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Sewage treatment (or domestic wastewater treatment) is a type of wastewater treatment that aims to remove contaminants from sewage to produce an effluent that is suitable to discharge or reuse. Sewage treatment plants (STPs) are facilities that process sewage using various technologies and criteria.
Learn about the different types of wastewater treatment plants, such as sewage, industrial, agricultural and leachate, and the processes they use to remove contaminants and produce effluent. Find out the global trends, challenges and examples of wastewater treatment and reuse.
Effluent is wastewater from sewers or industrial outfalls that flows directly into surface waters, either untreated or after being treated. Learn about the different types of effluent, the regulations and guidelines for discharging it, and the effects of pollution on the environment.
Sewage sludge is the semi-solid material produced during sewage treatment of wastewater. The term "septage" also refers to sludge from simple on-site sanitation systems, such as septic tanks. Learn about the quantities, types, and health and environmental impacts of sewage sludge.
Sewerage is the infrastructure that conveys sewage or stormwater using sewers. Learn about the history, types and challenges of sewerage systems, such as corrosion, water table lowering and fecal sludge management.
Learn about the process, technologies, benefits and challenges of reclaimed water, also known as wastewater reuse or water recycling. Reclaimed water is treated wastewater that can be used for various purposes, such as irrigation, industry, toilet flushing and groundwater recharge.
Wastewater is water used or contaminated in various applications or processes. Learn about different kinds of wastewater, such as sewage, industrial, leachate, return flow, surface runoff, and agricultural wastewater.
The goal of the pretreatment program is to protect municipal wastewater treatment plants from damage that may occur when hazardous, toxic, or other wastes are discharged into a sewer system, and to protect the quality of sludge generated by these plants. Discharges to a POTW are regulated either by the POTW itself, the state/tribe, or EPA. [40]