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Wastewater Treatment

Operational Challenges & Long-Term Control Plan Prompt Improvements

Problem

The City of Zanesville is planning improvements to their 11-MGD design average daily flow wastewater treatment plant to improve operability, correct deficiencies in individual unit processes, and maintain compliance with the City’s combined sewer overflow Long-Term Control Plan (LTCP).

The LTCP required designing for a peak wet weather flow of 36.2-MGD through the Plant. Major operational problems included poor performance and high maintenance costs of the submersible primary pumping station, lack of redundancy in the headworks screening equipment, poor hydraulic performance and grit capture in the detritors, snail growth in the trickling filters with downstream accumulation of snail shells, aging solids handling equipment, and safety risks of the gaseous chlorine disinfection system.

 

Solution

CTI’s study addressed issues identified by Plant operators by prioritizing and budgeting improvements for development into construction packages in phases and areas of the plant. Conceptual designs are being developed to obtain operator feedback on proposed solutions before preparing construction documents.

 

Project Elements

  • Feasibility Study
  • Alternatives Analysis
  • Conceptual Design
  • Cost Estimating

 

CTI Services

  • Process, Structural, Hydraulic, and Electrical Engineering
  • Funding Assistance
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Client

City of Zanesville, OH

Project Cost

Approx. $30.0M

Funding

Ohio Water Development Authority Planning Loan

CTI Personnel on project

Rick Reed, PE

Zak Kaczor, PE

Ken Price, PE

Mitch Myers, PE

Paul Cate

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CTI Engineers has been providing practical, but innovative, solutions to engineering challenges using nature’s inspiration to enhance and protect the natural world since 1991. 

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