It flows by gravity to what's called a lift station, where it collects and gets pumped to either another lift station or eventually to the water treatment facility. From there the sewage is processed, undisolvable solids are removed, the water is treated with chemicals to kill bacteria and then is either discharged (typically a stream or lake) or is land applied through pumps and spray systems.
2007-07-26 07:57:23
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answer #1
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answered by Jeffrey S 6
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Yes, there are big pipes. The pipes are routed and their depth under the ground is adjusted so that the sewage flows down hill under the force of gravity. If needed, there are lift stations where the sewage is pumped up to a higher level and transferred to other pipes where it flows downhill again. At the sewage treatment plant, it is pumped up to the surface for treatment. Since the pipes are sealed and since each house has a vent pipe that extends above the roof like a chimney, the odor is dissipated. Sewage treatment plants have ways to control the smell, but they are not always completely successful.
Sewage in pipes is not usually pumped under pressure. When it is, the pipe is called a force main.
2007-07-26 12:05:17
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answer #2
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answered by EE68PE 6
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Most sanitary sewer systems are gravity fed meaning they just flow down grade. At points along the line, there may be lift-stations to raise the sewage up to a higer elevation to allow more downgrade flow. In locations where gravity systems cannot be used or are impractical because too many lift-stations are required, they use what is called a force-main which moves the sewage under pressure similar to the way water is moved. These systems cannot be easily tapped into.
2007-07-26 17:32:54
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answer #3
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answered by Anonymous
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Combine the previous answers to get whe whole story.
The flow from the toilets , the lavatory sinks, bath tubs, laundries, etc. drain down into that pipe under the house connected to the main sewer line under the ground next to the street This flow is by gravity. This sewer line is pitched downdard so that flow continues by gravity as far as can be reasonably achieved. Sometimes several of these lines are joined into a larger "header" and flow continues by gravity.
Sewer lines, like water lines are sealed with mechanical joints. Certain venting arrangements prevent the build- up of pressuer in the lines so the gasses stay witnin the system.
These among other headers connect to underground receivers where electrically powered "lift pumps" send the seweage on to the treatment station.
Prior to the 1950-60's many minicipal sewers just ran into the rivers. Many still do, depending on where you live.
Connected to the line under your house is a vent pipe which extends up through the roof. This prevents a vacuum from forming which would inteferer with the gravity flow.
Built into the toilet bowl and attached as part of the drain pipes below the sink, the tub,, the shower, etc. are "P" traps which create a water seal to prevent sewer gasses from coming back into the dwelling. That main vent as well as other smaller ones keeps the water from being sucked out of the traps.
2007-07-26 12:31:09
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answer #4
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answered by Bomba 7
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It gets flushed to the sewage plants by water and gravity, yes there is a big pipe that runs somewhere near your house and a smaller pipe that is attacked to your toilet is join to this bigger pipe which in turn is attach to a bigger sewer that will go to the plant.
2007-07-26 11:57:43
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answer #5
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answered by cleocat 5
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Lift stations (pumps) pump the sewage to the treatment plant. There are many of these needed to move the sewage the number of miles or kilometers to the plant.
2007-07-26 11:55:54
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answer #6
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answered by Broadcast Engineer 6
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Wastewater processing is a very involved process. To your question, it goes down the pipe to a large pipe, to larger pipes, and to the sewage plant. For most systems, there will be pump stations to move the materials from lower elevations to higher. For details, pictures, and diagrams, see the references.
2007-07-26 12:51:24
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answer #7
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answered by Peter Boiter Woods 7
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engineers use gravity when designing these pipes. when you flush, the waste goes down, under your house and meets up with the main sewage line. since it (and other houses' waste around your area) was moving downward due to gravity, it propels the poo. this eventually gets to the waste plant where it is processed.
this is a very very simple answer to your question. im sure its more complicated than that
2007-07-26 11:57:33
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answer #8
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answered by I am logged in, therfore I am. 2
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Flows down hill through the pipes, search web for sewage plants
2007-07-26 11:55:46
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answer #9
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answered by Grant d 4
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it's pumped through a system of pipes called sewers,till it gets to a sewerage farm.
2007-07-26 12:28:24
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answer #10
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answered by biker 2
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