Hey everyone, I was wondering if anybody out there has any secret techniques of getting some stains off the floor under our brew house. I'm a commercial brewer working on a Krones Combicube system. For the most part the system evacuates weak wort out to a holding vessel and trub from knock out is thrown on the end of the next lautering batch. Depending on the circumstances this stuff can be put to the drain. We regularly scrub floors under our brew house but I've noticed over the years that there are some patches that just won't come off! One area is under the mash tun area and looks like malt/wort colors. I've always used hot caustic in water to scrub it and that has done the trick pretty good. It still is pretty effective but like I said there are areas where I feel the coloring is permanent. I've tried Acid based cleaners, chlorinated caustic, and even straight up caustic with no dilution and none of them made any difference.
The other area is under our whirpool. Sometimes trub has been dumped to the drain and now I've noticed some greenish/yellow areas under there still won't come off. I'm pretty sure these stains came from IPA's with extract oil added into the boil. Again I've tried acid, caustic, chlorinated caustic and even bleach to no avail. Any suggestions out there?
The other area is under our whirpool. Sometimes trub has been dumped to the drain and now I've noticed some greenish/yellow areas under there still won't come off. I'm pretty sure these stains came from IPA's with extract oil added into the boil. Again I've tried acid, caustic, chlorinated caustic and even bleach to no avail. Any suggestions out there?
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