A single 24-hr. composite sample indicated that the sewage flow pattern and characteristics were typical.

In 1900, the problem of sewage contamination was largely resolved when the city reversed the flow of the Chicago River so that it flowed away from Lake Michigan, rather than into it.

Archimedes ' screws are used in sewage treatment plants because they cope well with varying rates of flow and with suspended solids.

When the Sanitary District of Chicago later reversed the flow of the Chicago River, the pollution and sewage of the city of Chicago flowed down into the Illinois River.

Unfortunately, due to an incomplete understanding of the underground water flow in the region, sewage seeped into the cave, and hence into the drinking water, and the cave became severely polluted.

The two chambers are otherwise unconnected, with sewage flowing only through the upper sedimentation chamber and no flow of sewage in the lower digestion chamber.

During high precipitation periods a sanitary sewer overflow can occur, forcing untreated sewage to flow back into the environment.

The amount of flow in the Chattahoochee has also been decreased by interbasin water transfers, where water is withdrawn from the Chattahoochee, but discharged as treated sewage water into another river, such as the Oconee River, which flows to the Atlantic Seaboard.

A major problem was sewage: most of London's waste was allowed to flow into the Thames resulting in a horrendous smell in the summer months.

Conditions of scientific testing were rudimentary ; as part of his colleague Dr. Lyon Playfair's investigations into " overflowing privies " Sir Henry once took the role of test-vomiter to judge sewage flow.

In the low mudflats where much of the city was built, sewage was almost as likely to come in on the tide as to flow away.

Another example is the backwater valve ( for sanitary drainage system ) that protects against flooding caused by return flow of sewage waters.

These factors are generally worse when the water is discharged from sewage treatment processes, and tend to be worse in summer, when such discharges make up a greater proportion of the total flow in the river.

The average flow in the River Maun is around 13 Mld ( megalitres per day ) in dry weather, which is supplemented by Mansfield sewage treatment works, which discharges nearly 23 Mld.

The heavy sewage flow into the canal required regular dredging to keep the waters navigable.

The resulting sewage would flow into antiquated combined sewers that can overflow when it rains.

Gravity allows the sewage to flow eastwards, but in places such as Chelsea, Deptford and Abbey Mills, pumping stations were built to raise the water and provide sufficient flow.

Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, principally water and sewage.

It has been severely affected over the last century by raw sewage releases, urban runoff, shoreline bulkheading, dredging, the creation of artificial islands and the loss of natural fresh water flow into the bay.

On January 1, 2001 the Government of India launched a project to prevent sewage outfalls into the canal and Chennai's other waterways, and to dredge the canal to remove accumulated sediment and improve water flow.

The Anacostia Watershed Society ( AWS ) sued the Washington, D. C. Water and Sewer Authority ( WASA ) in 1999 for allowing more than of combined sewage and urban runoff ( stormwater ) to flow into the river via its antiquated combined sewer overflow system.

Until some years ago, the adjacent sewage works discharged effluents into the estuary, but the water outlets have since been treated with ultraviolet light and do not flow frequently into the river.

The city sewer maintenance division said efforts will be made Sunday to clear a stoppage in a sewer connection at Eddy and Elm Streets responsible for dumping raw sewage into the Providence River.

It had living quarters for people, fish tanks raising Tilapia for protein, a greenhouse watered with fish water and a closed loop sewage reclamation system that recycled human waste into sanitized fertilizer for the fish tanks.

It can turn sewage into air and water through microbial action.

In the event of heavy precipitation, the load on the sewage treatment plant at the end of the pipe becomes too great to handle and raw sewage is dumped into holding tanks, and sometimes into surface water.

While raising Chicago, and at first improving the health of the city, the untreated sewage and industrial waste now flowed into the Chicago River, then into Lake Michigan, polluting the primary source of fresh water for the city.

Much of the garbage and sewage from Detroit's rapid industrialization found its way into the river.

Filtration is also used to describe some biological processes, especially in water treatment and sewage treatment in which undesirable constituents are removed by absorption into a biological film grown on or in the filter medium.

However, Duvalier appealed to the black middle class of which he was a member by introducing public works into middle-class neighborhoods that previously had been unable to have paved roads, running water, or modern sewage systems.

Overloaded or malfunctioning septic tanks in karst landscapes may dump raw sewage directly into underground channels.

It was found that 32 tons ( 70, 000 pounds ) of raw sewage were being released into Lake Nicaragua daily.

One of the primary pathways by which food or water become contaminated is from the release of untreated sewage into a drinking water supply or onto cropland, with the result that people who eat or drink contaminated sources become infected.

In developing countries most sewage is discharged into the environment or on cropland ; even in developed countries there are periodic system failures resulting in a sanitary sewer overflow.

The sewage went through channels directly into the Po, for which the European Environment Agency cited the city.

* Water pollution, by the discharge of wastewater from commercial and industrial waste ( intentionally or through spills ) into surface waters ; discharges of untreated domestic sewage, and chemical contaminants, such as chlorine, from treated sewage ; release of waste and contaminants into surface runoff flowing to surface waters ( including urban runoff and agricultural runoff, which may contain chemical fertilizers and pesticides ); waste disposal and leaching into groundwater ; eutrophication and littering.

In the Midwest, oxidation ponds are used extensively for the treatment of domestic sewage from suburban areas.

This necessitated the construction of temporary sewage treatment facilities with an expected life from 5 to 15 Aj.

At the same time further expansion in the Red Bridge Subdivision required the construction of additional sewage treatment facilities.

An autonomous building is a building designed to be operated independently from infrastructural support services such as the electric power grid, gas grid, municipal water systems, sewage treatment systems, storm drains, communication services, and in some cases, public roads.

Some home sewage treatment systems use biological treatment, usually beds of plants and aquaria, that absorb nutrients and bacteria and convert greywater and sewage to clear water.

A big disadvantage of complex biological sewage treatment systems is that if the house is empty, the sewage system biota may starve to death.

The basic idea is to provide a small system with primary sewage treatment.

* Sewage: antibacterial treatment of general sewage by chlorine, ozone, ultraviolet light or other effective treatment before it enters the waterways or underground water supplies helps prevent undiagnosed patients from inadvertently spreading the disease.

Cities in developed nations made massive investment in clean water supply and well-separated sewage treatment infrastructures between the mid-1850s and the 1900s.

The municipality provides sewage treatment.

* Hyperion sewage treatment plant, Los Angeles ' oldest and largest wastewater treatment facility, located in Playa del Rey, California.

Specially-cultured microbes are used in the biological treatment of sewage and industrial waste effluent, a process known as bioaugmentation.

Well aware of the need to sanitize the area before and during the construction, engineers developed an infrastructure that guaranteed the treatment of potable water, sewage, and garbage that encompassed both the Canal Zone as well as the cities of Panama and Colon.

Under the Clean Water Act, EPA promulgated national standards for municipal sewage treatment plants, also called publicly owned treatment works, in the Secondary Treatment Regulation.