Which of the following is a part of inorganic impurities in the sewage?
Phosphates
Sewage is a type of wastewater that is produced by a community of people. Controlling phosphorous discharged from municipal and industrial wastewater treatment plants is a key factor in preventing algal blooms which ultimately lead to depleted oxygen levels and generally poor water quality.
Organic waste is material that is biodegradable and comes from either a plant or an animal. Organic waste is usually broken down by other organisms over time. Whereas inorganic wastes (also known as non-biodegradable waste) are chemical substances of mineral origin. They include waste material such as sand, salt, Iron, Calcium, and other mineral materials that are only slightly affected by the action of organisms.