A sprawling wastewater treatment plant featuring Polychem® Systems with multiple rectangular treatment pools is shown. The facility includes several buildings and a network of catwalks and piping

Polychem® Systems

Polychem® Chain & Flight Scraper Systems

Brentwood has vast experience with sludge collector systems with over 18,000 installations and more than 10 million feet of collector chain in operation worldwide. Polychem chain and flight collectors are comprised of the finest quality components available in today’s market and with the exception of hardware, all submerged equipment is non metallic. Reliably constructed and economically designed, these products function efficiently as part of any rectangular clarifier system.
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Head Shafts

The Polychem non-metallic telescoping head shaft was invented and installed as part of the first 100% non-metallic system in 1984. At that time, the industry was just beginning to test plastic as a lighter, corrosion-resistant alternative to steel. Today, Polychem non-metallic head shafts have become the water treatment industry’s gold standard.

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Two dark steel chamfer-style weights with cylindrical tops and wider, tapering bases resemble stub shafts. The weights are uniform in color with a smooth, matte surface finish.
Stub Shafts

Polychem idler stub shafts are the lightweight alternative to traditional full-width steel shafting and cast iron wall bearings. We offer two base diameters and lengths to accommodate sprocket centerlines from 9 to 29 inches off the wall, allowing customized stub shafts to fit various tank sizes, system loadings, and existing structural conditions.

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Sprockets

Brentwood’s Polychem sprockets are molded from a specially selected, high-strength Nylon material that outwears and outlasts UHMW-PE and polyurethane sprocket alternatives. All sprockets are equipped with standard integral teeth to maintain tooth alignment and are designed for use with Polychem collector chain.

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Close-up view of multiple metal channel sections, displayed in varying angles. The channels, likely made of steel or aluminum, exhibit smooth, reflective surfaces and sharp, clean edges
Flights

Brentwood offers more flight scraper options than any other chain and flight manufacturer, enabling us to provide sludge collection solutions for any water or wastewater application. In addition to industry standard c-channels, Polychem’s flight offerings include the proprietary Ultra, Ultra Plus, Box, and E-Flight profiles for heavy loadings and deep sludge blankets. The Ultra Plus and Box flights provide sturdy and reliable options for wide tank applications, and the E-Flight is the ultimate solution for processes that require a taller scraper flight.

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Collector Chain

Brentwood’s Polychem NCS-720-S Collector Chain is among the strongest 720-series chains on the market. Precision molded from durable, glass-reinforced polyester, this lightweight chain withstands high sludge loadings in corrosive environments. Our collector chain can also be protected with barrel wrap for high grit or highly caustic conditions. By reducing barrel wear, the chain lasts longer and performs better.

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A blue motorized mechanical device, known as a drive unit assembly, is mounted on a concrete surface with bolts. It connects to a chain and sprocket system adjacent to a metal frame.
Drive Unit Assembly

Brentwood supplies drive units that are custom configured for each collector based on system requirements and regional and environmental conditions. Each system utilizes a motor and gear reducer and optional components such as overtorque protection to prevent drive system failure, a drive chain tightener to maintain tension, and a chain guard to protect rotating equipment above the deck.

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Scum Removal

The removal of scum during clarification is an essential step to decrease organic loadings and scum buildup in subsequent treatment processes. Brentwood’s rotating scum troughs and skimmers efficiently remove all grease, scum, and floating material from the water surface in rectangular clarifiers and settling basins.

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A shield emblem with the letters "SG" is at the center of the image. "SMARTGUARD" stands out in large, bold letters, while "COLLECTOR MONITORING SYSTEM" appears in smaller text beneath it. The background features a wavy, abstract pattern in dark and light shades.
SmartGuard®

The SmartGuard Collector Monitoring System for rectangular clarifiers identifies collector system overloads that cannot be detected by traditional shear pin or torque monitoring devices. SmartGuard’s strategic placement allows it to monitor regular motion, warn of potential danger, and shut down the system before damage can occur. This cost-effective, early detection approach helps water and wastewater plants to avoid costly system failures by controlling up to four mechanisms, including longitudinal collectors, cross collectors, and screw conveyors.

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Field Services

Brentwood can supply numerous on-site services for our customers. Whether it’s starting up and commissioning a new Polychem installation, evaluating existing equipment and making upgrade recommendations, or educating and training your operators, having Brentwood’s qualified, factory-trained technicians on your team will provide you with peace of mind.

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