KUB Continues Platinum Certification

Congratulations to the Knoxville Utilities Board (KUB),  Kuwahee Wastewater Treatment Plant in Knoxville, TN on their continued NBP BMP Platinum Certification.  On 21-DEC-2015 the auditors reported that KUB “is improving through the use of a systematic approach to managing their biosolids activities. The following improvement outcomes within the past two years were confirmed.

• New grit removal equipment is improving quality of biosolids to and from digesters & centrifuge resulting in better quality product being land applied.
• Automated control of DO measurement using probes has reduced blower use, with 20% energy reduction.
• The “Operator Qualification Program” is establishing a consistent operator knowledge base, improving public confidence and preparing for anticipated TDEC requirements
• Cleaning the digester has improved operation, including 50% improvement in pathogen reduction and increase from 40% to 50% volatile solids reduction and reduced centrifuge operating time and energy cost.
• Replacing the DAF with a gravity belt thickener led to significant increase in solids content to digester (from 3% to 5½ %)
• A Process Control Plan for wet weather events has led to improved equipment use, more consistent plant operations.
• Defoamer use lowered, reducing costs $100K.
  ”
  Please see the attached audit report for additional information.

Report-KUB Biosolids I Audit -final 12-21-15