RO Session 1_Part 2

RO can remove suspended solid as well, but this is not RO main function. RO will foul easily if RO feed contain high level of suspended solids.

• True

• False.

Filtration mode for UF is __(a)__; for RO is __(b)__

• (a) Dead End;

  (b) Cross flow

• (a) cross flow

  (b) dead end

• both dead end

Osmotic pressure for SW with TDS 35k ppm is 25 bar. When i increase feed pressure to 35 bar, i will be able to meet the permeate flow and quality required.

• True

• False

Concentration factor (CF) can be applied on field to cross check if there is any abnormal reading for flowmeter and/or conductivity analyzer.

• Yes !!!

• I dont think so

RO designed with more PASSES is to improve_________.

• Permeate quality

• Recovery

RO designed with multi STAGES is to improve ________.

• Permeate quality

• Recovery

This plant RO system design is ______

• 2 passes, Full 2nd pass

• 2 passes, Partial 2nd pass

• 2 passes , Partial Split

NaOH dosing at LPRO inlet is to improve _______

• permeate water taste

• Conductivity in Permeate

• Boron or bicarbonate rejection

• Feed pressure

It's normal to run RO at 100% recovery (i.e. no concentrate flow).

• confirm plus chop : FALSE !!!!

• I think .. err .. May be YES ?

Feed and concentrate streams are flowing on the same side of RO membrane.

• i think so ~

• NO~~~~