You waste a lot of water daily in flushing toilets, bathing, washing hands, washing utensils and in many more things. But what happens to this waste water? This water further goes to a septic tank where it is treated to be used further.
A septic tank collects waste water from toilets, showers, sinks, etc. A septic tank is simply a rectangular shaped, big concrete or steel tank that is buried in the yard. The tank might hold 1,000 gallons (4,000 liters) of water. Waste water flows into the tank at one end and treated water leaves the tank at the other.
Sewer line is the line through which your home’s waste water reaches the septic tank. After receiving this waste water, septic tank treats it and divides it into different layers.
Septic tank is divided in three layers. Solid waste exists in two forms – a top layer of grease referred to as scum and a bottom layer of solids more commonly known as sludge. In a septic tank, the liquid that is separated from solid waste is called effluent and forms the middle layer. It contains chemicals like nitrogen and phosphorous that acts as good fertilizers. The bacteria present in tank breaks down the waste to make it less harmful.
The treated waste water is then directed to a drain field, where the impurities that still exist in water get decomposed naturally. The water is taken up by the plant root system or it may even become a part of the groundwater.
The rate of filtration and absorption of water is little slow. This rate is directly proportional to ground size. If the ground is big, water will be absorbed faster and vice-versa. At places, where the soil is not very porous, the drain field has to be much bigger.
A septic plant should generally be large in size as a tank with less capacity allows the waste water to enter the drain field too quickly. In this case, the solid particles that were supposed to settle into the tank are accidentally carried into the drain field. If this happens, your drain field can become flooded with untreated waste water and can cause serious health risks to you and the environment.
Waste water from your house travels by gravity to the septic tank and from septic tank to a drain field. To maintain the septic tank for long time, stop dumping solid waste in the drain. Be little careful and save your environment.
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