Plant experience using hydrogen peroxide for enhanced fat flotation and BOD removal

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Environmental Progress; (United States)

DOI:https://doi.org/10.1002/ep.670110412· OSTI ID:5998214

Steiner, N; Gec, R ^[1]

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1. Degussa Corp., Allendale, NJ (United States)

Hydrogen peroxide (H[sub 2]O[sub 2]), is known in the food processing industry to reduce COD, BOD, to prevent anaerobic conditions in pipes, tanks and lagoons and to remove malodorous sulfides in effluents from anaerobic wastewater treatment. It has recently been shown to also provide effective solids removal from food processing wastewater. The wastewater of food processing plants often contains a very high loading of organic material consisting of fat, oil and grease (FOG), resulting in unacceptable BOD and COD levels. Since many wastewater treatment systems are being pushed to the limit of their capacity or are already overloaded, the high FOG loading cannot be removed well by the conventional means of treating the wastewater with dissolved air flotation or grease traps. As a result, many food processors are paying surcharges for not being in compliance with the tight discharge limits. To overcome these problems, a process has been developed using H[sub 2]O[sub 2] for enhanced FOG recovery and BOD removal. The process is based on the formation of microbubbles which attach themselves to the FOG particles and float them to the surface where they can be easily skimmed off. In addition to meeting effluent standards, the process has been able to yield a material that is very renderable and suitable for reuse. Technical and operational data of several industrial applications in the US and Canada are presented, together with process costs. H[sub 2]O[sub 2] treatment will generally be most applicable when improvement of solids removal is required without major investment costs, e.g. emergency situations, during seasonal peaks or increased production. 12 refs., 5 figs., 3 tabs.

• OSTI ID: 5998214
• Journal Information: Environmental Progress; (United States), Journal Name: Environmental Progress; (United States) Vol. 11:4; ISSN 0278-4491; ISSN ENVPDI
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
ANAEROBIC CONDITIONS
BIOCHEMICAL OXYGEN DEMAND
BUBBLES
CHARGES
COMPLIANCE
FATS
FLOTATION
FOOD INDUSTRY
FOOD PROCESSING
GREASES
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
INDUSTRY
LIQUID WASTES
LUBRICANTS
OILS
ORGANIC COMPOUNDS
ORGANIC WASTES
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PROCESSING
RELEASE LIMITS
REMOVAL
SEPARATION PROCESSES
SOLID WASTES
SURCHARGES
TAXES
VEGETABLE OILS
WASTE WATER
WASTES
WATER
WATER TREATMENT