环境科学 TPO34-L2 APS digestion


环境科学

TPO34-L2 APS digestion

Listen to part of a lecture in an environmental engineering class.

1.What is the lecture mainly about?

  • A. A new use for methane gas produced in landfills
  • B. Environmental regulations regarding the management of organic wastes
  • C. Removing bacteria from landfills and wastewater treatment plants
  • D. A potentially useful technology for managing organic wastes

2.What is the professor’s opinion about the use of landfills to manage solid organic waste?

  • A. Landfills should be expanded to accommodate more types of waste.
  • B. Landfills are not a suitable long-term solution for solid organic waste disposal.
  • C. Landfills should be built farther away from population centers.
  • D. Landfills would be an effective means of recycling solid organic waste from farms.

3.What does the professor imply about processing solid organic waste in equipment designed for processing wastewater?

  • A. It is an economical way to process solid waste.
  • B. It is practical only for treating large amounts of solid waste.
  • C. It is not an efficient way to process solid waste.
  • D. It could reduce the cost of treating wastewater.

4.What does the professor suggest about methane and hydrogen gas?

  • A. They have beneficial uses if harnessed and contained.
  • B. They are destroyed in a later stage of APS processing.
  • C. They are both extracted during the first phase of APS digestion.
  • D. They are necessary to activate the anaerobic digestion process.

5.According to the professor, what are two advantages of APS digestion systems?
[CHOOSE 2 ANSWERS]

  • A. They can eliminate the need to transport the waste material.
  • B. They can handle both organic and nonorganic waste.
  • C. They can turn waste into fuel for electrical power generation.
  • D. They can be monitored efficiently from one central location.

6.What does the professor say is a promising focus for future research into APS digestion systems?

  • A. Trying to find a way to reduce the size of the APS containers
  • B. Trying to set up a demonstration project with a university
  • C. Determining whether food scraps from restaurants can be used in the system
  • D. Determining the most efficient combination of anaerobic bacteria


答案:

D B C A AC D

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