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In addition to TIE activities, New England Bioassay has undertaken an increasing workload in the evaluation of discharge relocations from surface waters to sanitary sewers and in assessing the potential toxic impacts of the addition of new products of unknown toxicity to process wastewaters (e.g., metal finishing, pulp & paper, specialty chemical, and pharmaceutical wastewaters). Typically, a biological wastewater treatability study is undertaken using engineering simulation and design. New England Bioassay is able to maintain and perform biological reactor testing cost-effectively in a controlled laboratory setting. These treatability studies are cooperatively performed with a variety of environmental engineering firms and industrial clients.
- Determination of mixed liquor inhibition with pretreated industrial discharges
- Toxicity testing with mixed discharges
- Sidestream treatment and bioassays
- Biological nitrification studies
- Benchscale Rotating Biological Contactor (RBC) treatment evaluations
- Activated Sludge Inhibition Studies
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In addition to performing treatability studies, NEB also assesses the potential impact of new products/process lines on effluent toxicity by performing toxicological analyses on "simulated" effluent samples prepared in the laboratory; the "simulated" effluents are based on the expected use rate and current treatment by the facility. |
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These cooperative efforts allow for immediate effluent toxicological and chemical analyses and can be used during early engineering design and simulation phases. New England Bioassay also offers a wide range of specialized aquatic toxicological services to the petroleum, lubricant, chemical, and pharmaceutical industries for oils, lubricants, blends, dispersants, and other low solubility compounds. Assessments performed by New England Bioassay include:
- Biological assessments of new processes and products
- Multiple test species (typically 5 to 10 species) acute and chronic toxicity assessments of pharmaceutical products/byproducts and process wastewaters
- Water Accommodated Fraction Testing (WAF)
- Oil Water Dispersion Testing (OWD)
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