PETR 6039 - Water Treatment (Chp 17) Flashcards
The zeolite inside a water softener is used to:
A) Exchange sodium for calcium and magnesium
B) Regenerate the brine solution
C) Exchange calcium for magnesium
D) Rinse the softened water
E) Exchange soda for calcium and magnesium
A) Exchange sodium for calcium and magnesium
Ion exchange systems remove:
A) Hydroxide B) Elemental impurities C) Colloids D)Salts E) Sludge
B) Elemental impurities
Two ways of controlling the total dissolved solids in a boiler are manual blowdown and:
A) Draining condensate B) Chemical addition C) Continuous blowdown D) Venting E) Flocculent addition
C) Continuous blowdown
Zeolite of a sodium zeolite softener may be discharged to the sewer during the:
A) Slow rinse mode of regeneration B) Injection mode of regeneration C) Service mode of the softener D) Backwash mode of regeneration E) Fast rinse mode of regeneration
D) Backwash mode of regeneration
The regenerant used to regenerate a sodium zeolite softener is:
A) Hydrochloric acid B) Sodium hydroxide C) Caustic soda D) Sodium carbonate E) Sodium chloride
E) Sodium chloride
A method of treatment that is often used in conjunction with settling tanks is:
A) Deaeration B) Lime soda softening C) Demineralizing D) Zeolite softening E) Filtration
E) Filtration
A sodium zeolite softener needs regeneration because:
A) The resin is exhausted B) Ions get dirty and need to be flushed out C) Ions in the resin are hard to remove D) Suspended solids plug the resin E) Corrosion might occur
A) The resin is exhausted
A continuous blowdown line is:
A) Used on every boiler B) Used to reduce the dissolved gases in the boiler C) Installed in the mud drum D) Installed in the steam drum E) Used to reduce sludge
D) Installed in the steam drum
Impurities are maintained in solution to prevent:
A) Foaming B) Poor combustion C) Scaling and sludge formation D) Corrosion E) Priming
C) Scaling and sludge formation
The boiler blowdown should be used to:
A) Control the total dissolved solids B) Reduce feedwater pressure C) Reduce steam pressure D) Prevent scale formation E) Remove excess sodium sulfite
A) Control the total dissolved solids
By completing routine chemical testing on the boiler waters you can ensure your water treatment program is helping to prevent:
A) Burner problems B) Boiler fuel gas filters plugging C) High temperatures in boiler feedwater D) Corrosion, sludge, pitting, scaling E) Excess steam production
D) Corrosion, sludge, pitting, scaling
A possible reason that water out of the softener is hard:
A) Water pressure is too high
B) Failure to regenerate the softener soon enough
C) Too much salt in the brine tank
D) The water into the softener is softer than expected
E) The inlet filters are plugged
B) Failure to regenerate the softener soon enough
Two types of chemical feed pumps are:
A) Centrifugal and rotary B) Back and continuous C) Plunger and electronic pulse D) Positive displacement and dynamic E) Inlet and outlet feed pumps
C) Plunger and electronic pulse
Which tests should be used to verify quality of Potable water for drinking?
A) Physical B) Chemical C) All these are correct D) Microscopic E) Bacteriological
C) All these are correct
Once a sample is taken, it should be protected from extreme temperatures, tested as soon as possible and protected from:
A) Any light B) Magnetic waves C) Sunlight D) Handling E) Movement
C) Sunlight
