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573,962 Views ā¢ Apr 5, 2022 ā¢ Click to toggle off description
In both wastewater treatment and fermentation, humans co-opt microorganisms to convert a less desirable liquid into a better one. This video explores the secondary wastewater treatment process through the lens of homebrewing.
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Practical Engineering is a YouTube channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that ālikeā button, give us a comment, or watch another of our videos!
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This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.
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Producer/Writer/Host: Grady Hillhouse
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Script Editor: Ralph Crewe
Views : 573,962
Genre: Education
Date of upload: Apr 5, 2022 ^^
Rating : 4.977 (140/24,644 LTDR)
RYD date created : 2024-05-06T07:42:14.754463Z
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YouTube Comments - 1,103 Comments
Top Comments of this video!! :3
I spent a couple of decades as a wastewater treatment plant professional. Retired now and one of my hobbies is home brewing. All that time in the lab must have been somewhat enjoyable for me to consider brewing an option for a hobby.
1.3K |
I love how you can combine a liquid that's the combination of people's waste and a liquid that makes people wasted in one video and make anyone feel interested in it.
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A few things to note to the more curious:
1. While we do pump a lot of Oxygen (or just air that has 21% Oxygen, since it's free :P) into the tanks, not all steps/tanks are aerated. Most notably the Anaerobic (for removing Phoshorous) and Anoxic (for removing Nitrogen) tanks are mixed without aeration.
2. BOD is still used today, though nowadays COD (Chemical Oxygen Demand) seems to be more preffered afaik. Though personally I still use BOD most of the time.
3. Nowadays, systems like MBBR/IFFAS are becoming more popular as they require less space and air, and are more efficient. The TL;DR is that in the tanks with aeration we drop tons of small plastic chips on which the microbial colonies later grow, which in turn increases the dencity and speed of the biological proccesses. This/ along some other things make the system more complex. :P
4. One of the big problems that remain, is how to deal with the excess sludge/biomass that is produced on a daily basis? Sure, we prevented it from reaching the downstream water, which is good, but what to do with it now? This is a big topic in itself, and one that is still developing right now.
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Grady, you were basically smiling this entire episode. Your ability to transmit educational material to the youtube masses with such enthusiasm is so energizing and contagious. You can really tell you enjoy learning just as much as you enjoy teaching.
Also congratulations on your new one!!!
430 |
I currently work for a municipal water utility in the wastewater department. When I first started working here, they took us all on a field trip to one of the treatment plants. The plant manager bragged on the plant and said, because of the organisms, he felt more like a zookeeper than a sewage treatment plant worker. āGotta keep āem happy!ā
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A nice "Addendum" to the sewage series would be how it's treated on the ISS, since most of ground-based treatment involves gravity which the ISS can't really take advantage of.
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As a professional brewer, you did a great job explaining the basics in an easily "digestible" way. Cheers!
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Even before watching the video, and being in wastewater I glad you are covering this! Duality of life, one manās trash is another organism treasure (aka food) and vice versa. The many wonders of life and how every life form is engineered to balance each other.
Great video! On a side note a lot of my former coworkers in the industrial wastewater are great at brewers. Some even culture their own yeast.
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Grady, I work for a construction company that specializes in water and wastewater treatment, and i must say, i thoroughly enjoy all your videos on the topic. Please feel free to reach out anytime if you feel you ever needed additional information for these videos! Keep up the good work!
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The output of both tastes wonderful (:
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Love the series about waste water Grady, keep it going!
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4:46 I love how satisfied Grady looks after dropping that rhyme XD
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"If it's clear and yellow, you've got juice there, fellow! If it's cloudy and brown, you're in cider town!"
- Ned Flanders
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Good stuff, as always. I wanted to pitch an idea for a future topic: landfills. Would love to learn more about the engineering and science behind construction, site selection and functionality.
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This was a really interesting video for me, because not only do I like an occasional beer or especially cider, but I work in a plant that uses recycled water! We make brown paper (linerboard or containerboard) from recycled corrugated boxes (aka OCC). The process uses a ton of water to break down, refine and store the paper pulp. You can't pump it if it's more than 5% paper, so that means every tank has at least 95% water in it. And it's all sort of dirty water with fine particles and dissolved solids. But we also bring in 100s of 1000s of gallons per day, as well as discharging to the city after treating and going through our own clarifiers. We also monitor temperature, pH, and flow (instant and total). We're allowed to take a certain amount from the river on our property, but the remainder of our water use is supplied from the city waste treatment plant. Effluent quality water is piped up to us (about 3 miles) and we use up to 1000gpm at times. The pipes, the tank, and the pumps are purple. There are also some purple fire hydrants that I don't recommend playing in when they get flushed out. Thanks so much for this video, really enjoyed it. --RB in CT.
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I used to work next to an active demonstration sewage treatment system and after that experience I would say that your neighbors thank you for not replicating it in your garage. This was a museum where the entire second floor's wastewater was treated in one of the exhibits (but then secretly sent on to the sanitary sewer). On warm summer nights the smell was quite strong, even for such a small system. We also had the largest roaches that most people have ever seen!
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Been years since I've interned with the MWRA and I've never seen that view of it before but that initial 5 second shot looks like the digester eggs at Deer Island Waste treatment facility in Boston (should be Logan right there in the shot too). It was a pretty cool experience seeing how all that worked and I also learned that part of the sewage in that whole system gets turned into fertilizer
17 |
Yep, sewage and human waste is a fascinating subject.
Continues eating lunch without batting an eyelid
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When I was doing my chemistry PhD, I looked a lot into the limitations for what we were allowed to dispose of down the drain. Some of the results were quite surprising, as they were mediated more by the effect the pollutants would have on the sewer microbes rather than humans! Lead? - no big deal. Nickel? - keep that antimicrobial stuff out!
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@PracticalEngineeringChannel
2 years ago
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