Q For the last 5 years, I've been using a CIP re-circulation system, which has tanks equipped with 15psi pressure valve(s) and re-circulation under 10psi. After filling the FV (fermentation vessel) with the correct amount of hot water and caustic solution, I'd run the CIP for 15-20 minutes with all the vents closed. Does this lack of ventilation during the process put the tanks in jeopardy of exploding and/or imploding?
A When you empty a tank, there is typically a bit of carbon dioxide (CO2) remaining. If you run the CIP using caustic without venting, you take the chance of the ... Read On
Q I'm in the process of constructing my first 8.5 bbl brewery system, and have already run into the issue of my state's Health Department questioning me about how I plan on ensuring my brewery wastewater remains within the required pH range of 5.5 & 10. I'm currently using a double-tank CIP system with acid sanitizer in one tank, and a caustic cleaning solution in the other. Once this cleaning process is complete, what's the best way to ensure my sewer effluents are in the required pH range? I'd like to avoid installing a sump pump and/or purchasing a high-cost automatic pH adjuster, if possible.
A Generally, the average pH of your brewery wastewater will be 5.5 or lower. Nevertheless, my recommendation for pH adjustment would be to buy a lower-end caustic solution, as well as ... Read On
Q I'm currently setting up a brewery and have been sorting through the equipment that was purchased for this brew pub before I came on-board. In doing so, I've only identified a single-vessel CIP system (with 80L tank & skid-mounted pump) for cleaning, rather than a double-vessel CIP system, which is what I've always used (one for acid rinsing & one for caustic cleaning solutions). To my knowledge, caustic solutions are more beneficial at 70?. That being said, what's most optimal for this type of setup? Is using a cold caustic solution acceptable and, if so, should I increase both the time and concentration of the caustic for this process? Alternatively, should I purchase an additional tank equipped with temperature control (including a heating element) for caustic use only?
A Optimal caustic performance is typically around 55-60?, so if possible, heat your caustic solution above this temperature. Never use chlorinated caustic at temperatures higher than 65? and always check with ... Read On
Q What are the advantages (if any) to cleaning under pressure vs. not?
A When using acid and detergent(s), cleaning under pressure is feasible - however, cleaning-in-place (CIP) with caustic is not recommended under pressure, as it absorbs the majority of the CO2 in ... Read On