Sewage refers to the liquid wastes that are produced by communities, which are conveyed through sewer systems for treatment or disposal. This waste material can consist of various substances, including domestic sewage effluents from residential areas and industrial liquid waste. Domestic sewage effluents typically originate from households and may contain a variety of organic and inorganic materials, such as human waste, food scraps, cleaning chemicals, and other pollutants. In contrast, industrial liquid waste may include byproducts from manufacturing processes, chemicals, heavy metals, and other contaminants that can pose a risk to human health and the environment. Sewage treatment processes typically involve physical, chemical, and biological processes to remove contaminants and reduce the environmental impact of the waste. Proper management of sewage is critical for public health and environmental protection, as untreated sewage can pose a significant risk to human health and the ecosystem.