Hi all.
We are waiting for a sewer permit from the municipality in which we are going to build and expand our existing brewery. This is a rural municipality that has a medium sized waster water treatment plant. Obviously, they have some concerns as to how much waste water we will generate and where our BOD levels will be. We have done some calculations with industry standard numbers and have determined we will need to do a significant amount of side streaming and also install 2 very large buffer tanks that will act as holding tanks and will periodically discharge our waste water into the system. At this point, we will be using a centrifuge for filtration saving the yeast from the separation and having it trucked off site for use by a farmer. We also will be pumping trub from the boil back into the lauter tun which then then be removed as well being integrated into the spent grain. This is a 60bbl brewhouse with projections of 20,000 bbls in the first year and increasing from there with a goal to max out at 60,000. My question is this, does anyone have BOD levels of their waste water that they are willing to share AFTER this amount of side streaming? I know yeast and trub alone count for almost 95% of BOD levels in the process, but this municipality is asking for detailed numbers of what our levels will be post side streaming. Since we are not built yet, I have no way of testing or knowing what this could be. Any help is appreciated.
Thanks.
We are waiting for a sewer permit from the municipality in which we are going to build and expand our existing brewery. This is a rural municipality that has a medium sized waster water treatment plant. Obviously, they have some concerns as to how much waste water we will generate and where our BOD levels will be. We have done some calculations with industry standard numbers and have determined we will need to do a significant amount of side streaming and also install 2 very large buffer tanks that will act as holding tanks and will periodically discharge our waste water into the system. At this point, we will be using a centrifuge for filtration saving the yeast from the separation and having it trucked off site for use by a farmer. We also will be pumping trub from the boil back into the lauter tun which then then be removed as well being integrated into the spent grain. This is a 60bbl brewhouse with projections of 20,000 bbls in the first year and increasing from there with a goal to max out at 60,000. My question is this, does anyone have BOD levels of their waste water that they are willing to share AFTER this amount of side streaming? I know yeast and trub alone count for almost 95% of BOD levels in the process, but this municipality is asking for detailed numbers of what our levels will be post side streaming. Since we are not built yet, I have no way of testing or knowing what this could be. Any help is appreciated.
Thanks.
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