The Polston Process Provides Tank-Cleaning Solution

Combination truck from Polston Applied Technologies provides complete cleaning for a variety of wastewater applications.
The Polston Process Provides Tank-Cleaning Solution
Pat Polston, left, co-founder and chief technical officer of Polston Applied Technologies, explains the process behind the new PAT 1249 combination truck, which combines vacuum and jetting with a downhole wastewater cleaning system.

The PAT 1249 medium-sized combination truck from Polston Applied Technologies provides a stand-alone cleaning system for large pipes, digesters, grit and frac tanks, lift stations, wastewater treatment plants, ponds, lagoons and other environments.

The new model made its debut at the 2015 Water & Wastewater Equipment, Treatment & Transport (WWETT) Show. “The people in the wastewater industry know us, but it’s always exciting to talk about a new product with them,” says Pat Polston, company co-founder and chief technical officer. “This product takes what we’ve proven works and improves it even more.”

The Combination3 technology on the truck breaks down to three components – a vacuum system, a water jetter and a downhole system that allows equipment to clean in deep or submerged environments and remove high-viscosity material. The service can be performed while a wastewater treatment plant remains fully online.

“The process filters the water, leaving sand and grit dry for normal disposal,” he says. “It’s basically separating sand from water as it runs through our unit, allowing machinery to remain in operation the whole time. It’s a fit for anyone dealing with sludge cleaning, from municipalities to industrial wastewater treatment operators.”

Debris dumps into the truck’s pressurized 12-cubic-yard steel tank or a roll-off container. After treatment, water is pumped out of the unit. The debris tank has a full-opening rear door (power up/down) and a 45-degree dump angle with manual door locks, level indicator and internal float shut-off.

A fully baffled tank provides water for the fully automated multi-directional jetting system. The jetter reel holds up to 1,000 feet of hose. “This truck can pump to 25-cubic-yard debris boxes for quick disposal, allowing it to remain in constant operation,” says Polston. “There’s never a need to shut anything down.”

A hydrostatic-drive, boom-mounted 6-inch submersible pump with six-blade impeller sits in the water, grabbing material and pushing it into the truck. Powered by a 400 hp engine, the unit can pump and separate grit from water at depths to 27 feet or more.

The truck has a 49-foot hydraulic articulating knuckle-boom crane with telescoping tubes for hard-to-reach places, wireless remote control and 180-degree rotation. Its hydrostatic-drive vacuum system delivers 16 inches Hg at 3,600 cfm, and the jetter nozzle produces 180 gpm at 2,000 psi.

The complete process can be performed remotely by one operator, saving time and manpower and eliminating confined space entry. “This is an efficient, safe process,” says Polston. “Once people learn about it, they’re hooked.”

Polston calls the WWETT Show a big success for his company and plans a bigger display in 2016. The PAT 1249 is a medium-sized version of the company’s smaller PAT 949 and the larger PAT 360HD Combination3 trucks. Polston wants to introduce another truck geared toward municipalities and a training program to increase the reach of the Polston Process. He sees WWETT as the opportunity to do that.

“I’ve been coming here to this show since 1986 and have built a lot of trucks,” says Polston. “This has always been the best place to get the product in front of customers.” 844/765-7866;


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