How the Mound Septic System Works  

  • Author: Fazal Umer
  • Posted On: November 23, 2023
  • Updated On: November 23, 2023

If you’re a homeowner, chances are you’ve heard of septic systems. These systems are responsible for managing your household wastewater and have proven to be an essential part of any home.

One type of septic system that has recently gained popularity is the mound septic system. In this article, we’ll delve into the details of this innovative system and explain how it efficiently treats and purifies the wastewater from your home.

Source: Wikimedia Commons

Treating and Purifying Wastewater

The primary goal of the mound septic system is to treat and purify wastewater from your home, starting in the septic tank.

A Three-Layered System

Inside the septic tank, the wastewater undergoes a separation into three distinct layers:

  • Scum Layer –  this is the top layer, containing lighter solids, oils, and fats. It acts as a barrier for the unwanted elements.
  • Effluent Layer – the middle layer, which is the main focus. It holds the water and dissolved substances, aiming for purification.
  • Sludge Layer – at the bottom, we find the sludge layer, made up of solid particles that settle over time.

Activating the Pump and Managing Effluent Flow

When the level of effluent in the septic tank rises above a certain point, the pump control float activates, triggering the pump to regulate water flow.

Pumping to the Drainfield

The water now moves into the pump chamber in small, controlled doses. From there, it flows through pipes and gets evenly distributed in the drainfield.

Drainfield Treatment

The next step in the process is the drainfield. Here, sand and soil purify the wastewater naturally. Harmful viruses and bacteria are eliminated in the process. 

The mound septic system works as a well-ordered sequence. It begins with separating scum, effluent, and sludge in the septic tank. Then the effluent is evenly distributed in the drain field. Each step plays a crucial role in ensuring safe wastewater disposal.

The pump controls the wastewater flow, and the drainfield acts as a natural filter to neutralize harmful components. Technology and nature work together to create a harmonious system that protects your home and the environment.

Advantages and Disadvantages

The mound septic system is good for protecting the water table and doesn’t cost much to install because it only requires excavation, pipe installation, and filters, which eliminates the need for expensive repairs. 

However, the mound left after installation can be an eyesore because it can be up to five feet tall. It also needs more space than other septic systems. Because it’s closer to the surface, it may produce odors if waste leaching is insufficient, so odor management is important.

To sum up, the mound septic system operates on a simple yet efficient principle. It converts your household wastewater into a treated and safe liquid. 

The next time you use water at home, take a moment to appreciate the systematic process happening behind the scenes, all thanks to this septic system.

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Author: Fazal Umer

Fazal is a dedicated industry expert in the field of civil engineering. As an Editor at ConstructionHow, he leverages his experience as a civil engineer to enrich the readers looking to learn a thing or two in detail in the respective field. Over the years he has provided written verdicts to publications and exhibited a deep-seated value in providing informative pieces on infrastructure, construction, and design.