Challenge
The City of Marissa, Illinois was in need of upgrading and expanding their wastewater treatment system to increase their capacity and to have the ability to pretreat leachate from a nearby landfill. They were also in need of funding and support for the construction required.
Solution
In a unique cooperative agreement, Waste Management, Inc. funded the construction of a new wastewater treatment plant and selected a construction and engineering firm to form a design / build team. Waste Management, Inc. is the leading provider of comprehensive waste and environmental services in North America.
Results
The OMNIFLO® SBR meets the State of Illinois wastewater treatment requirements and produces a high quality effluent with a very low NH3 output. The faciliy was also designed to produce reuse quality effluent.
- Average Design Flow: 590,000 MGD
- Average Daily Flow: 436,000 MGD
BOD TSS NH3
| Influent
mg/l | Effluent
mg/l | Influent
mg/l | Effluent
mg/l | Effluent
mg/l |
| Design | 310 | < 10 | 312 | < 12 | 1.5 |
| Actual | 112 | 1.7 | 147 | 1.8 | 0.1 |
For more information download pdf file of complete case study