A major full service bakery in Northern Ohio has a pretreatment plant for treatment
of bakery waste before discharging wastewater to the local village wastewater treatment
plant. The average daily wastewater influent to the pretreatment plant has a concentration
of the following: 6,000 to over 100,000 mg/l CBOD; average suspended solids of 6,000
mg/l and oil and grease concentrations of 800 to 1,000 mg/l.
The average daily flow through this plant is 15,000 to 25,000 gallons per day. This
waste is treated aerobically in an activated sludge system consisting of two 50,000
gallon aerated tanks in series. The waste is then pumped from the second aeration
tank onto a gravity belt with polymer being injected into the waste stream.
The objective of adding the Bio1 product to this system was to try to increase the
biological activity and further reduce the oil and grease.
Bio1 was added to the system with an initial charge of two gallons. After that one
quart of Bio1 per day was added for a ten-day period. The maintenance dose of Bio1
was then reduced to one pint per day.
The second aeration tank took on a darker brown color, and there is no longer any
type of grease buildup on the paddles of the gravity thickener belt. The dosage of
polymer has been reduced by approximately 70%.
The average effluent discharge to the local village POTW has a CBOD average of less
than 200 mg/l, TSS of 200-400 mg/l and an average oil and grease of 15 mg/l or less.
All Organic Products Company products are 100% organic and they are noncorrosive,
nonpathogenic and safe to store and use.
They are harmless to people, pets and wild life if used as directed.