True and False - 3

Question 1

The MCRT does not effect the amount of oxidation that occurs in wastewater

Answer 1

F

Question 2

A combined sedimentation-digestion unit is a type of package treatment plant

Answer 2

T

Question 3

Chlorine is lighter than air and will collect on the ceiling if a leak occurs

Answer 3

F

Question 4

pH measuremetns and pond color are important indicators of how well a pond is functioning

Answer 4

T

Question 5

Ammonia soaked rags are a good way to find chlorine leaks

Answer 5

T

Question 6

The primary digester of a multiple anaerobic digester system is normally heated and mixed

Answer 6

T

Question 7

Large amounts of filamentous bacteria are important to a good settling activated sludge

Answer 7

F

Question 8

Nutrient removal is common for conventional activated sludge treatment plants

Answer 8

F

Question 9

Hydrochloric acid is formed when chlorine reacts with water

Answer 9

T

Question 10

As air bubbles through activated sludge most oxygen is absorbed

Answer 10

F

Question 11

Proteins aerobically decompose to nitrate, carbon dioxide and water

Answer 11

T

Question 12

Carbohydrate anaerobic decay results in the formation of odorous gasses, methane and organic acids

Answer 12

T

Question 13

Disinfection contact time is more important than disinfectant concentration

Answer 13

T

Question 14

Algae growth is accomplished through photosynthesis

Answer 14

T

Question 15

Data should be checked for the previous two to three weeks, when an activated sludge plant becomes upset

Answer 15

T

Question 16

Continuous active sludge wasting is required in an activated sludge plant

Answer 16

F

Question 17

Reducing the oxygen demand of organic substances in wastewater is the primary purpose of secondary treatment

Answer 17

T

Question 18

Thief hole is the name used for anaerobic digester sampling ports

Answer 18

T

Question 19

Sludge should not be withdrawn from the primary digester, unless it shows signs of bulking

Answer 19

F

Question 20

Disinfection is generally more effective in a clarified effluent than a turbid one

Answer 20

T

Question 21

Plastic, hair and cigarette butts are easily digested in either an anaerobic or aerobic digester.

Answer 21

F

Question 22

Volatile solids should account for 65 to 85% of the solids produced from an activated sludge plant

Answer 22

T

Question 23

Increases in temperature generally increase oxidation process

Answer 23

T

Question 24

Blower control is important to the activated sludge process

Answer 24

T

Question 25

Anaerobic digestion normally takes about 30 days

Answer 25

T