In a shallow waste stabilization pond, the sewage is treated by ______ – McqOptions

MCQOPTIONS

1.	In a shallow waste stabilization pond, the sewage is treated by ______.
A.	aerobic bacteria only
B.	sedimentation
C.	dual action of both aerobic bacteria and algae
D.	algae only
Answer» D. algae only

Discussion

No Comment Found

Related MCQs

Consider the following statements regarding waste stabilization ponds:1. The pond has a symbiotic process of waste stabilization through algae on one hand and bacteria on the other2. The oxygen in the pond is provided by algae through photosynthesis3. The detention period is of the order of two to three days4. The bacteria which develop in the pond are aerobicWhich of the above statements are correct?
A chamber made of concrete, fibre glass, PVC or plastic, through which domestic waste water, sewage flows for primary treatment is called
In an oxidation pond, the sewage is made non-putrescible primarily by
For a colony of 10,000 persons having sewage flow rate of 200 L/capita/day, BOD of applied sewage of 300 mg/L and organic loading of 300 kg/day/hectare, the area of an oxidation pond required for treating the sewage of the colony is
For detecting the nitrates in sewage, the matching colour may be developed by adding:
Comminutors in wastewater treatment plant are adopted to:
In a sludge digestion tank, if the moisture content of sludge is reduced from 90% to 80% then the percentage decrease in the volume of sludge is
If the efficiencies of BOD removal of first stage and second stage trickling filters are each 65%, then what is the overall BOD removal efficiency of these filters?
In the activated sludge process, sludge volume index is used to decide
Among the following, which is/are not pre-treatment units?