Sewage sludge (biosolids) removed from a municipal wastewater treatment plant is a mixture of organic material and water. Research and explain why the incineration of sewage sludge may require more energy than it produces. Explain why people may be reluctant to use biosolids as a fertilizer for food crops.

Sewage systems are used all around the world transferring waste to treatment plants where they are filtered and traded in for organic material. If the sluge were to be incinerated it could be repurposed, however the gas used to burn the sewage waste comes from condensing saturated fuel oil and requires 195 SCM of natural gas to successfully complete the chemical transfer. That's a lot of energy, and the natural process costs plenty more then what you're getting in returns. Through the process toxins can develop inside of the incinerated waste which could poison crops and animals, studies also show the process can release carbon monoxide into the air. To conclude it's called sewage waste for a reason, what goes down should stay down instead of putting what we eat and inhale at stake.

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AnkitM AnkitM · Answer 2 · 2022-05-20T15:51:34+02:00

The incineration of sewage sludge may require more energy than it produces because of the high cost of energy.

Municipal wastewater treatment plants are estimated to consume more terawatt hours per year of electricity, which equates to about billions in annual electric costs.

That's a lot of energy, and the results show that wastewater sludge able to produced up to 44.82 ml biogas/kg of sludge

People may be reluctant to use bio solids as a fertilizer for food crops.

because:-

One health risk with the land application of bio solids is the potential exposure to pathogens (disease causing organisms)
One of the risk is that the bio solids may contain chemicals that are directly toxic in small concentrations or doses.

What is sewage sludge?

Sewage sludge is a product of wastewater treatment.

Wastewater enter the sewage system and flow into wastewater treatment facilities, where the solid wastes are separated from the liquid wastes through settling.
It form Bio solids.

To know more about Sewage sludge here

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