Pulp & Paper

Process water from the mill's cooling tower is often contaminated with airborne dust, algae, paper fines, and pipe scale. These contaminates circulate through heat exchangers and chillers and significantly reduce the system's cooling ability. In addition, spray nozzles become clogged due to particulates in the system which endanger the quality of the product manufactured. Many hours are spent cleaning decker showers, shower water, pump gland seals, analyzers, sensors, and much more. In many cases, chemicals and alternative forms of filtration are used without much luck. This problem results in unscheduled maintenance shutdowns which often cause considerable production losses.

TEKLEEN® self-cleaning water filters provide the ultimate solution where dirty water is a problem. The filters operate on line pressure alone. Self-cleaning is triggered by a pressure differential and is accomplished in seconds without interrupting the flow. The filters are compact in size and designed to meet a wide variety of industrial applications. Automatic Filters, Inc. offers screens of unique material and construction (slotted wedgewire) that prevent plugging and stapling of screens and eliminate shutdown for cleaning.

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Application Datasheet
Pulp & Paper filter installation photos


Sweetwater Paperboard

Pulp & Paper Customers

Case Studies

Mississippi Mud is No Match for Minnesota Paper Mill

Making wood and water come together to create high quality production-graded paper is the business of Blandin Paper, a subsidiary of UPM-Kymmene located in Grand Rapids, Minnesota. The water used in Blandin's paper mills comes directly from the Mississippi River. It flows through a 24-inch pipe at a rate of 4,200 gallons per minute (with a maximum capacity of 10,000 gallons per minute) via two online pumps of 400 hp and 350 hp, respectively.

But Blandin Paper does not have to worry about sludge and other impurities from the Mississippi River contaminating its processing equipment and compromising the quality of its paper. The plant has installed four new, state-of-the-art, automatic Tekleen® water filters with 150-micron stainless steel screens to trap any debris that may be dredged up from the river.

Application Diagrams