Septic tank aerators are a huge game-changer in the world of wastewater treatment options available to consumers. A traditional septic system will rely on anaerobic bacteria to help break down waste before dispersing it to the drain-field. With a septic aerator system, oxygen is introduced to the septic tank, promoting aerobic bacteria, which tends to be much more efficient at decomposing organic matter. This process results in a cleaner, more efficient septic system which helps to reduce the environmental impact produced and it will prolong the life of your drain field.
In this comprehensive guide, we’re going to go over everything from what you need to know about septic tank aerators: how they work, their benefits, installation, maintenance, and troubleshooting. As you finish up reading this post, you’ll have a much better understanding of why you should upgrade your septic system with a septic tank aerator and why it may be one of the single best investments for your home.
A septic tank aerator is a device which injects oxygen into your septic tank to promote the growth of aerobic bacteria. This type of bacteria is far more effective and efficient than anaerobic bacteria when it comes to breaking down waste, reducing sludge accumulation, and improving the overall quality of the effluent which is discharged into the drain field.
Septic tank aerators are most commonly used in aerobic septic systems. These aerobic septic systems are also known as ATUs (aerobic treatment units). These specific systems are great at treating wastewater much more efficiently than a traditional septic system. This efficiency and effectiveness makes ATUs an excellent choice for any properties with poor soil conditions, high water tables, or environmental restrictions.
The operation of a septic tank aerator involves introducing oxygen into the tank. Here’s how it all works:
The aerator will inject air into the septic tank, usually through a diffuser or air stones, creating bubbles which oxygenate the wastewater.
This oxygen-rich environment promotes the growth of aerobic bacteria, which break down organic matter in the wastewater much more quickly and effectively than anaerobic bacteria.
The resulting effluent will be clearer and contain fewer harmful contaminants. This effluent is much safer to discharge into the drain field in most cases.
Upgrading your conventional septic system to an aerobic system offers several advantages, both for your property and the environment:
Aerobic bacteria are up to 20 times more effective than anaerobic bacteria when it comes to breaking down organic waste. This level of efficiency leads to an overall better treatment of household wastewater and reduces the risk of clogs in your system.
Effluent produced by an aerobic system is much cleaner and contains fewer harmful contaminants. With this reduction in the level of contaminants, you’ll be helping to protect your local environment and reduce the risk of groundwater contamination.
Aerobic systems are ideal for properties with poor soil conditions, high water tables, or limited space for traditional drain fields. Aerobic systems may also meet stricter environmental regulations in areas where a conventional septic system is not allowed.
When functioning properly, aerobic systems produce fewer unpleasant odors than traditional anaerobic systems, making them comfortable for homeowners and neighbors alike.
Yes, the upfront cost is more than a conventional system, yet aerobic systems are becoming much more popular as, in addition to fitting in smaller lot-sizes, they provide security for local groundwater quality and the environment as a whole, particularly in areas with high-clay soil types.
Septic tank aerators come in various designs, each tailored to specific needs and system configurations. Here are the most common types:
Linear diaphragm aerators use a set of diaphragms to push air into the septic tank. These aerators are compact, energy-efficient, and operate quietly.
Best For: Residential systems with moderate wastewater volumes
Positives: Quiet, low energy consumption
Negatives: Limited capacity for high-volume systems
Rotary vane aerators use rotating vanes to generate air. Rotary vane aerators are more powerful than diaphragm models and suitable for larger systems.
Best For: Commercial or large residential systems
Positives: High airflow, durable design
Negatives: Noisier and more expensive to operate
Submersible aerators are placed directly in the septic tank and release air bubbles directly into the water with centrifugal force. Submersible aerators are extremely quiet and maintenance free.
Best For: Small or residential systems
Positives: Easy installation, effective oxygen distribution
Negatives: These models are more expensive than many other aerator types.
Shaft-Style aerators are suspended over the treatment compartment and rotate a long, hollow shaft reaching down into the treatment unit at high speeds. The specialized tip at the end of the shaft draws air down through the motor and the resulting centrifugal force throws the air bubbles out into the water, while creating a rotating current in the treatment compartment.
Best For: Advanced aerobic treatment units
Positives: Superior mixing and aeration
Negatives: Higher upfront cost and frequent maintenance needs
Proper and proactive maintenance is crucial to ensure the longevity and effectiveness of your aerator. Here are some helpful tips:
Remove and clean the diffuser thoroughly and regularly to prevent clogging and ensure efficient airflow.
Inspect the aerator pump for any signs of wear and tear, damage, or overheating. Replace worn parts as needed.
Ensure the power supply and wiring are secure and free from any forms of damage.
Check the quality of the effluent periodically. Clear, odorless effluent indicates the system is working properly.
Hire a septic professional to perform maintenance annually (or as required by your local agency) and address any issues if they are discovered during the servicing.
Despite septic tank aerator’s efficiency, they can experience issues from time to time. Here’s how to troubleshoot some of the most common problems:
Cause: Power outage, blown fuse in control panel, or faulty pump
Solution: Check the power source, replace the fuse, or repair/replace the pump
Cause: Clogged diffuser, broken air line, torn diaphragms
Solution: Clean or replace the diffuser and inspect the air lines for any damage, disconnect your pump from the air line to your tank, and check the outlet pressure.
Cause: Worn bearings or loose components in the pump
Solution: Replace the pump.
Cause: Sludge buildup or insufficient oxygen levels
Solution: Varies; Check for rainwater infiltration, investigate household activities/water usage. Pump out the tank and ensure the aerator is functioning correctly.
The cost of a septic tank aerator depends on its type, size, and features. Here’s a general breakdown:
• Linear Diaphragm Aerators: $200–$500
• Rotary Vane Aerators: $500–$1,500
• Submersible Aerators: $800–$1,200
• Jet Aerators: $500 –$800
• Installation Cost: $500–$3,000, depending on system complexity
• Maintenance Cost: $100–$300 annually for routine servicing
A septic tank aerator is an integral component for any aerobic septic system. A septic tank aerator has the ability to improve wastewater breakdown, reduce sludge accumulation, and thoroughly clean effluent. When the septic tank aerator is properly installed and maintained, it will not only protect your property, it will also reduce the environmental impact, leading to environmental sustainability in your immediate area.
Are you ready to take your septic system to the next level? If so, you’ll want to contact us or shop now using the button below. We’ll be sure to help you with your septic tank aerator needs and have you running a cleaner, more efficient system in no time. We look forward to working with you soon!
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