Jackson storm cells pilot case study


Courtesy of In-Pipe Technology Company, Inc.

Performance History and Discussion
The City of Jackson (COJ) and Jackson Water Partnership (JWP) selected In-Pipe Technology (IPT) in March 2010 to team with them and implement a beta test project. The principal purpose being to evaluate the microbial technology and benefits of the IPT professional services program for the Savanna WWTP Storm Cells.

In-Pipe Professional services include 100% natural soil microbes, Bio Reactor equipment installation and maintenance, time and materials and wastewater analyses to estimate pollutant levels and biological application requirements f and adjustments as required.

The Storm Cell system is comprised of Three each 17 acre cells that are connected in series. They are pictured above, top center- right, but the three Aerators pictured are not utilized as part of the IPT program. The initial program priority is focused on Cell #1 including multiple weekly applications of highly active, site generated, microbial colonies and application services provided by IPT

Key project implementation criteria include Cell HI volume, sludge age and characteristics, settleability, and the requirement to accommodate processing storm/sewage diversion flows of 20 MGD. Team goals/observations for this pilot project include:

  • Visual decrease in the amount/concentration of floating solids
  • Visual expansion of the influent short circuit flow path width and maintaining the flow path free of floating solids
  • Establish sampling and testing protocol for IPT beneficial  bacteria, metabolic rate trends and pH levels
  • Note the increase in surface gassing at or in the neutral pH range as one indicator of increased digestion activity.

Present Conditions
Currently, 20 MGD diversion flow is processed with little or no increase in total solids in the Storm Cell system effluent.

Project Installed: March 2010
Plant Storm Cells Size:
Total 171MG; Cell #1- 57 MG

Service Objectives:

  • Reduce floating solids
  • Aid in controlling odor
  • Evaluate TS &VS trends
  • Improve influent flow channel and visual flow pattern.
  • Establish biosolids characteristics that are beneficial for land application disposal..
  • Maintain facultative-No Air-beneficial biological activity for optimum sludge control and reduction.

Progress Summary:

  • Estimated short circuit path width to 100'+ from 30'.
  • Little or no floating solids in the short circuit flow path.
  • Significantly overall reduced floating solids in Cell HI.
  • Little obnoxious odor in subsurface sludge samples
  • No significant solids increase in Cell system effluent
  • Increased surface gassing with Cell pH in the neutral range

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