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