New England brewery cuts disposal fees

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A New England brewery with an expensive anaerobic digestion system was looking to reduce Total Suspended Solids (TSS) in its wastewater.

TSS was contributing to an unacceptable portion of their solids disposal fees.


With solids clogging their anaerobic digester and reducing efficiency, the brewery was looking for a better solution to maintain the capacity of their digester and to reduce their disposal costs.

Chemical Oxygen Demand (COD) was also an issue, but most of their COD was soluble so it could not be removed by physical separation.


The brewery contacted Hydro International to arrange a pilot demonstration on their wastewater to see if the Hydro MicroScreen™ ultrafine rotating belt screen could reduce their TSS loading rates.


The trial was a success. Laboratory analysis showed that the Hydro-Industrial MicroScreen™ removed on average 82% of TSS and, while COD was not the primary target of the trial, the system provided the added bonus of also removing 36% of COD.