Weekly Intake: A Water Intake Systems Blog

Traveling Water Screens in the Pulp & Paper Industry

By Michael Stock

 

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It seems that the pulp and paper industry is always under the environmental microscope, whether it's because of practices tied to acquiring raw materials or producing the end products.

In the United States (and many other countries) the pulp and paper industry is one of the most water intensive industries. The industry uses so much of this particular resource because water is needed in almost every step of the production process. According to WaterWorld, many facilities require up to 54 cubic meters of water to produce just one metric ton of finished product.

 

More Water, More Regulations

American industries (like pulp and paper) that take in large amounts of water fall under the jurisdiction of Section 316(b) of the Clean Water Act. These facilities have National Pollutant Discharge Elimination System (NPDES) permits and withdraw at least 2 million gallons per day from nearby water sources (25% of which is used only for cooling purposes).

According to the EPA, Section 316(b) is meant to "reduce impingement and entrainment of fish and other aquatic organisms at cooling water intake structures used by certain existing power generation and manufacturing facilities for the withdrawal of cooling water from waters of the United States."

So how do pulp and paper facilities comply with 316(b)? With traveling water screens, of course.

 

Traveling Water Screens = BTA

Traveling water screens, like our Modified Ristroph Fish Handling Traveling Water Screen, are recognized by the EPA as the BTA (Best Technology Available) to comply with the regulation.

Why are they considered the BTA? Well, there are two primary reasons, the non-metallic, Smooth-tex┬« flat wire mesh and the molded fish buckets. The mesh protects fish from descaling and the buckets protect them from turbulence as they come into contact with the traveling water screen.


Are you interested in learning more about traveling water screens? Then download our guide or contact one of our product experts (they would be happy to answer any questions you might have).

 

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