Case Studies

Pennsylvania Dairy - Solids Removal
A Philadelphia area dairy produces bulk milk and cultured dairy products. They have a wastewater treatment plant that consists of two 40,000-gallon equalization tanks, a 200,000-gallon oxidation ditch, and a single clarifier. Their flow is approximately 100,000 gallons per day with an influent BOD of 1500-2000 ppm and an influent solids level of 500-800 ppm.

Prior to using Munox and while using a competitive wastewater bacterial inoculant, the dairy WWTP experienced difficulty meeting permit standards for effluent quality. Furthermore, they experienced severe bulking problems that adversely affected solids compliance, even with polymer addition to enhance settling.

Munox addition proved very beneficial in enhancing the overall operation of the dairy WWTP. BOD removal was improved by 5.7%; solids removal was enhanced by 32.9%, while polymer addition was being reduced due to improved settling.

The addition of Munox to the dairy wastewater treatment system has stabilized the effluent quality, thereby allowing better compliance with permit requirements.

“Food processing companies can benefit by learning about current methods and interventions that can assist in effectively managing their water resources. Without the appropriate knowledge and use of these wastewater management techniques, these companies will continue to lose money through water use charges, raw material losses, sewage surcharges, and possible fines from environmental agencies.” - NC Cooperative Extension Service

“Wastewater management and treatment are the predominant concerns in the food processing industry . . . . The opportunities for pollution prevention are mainly in the discharge of wastewater. The greatest quantity of pollutants are biodegradable organic material (measured as BOD).” - Wisconsin DNR

“Traditionally, the food processing industry has been a large water user . . . Primary issues of concern are BOD, TSS, excessive nutrient loading . . . which are a result of animal processing; and residual chlorine and pesticide levels.” - EPA

“All food processing sectors within this report view ‘wastewater’ as the primary area of concern.” “The industry will continue to implement advanced innovative techniques to lessen the environmental impact of food processing discharge wastewaters.” - EPA

Proposed EPA effluent guidelines for Meat & Poultry Products : “The proposed regulations establish requirements for large meat and poultry products facilities to control discharge of conventional pollutants (BOD, TSS, FOG, COD and nutrient pollutants including ammonia)..... EPA is soliciting comment on this proposal, and specifically requesting information on POTW interferences cause by Meat & Poulty Producers.” - Feb. 2002

Osprey Biotechnics
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