Membrane And Permeate Module; Function - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

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5.10 Membrane and Permeate Module

The schematic of the Membrane (TNK-601/602) and Permeate (P-701/702) Module is located
on the MBR 1 & MBR 2 HMI screen and shown below.

5.10.1 Function

Mixed liquor filtration and supplemental biological oxidation.
Since the solid-liquid separation process results in an accumulation of solids in the membrane
tank, the mixed liquor (containing both solids and filtrate) is continuously recycled to the first
aeration tank (TNK-501). This prevents excessive solids build-up in the membrane tank, and
maintains sufficient biomass in the anoxic and aeration tanks. The solids that accumulate in the
system consist of biomass that have grown from the influent organics and ammonia, as well as
non-biodegradable solids from the influent wastewater.
Vacuum pumps (P-701 and P-702) draw the water through the membranes under a low vacuum
of 0.07 to 0.25 bar.
newterra O&M Manual 63
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