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Septic graves. ABSORPTION
WELL. They can replace or to be complementary the oxidation field. It
consists more or less of excavations of a diameter and variable depth In these
the water infiltrates by walls and floor that will have to be taken permeable,
is recommended to fill of gravel to the height approximated of 1m to obtain a
good water distribution to the bottom." The absorption field allows to the final
treatment and the distribution of black waters. A conventional system consists
of perforated pipes surrounded by materials, such as it burdens and pieces of
rim covered with geotextil fabric and argillaceous ground. In order To treat
black waters, this system depends much on the ground where the microorganisms
help to eliminate the organic matter, solids and the nutrients that remain in
the water. Whereas the effluent flows continuously towards the ground, the
microbes that digest the components of black waters Form a biological layer. The
layer reduces to the movement of the water by the ground and aid to avoid that
the area underneath the layer is saturated. The water must run by the ground
that is not saturated so that the microbes that are there and in the layer can
ingest the wastes and the nutrients of the effluent. The turf that also covers
the system with absorption field uses the nutrients and the water to grow.
Treatment. If it is used appropriately, the system of absorption field and
the septic tank will work well. The system commonly reduces two proportions used
to measure the contamination: the biochemical demand of oxygen, which is reduced
in more of the 65 percent; and the total of solids in suspension, which is
reduced in more of the 70 percent. The oils and the fats normally are reduced
between a 70 and 80 percent. The use of a septic tank for the residual water
pre-cure also causes that other systems of secondary treatment are more
effective. The effluent of the septic tank is smooth, consistent, easy to
transport and can easily deal with aerobics processes (with free oxygen) or
anaerobic (without free oxygen).
Design. So that a septic grave works successful, it must have the size and
the appropriate construction and have a hermetic design with a stable structure.
Size of the grave: The size of the septic grave that one needs will depend
on the number of firing chambers of the house, the number of people who live in
the house, the number of square feet of the house and if they are used or no
apparatuses of the bath or the kitchen that saves water. For example, a house of
three firing chambers, supposing that four people live in her and who does not
have apparatuses that save water, would need a tank 1,000 gallons. |
