Which of the following is correct regarding pH in different stages of – McqOptions

MCQOPTIONS

1.	Which of the following is correct regarding pH in different stages of the sludge digestion process?
A.	Acid fermentation > Acid regression > Alkaline fermentation
B.	Acid regression > Acid fermentation > Alkaline fermentation
C.	Acid fermentation < Acid regression < Alkaline fermentation
D.	Acid fermentation < Acid regression > Alkaline fermentation
Answer» D. Acid fermentation < Acid regression > Alkaline fermentation

Discussion

No Comment Found

Related MCQs

Which of the following do not comes under continuous filtration?
What do you mean by the term ”Backwashing”?
What type of filter does not come under the Membrane filters?
Microfiltration can be used to remove viruses.
A city is to install rapid sand filters downstream of the clarifiers. The design loading rate is selected to be 160 m3/ (m2.d). The design capacity of the water works is 0.35 m3/s. The maximum surface per filter is limited to 50 m2 and find out the normal filtration rate?
A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure–drop is 2011Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure–drop as:α (ft/lb) = α (Δp)0.26, where α = 2.90×1010Viscosity of the filtrate = 6.72×10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance.
“Filter aid can also be added to the fermentation broth to increase the porosity of the cake as it forms”, what does this statement means?
Which of the following process is used to separate insoluble particles from liquids?
What do you mean by filter cake?
The slurry is ______________