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Case Study

Automating the Wastewater Treatment Design Process in Arizona

Transcend and Stanley Consultants Case Study for a 1MGD Wastewater Resource Recovery Facility in Arizona.

 

AUTHOR

Related Topics

Wastewater Treatment

I&I Detection

BACKGROUND

The Pinewood Sanitary District (PSD) in Arizona suffered from high volumes of Inflow and Infiltration (I&I) at their 1MGD wastewater resource recovery facility. Additionally, there were concerns about the performance of their Influent Screens and Aerobic Digester. The intermittent I&I issues caused periodic violations of the facilities existing NPDES Permit.

THE SOLUTION

Working with the Transcend Design Generator (TDG), Stanley Consultants was able to automatically ascertain the appropriate sizing requirements for a new Flow Equalization Basin and an expansion to the existing Aerobic Digester. Additionally, Stanley Consultants was able to confirm that other treatment process units were adequately designed and sized.

RESULTS

  • Using TDG compressed the timeframe to run three separate process calculations from 5 days to 1 day, thereby saving the client money and completing the project on time.
  • Due to the success of using TDG on this project, Stanley Consultants is currently using the software on additional projects for other clients.
  • The TDG outputs supported Stanley Consultants rigorous standards for high quality engineering documentation and yielded a branded and formatted professional design package.

THE PROCESS

  • Stanley Consultants ran TDG to automatically assess three process scenarios.
  • Ultimately, the Plant Permitted Capacity is what was required
    to meet current Arizona regulatory requirements.
  • It was determined that the high I&I flow had to be neutralized
    using a Flow Equalization Basin
    adequately sized to mitigate the periodic plant process upsets.
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