A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater (sewage) flows for basic treatment. Settling and anaerobic processes reduce solids and organics, but the treatment efficiency is only moderate. Septic tank systems are a type of simple onsite sewage facility (OSSF). They can be used in areas that are not connected to a sewerage system, such as rural areas. The treated liquid effluent is commonly disposed in a septic drain field, which provides further treatment. Nonetheless, groundwater pollution may occur and can be a problem.
The activated sludge process is a type of wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.
An aerated lagoon is a simple wastewater treatment system consisting of a pond with artificial aeration to promote the biological oxidation of wastewaters.
Secondary treatment is a treatment process for wastewater to achieve a certain degree of effluent quality by using a sewage treatment plant with physical phase separation to remove settleable solids and a biological process to remove dissolved and suspended organic compounds. After this kind of treatment, the wastewater may be called as secondary-treated wastewater.
Sequencing batch reactors (SBR) or sequential batch reactors are a type of activated sludge process for the treatment of wastewater. SBR reactors treat wastewater such as sewage or output from anaerobic digesters or mechanical biological treatment facilities in batches. Oxygen is bubbled through the mixture of wastewater and activated sludge to reduce the organic matter. The treated effluent may be suitable for discharge to surface waters or possibly for use on land.
Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge is mostly water with lesser amounts of solid material removed from liquid sewage. Primary sludge includes settleable solids removed during primary treatment in primary clarifiers. Secondary sludge separated in secondary clarifiers includes treated sewage sludge from secondary treatment bioreactors.
The Ashbridges Bay Wastewater Treatment Plant is the city of Toronto's main sewage treatment facility, and the second largest such plant in Canada after Montreal's Jean-R. Marcotte facility. One of four plants that service the city of Toronto, it treats the wastewater produced by some 1.4 million of the city's residents and has a rated capacity of 818,000 cubic metres per day. Until 1999 it was officially known as the Main Treatment Plant. The plant has a 185 m (607 ft) high smokestack which is visible from most parts of the city.
Sewage treatment is the process of removing contaminants from domestic and municipal wastewater, containing mainly household sewage plus some industrial wastewater. Physical, chemical, and biological processes are used to remove contaminants and produce treated wastewater that is safe enough for release into the environment. A by-product of sewage treatment is a semi-solid waste or slurry, called sewage sludge. The sludge has to undergo further treatment before being suitable for disposal or application to land.
The Chemical Building is a historic wastewater treatment building at Field's Point Wastewater Treatment Facility in Providence, Rhode Island. Built in 1900–01, it is one of the two oldest buildings at Providence's main sewage treatment facility. It is a 2-1/2 story brick structure measuring 103 feet (31 m) by 38 feet (12 m). The long facades are divided into 9 bays, separated by brick piers. When originally built, the structure had a concrete first floor, a wooden second floor, and a loft area accessed by catwalks, and was used to hold and deliver chemicals used to neutralize the wastewater arriving via the Ernest Street Sewage Pumping Station. In the 1930s the plant was converted to use an active sludge process, and the interior of the building was altered to be a single large chamber.
The Ernest Street Sewage Pumping Station is an historic wastewater pumping station at Ernest and Ellis Streets near the wastewater treatment facility at Field's Point in Providence, Rhode Island. The surviving elements of the station include a main pumphouse and a smaller screening house, both built in 1897-98 as part of a major effort to modernize Providence's sewage treatment facilities. A third structure, a boiler house, was demolished in 1987, and a tall smokestack was taken down in the 1930s. The main pumphouse is a tall single-story brick structure with a hip roof and Colonial Revival features, and is set near Ernest Street, a short way east of its junction with Allens Avenue. The screening house is a smaller square structure, also with a hip roof, set behind and to the right of the pumphouse. The facility is used to pump raw sewage through an 88-inch main to the treatment facility.
The Reservoir Avenue Sewage Pumping Station is an historic wastewater pumping facility on the south side of the junction of Reservoir and Pontiac Avenues in southern Providence, Rhode Island. From the street it looks like a single-story brick structure with a hip roof, and metal doorways on its north and east elevations. This building stands atop a substantial concrete substructure, which houses a dry well and wet well. The dry well, on the eastern side, houses the pumps, while the wet well, occupies the western two-thirds of the facility. The floor of the interior includes glass blocks for viewing the facilities below, as well as metal trapdoors for accessing the pumps. Manual gate valves on the west side are used to control sewage flow through the west well. This facility is used to pump raw sewage eastward and uphill to a gravity conduit in Rutherglen Avenue. This conduit carries the sewage to the Field's Point treatment facility. The pumping station was built by the city of Providence in 1931, and is now owned by the Narragansett Bay Commission, which operates the region's wastewater treatment facilities.
The Sludge Press House, was an historic wastewater treatment facility building at the Fields Point Sewage Treatment Plant at Fields Point, Rhode Island in Providence, Rhode Island. It was a two-story brick structure, located near the center of the Field's Point facility, just east of the Chemical Building. It was about 138 by 51 feet in size, with a hip roof, and was built 1899-1901 as part of Providence's first wastewater treatment system. It house the facilities used at the end of the treatment process by which remaining solids were dewatered and compressed before final disposal.
The Washington Park Sewage Pumping Station is an historic wastewater pumping facility in Providence, Rhode Island. Its principal visible component is a concrete block structure, finished in stucco and topped by a hip roof, which is about 16 by 16 feet. This building stands atop a large cast-in-place concrete well, in which pumps and gate valves are housed. The facility was built in 1911 to pump raw sewage from the low-lying Washington Park area to the Field's Point wastewater treatment facility, which lies about 1,000 feet (300 m) to the north. The pump station is located well back from the street, behind a low brick distribution facility. It was added to the National Register of Historic Places in 1989.
Fields Point is a historic park in the Washington Park neighborhood of Providence, Rhode Island jutting into Narragansett Bay right near the Providence River and Route 95.
The Office of City Engineer of Providence, Rhode Island is an office that is credited with the design of a number of notable public works.
Mogden Sewage Treatment Works is a sewage treatment plant in the Ivybridge section of Isleworth, West London, formerly known as Mogden. Built in 1931–36 by Middlesex County Council and now operated by Thames Water, it is the third largest sewage works in the United Kingdom. It treats the waste water from about 1.9 million people served by three sewers in North and West London. The plant has been extended to its geographical boundarys and is constantly being upgraded with new process, most recently in OfWat Amp6 by the Costain Atkins Joint venture who delivered 6 MW of CHP generation, New process air blowers for Batterys A&B and 6 new Gravity sludge thickening streams. The site now covers 55 hectares.
The Newtown Creek Wastewater Treatment Plant is the largest sewage treatment facility operated by the New York City Department of Environmental Protection. Since 2010, its eight metallic "digester eggs," which are 140 feet tall and dramatically illuminated with blue light at night, have made it a local landmark, particularly to motorists on several nearby roadways in the New York City boroughs of Brooklyn, Queens, and Manhattan. It is located on the Newtown Creek in Brooklyn's Greenpoint neighborhood along Greenpoint Avenue.
The Great Lakes Water Authority (GLWA) is a regional water authority in the U.S. state of Michigan. It provides drinking water and sewer services for the Southeast Michigan communities, including Wayne, Oakland, and Macomb counties, among others.
The Thomas P. Smith Water Reclamation Facility (TPS) is owned and operated by the city of Tallahassee, Florida. The facility provides sewage treatment services for Tallahassee, Florida and the surrounding areas.
