Here are my most frequent brewery wastewater questions. Please contact me if you need elaboration on any of this, I’m here to help.
A#1. A brewery on septic is a challenge, see this page. Short story is the septic tank will turn in to a fermenter. It will fill with dead yeast and you’ll need to pump it often. And some of that yeast and a lot of sugar will wind up in the drain field, eventually causing it to plug. The high BOD will also cause excessive bacterial growth in the drain field which doesn’t help things (bacteria die and plug things).
Further adding to my message of good news is there is no good solution. Even if you get 100% BOD removal, you still have a lot of water to dispose of everyday. And even getting 50% BOD removal is very expensive.
A#2. There is an easier, less expensive way to lower BOD and TSS. You simply can’t afford a little wastewater treatment plant at your brewery ($200k minimum), and you don’t want one either- they are complicated to operate and maintain. See this page for more info.
Generally what I advise is to not put the BOD and TSS down the drain to begin with. Collect them at the source and haul it off site as fertilizer or animal feed (this is called side streaming, see here), you can get their BOD down to 3000 mg/L and TSS to 700 mg/L pretty easily. Still high compared to domestic wastewater, but much lower than without side streaming. In general side streaming removes about 75% of BOD and TSS load, but only about 10% of total wastewater volume.
I don’t do wastewater treatment and in general I don’t recommend it, you’re usually better off financially with side streaming. Another thing I tell people is anything is technically possible, but financially possible is another story. So just be aware of that.
A#3. Of course! It’s what I’m here for. Let me know what the city said, your brew kettle size, and projected gross annual production for the first 5 years.
A#4. An automated pH adjustment system should have an installed cost well below $100k. When comparing quotes you need to pay attention to what is and isn’t included. For instance, if its a skid mounted system you will need a lift station to collect ww from the drains and pump it up to the skid. Is the lift station tank, pumps, controls, valves, and piping to get the water to the skid included? What about plumbing from the skid to the discharge point? Shipping, installation, startup, etc? You also want to make sure the equipment they offer is well suited to the application, I’ve seen drinking water equipment installed in brewery wastewater applications and it fails almost immediately.
If the price is too steep, I can help you phase in a system, starting with a manual system then upgrading to automated over time as patience and cash flow allows.
A#5. Here is my typical response when various technology providers contact me. When looking at various technologies I always say anything is technically possible, the issue for a brewer is financial. Can they afford it? Do they have space for it? Do they have the skills, desire, and patience to operate it? The answer to that set of questions is almost always no, no, no.
Another issue to consider, rough numbers here: There are 7500 breweries in the US (maybe 8000 now?). 7000 of them are very small (<1000 bbls/yr), so that leaves at most 500 breweries big enough for something like this. 75% of those don’t have any wastewater restrictions, so now we’re down to 125 or so in the whole country and there are other technology providers competing for this numbers already. Just a little reality check.
A#6. Bear in mind that I get a lot of requests like this, so I can help but keep it short. The short story on wastewater and breweries is it depends on what town they’re in, wastewater treatment plants are generally town specific. Some treatment plants have plenty of excess capacity, others have none. Some breweries are small, others are bigger; it all depends on the combination of those types of factors.
There is a ton of free information on this site. But understand that I have to keep a lot of it very general. Like you, I am in business to make money, not give all of the details away on a free website. Imagine giving all of your beer away… And both of us probably feel like we’re giving away too much ‘free beer’ anyway.
I usually give the first hour for free as I get acquainted with your project, then I charge $100 per hour for services with a $500 minimum on all projects after that first hour. Most of my projects have a total fee between $500 and $6000. I bill on the 15th of the month with net 30 day terms.
Who’s that hairy guy in the picture? This photo was taken in Sichuan Province, China in 2011 during our 2 year bike tour. I have more gray hair now and no beard…
Email works best for me for the first contact (use the contact form below). Thank you very much.