DeLoach Industries Blog

Mastering Industrial Water Treatment: Forced Draft vs. Induced Draft Degasification Towers

Written by Anthony DeLoach, President | Oct 17, 2025 5:39:18 PM

Industrial water treatment is a cornerstone of efficient and sustainable industrial operations. The presence of dissolved gases, particularly carbon dioxide (CO2) and hydrogen sulfide (H2S), can wreak havoc on equipment and processes. Understanding how to effectively manage these gases through degasification is crucial. In this comprehensive guide, we'll explore the mechanics and benefits of forced draft and induced draft degasification towers, empowering you to make informed decisions for your water treatment systems.

Understanding the Need for Degasification

What is Decarbonation?

Decarbonation is the process of removing CO2 from water, a critical step in maintaining pH balance and preventing corrosive chemical reactions. Excess CO2 in water increases acidity, jeopardizing equipment and process integrity.

The Role of Degasification

Degasification extends beyond CO2 removal; it targets various dissolved gases, including corrosive gases like H2S. These gases not only cause corrosion but can also compromise safety and process efficiency. Implementing a robust degasification strategy is essential for long-term industrial success.

Aeration Systems: Key to Effective Degasification

Introduction to Aeration Towers

Aeration is a pivotal process in both decarbonation and degasification. By introducing air into the water, aeration allows dissolved gases to escape into the atmosphere. Two primary aeration tower designs—forced draft and induced draft—offer distinct advantages.

Forced Draft Aeration Tower

In forced draft systems, the blower is strategically placed at the tower's base. This position enables effective air introduction and gas removal, safeguarding equipment from corrosive gas exposure. Industries dealing with high levels of H2S often prefer this option to protect sensitive components.

Induced Draft Aeration Tower

Induced draft towers feature a blower mounted on top, pulling air through the system. While space-efficient, they pose a risk when handling corrosive gases, which could damage blower components. However, for CO2-only degasification needs, induced draft towers offer a viable, efficient alternative.

Choosing the Right Degasification Tower

Factors to Consider

When selecting between forced and induced draft towers, consider the specific gas composition in your water. If corrosive gases like H2S are present, a forced draft system is advisable. For CO2-focused applications, induced draft systems are effective and economical.

Example: Industry-Specific Applications In the food processing industry, where maintaining pH levels is crucial, a forced draft tower might be ideal for preventing equipment corrosion. Conversely, a semiconductor manufacturer focused on CO2 removal could benefit from the space-saving design of an induced draft tower.

Benefits of Optimal Aeration and Degasification

Enhanced Water Quality and Equipment Longevity

Effective degasification improves water quality, directly impacting product quality and process efficiency. Additionally, protecting equipment from corrosive gases reduces maintenance costs and extends operational life.

Environmental and Energy Advantages

Aeration systems release unwanted gases harmlessly into the atmosphere, minimizing environmental impact. Moreover, well-designed systems offer energy efficiency, aligning with sustainability goals and reducing operational costs.

Investing in the right aeration and degasification system is crucial for safeguarding your industrial processes. Whether you opt for a forced draft or induced draft tower, understanding the intricacies of each can lead to significant operational improvements. For tailored advice and solutions, visit DeLoach Industries. Our experts are ready to assist you in designing a system that ensures sustainable and efficient water treatment for your facility.

Want to learn more about why selecting the right type of degasifier is crucial for your industry?

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