T . Marzetti Company Pretreatment System Improvements Client: T. Marzetti Company Location: Columbus, OH T. Marzetti Company contracted Hazen and Sawyer to evaluate the existing pretreatment system at its Indianola Plant and determine what improvements were necessary to meeting local discharge limits. Hazen and Sawyer designed and constructed major modications to the existing system in addition to adding a secondary DAF and other ancillary equipment, returning the facility to compliance with their local discharge permit. Project Outcomes and Benefits The new system reduces the amount of sludge/oat needing to be hauled on a daily basis and simplied the daily operation of the pretreatment system. The facility improvement also provides additional future capacity for increased production. A

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