WorksheetsA348-P12
Total questions: 10
Worksheet time: 5mins
Which of the following statement is about equalization basin?
Equalization basins are used as a final stage in wastewater treatment plant
The type of equalization basin is not dependent on the variability of the wastewater
Equalization basins can prevent the toxic materials from entering the biological treatment plant
Equalization basins incur additional cost in maintaining the downstream facilities
The following are sources of industrial wastewater, EXCEPT:
Landfill
Resident Building
Factories Building
Refinery Plant
Which of the following is required to be introduced into the aeration tank for the biological treatment?
Oxygen
Carbon Dioxide
Heat
Sunlight
Solids Retention Time (SRT) is ________
The time taken to produce 10 kg of sludge in the aeration tank
The time taken for the sludge to flow from the clarifier to the aeration tank
The time taken for the sludge stays in the activated sludge system
The time taken for the wastewater to flow in the activated sludge system
What causes SRT to increase?
Increase of flow rate
Increase of substrate concentration
Increase of sludge flow rate
Increase of return sludge flow rate
What is the bacteria provide to the algae in a facultative pond?
CO2
O2
BOD
COD
What is advantage for anaerobic pond?
It can break down more complex organic matters
It requires high operating costs
It can reduce number of faecal coliform
It needs oxygen for the operation
For the activated sludge process, how can the microorganisms reduce BOD in the wastewater?
Aerobic respiration
Photosynthesis
Sedimentation
Digestion
Activated sludge process uses ___________ to degrade organics from wastewater.
Microorganisms
Oxygen
Carbon Dioxide
Solid Catalyst
