What is Sewage Treatment?
Sewage treatment refers to the process of removing microorganisms and other types of contaminants from wastewater. In more developed countries, most domestic waste is collected in a sewer system and sent through pipelines to a central sewage treatment plant. At these plants, sewage treatment in done in a multi-step process that removes or changes different types of material in stages, so that the end product, or effluent, is safe to return into the environment. All residences, businesses, hospitals, and other establishments which use water, produce wastewater in the form of sewage. Sewage is the collective term for water that drains from toilets, sinks, showers, and liquid industrial waste. A typical sewage treatment process involves pretreatment, as well as primary, secondary, and tertiary treatment stages. Pretreatment includes the process of removing large objects from sewage to avoid the clogging or damaging of equipment further in the treatment process. Items such as sticks, rags,
