Industrial Fluid Management, Inc. (IFM) was contacted by a local food manufacturer at the suggestion of the local POTW to address the facility's chronic wastewater problems associated with poor treatment removal.
The facility was facing several fines and the classification of "habitual offender" by the local POTW for violations of CBOD5, Total Suspended Solids and, occasionally, oil and grease.
The facility's production consists primarily of cream-based products and gelatin products. The wastewater consists of these byproducts in addition to the sanitation byproducts generated with CIP (Clean in Place) processes.
Problems in treatment stemmed from little to no separation from the use of chemical additives. This lead to very little removal of the problem parameters discharged to the City Sewer.
After an initial engineering and operational review of the DAF and other treatment components, IFM determined that changes in chemicals and modes of operation had to be implemented to adequately reduce contaminants prior to discharge to the POTW.
IFM recommended changing coagulants from ferric chloride to poly aluminum chloride supplied by One AuquaSource. This change reduced the coagulant dosage from 1000 ppm to 250 ppm and the reduced the demand for caustic soda to neutralize the pH.
By implementing these changes and making operational adjustments, IFM was instrumental in reducing the facility's violations and the surcharges that they were incurring on a quarterly basis.