Optimization of an industrial Wastewater Treatment Plant Through Implementation of a Membrane Bioreactor and Revese Osmosis System for Reuse

Stone Brew Co. in Escondido, California, built a brand new brewing facility with a simple wastewater treatment system adjacent to a restaurant and one acre beer garden in 2005. After some significant production growth, the City threatened to significantly increase the water rate to be able to accommodate the higher organic strength and solids content in the water. This resulted in the installation of an aeration tank to meet biochemical oxygen demand (BOD) limits and a dissolved air flotation (DAF) unit to meet total suspended solids (TSS) limits in 2008. By doing this, the City agreed to leave the water rate at the existing value. Typical influent water quality to the WWTP was 12,000 mg COD/L, 7300 mg TSS/L at a pH of 5.4. The issues with running an industrial WWTP with a rudimentary design quickly became apparent.

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