B Exam: Iron And Manganese Flashcards

Greensand treated with Potassium Permanganate is used to remove ______ from water?

An iron bacteria that will oxidize iron in water and use the energy for reducing carbon dioxide to organic forms is a?

What is the best method to test for iron in the water?

When testing for iron, if there is clay or visible rust you should not ______ the sample?

Polyphosphate should always be added to the water prior to?

Never use a polyphosphate over ______ old?

A WTP using polyphosphate to control iron corrosion is getting calls because of red water in the distribution system. What is the likely cause of the red water?

Soluble iron can be oxidized to insoluble precipitates by ______ and removed by sedimentation & filtration?

When using aeration to oxidize Iron from the water, increasing the ______ will improve the removal efficiency?

What chemical is commonly used to dechlorinate large amounts of water?

Potassium Permanganate is used with ______ to remove iron and manganese from water.

What is used to regenerate a manganese greensand filter?

What causes pink water?

A WTP with greensand treatment is receiving red water complaints from its customers. What is the likely cause?

Electromedia iron and manganese removal systems use what chemical to remove sulfur compounds causing taste and odor problems?

The influent to a manganese greensand filter has a pinkish/orange color. What does this indicate?

A pink color in the greensand filter effluent indicates?

Greensand filter effluent has a yellow to brownish color. Effluent has high iron and manganese content. What is the problem?

How would you correct the problem in question 18?

How would you get rid of the red water that is in the distribution system?

Filter effluent clear, iron level low, and manganese level higher than raw water. What is the most likely cause?