23.
Where should the ROWPU trailer be located if a stream is to be used as a raw
water source? ___________________________.
24.
What is removed by the ROWPU multimedia fiIters when polymer solution is
added to raw water? _____________________________________
25.
List the four chemical feed metering pump drive units.
_______________________
_______________________
_______________________
_______________________.
26.
Which fiIter removes most of the dissolved solids during the ROWPU first filtration
stage? _____________________________.
27.
The Iine pressure must drop below ________ psi before the reverse osmosis
pump shuts down during the ROWPU second fiItration phase?
28. Which elements perform the final stage in ROWPU fiItration?
______________________________________.
29.
During the third fiItration stage, the water, stiII containing foreign matter, flows
through how many other pressure vessels? _____________________________.
30.
What is the water called that is rejected by reverse osmosis elements, and what
service does it serve? _______________________________________________
________________________________________________________________.
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MD0160
5-49