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BOD/TSS Loading
Biochemical oxygen demand (BOD) is a measure of how much oxygen is required to biologically decompose organic matter in the water. Total suspended solids (TSS) is the total amount of suspended materials. These both measure the strength of wastewater discharges. Companies get hit twice when waste goes down the drain, first in product loss and second in strength charges.
Equipment and Processes
Equipment for Recovering Raw Materials and Reducing Wastewater When dealing with wastewater, equipment is available to help recover process materials or to help reduce the volume of wastewater that needs to be treated as hazardous waste.
Emulsified Oil and Water Separating Products Aqueous cleaning solutions can be contaminated by the build-up of emulsified waste oil, which can decrease the solution's cleaning capability. Use this list to find products to separate emulsified oil and water. It can help extend the usefulness of process fluid or help in pre-treating wastewater prior to sewering.
Membrane Filtration Systems Membrane filtration removes particles too small for conventional cartridge filters to remove. Nanofiltration or ultrafiltration can be used to reduce the biochemical oxygen demand (BOD) of wastewater by removing substances such as sugars.
Industry Case Studies
Dairy Plant Reduces Water Use and BOD Saving Over $26,000 Decreased water use by fine tuning the computer programming that ran its clean-in-place (CIP) systems, which sanitize equipment. Saved over 8.5 million gallons of water and over $20,000 annually. Decreased biochemical oxygen demand (BOD) loading by 2.5%, saving an additional $6,000 per year.
Kerry Bio-Science Kerry Bio-Science was among the companies asked to evaluate its effluent. Water scrubbers, cooling applications and extensive-cleaning needs generate significant amounts of effluent.
Phosphorus: Reducing Releases from Poultry Processing Plants The poultry industry is a large contributor to Minnesota's agricultural economy with sales accounting for about 7% of Minnesota's farm output. Poultry processing plants contribute large biochemical oxygen demand (BOD) loads, as well as total suspended solids (TSS) and phosphorus to wastewater. This fact sheet outlines a number of steps that can be taken to reduce poultry processing plant waste.
Stora Enso Reclaims Solids for Wastewater for Reuse Reclaiming usable raw materials from its wastewater, the papermaker reduced the amount of solids released to the sewer and justified a $134,000 project.
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