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Texas Waste Water Treatment Ch#03 Composition and Characteristics - Statistics
General Stats
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This quiz has been taken 104 times
93 since last reset
- The average score is 11 of 15
Answer Stats
| Question | Answer | % Correct |
|---|---|---|
| A type of organic matter that may be present in waste water is ________. | proteins | 93%
|
| Why is it difficult to accurately describe waste water? | All of the above | 87%
|
| Oxygen in streams can be depleted by which of the following? | All of the above | 87%
|
| Solids may be classified as which of the following? | All of the above | 80%
|
| A kind of gas found in treatment systems that is not dangerous is ________. | dissolved oxygen | 80%
|
| A type of bacteria that would not be beneficial in treatment is ________. | pathogenic | 80%
|
| Solids in waste water include________. | settleable and non-settleable | 80%
|
| Cycles of decay include which of the following? | Carbon, nitrogen, AND sulfur | 73%
|
| Biochemical oxygen demand (BOD) is a measure of ________. | oxygen used up | 73%
|
| Which of the following will each person contribute to the waste water treatment plant? | An average of 100 gal WITH a BOD of 0.17 lb. per day | 67%
|
| A flow totalizer is required when the plant design flow is more than ________. | 0.5 MGD | 60%
|
| Which of the following do carbohydrates include? | Starches | 60%
|
| Which of the following describes organic compounds in waste water? | Contain carbon, hydrogen, and oxygen AND may also contain nitrogen, phosphorous, and sulfur | 47%
|
| Septic waste water ________. | is the result of bacterial action | 47%
|
| Which of the following describes the chemical oxygen demand (COD) test? | None of the above | 40%
|
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