Final answer:
The product of a wastewater treatment facility that is often used as a fertilizer on farm fields is sludge or biosolids. These materials are treated in digesters to reduce volume and destroy pathogens, after which they can be safely applied to crop fields as nutrient-rich fertilizers.
Thus the corret opctipon is:b
Step-by-step explanation:
The product of a wastewater treatment facility that is often put on farm fields as a fertilizer is b) Sludge or biosolids.
During the wastewater treatment process, solids like sludge are removed and then processed further in devices called digesters. In these digesters, the material is heated and kept for 20-30 days, which reduces volume, minimizes odors, and destroys potentially disease-causing organisms.
Once it's determined that the sludge is free of dangerous contaminants, it can be applied to farm fields as a rich source of nutrients for crops.
In the context of wastewater treatment, sludge digestion is a process where sewage sludge from the bottom of the settling tank is treated with bacteria to reduce its volume and make it safer to handle.
This digestion process can sometimes produce methane, which can be used as an energy source.
The treated sludge, when used as a fertilizer, provides essential nutrients to the soil and helps close the loop in waste management by repurposing a byproduct of the treatment process.
Disinfection, another wastewater treatment step, involves adding chemicals like chlorine to the water to kill harmful bacteria and pathogens.
However, chlorine gas, activated carbon, and disinfection byproducts are not used as fertilizers on farm fields, as they are either harmful or have no value as soil amendments.
The complete question is:Which of the following products of a wastewater treatment facility is often put on farm fields as a fertilizer? a) Chlorine gas b) Sludge or biosolids c) Activated carbon d) Disinfection byproducts is: