PuroStar™, designed specifically for wastewater treatment applications.
Industrial manufacturing and wastewater treatment processes routinely generate foam. Foam is generated when gas is entrapped within a liquid, and the gas-liquid dispersion is stabilized. Many products currently on the market to remedy foam are actually process grade defoamer products that are repurposed and used in the wastewater treatment facility rather than products specifically tailored to the wastewater treatment process. EBS recognizes the impact repurposed products can have on the wastewater treatment process and offers a line of environmentally-friendly defoamer products to fulfill the needs of industrial wastewater processes.
Our treatability lab routinely conducts respirometric testing on chemicals that may cause chemical inhibition to the biology within industrial wastewater treatment systems. We tested two chemistries of defoamer products, treating them no differently than any suspected biological toxicant. Each was tested well beyond maximum dosages and side-by-side with a known chemical inhibitor for their impact on the wastewater treatment system. None impacted the functionality of the wastewater system as seen by the cumulative oxygen uptake rates showing biological activity (Figures 1 and 2).
|Product Name||BOD contributed to the system per pound of defoamer||Example BOD contribution|
|PuroStar 1011||0.025 lbs.||8.75 lbs.|
|PuroStar 1012||0.001 lbs.||0.35 lbs.|
|PuroStar 1013||0.003 lbs||1.05 lbs.|
|PuroStar 2011||0.194 lbs.||67.9 lbs.|
|PuroStar 2012||0.219 lbs.||76.65 lbs.|
|PuroStar 2013||0.212 lbs.||74.2 lbs.|
|A typical dosage of 2.5 ppm equates to an addition rate of <350 lbs. PuroStar for a 20 MGD flow.|
Many permits require no visible foam present at the discharge site of a facility’s receiving stream. EBS defoamer products were tested for toxicity on the two most widely used aquatic organisms found on NPDES permits: C.