The Septic Tanks

THE SEPTIC TANKS

Septic tanks are a common kind of water detoxification, this article explains how a septic tank works, its capacities, and how septic tanks help humanity. Because we depend on water, it is very important to know about how water is treated, when it is possible drink it, and where water comes from.

The first thing that is important to know about the treatment of water, in this case the treatment by septic tanks, the capacities a septic tank has to detoxificate the water.

The exact function of a septic tank.

A sewerage drain field and a septic tank make up a small scale sewage treatment system.
The septic tank is basically a rectangular shaped underground for container wastewater. It is made of concrete and consists of little tanks that are divided in chambers. In other times the septic tanks were constructed of other types of materials.


The first chamber has double of volume of the second chamber, in the second chamber is where whole organic solid matter, such as sludge, settles.

The second chamber just purifies the wastewater.

Septic tanks collect wastewater from toilets, showers, sinks. Some of the collected wastewater stays down on the tanks floor. Particles are stabilized and are cleaned from the bottom of the tank. Some other particles stay settled, and some others may float at the top.

A septic tank should be constructed such that there is a maximum contact with the microorganisms, so the septic tank so can be enable to eliminate the sludge particles. The elimination of polluted particles is achieved by the overflow.
To maintain the production and the filtration of the septic tank, it is very important to take care not to throw garbage into the water, otherwise the septic tank could be damaged permanently.


The semi-purified water moves to the second chamber via the overflows that are constructed so that the upward motion of the water prevents the larger particles from moving to the second chamber. The treatment of the organic material continues in the second chamber.

The retention time in the second chamber is half that of the first chamber the water does not flow with larger particles of organic material, so the treatment process is done in less time than in the other chamber.

The rate of sludge generation in septic tanks is around 0.05 cubic yard every year for a person. Septic tanks need to be cleaned or emptied every few years so that there is enough reaction space for the microorganisms attack the wastewater.


The septic tank may be emptied every 5-7 years depending upon the amount of wastewater it processes. The tank is emptied using an “exhauster truck” that is coperated by professional personnel. Sludge removal helps clean the septic tank, ensure its proper use and treatment. The sludge that is removed from of the septic tank is deposited in water treatment plants, sanitary landfills, or sludge drying beds.

Septic tanks are common in communities that are far away from the cities. Septic tanks are common these areas because the have no connection to main sewage pipes provided by local governments or private corporations.
Septic Tanks are a good way of cleaning water, but they only are is necessary in those areas that do not have a connection to a center of purification.
The importance that society cares more about people who need to receive purified water, water being the ma simportante resource, we should take care on which we depend. Septic tanks are in common use in the city, but in the fields and isolated regions, is the only option they have to disinfect water.


1-http://www.johnstonsmith.co.uk/fact4.html#septic
2-http://www.csgwasteman.co.uk/Domestic/Learn/howSepticTanksWork.aspx
3-http://www.johnstonsmith.co.uk/fact4.html#septic