
	Where results make sense

Topic: Sewage treatment

Related Topics

Wastewater treatment plant

Industrial wastewater treatment

Sewage collection and disposal

Activated sludge

Waste water

Water purification

Imhoff tank

Sludge

Biochemical oxygen demand

Constructed wetland

Biosolids

Sewage

Autonomous building

Septic tank

	Sewage Treatment
		The rest receives some form of treatment to improve the quality of the water (which makes up 99.9% of sewage) before it is released for reuse.
		The simplest, and least effective, method of treatment is to allow the undissolved solids in raw sewage to settle out of suspension forming sludge.
		After chlorination to remove its content of bacteria, the effluent from secondary treatment is returned to the local surface water.
	users.rcn.com /jkimball.ma.ultranet/BiologyPages/S/SewageTreatment.html (370 words)

	Sewage treatment Summary
		The objective of the treatment is to produce both a clean wastestream (or treated effluent) suitable for discharge or reuse back into the environment, and a solid waste or sludge also suitable for proper disposal or reuse.
		Typically, sewage treatment is achieved by the initial physical separation of solids from the raw wastewater stream followed by the progressive conversion of dissolved biological matter into a solid biological mass using indigenous, water-borne bacteria.
		In the mechanical treatment, the influx (influent) of sewage water is strained to remove all large objects that are deposited in the sewer system, such as rags, sticks, condoms, sanitary towels (sanitary napkins) or tampons, cans, fruit, etc. This is most commonly done using a manual or automated mechanically raked screen.
	www.bookrags.com /Sewage_treatment (9058 words)

	Sewage - Wikipedia, the free encyclopedia
		Sewage collection and disposal is usually done via a system of sewer pipes (sewers) called a sewerage, and sometimes via a cesspool emptier.
		Sewage treatment is the process of removing the contaminants from sewage to produce liquid and solid (sludge) suitable for discharge to the environment or for reuse.
		Sewage collection and treatment is typically subject to local, state and federal regulations and standards.
	en.wikipedia.org /wiki/Sewage (181 words)

	Encyclopedia :: encyclopedia : Sewage treatment (Site not responding. Last check: )
		Sewage treatment is the process that removes the majority of the contaminants from waste-water or sewage and produces both a liquid effluent suitable for disposal to the natural environment and a sludge.
		To be effective, sewage must be conveyed to a treatment plant by appropriate pipes and infrastructure and the process itself must be subject to regulation and controls.
		In the mechanical treatment, the influx of sewage water is strained to remove all large objects that are deposited in the sewer system, such as condoms, sanitary towels (sanitary napkins) or tampons, cans, fruit, etc. This is most commonly done using a manual or automated mechanically raked screen.
	www.hallencyclopedia.com /Sewage_treatment (3541 words)

	Sewage treatment - Wikipedia, the free encyclopedia
		Sewage (or domestic wastewater) treatment is the process of removing contaminants from sewage.
		Sewage collection and treatment is typically subject to local, state and federal regulations and standards (regulation and controls).
		In the mechanical treatment, the influx (influent) of sewage water is strained to remove all large objects that are deposited in the sewer system, such as rags, sticks, condoms, sanitary towels (sanitary napkins) or tampons, cans, fruit, etc. This is most commonly done using a manual or automated mechanically raked screen.
	en.wikipedia.org /wiki/Sewage_treatment (4239 words)

	Sewage Treatment
		Treatment of sewage is essential to ensure that the receiving water into which the effluent is ultimately discharged is not significantly polluted.
		Following secondary (biological) treatment, the flow passes to final settlement tanks where most of the biological solids are deposited as sludge (secondary sludge) while the clarified effluent passes to the outfall pipe for discharge to a watercourse.
		Tertiary treatment is effected by sand filters, mechanical filtration or by passing the effluent through a constructed wetland such as a reed bed or grass plot.
	www.euwfd.com /html/sewage_treatment.html (1911 words)

	SD Worldwide Enterprises, Inc. / Sewage Treatment Units
		The key feature of biological treatment processes is that the microorganisms, mostly bacteria, are able to easily remove organic wastes from a liquid that would otherwise be very difficult and expensive to remove by any other means.
		The extended aeration treatment concept requires that the sewage treatment unit be large enough to retain and aerate the daily average flow for 24 hours in the aeration chamber.
		Sewage Treatment systems that do not employ the extended aeration treatment concept will require considerable drain off and disposal of sludge, because bacteria are not kept away from a food supply long enough to keep the bacteria population from increasing.
	www.sdworldwide.com /sewage2.html (713 words)

	Surfrider Foundation A-Z: Sewer Systems and Sewage Treatment
		Sewage collection and treatment systems, also sometimes referred to as sanitary sewer systems, collect and treat wastewater flowing from drains (toilets, sinks, showers, washing machines, and dishwashers) inside your house and businesses.
		Wastewater overflows from the secondary treatment clarifier to the outfall pipe or to tanks where it is stored for use as reclaimed water.
		Settled solids from the secondary treatment clarifier are combined with solids from the primary clarifier and are sent to large, closed tanks called sludge digesters.
	www.surfrider.org /a-z/sewage_treatment.htm (1456 words)

	SEWAGE DEFINITIONS : (Site not responding. Last check: )
		The issue of sewage disposal assumed increasing importance in the early 1970s as a result of the general concern expressed in the United States and worldwide about the wider problem of pollution of the human environment, the contamination of the atmosphere, rivers, lakes, oceans, and groundwater by domestic, municipal, agricultural, and industrial waste.
		During primary treatment, a large percentage of the suspended solids and inorganic material is removed from the sewage.
		Tertiary treatment is necessary when the water will be reused; 99 percent of solids are removed and various chemical processes are used to ensure the water is as free from impurity as possible.
	faculty.kfupm.edu.sa /CHEM/abetar/SEWAGE.htm (1427 words)

	Sewage Treatment Tanks - Sewage tanks - sewage pumps
		Sewage tanks, oil trays, tanks, Titan agricultural fuel oil storage, waste oil storage, underground tanks......
		A Continuous Aeration Plant (CAP), is designed to provide full treatment to crude sewage in a normal domestic environment.
		A septic tank is designed to provide what is known as primary biological treatment to crude sewage produced in a normal domestic environment.
	www.sewage-treatment-tanks.co.uk (329 words)

	The world's top sewage treatment websites
		The difference between incoming sewage and outgoing water is used to establish the sewage rate fees as a percentage of water use.
		The basic treatment is to mix "activated sludge" with the water, and bubble air through it so that aerobic bacteria can eat the dissolved solids.
		One of the earliest tertiary treatment plants is used by South Lake Tahoe, California and Stateline, Nevada to protect Lake Tahoe.
	www.websbiggest.com /wiki-article-tab.cfm/sewage_treatment (1865 words)

	Sewage Treatment (Site not responding. Last check: )
		The goal of wastewater or sewage treatment systems is to reduce the concentrations of organic pollutants in raw sewage such that the clarified waste can be discharged into natural bodies of water without disrupting the ecosystem.
		The sewage is continually circulated through trickle filters housed in "biotowers" or "activated growth units" where redwood slats are stacked and act as substrates for the attachment and growth of layers of aerobic, heterotrophic microorganisms.
		As an adjunct to the aerobic digestion phase of secondary sewage treatment, the sludge generated in the aeration and sedimentation tanks, material removed by the skimmer, and sedimented solids, and sludge generated at each treatment step are continuously collected from each of the sedimentation basins, combined and treated by anaerobic digestion processes.
	www.cas.muohio.edu /~stevenjr/mbi202/sewage202.html (739 words)

	History of Sewage Treatment
		Before the sewage farm was fully operational, George Stayton, an engineer with the sewerage branch of the Roads and Bridges Department and a man "of considerable English experience"[19] recommended that the sewage of the western suburbs of the city also be channelled onto the sewage farm.
		The reason that the sewage farm was such a nuisance, the report claimed, was because of the unsuitability of the area and the fact that it was grossly overloaded.
		The sewerage treatment paradigm has been continued through the ongoing training of new recruits to the profession, the protection of the profession's autonomy and the exclusion of outside interference in decision-making and the physical existence of millions of dollars of capital works that are a testament to that paradigm.
	homepage.mac.com /herinst/sbeder/sewage/history2.html (7705 words)

	Indiviual Home Sewage Treatment Systems (Site not responding. Last check: )
		The five parts of a sewage disposal system are: (1) the house plumbing, (2) the sewer line from house to septic tank, (3) the septic tank, (4) the septic tank outlet sewer, and (5) the final soil treatment unit, which may be a soil absorption unit or a lagoon.
		A sewage treatment system works best and can be more easily maintained if the soil treatment area is near the ground surface.
		For a resident on a small lot with no suitable soil treatment area, it may be necessary to discharge sewage into a holding tank from which the sewage is pumped and transported to a disposal area.
	www.ext.nodak.edu /extpubs/ageng/structu/ae892-1.htm (3389 words)

	Wastewater Treatment Principles and Regulations, AEX-768-96
		Sewage treatment is a multi-stage process to renovate wastewater before it reenters a body of water, is applied to the land or is reused.
		Treatment equipment such as bar screens, comminutors (a large version of a garbage disposal), and grit chambers are used as the wastewater first enters a treatment plant.
		The goals of sludge treatment are to stabilize the sludge and reduce odors, remove some of the water and reduce volume, decompose some of the organic matter and reduce volume, kill disease causing organisms and disinfect the sludge.
	ohioline.osu.edu /aex-fact/0768.html (1784 words)

	Individual Home Sewage Treatment Systems (Site not responding. Last check: )
		The five parts of a sewage disposal system are: (1) the house plumbing, (2) the sewer line from house to septic tank, (3) the septic tank, (4) the septic tank outlet sewer pipe, and (5) the final soil treatment unit, which may be a soil absorption unit or lagoon.
		This is equivalent to a 3-foot-wide trench because the biomat treatment area forms on the sock on the outside of the pipe and increases the infiltration area.
		A sewage mound is a special drainfield design used in locations with high water tables (within 2 to 3 feet of the surface) and slow infiltration rate soils.
	www.ag.ndsu.edu /pubs/ageng/structu/ae892-1.htm (10768 words)

	Johnstown Sewage Treatment Plant Tour (Site not responding. Last check: )
		Sewage enters the plant through a 60-inch pipe at the "head works" shown in the top center of this picture.
		The main items of secondary treatment involve biologic "digestion" of the items in the water and a clarifier tank at the end of the process that settles out remaining solids.
		The secondary treatment part of the plant was constructed adjacent to the primary treatment area.
	www.johnstown-redevelopment.org /plant.htm (773 words)

	On-Site Sewage Treatment Alternatives
		Effective sewage treatment prevents a variety of ailments that can be spread by exposure to pathogens that can be present in untreated sewages, and thus helps prevent disease.
		These include those used in the municipal treatment works that receive sewage discharged to public sewers in the nation's developed areas; conventional on-site sewage treatment that uses a septic tank and soil absorption field commonly used in rural areas; and the alternative on-site technologies that form the focus of this publication.
		In a once-through treatment system, the secondary effluent drained from the bottom of the filter unit is directed to effluent dispersal or further treatment (advanced treatment and/or disinfection), either by gravity or by pumping, depending on the situation.
	www.ext.vt.edu /pubs/waterquality/448-407/448-407.html (7764 words)

	Key Water Facts
		Flow of sewage to a works is measured to control and monitor treatment and to comply with consents.
		At some works where there is a high incidence of surface or storm water in the sewage (usually at works which serve older towns where the surface water readily enters the sewerage system) there is a need to separate the excess storm water flows out from the main sewage to be treated.
		The aim of the biological treatment stage is to purify the settled sewage by removing dissolved organic material, so that, after further settlement, in humus tanks, the effluent can be discharged to a watercourse.
	www.johnstonsmith.co.uk /fact16.html (1496 words)

	Garbage -- Sewage
		In conventional sewage treatment plants, bacteria remove up to 90 percent of biodegradable organic wastes before the sewage moves to a sedimentation tank, where remaining solids and microorganisms settle as sludge.
		Conventional sewage treatment is an expensive process that uses a lot of energy.
		As a taxpayer, you may be asked to fund short-term measures to cope with temporary crises, or to approve longer-term capital outlays for upgrades to your community's sewage system and treatment plant.
	www.learner.org /exhibits/garbage/sewage.html (293 words)

	Sewage Treatment Plants in the Hill Country
		The people of San Marcos rebuilt their sewage plant a few years ago and the San Marcos river downstream of the plant now has clear water that has not been seen in 50 years.
		Sewage plants are a catastrophe waiting to happen and we cannot afford to have spills like this over a karst aquifer formation or anywhere along a river being used for recreation and water supply.
		And while the last major sewage leak was fixed Friday night, the surface water treatment plant still is off-line.
	www.hillcountrywater.org /SewageTreatment.htm (1521 words)

	Water Technology - Reading Sewage Treatment Works
		Formally opened by the Environment Minister, Elliot Morley, on 18 January 2005, the new sewage treatment works on Reading's Island Road is one of the most technically advanced facilities of its kind in the UK.
		Reading's main sewage pumping station was also extensively refurbished in a separate part of a programme of works undertaken by Thames Water / Engenica to transfer the flows to the new site.
		The remediation programme was both extensive and challenging, involving the removal of nearly a quarter of a million tonnes of sludge and waste, while preserving local wildlife, protecting aquifers and minimising the disturbance to neighbouring residents and businesses.
	www.water-technology.net /projects/reading_sewage (1369 words)

	Sewage Treatment Tour
		The important concept is not the water treatment process itself, but rather the fact that most wastewater needs to get treated before it can be recycled or reused and that this treatment results in a sludge which must be disposed of.
		After the sewage has been screened it passes into what is called a grit chamber where sand, grit, cinders and small stones are allowed to settle to the bottom.
		After the sewage leaves the settling tank in the primary stage, it is pumped to an aeration tank where it is mixed with air and sludge loaded with bacteria.
	cwmi.css.cornell.edu /TrashGoesToSchool/Sewage.html (824 words)

Try your search on: Qwika (all wikis)