UF Training

What is the UF pore size used in this plant ?

• 0.02um

• 0.03um

• 0.04um

Which is NOT true about UF function ?

• remove suspended solids

• remove particles with size larger than 0.02um

• remove dissolved ions such as Na, Cl etc.

What is the backwash flux required for the UF installed in this plant ?

• 100lmh

• 80lmh

• 200lmh

• 230lmh

Which is NOT true about CEB for the UF used in this plant ?

• acid CEB should target pH2.3

• high pH CEB should target pH 9.5 with free chlorine of 20ppm

• high pH CEB should target pH 12 with free chlorine of 60ppm

What is the permeability to trigger CIP for this plant ?

• 150lmh/bar

• 250lmh/bar

• 350lmh/bar

• 450lmh/bar

If the design flux is 75lmh, it's fine to operate UF at 60lmh. Select the best answer.

• Yes

• No

• Yes, but recovery will be lower.

• No, we should not under utilize UF

If design flux is 75lmh, it's fine to push the UF to produce more at higher flux of 90lmh.

• True

• Fasle

During the CIP, chemical should be supplied from ________ side of membrane.

• Feed

• Filtrate

For UF BW, only BW flux is important. It doesn't matter how long we set for the BW duration and BW interval.

• True

• False

During filtration, the flow path is ___________ for the UF used in this plant

• Inside-out

• Outside-in