Modern sewage treatment plants place extreme demands on mechanical drive systems and selecting the right drive technology is critical to achieving reliable, continuous operation in clarifiers, grit chambers and grease removal systems.

Modern sewage treatment plants operate in some of the harshest mechanical environments. Constant moisture, abrasive solids, corrosive gases and variable loads place extreme demands on drive systems used in clarifiers, sand traps and grease filter separators. Reliable, purpose-built drive technology is critical to ensuring stable and continuous plant operation. RUD’s TECDOS Drive Technology has been developed specifically to meet these challenges in sewage and wastewater treatment applications.

The Role of Drive Technology in Clarifiers

Clarifiers are large settling tanks that use gravity to separate solids from liquids. They include large scraper bridges that rotate continuously to collect settled sludge and move it into collection hoppers. Surface skimmers remove floating scum from the water surface.

The drive system powering this slow moving, high torque mechanism must operate with minimal vibration in outdoor installations exposed to sun, rain and dust.

TECDOS drive systems utilise high-performance round steel chains as the primary transmission mechanism, replacing conventional gear racks or friction-based drives. The chain based technology ensures consistent power transfer, calibrated movement and superior resistance to shock loads. The fixed head PI-GAMMA drive configuration ensures smooth and stable operation of scraper bridges under varying load conditions, contributing to longer service life and reduced operational disruptions.

Unlike traditional open gear drives, TECDOS components are designed with weatherproof construction and corrosion resistant materials, ensuring trouble free operation in permanently wet and chemical environments. This makes TECDOS ideal for circular and rectangular clarifiers in council sewage and industrial wastewater plants.

TECDOS® Systems

At the core of every TECDOS solution is a quenched and tempered round steel chain. RUD chains are engineered for exceptional dynamic strength and wear resistance, offering long service life in heavy duty drive applications.

Each chain is traceable through standard 3.1 inspection certificates, supporting material quality assurance and process safety compliance.

TECDOS systems are supported by engineered components designed for strength, alignment and serviceability, including:

• High-performance chain wheels for controlled power transmission
• Chain guides to ensure precise alignment and low wear
• Special chain end attachments designed to transfer 100% of operating forces
• Flexible attachment points that accommodate structural tolerances and alignment variations

This modular TECDOS drive system can be adapted for both new installations and retrofit projects in existing sewage treatment plants.

Benefits of TECDOS Drives in Clarifiers

The key advantages of TECDOS technology in clarifier applications include:

• High reliability in continuous operation - Clarifiers typically operate 24/7, and TECDOS chains and drive heads are engineered for continuous service, reducing unplanned downtime
• Smooth, vibration free rotation - The PI-GAMMA fixed head drive design ensures uniform power transmission, reducing mechanical stress on scraper bridges and structural components
• Low maintenance requirements - Wear resistant materials and protected drive elements reduce inspection frequency and component replacement
• Resistance to weather and corrosion - Critical components are designed to withstand dirt, moisture and corrosive substances commonly found in wastewater treatment environments

Applications in Sand Traps (Grit Chambers)

Sand traps, also known as grit chambers, are designed to remove heavy inorganic particles such as sand, gravel and small stones from incoming wastewater. These highly abrasive materials cause rapid wear in conventional mechanical drives.

TECDOS OMEGA drive systems are well suited for grit removal equipment. With a chain loop angle of up to 180 degrees and options for fixed or mobile drive arrangements, the system delivers reliable power even under high resistance load conditions. This delivers efficient grit removal, protects downstream equipment and reduces overall plant lifecycle costs.

Advantages for Grease Filters and Scum Removal Systems

Grease filters and scum removal mechanisms primarily handle floating fats, oils and grease (FOG). These substances are sticky, chemically aggressive and difficult for conventional drive components. TECDOS drives eliminate many slip and corrosion related problems through a chain based positive drive principle. Because power is transmitted mechanically via high strength steel chains rather than friction-based systems, performance remains stable even when exposed to oily and greasy residues.

This reliability enhances overall process stability and enables treatment plants to maintain compliance with discharge regulations.

TECDOS Advantages for Treatment Plant Operators

Beyond individual applications, TECDOS drive technology supports broader operational goals of modern sewage treatment plants:

• Reduced unplanned downtime through durable and fatigue-resistant components
• Improved plant availability through simplified inspection and maintenance routines
• Safe operation supported by robust mechanical design and proven industrial standards
• Flexible integration with motors from different manufacturers

The ability to deliver complete system solutions, including motors and customised mounting arrangements, simplifies project engineering and installation.

Why Chain-Based Drives Are Replacing Traditional Systems

Traditional clarifier and scraper bridge drives have often relied on rack-and-pinion systems or friction wheels. While these solutions can be effective under ideal conditions, they are vulnerable to accelerated wear, slippage and misalignment in real world wastewater environments.

TECDOS round steel chain drives provide positive mechanical engagement with proven, long-term performance. This is particularly critical in large diameter clarifiers, where uniform power distribution and high reliability are essential for process efficiency.

The Final Word

TECDOS Drive Technology is a modern, purpose-built solution for the mechanical challenges of sewage treatment plants. When used in clarifiers, sand traps and grease filters, the system delivers high torque capacity, superior resistance to wear and corrosion and outstanding operational reliability.

By combining high performance round steel chains with robust, modular drive systems such as PI-GAMMA and OMEGA, TECDOS enables improved system uptime, reduced maintenance costs and stable, predictable process performance.

Do you want more information on our drive technology solutions? Call us on 07 3809 1300 or email us.

This information is accurate at the time of publication, and RUD Australia takes no responsibility for any errors, inadvertent or otherwise. Some pictures are for illustration only.

In the realm of industrial applications, the RUD Forked Link Chains stand out as a robust and versatile solution. Engineered with precision, this forged chain link system is designed to enhance operational efficiency, reduce maintenance costs, and ensure smooth operations across various industries.

Understanding the RUD Forky

The RUD Forky is crafted from drop-forged material, ensuring exceptional strength and durability. RUD's unique heat treatment process guarantees consistent material quality, making the Forky a reliable choice for demanding industrial environments. The chain's optimised grain structure further enhances its resilience and performance.

One of the standout features of the RUD Forky is its sophisticated wear indicator. This visible indicator allows easy monitoring of chain wear, enabling proactive maintenance and reducing the risk of unexpected breakdowns. This feature ensures operational continuity and significant cost savings.

Why does the RUD Forky stand out?

• Material Strength and Durability: The RUD Forky's drop-forged material construction ensures high strength and durability, making it suitable for daily use in harsh industrial conditions.
• Zero Downtime: The innovative wear indicator helps in scheduling maintenance proactively, thereby minimising downtime and enhancing overall operational efficiency.
• Energy Efficiency: The Forky's advanced design includes optimised chain weight, which reduces energy consumption and operational costs. This feature also contributes to a lower carbon footprint, promoting sustainability in industrial operations.

Why is it a Good Decision to choose the Forky?

Choosing the RUD Forky is a good decision for the following reasons:

• Space-Saving Design: The compact chain system of the RUD Forky requires less space compared to conventional options, allowing for more efficient use of available space.
• Versatility: The RUD Forky is adaptable to various conveyor angles, including inclined, vertical, and horizontal applications. This versatility makes it suitable for a wide range of industrial processes.
• Safety: The non-recirculating and slow conveying mechanisms of the Forky reduce the risk of dangerous explosions, ensuring a safer working environment.
• Enhanced Strength: The RUD Forky offers enhanced strength and endurance, along with higher lateral stiffness. The wear indicator allows for quick visual wear inspections, facilitating timely maintenance decisions.
• Reduced Wear and Tear: The Forky's design minimises friction, leading to lower wear and tear and longer operational life.
• Load-Bearing Capacity: The specific draft angle of the Forky enables it to carry full loads efficiently without requiring additional tensioning of the link and scraper bar.

Applications of the RUD Forky

Forked-link chains are suitable for transporting powdered, flaky, grainy, and fragmentary bulk materials but not sticky bulk materials. The RUD Forky is suitable for a variety of industries, including paper production, construction, woodworking, food and feed production, plastics, mills, chemical industries, agriculture, ports and cargo handling, and recycling.

The RUD Forky is a strategic decision for any business aiming to enhance efficiency, reduce costs, and ensure smooth operations. Its robust construction, intelligent design, and versatile applications make it an asset in modern industrial settings. By minimising downtime and maintenance costs, the RUD Forky offers a reliable and cost-effective solution for various industrial applications.

Forky comes in 2 strand variants:

• Single-strand variants 142 x 50 x 19, 142 x 50 x 29 and 260 x 75 x 31
• Double-strand variants 142 x 50 x 19, 200 x 50 x 25 and 250 x 60 x 30

Article copyright to RUD: This information is accurate at the time of publication, and RUD Australia takes no responsibility for any errors, inadvertent or otherwise.

If you want to know how the team at RUD can help, please call 07 3809 1300 or fill out a form here.

Western Australia's maritime industry faces unique challenges, particularly with vessel access due to the region’s extremely high tidal ranges, which can reach up to 11 meters. These high tides complicate the boarding process from jack-up barges or jetties, posing safety risks to personnel and impacting operational efficiency. Traditional methods of vessel access often prove inadequate and potentially unsafe in these demanding environments.

This is why the RUD TECDOS system is recommended as an ideal solution.

Exceptional durability:

The extreme conditions of Western Australia's coastal waters require equipment designed for exceptional durability and reliability. The RUD TECDOS system is ideal because it is resistant to corrosion and engineered for long exposure to seawater, contamination, and environmental wear and tear arising from the constant buffeting of waves. TECDOS systems ensure long-lasting performance even in the most challenging environments.

Compact and easy to install:

A key advantage of the RUD TECDOS system is its compact design and simple installation process. This minimises disruption to ongoing operations and reduces the time required to integrate the access system into existing infrastructure. Reduced installation time minimises operational downtime and maximises project efficiency. 

Tolerance to misalignment:

The TECDOS system is tolerant of misalignment. Currents, wave action, and the limitations of floating platforms can affect vessel positioning and alignment. The TECDOS system delivers reliable performance even when equipment is shifted or not perfectly aligned. 

The RUD TECDOS system offers a comprehensive approach to vessel access challenges in harsh marine environments. By combining exceptional durability, compact design, and adaptability to misalignment, the system empowers marine operators to navigate the complex tidal conditions of Western Australia.

By leveraging RUD TECDOS, marine operators can enhance safety, streamline operations, and ensure reliable vessel access, thereby mitigating risks and maximising efficiency.

Article copyright to RUD: This information is accurate at the time of publication, and RUD Australia takes no responsibility for any errors, inadvertent or otherwise.

If you want to know how the team at RUD can help you, please call 07 3809 1300 or fill out a form here.