Sewage treatment is important for the environment as contaminants from wastewater are removed to dispose of appropriately in the surroundings for reuse. Usually, wastewater is obtained from various sources such as households, factories, or industries. There are various processes to treat sewage, and recycling can positively impact the environment. Sewage also plays a significant role in producing sludge during its treatment which contains contaminants from the wastewater and needs to be disposed of properly.