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Combined Sewage Overflow
A combined sewer is a type of gravity sewer with a system of pipes, tunnels, pump stations etc. to transport sewage and urban runoff together to a sewage treatment plant or disposal site. This means that during rain events, the sewage gets diluted, resulting in higher flowrates at the treatment site. Uncontaminated stormwater simply dilutes sewage, but runoff may dissolve or suspend virtually anything it contacts on roofs, streets, and storage yards. As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment, heavy metals, organic compounds, animal waste, and oil and grease. Combined sewers may also receive dry weather drainage from landscape irrigation, construction dewatering, and washing buildings and sidewalks. Combined sewers can cause serious water pollution problems during combined sewer overflow (CSO) events when combined sewage and surface runoff flows exceed the capacity of the sewage treatment plant, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CSO Diagram US EPA
CSO or C.S.O. may refer to: Occupations * Chief scientific officer * Chief Scientist Office of the Scottish government * Chief security officer * Chief services officer * Chief Signal Officer (U.S. Army) * Chief strategy officer * Chief sustainability officer * Combat systems officer (U.S. Air Force) * Community service officer * Police community support officer * Sales manager (chief sales officer) * Chief of Space Operations, the head of the United States Space Force Orchestras * Canberra Symphony Orchestra * Canton Symphony Orchestra * Carmel Symphony Orchestra * Charleston Symphony Orchestra * Charlotte Symphony Orchestra * Chicago Symphony Orchestra * Christchurch Symphony Orchestra * Cincinnati Symphony Orchestra * Colorado Symphony Orchestra * Columbia Symphony Orchestra * Columbus Symphony Orchestra Organizations * Bureau of Conflict and Stabilization Operations, at the US Department of State * Centers for Space Oceanography * Central Statistical Organisation, India * Ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decision Support System
A decision support system (DSS) is an information system that supports business or organizational decision-making activities. DSSs serve the management, operations and planning levels of an organization (usually mid and higher management) and help people make decisions about problems that may be rapidly changing and not easily specified in advance—i.e., unstructured and semi-structured decision problems. Decision support systems can be either fully computerized or human-powered, or a combination of both. While academics have perceived DSS as a tool to support decision making processes, DSS users see DSS as a tool to facilitate organizational processes. Some authors have extended the definition of DSS to include any system that might support decision making and some DSS include a decision-making software component; Sprague (1980)Sprague, R;(1980).A Framework for the Development of Decision Support Systems" MIS Quarterly. Vol. 4, No. 4, pp. 1–25. defines a properly termed D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ratcliff Beach CSO Discharge In London
Ratcliff or Ratcliffe is a locality in the London Borough of Tower Hamlets. It lies on the north bank of the River Thames between Limehouse (to the east), and Shadwell (to the west). The place name is no longer commonly used. History Etymology and origin The name ''Ratcliffe'' derives from the small sandstone cliff that stood above the surrounding marshes, it had a red appearance, hence ''Red-cliffe''. Ratcliff was historically part of the Manor and Ancient Parish of Stepney. The place name Stepney evolved from ''Stybbanhyð'', first recorded around 1000 AD. ''Stybbanhyð'' probably translates into modern English as "Stybba's hithe (landing place)", with Stybba the individual who owned the Manor (estate). The hithe itself is thought to have been at Ratcliff, just under south of St Dunstan's Church. Civil and ecclesiastical administration The hamlet was divided between the parishes of Limehouse and Stepney until 1866, when it was constituted a separate civil parish ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anacostia Combined Sewer Outflow 2018
Anacostia is a historic neighborhood in Southeast (Washington, D.C.), Southeast Washington, D.C. Its downtown is located at the intersection of Marion Barry Avenue (formerly Good Hope Road) SE and the neighborhood contains commercial and government buildings, mid-rise mixed development, city-sanctioned art murals and galleries (under the "Art to Go Go" initiative), a performing arts center, a playhouse theater, the local landmark, "The Big Chair," Frederick Douglass National Historic Site, Frederick Douglass's Home (a museum and historic site) and is adjacent to the Fort Stanton Park neighborhood which hosts the Smithsonian Anacostia Community Museum. It is located directly east of and along the Anacostia River, after which the neighborhood is named. Bounded by the Southeast Freeway to the north and northwest, the Suitland Parkway to the south and southwest as well as Fort Stanton and Ricketts Park to the east, Anacostia includes all of the Anacostia Historic District, which wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Headworks
Headworks is a civil engineering term for any structure at the head or diversion point of a waterway. It is smaller than a barrage and is used to divert water from a river into a canal or from a large canal into a smaller canal. at Web archive An example is the Horseshoe Falls at the start of the Llangollen Canal The Llangollen Canal () is a navigable canals of the United Kingdom, canal crossing the border between England and Wales. The waterway links Llangollen in Denbighshire, north Wales, with Hurleston in south Cheshire, via the town of Ellesmere, S .... Historically the phrase "headworks" derives from the traditional approach of diverting water at the start of an irrigation network and the location of these processes at the "head of the works". See also * List of barrages and headworks in Pakistan References Civil engineering Irrigation {{Civil-engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convective Precipitation
In meteorology, the different types of precipitation often include the character, formation, or phase of the precipitation which is falling to ground level. There are three distinct ways that precipitation can occur. Convective precipitation is generally more intense, and of shorter duration, than stratiform precipitation. Orographic precipitation occurs when moist air is forced upwards over rising terrain and condenses on the slope, such as a mountain. Precipitation can fall in either liquid or solid phases, is mixed with both, or transition between them at the freezing level. Liquid forms of precipitation include rain and drizzle and dew. Rain or drizzle which freezes on contact with a surface within a subfreezing air mass gains the preceding adjective "freezing", becoming the known freezing rain or freezing drizzle. Slush is a mixture of both liquid and solid precipitation. Frozen forms of precipitation include snow, ice crystals, ice pellets (sleet), hail, and graupel. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowmelt
In hydrology, snowmelt is surface runoff produced from melting snow. It can also be used to describe the period or season during which such runoff is produced. Water produced by snowmelt is an important part of the annual water cycle in many parts of the world, in some cases contributing high fractions of the annual runoff in a watershed. Predicting snowmelt runoff from a drainage basin may be a part of designing water control projects. Rapid snowmelt can cause flooding. If the snowmelt is then frozen, very dangerous conditions and accidents can occur, introducing the need for salt to melt the ice. Energy fluxes related to snowmelt There are several energy fluxes involved in the melting of snow. These fluxes can act in opposing directions, that is either delivering heat to or removing heat from the snowpack. Ground heat flux is the energy delivered to the snowpack from the soil below by conduction. Radiation inputs to the snowpack include net shortwave (solar radiation includi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Society Of Civil Engineers
The American Society of Civil Engineers (ASCE) is a tax-exempt professional body founded in 1852 to represent members of the civil engineering profession worldwide. Headquartered in Reston, Virginia, it is the oldest national engineering society in the United States. Its constitution was based on the older Boston Society of Civil Engineers from 1848. ASCE is dedicated to the advancement of the science and profession of civil engineering and the enhancement of human welfare through the activities of society members. It has more than 143,000 members in 177 countries. Its mission is to provide essential value to members, their careers, partners, and the public; facilitate the advancement of technology; encourage and provide the tools for lifelong learning; promote professionalism and the profession; develop and support civil engineers. History The first serious and documented attempts to organize civil engineers as a professional society in the newly created United States were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm Drain
A storm drain, storm sewer (United Kingdom, U.S. and Canada), highway drain, surface water drain/sewer (United Kingdom), or stormwater drain (Australia and New Zealand) is infrastructure designed to drain excess rain and ground water from impervious surfaces such as paved streets, car parks, parking lots, footpaths, sidewalks, and roofs. Storm drains vary in design from small residential dry wells to large municipal systems. Drains receive water from street gutters on most motorways, freeways and other busy roads, as well as towns in areas with heavy rainfall that leads to flooding, and coastal towns with regular storms. Even rain gutters from houses and buildings can connect to the storm drain. Since many storm drainage systems are gravity sewers that drain untreated storm water into rivers or streams, any hazardous substances poured into the drains will contaminate the destination bodies of water. Storm drains sometimes cannot manage the quantity of rain that fall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urban Runoff
Urban runoff is surface runoff of rainwater, landscape irrigation, and car washing created by urbanization. Impervious surfaces (roads, parking lots and sidewalks) are constructed during land development. During rain, storms, and other Precipitation (meteorology), precipitation events, these surfaces (built from materials such as Asphalt concrete, asphalt and concrete), along with rooftops, carry polluted stormwater to storm drains, instead of allowing the water to Infiltration (hydrology), percolate through soil. This causes lowering of the water table (because groundwater recharge is lessened) and flooding since the amount of water that remains on the surface is greater.Water Environment Federation Alexandria, VA; an American Society of Civil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhole Brighton
A manhole (utility hole, maintenance hole, or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover, are often used as an access point for an underground public utility, allowing inspection, maintenance, and system upgrades. The majority of underground services have manholes, including water, sewers, telephone, electricity, storm drains, district heating, and gas. Manholes are generally found in urban areas, in streets and occasionally under sidewalks. In rural and undeveloped areas, services such as telephone and electricity are usually carried on utility poles or even pylons rather than underground. In Australia, ''manhole'' also commonly refers to an access hatch used to get access from a room or hallway into the ceiling cavity of a building. These manholes are typically around square. Construction Manhole closings are protected by a grating or manhole cover, a flat plug desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macadam
Macadam is a type of road construction pioneered by Scottish engineer John Loudon McAdam , in which crushed stone is placed in shallow, convex layers and compacted thoroughly. A binding layer of stone dust (crushed stone from the original material) may form; it may also, after rolling, be covered with a cement or bituminous binder to keep dust and stones together. The method simplified what had been considered state-of-the-art at that point. Predecessors Pierre-Marie-Jérôme Trésaguet Pierre-Marie-Jérôme Trésaguet is sometimes considered the first person to bring post-Roman science to road building. A Frenchman from an engineering family, he worked paving roads in Paris from 1757 to 1764. As chief engineer of road construction of Limoges, he had opportunity to develop a better and cheaper method of road construction. In 1775, Tresaguet became engineer-general and presented his answer for road improvement in France, which soon became standard practice there. Paperback ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
