What is sewage treatment?
A process for the purification of mixtures of human and other domestic wastes; the process can be aerobic or anaerobic or both (facultative).
From an engineer: All organic material (poop) is "eaten" by microorganisms, leaving only minerals. Sewage treatment simply speeds the process. It is similar to burning, which leaves only ash (mineral). Note: the final step in sewage treatment is chlorination, which means essentially you could drink the liquid coming out of a sewage treatment plant and not get sick!! Yuk!
Down the sewers to the sewage treatment plant, just like when we flush the toilet or take a shower or brush our teeth or wash our hands. In many cities runoff from the streets also goes into the same sewers, but as heavy rains can cause the sewage treatment plant to overflow and allow untreated sewage out, there is often a separate sewage system for this that does not go to the sewage treatment plant.
Sewage travels from your home by pipes. The flow is due to the slope of the pipes so the sewage is essentially flowing downhill to a collection well or pit. The collected sewage is pumped from the pits into a forcemain which pressures the material to a sewage treatment plant. In rural ares or industrial parks sewage sometimes flows to a collection tank which is pumped out and into a truck which carries it to…
Alfred P. Bernhart has written: 'Treatment and disposal of waste water from homes by soil infiltration and evapo-transpiration' -- subject(s): Biological treatment, Purification, Rural Sewage disposal, Seepage, Sewage 'Treatment and disposal of waste water from homes' -- subject(s): Biological treatment, Purification, Rural Sewage disposal, Seepage, Sewage
About 300 Chinese cities, which is about 55.6%, do not have sewage treatment. Sixty-three of the cities are large enough to be classified as urban, and eight of them have a population of over 500,000. The cities that do not have treatment faciilities release the sewage directly into rivers and farmlands.