WorksheetsBiotechnologies in water treatment
Total questions: 9
Worksheet time: 5mins
What are the main elements to be removed during wastewater treatment?
H & M
N & P
Na & K
Heavy metals
Which type of bacteria is characterized by high phosphorus uptake?
PAOs – Phosphate-accumulating organisms
EBPR
Organisms present in standard active sludge
In which phase PAOs are able to accumulate large amount of phosphor
Both
Anaerobic
Aerobic
Why anaerobic phase is crucial for EBPR process:
PAOs are able to consume and discharge their “batteries”
Phosphate is turned into more digestible form
They are able to grow in this phase.
Does PAOs pollute water with phosphate at some point?
Yes, phosphate is environment friendly compound
No, they only accumulate phosphate
Yes, but they collect it later in much larger amounts
Which compounds are important for microbial fuel cells coupled with peroxicogulation process?
Spectrophotometer
Semiconductor film
Electrodes
Membrane
Why are the microbial fuel cells important for the peroxicoagulation process?
Because they supply an electric current
Because they are responsible for the fenton reaction
Because they supply protons needed for this reaction
None of the above are right
The peroxicoagulation process removes the dye by
Oxidating the cathode surface and thereby supplying the electrons to reduce the iron anode and generate hydroxylions
Using microorgansims that remove the dye
Reducing the graphite cathode and oxidating the iron anode
Oxidating the iron anode and thereby supplying electrons to reduce the cathode surface and generate hydroxylions
The physical processe(s) that allow the separation of pollutants from the water is/are:
Sedimentation
Metabolism of bacteria
Filtration
Distillation
