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Aerobic Vs. Anaerobic Sewage Treatment Systems
Aerobic Vs. Anaerobic Sewage Treatment Systems
Jan 21,2024

Aerobic Vs. Anaerobic Sewage Treatment Systems

Sewage treatment is a vital waste management process that ensures the safe disposal of wastewater and protects your premises and the environment. If you have a septic tank installation project lined up, there are two common methods you should know for sewage treatment: aerobic and anaerobic systems. While both remove pollutants and pathogens from sewage, they operate differently and offer distinct advantages and disadvantages. As a trusted septic company, Rooter Man can determine the most suitable system for you. Let’s look at the distinction between both sewage treatment systems to help you decide.


Oxygen Requirement

The major difference between these sewage treatment systems is their oxygen requirements. Aerobic systems rely on oxygen for the biological breakdown of organic matter, as it promotes the growth of aerobic bacteria. These bacteria consume and break down organic pollutants, producing less sludge and cleaner effluent. This means you don’t have to worry about frequent septic tank pumping sessions. 

Anaerobic systems function optimally in an oxygen-depleted environment. These systems use bacteria that can survive without oxygen, converting organic matter into methane and carbon dioxide. Before undertaking a septic tank installation project, consult a professional to check the oxygen levels. This will help to decide between aerobic and anaerobic systems.

Treatment Efficiency

Another difference is their efficiency. Aerobic systems are more efficient at breaking down organic matter and removing pathogens from sewage. The oxygen in the system supports various microorganisms that effectively degrade pollutants, producing low levels of effluent and reducing the frequency of septic tank pumping sessions. 

Anaerobic systems may not rely on oxygen, but they are still effective. In addition, anaerobic systems produce a larger volume of sludge, prompting more frequent septic tank cleaning and maintenance. We recommend working with a trusted septic company to determine the desired options between the two systems based on treatment efficiency and specific goals.

Energy Consumption

Energy consumption is a significant factor when considering sewage treatment system. Aerobic systems require energy to maintain an oxygen-rich environment, which is essential for bacterial growth and pollutant degradation. This energy is used to power aeration equipment, such as blowers or diffusers, to deliver oxygen to the sewage. These systems increase the risk of a malfunction, frequent septic tank repair calls, and high operational energy costs. 

With anaerobic systems, they are less energy-intensive because they do not rely on oxygen. However, anaerobic systems may require energy for mixing and pumping sewage and for handling and treatment of the methane gas produced as a byproduct. The choice between the two systems often depends on energy availability and cost considerations, as well as environmental effects.

Biogas Production

One of the unique advantages of anaerobic sewage treatment systems is their ability to generate biogas, especially methane. You can harness biogas and use it as an energy source for various applications, including heating, electricity generation, or even vehicle fuel. Anaerobic systems offer a sustainable way to recover energy from sewage treatment, reducing environmental effects and costs associated with septic tank repair and maintenance. 

Aerobic systems do not produce biogas, and their energy requirements are met through conventional sources, such as electricity from the grid. Therefore, the choice between aerobic and anaerobic systems may involve considering the potential for biogas production and associated benefits.

While both sewage treatment systems play crucial roles in wastewater management, they have differences to acknowledge. Contact us today at Rooter Man and schedule a consultation with our experts. We provide top-notch plumbing services, including septic tank cleaning, maintenance, and installation, at friendly rates.

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