Missouri pork processor boosts wastewater treatment efficiency

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A large Missouri pork processor was looking upgrade treatment capacity, and as part of this upgrade they wanted to improve the efficiency of their wastewater treatment process.

In particular they wanted to reduce Total Suspended Solids (TSS), particulate Biological Oxygen Demand (BOD), and Oils and Grease (OG) to help avoid surcharges.

Their existing facility included an equalization well, drum screens, Dissolved Air Flotation (DAF), and aerobic sludge lagoons.


The plant incorporated a Hydro-Industrial MicroScreen™ rotating belt screen upstream of the existing treatment systems.

Samples were gathered from the influent going into and effluent coming out of the system and were sent to a laboratory for independent performance evaluation.


Dewatered cake solids output from the Hydro-Industrial MicroScreen™ integrated dewatering system averaged 39% total solids – presenting significant savings in solids handling and volume sent to disposal sites as well as the opportunity to sell rather than landfill these by-products.

Additionally, the Hydro-Industrial MicroScreen™ system’s average removal rates were 79% of particulate BOD, 92% of TSS, and 90% of oils and greases.

The outcome of the evaluation indicated that, by reducing the pollutant load upstream, the small-footprint Hydro-Industrial MicroScreen™ will increase the efficiency of existing wastewater treatment systems at the plant or replace elements of it entirely.