Septic Tanks

Posted on: August 16, 2018, by :

Why Do We Need Septic Tanks?

Septic tanks are specially constructed chambers underground where sewage and human waste is collected from our homes. The septic system is located close the building; it is well-constructed and hidden from view. If you do not know what to look for, you may not be able to easily locate the position of septic tanks because the pipes and chambers have been well hidden during construction. Understanding the importance of septic tanks, and how they function will help everyone use the toilets properly to prevent blockage or damage to the system.

The septic system is designed to naturally break down human waste without producing an offensive odour that can pollute the environment. This system can last for many years if properly used.

How Septic Tanks Work

Every building that has a toilet needs septic tanks.  When a toilet is flushed, the waste is channelled into the main chamber in the septic system. Here the solids gather at the bottom of the tank separated from sludge and water that forms a layer above. Then the bacteria start the process of anaerobic decomposition. A drain pipe allows wastewater to drain into another chamber called the drain field. A filter is installed on this pipe to prevent solids from entering the drain field. The water undergoes a filtration process through gravel and sand in the drain field. In some places, the design plan features a system where the filtered water from septic tanks is channelled to enrich the soil in nearby gardens. If this is not the plan, the filtered water leaves the septic system by seeping through pipes into the surrounding ground.

The Construction of a Septic Tank

It is common to find septic tanks constructed from concrete, fiberglass or PVC. The most important factor to consider during construction is the prevention of leaks from the system. Some septic systems feature three chambers, but you will mostly find the two chamber septic systems. The size depends on the estimated volume of waste that will be channelled into the system for decomposition, so the measurements vary. Constructing the septic tank is a crucial process; well-constructed septic designs work perfectly and last for many years.

The concrete septic tanks have 4-inch thick walls. The chambers are built and connected with 4-inch PVC pipes to allow wastewater move from one part of the system to another. The waste is channelled from the building into the septic tanks through sloped pipes that make it easy for waste to flow freely into the first chamber. There will also be vents and manholes in the septic system.

To get it done right, engage the services of a reputable plumbing contractor who has handled similar jobs in the neighbourhood. Septic tanks provide a way to handle human waste for many years without any problems or danger to health.

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