Question

What are the different types of inorganic and organic impurities generally present in sewage?

Answer 1

Impurities are chemical substances that differ from the chemical composition of the material or compound of interest inside a confined amount of a sample. Impurities can be found in nature or are created during the synthesis of a chemical compound. Sewage is wastewater that is discharged from residences, hospitals, industries, offices, and other locations. It also contains rainwater that runs down the streets in a storm.

Complete answer:
Sewage (also known as domestic or municipal wastewater) is a type of wastewater produced by a group of people. The volume or rate of flow, physical condition, chemical, and toxic constituents, and bacteriologic status are all factors to consider (which organisms it contains and in what quantities)
Greywater (from sinks, bathtubs, showers, dishwashers, and clothes washers), blackwater (from toilets, combined with the human waste flushed away), soaps and detergents, and toilet paper make up the majority of it (less so in regions where bidets are widely used instead of paper). The proper collection and disposal of a community's liquid wastes are essential.
Sewage is usually discharged from a building's plumbing into a sewer, which then transports it to a treatment facility, or into an onsite sewage facility. The sewer design determines whether it is combined with surface runoff (sanitary sewer or combined sewer). The truth is that most wastewater produced around the world goes untreated, resulting in widespread water pollution, particularly in low-income countries.
In water, the most common types of impurities are organic and inorganic.
Biodegradable products such as human feces, oil, and animal waste such as excreta and urea from urine, as well as pesticides, are considered organic.
Metals, phosphate, nitrate, and other non-biodegradable products fall into the inorganic category.

Note:
Sewage is now considered an outdated term, and "wastewater" is increasingly being used in its place. The terms "sewage" and "sewerage" have the same meaning in American English. "Sewerage" refers to the infrastructure that transports sewage in both common English and technical and professional English in the United States.