Question

In the wastewater treatment plant (WWTP) air is pumped into the water to
(A)Support the growth of anaerobic bacteria
(B)Support the growth of aerobic bacteria
(C)Disinfect water
(D)Blow human waste

Answer 1

Hint: Many organisms are involved in the wastewater treatment plant for some of the other functions. They are important for the process and they require oxygen to survive in the water.

Complete answer:
 In the wastewater treatment plant (WWTP) air is pumped into the water to support the growth of aerobic bacteria. In the Aerobic processes the bacteria which are used need oxygen, so air is circulated throughout the treatment tank and aerobic bacteria break down the waste within the wastewater. Some systems use a pre-treatment stage before the main treatment, also as sanitizing before releasing into the environment.

Additional Information: The Wastewater treatment- It is a process which is used to remove contaminants from wastewater or sewage water and then further convert it into an effluent which will, in turn, returned to the water cycle with acceptable impact or you can say the beneficial effect on the environment or reused for various purposes (called water reclamation). The treatment process takes place in an exceeding wastewater treatment plant (WWTP).
The treatment of wastewater is an element of the overarching field of sanitation. The sanitation process also includes the management of all types of waste, specifically human waste and solid waste also as stormwater (drainage) management. The main by-product of wastewater treatment plants is sewage sludge which is typically treated within the same or another wastewater treatment plant. Biogas is often another by-product of anaerobic treatment processes.
So, the correct answer is ‘Support the growth of aerobic bacteria’.

Note: There are three primary uses of compressed gas in all wastewater treatment applications: Aeration to provide the processing of bacteria with oxygen support. Agitation to stay the solids in suspension and a continuous, driving pump to maneuver the material.