Total Suspended Solids (TSS) & Biological Oxygen Demand (BOD) Reduction
Stone Container (Pulp/Paper Mill) - Savannah Plant, was faced with a major problem
of total suspended solids (TSS) and biological oxygen demand (BOD) in a mill aeration
pond. The pond had a 24 million gallon per day waste stream, and the average daily
TSS ranged from 6,000 pounds to as high as 29,000 pounds. BOD5 was also a major concern
in this aeration pond. Levels ranged from 70,000 to 210,000.
Organic Products Company (OPC) was asked to treat the pond with the objective being
to reduce the TSS and BOD by at least 50% while maintaining cost-effectiveness.
Organic Products Company contracted with a firm in the field of microbiology to formulate
a microbial product which would use OPC’s Agripro (the organic Humate mined by OPC)
as the substrate and accomplish the desired results. After several months of laboratory
research, the Histosol Bio 10 product was ready for field trials. The microbiologists
discovered that the OrganicPro substrate was an excellent incubation medium for microorganisms.
The result was the birth of Bio 10.
The substrate of Agripro has an extremely high concentration of organic matter, packed
with micro and macronutrients that provide the microbes with an excellent food source.
Agripro was described as a “steroid” for microbes. The major problem associated with
the use of microbial-based products has historically been the “lag-time” needed before
the product begins to function. By using Agripro as the substrate, or medium, for
the microorganisms, the “lag-time” became significantly reduced. Laboratory results
also concluded that by incubating microbes in Bio 10 the number of colony forming
units per milliliter also increased exponentially. After just 24 hours of incubation,
the CFU/ml increased 10 fold. After 10 days of incubation, the CFU/ml count was 32
times as great when compared to the count on the day prior to the incubation.
Bio 10 was added to the mill aeration pond (24 million gallon daily waste stream)
at the rate of 2 PPM for a 10-day test period. The TSS levels prior to treatment
averaged 14,125 pounds per day. At the end of the 10-day test period, a total of
500 gallons of the Bio 10 product had been metered into the pond. The average daily
TSS reduced to 5,810 pounds following the treatment. This equates to a 58.9% reduction
The BOD5 decreased to an average of 16,000, down 27,875, or 63.5%, following the
Bio 10 was extremely effective in rapidly reducing the TSS and BOD to the targeted
levels in the mill aeration pond. The product provided Stone Container with a very
cost-effective alternative to using other microbial products to reduce the TSS and
BOD. Because it is an organci product it reduces corrosion while being totally enviornmentally