Which water treatment method uses a pump to supply a desired chemical to the water at a rate proportional to the system flow?

a. neutralizing tank
b. chemical feeder
c. ozone injection
d. diatomaceous earth filter


ANSWER: b

Trades & Technology

You might also like to view...

How many foresters were working in the United States in May 2012? What agencies hire the most foresters?

What will be an ideal response?

Trades & Technology

Analyze the structure in the figure below by moment distribution. Determine all reactions and draw the shear and moment curves locating points of inflection and labeling values of maximum shear and moment in each span. Unless otherwise noted, EI is constant.

Trades & Technology

The process of adding chemicals to water to aid in sedimentation is

a. bio-precipitation b. coagulation c. disinfection d. aeration e. softening

Trades & Technology

A hot water heating system is installed in a house. The system needs 140 feet of 3/4-inch copper tubing. The tubing lists for $1.70 per foot. A 10% discount is given. How much does the tubing cost? Round the answer to the nearer whole cent.

Fill in the blank(s) with the appropriate word(s).

Trades & Technology