Diffused Reservoir Aeration Systems

How Diffused Aeration Works

Diffused aeration uses strategically placed air diffusers on the reservoir bed. A shore-mounted compressor pumps air through weighted tubing to these diffusers, releasing fine bubbles that rise through the water column. This process:

• Increases dissolved oxygen levels throughout the reservoir
• breaks down thermal stratification to stabilise water temperature
• Encourages natural circulation from bottom to surface
• Supports aerobic bacteria to break down organic matter

The result is balanced, oxygen-rich water with reduced risk of algae, odours, and sludge build-up.

Benefits of Diffused Aeration for Reservoirs

• Cost-Saving Operation - Low energy consumption and minimal maintenance compared to other aeration methods.
• Unobtrusive Design - The system is virtually invisible at the surface making it ideal for sites where visual impact must remain minimal.
• Improved Water Quality - Enhances conditions for aquatic like, reduces harmful gases, and helps control algae growth naturally.
• Long-Lasting Performance - Built from robust, high-grade materials for reliable year-round operation.

Applications of Diffused Aeration in Reservoirs

• Potable water storage reservoirs
• Agricultural irrigation reservoirs
• Industrial process water reservoirs
• Recreational and fishing reservoirs

Wherever clean, oxygen-rich water is required, our aeration systems provide a trusted solution.

Expert Supply, Installation & Maintenance

At Heathland Fountains and Aerators, we don’t just supply aeration equipment—we provide a full service. Our team can design, install, and maintain your diffused reservoir aeration system, ensuring long-term performance and efficiency. We also offer bespoke solutions tailored to the size, depth, and requirements of your reservoir.

Why Aerate Your Reservoir?

Reservoirs are vulnerable to water quality issues, especially during warmer months. In summer, many reservoirs experience thermal stratification—a process where water forms distinct layers.

• Surface layer (epilimnion): Warm, oxygen-rich water.
• Bottom layer (hypolimnion): Cool, oxygen-depleted water.
• Thermocline: A density barrier that prevents these layers from mixing.

Without circulation, oxygen becomes trapped at the surface while the bottom layer stagnates, creating poor conditions for aquatic life and encouraging harmful gas build-up.

How Diffused Aeration Solves the Problem

A diffused aerator releases millions of fine bubbles from the reservoir bed. As the bubbles rise, they lift cooler, oxygen-depleted water to the surface where it mixes and becomes naturally oxygenated. This upward circulation breaks down the thermal layers, balances water temperature, and replenishes oxygen throughout the entire water column.

This process also:

• Releases trapped toxic gases below the thermocline.
• Creates aerobic conditions at the reservoir bed.
• Supports beneficial bacteria that naturally break down excess nutrients.
• Reduces the risk of algae blooms and noxious aquatic weeds.

The result is a stable, balanced habitat where aquatic life can thrive.

Benefits of Diffused Aeration in Reservoirs

• Full Water Column Circulation – Eliminates stratification, ensuring consistent oxygen and temperature from top to bottom.
• Healthier Irrigation Water – Oxygen-rich water supports stronger root development in crops and plants.
• Natural Waste Breakdown – Aerobic bacteria flourish, accelerating the breakdown of organic matter and reducing sludge.
• Winter Protection – Running aerators in freezing conditions keeps sections of the reservoir ice-free, allowing gases to escape and maintaining oxygen for fish and wildlife.
• Wildlife Support – Open water areas provide essential access for birds and animals during harsh winter conditions.

Prefer a surface-mounted option? Discover our Floating Reservoir Aeration Systems, designed for flexible installation and effective oxygenation.