Enhanced Microbiological Program Reduces Slime and Improves Safety

GoalImprove microbiological control in mill water and utility circuits.

<h6>Customer Challenge</h6> <p>An integrated packaging mill was experiencing microbiological (MB) control issues in its mill water circuit leading to its paper machines. The mill&rsquo;s existing ammonium sulfate-based biocide was insufficient to maintain slime free cooling for critical heat exchangers within the utility circuit. Solenis was chosen to improve general water treatment service and performance by providing a replacement MB control program.</p> <h6>Recommended Solution</h6> <p>Solenis recommended that the mill replace its existing biocide program with ClearPointSM biofilm detection and control program. Comprised of three components&mdash;an OnGuard&trade; 3B analyzer, Biosperse&trade; CX3195 chlorine stabilizer and Solenis&rsquo; superior service&mdash;the program offers real-time biofouling measurements and automatically adjusts chemical feed to ensure effective, around-the-clock microbiological control.</p> <h6>Results Achieved</h6> <p>The mill achieved the following benefits with the ClearPoint program:</p> <ul> <li>Chlorine residual increased throughout the mill water circuit to the paper machines, reducing slime and improving thermal transfer&nbsp;</li> <li>The amount of iron reducing bacteria (IRB) in the mill water circuit was reduced, lowering iron to the PMs</li> <li>Supplemental biocide feed to the cooling towers was significantly reduced and MB control was improved&nbsp;</li> <li>Vapor decompressions in the ClO2 generation process were eliminated, improving safety in the bleaching process&nbsp;</li> <li>Surface condenser efficiency improved by increasing vacuum due to the removal of biofouling</li> </ul> <p><img style="max-width: 100%; width: auto; height: auto; display: block; margin-left: auto; margin-right: auto;" src="/link/524a9b5859d04725b7aa028ed426bf5e.aspx" alt="" width="1100" height="662" /></p>