Brewery Wastewater Characterization Courtney Jones, Senior Associate Civil Engineer

Outline Brewing Process Overview Large Brewery in Irwindale Cleaning Process Packaging Process Wastewater Characteristics Self Monitoring Report and Inspections Handling of Bad Batches and Working with Breweries

Brewing Process Overview Image retrieved from: http://www.cliffsnotesbeerguide.com/brewing/

Large Brewery in Irwindale

Brewing Process Brewing Inputs Byproducts of the Brewing Process Yeast Water Source Byproducts of the Brewing Process CO2 Spent Grain Yeast Filtration Diatomaceous Earth (DE) Cartridge Filters

Cleaning Process Closed Loop Systems Cleaning Agents High Temperatures Caustics – Sodium Hydroxide Acids – Citric Acid, Nitric Acid High Temperatures

Packaging Process Rinsing Bottles and Cans Inks and Solvents Oils, Lubricants and Greases

Wastewater Characteristics High TSS High COD or BOD Low pH Soluble Sulfides Odor Issues

Self Monitoring Report and Inspection SMR pH minimum Flash Point minimum Suspended Solids Total Dissolved Solids Soluble Sulfide Chloride COD reported Inspections Quarterly Sampling from LACSD Night Inspections Annual Inspection

Bad Batches and Working with Breweries MillerCoors Irwindale Call and orchestrate with LACSD Manage flow Have a thorough understanding of their process Questions to ask Do you perform advanced treatment on your water? How do you handle spent grain from your process? How do you filter your beer? How often do you backwash your filters and where does the backwash go? Do you have any wastewater pretreatment prior to discharge?

Questions?