replacement accounts for 10%-40% of operating cost.
EPA fact sheet shows that the operating cost of MBR system is US$ 0.47 /m3 including all electricity fee, membrane replacement, chemical fees, but not including
amortization of initial investment.
Other cost estimates show the operating cost of 3,785 m3/d MBR plant is around  US$0.11-0.15 per m3 wastewater treated. The operating cost of a 37,850 m3/d MBR plant is US$ 0.10-0.15 per m3 wastewater treated. These estimates are much lower than EPA's estimate.  The operating cost does not seem vary much with treatment capacity.

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