Is named sewage to that type of water that is contaminated with fecal substance and urine, which precisely come from organic waste from both animals and humans.
Waters contaminated with fecal waste and urine
The denomination of black waters makes sense because precisely the coloration that they present is black.
The main motivation that will lead these waters to undergo special treatment are the pathogens found in them from human excretion that can cause disease and infection if not treated correctly.
Treatments to which they undergo to extract the polluting agents
For such a situation is that the sewage also known as sewage, wastewater, sewage, Yes or yes demand a careful treatment system whose main mission will be to channel them, treat the aforementioned residual content, and of course dislodge them to avoid the major problems they cause: environmental contamination and the proliferation of viruses.
There are various types of treatment, which are closely linked to the contamination that exists.
In the case of organic and inorganic matter in suspension, it is common to use sedimentation and filtration.
On the other hand, for dissolved matter, biological procedures such as chemical oxidation are usually used.
Sedimentation removes that solid but fine matter, whether organic or inorganic, from the water, passing through a device in which the materials are retained and then eliminated.
And for its part, filtration will separate the suspended solids from a porous medium that precisely retains the solids and allows the liquid to pass through.
It should be noted that this type of water circulates through what is known as sewer, collector or sewer, which integrates the public sewer , built underground, generally in those most important avenues and streets.
Sewers: operation, care and relevance for the quality of life of the population
The sewer consists of a tube to which the water with fecal waste is sent from the houses; They are installed underground and connected directly to the household pipes in order to achieve the evacuation of the sewage in these pipes and their compliant exit.
On the other hand, the sewers are linked to a main collector that makes it possible for these waters to be transferred to a treatment plant or to the place where they will finally be discharged.
The installation must be carried out with a slope design so that the waters flow accordingly, however, said inclination should not be very pronounced because if the fluids run at high speed, the erosion of the sewers could occur.
The joints must be hermetically sealed to prevent the infiltration of rainwater and to prevent any other type of infiltration.
A recurring problem that affects the sewers is that they are blocked by the elements or objects that people tend to throw into them recklessly, of course, such as: rags, diapers, cottons, condoms, feminine pads, cigarette butts , plastic containers, among others.
So, attentive to this situation, it is essential that you become aware of it and take care not to throw out any element that obstructs the proper functioning of the sewers; it is important that children are instructed not to do so.
We must say that unfortunately in many parts of the world there are still families that do not have a sewer system in their homes.
This incredible but real state of affairs especially affects low-income families, the lack being an absolute responsibility of the state.
In most cases we can identify corruption and laziness of the political leadership as causes of the lack of sewers in homes.
The sewer service is a substantial tool to guarantee the quality of life of a population, for example, the lack of this is inadmissible.
In the province of Buenos Aires, in Argentina, it is the unfortunate reality that many Buenos Aires residents who live in poor neighborhoods live, while this issue has been one of the workhorses of the current ruling party's campaign against the opposition that ruled decades la province and did not finish building the sewers for the entire population for the reasons stated above.
