Reviewed P2 Options
Microbreweries - Brewing and Packaging Process
Following are a set of P2 options you may wish to implement. No option is perfect for everyone, but sometimes options that have worked at one facility can work at yours. They might also serve as inspiration.
Reviewed Microbreweries - Brewing and Packaging Options
Following are a list of options that have been reviewed by pollution prevention specialists.
These options have worked at other facilities and may work at yours.
Recycle spent grains
|Send spent grains to farmers for use as animal feed.|
Send trub to farmers
|Send trub from the brew kettle, which is high in protein but extraordinarily bitter, to farmers for land application as fertilizer.|
Use a heat exchanger to save energy
|Recover the heat from the hot water using the heat exchanger. Incoming, cold, city water is run through the heat exchanger to gain heat from, and so cool, the hot wort. Rather than waste this heat energy, the hot city water can be reused to save energy used to heat the hot water. This hot water is often discharged into microbreweries, but it should be sent to the hot liquor tank for use in brewing the next batch.|
Use dead yeast cells for grain or trub to be recyc
|Add dead yeast cells from the Fermentation Tank to the grain going out as animal feed or the trub going out to be used as fertilizer.|
Recover reusable yeast
|Recover reusable yeast from the Fermentation Tank and use for fermentation in the next batch.|
Sterilize beer/yeast mixture for recycling
|Sterilize beer/yeast mixture from the Fermentation Tank (heating it to 140 degrees F for 15 minutes) and then mix it with the grain going out as animal feed or the trub going out to be used as fertilizer.|
Mix yeast and solids from the Filtration system
|Mix yeast and solids from the Filtration system should be mixed with the grain going out as animal feed or the trub going out to be used as fertilizer.|
Use spilled beer for fertilizer
|Recover spilled beer from the brewpub to be used as fertilizer.|
Use spilled beer from kegging line
|Collect spilled beer from the kegging line and mix with grain going out as animal feed or the trub going out to be used as fertilizer.|