the Zeta Rod™ for pulp and paper production

Historically, the pulp and paper industry has been located along major rivers because water is a basic raw material in the production process. Although some facilities still use some water as a power source, even modern factories use large amounts of water to process pulp and produce paper. It is not uncommon for a mill of modern design to use from 20,000 to 65,000 gallons of water per ton of product.

The high levels of organic compounds, fibers, and cellulose in warm, oxygen-rich water fosters high levels of bacterial growth in paper processes. Slime and biofilm can break loose and become entrained in the paper, marring the finished product. In addition, biological growth leads to corrosion throughout the system, even on stainless steel surfaces.

The ability of the Zeta Rod™ system to inhibit the attachment of microbes to wetted surfaces and prevent the formation of scale can provide significant improvement in the operation of the following processes in pulp and paper production:

• Paper machines

  In a paper machine, the Zeta Rod™ maintains water distribution equipment in a clean condition, stabilizing processes that require accurate and reliable delivery of water.

  The photos below illustrate how the Zeta Rod™ can be used to keep spray nozzles clear of biofouling and scale. In the photo at left, heavy scale deposits cover much of the nozzle screen surface after only 17 days of operation. In the photo at right, even with a biocide dosage reduction of 50% and 39 days of operation, the nozzle screen is clear of scale.
  

• Felt, wire, and roll showers
• Nash vacuum pumps
• Barometric legs
• Fresh water heaters
• Black liquor evaporators
• Smelt, green, and white liquors

Contact ZETA CORPORATION for further information.