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  • Rick could you compare an Aerobic MBR to an Anaerobic MBR please?

  • Yeah sure, a few thoughts on that is, well first off, both types of MBR systems will achieve a higher quality effluent as to compared with a

  • traditional secondary clarifier or a dissolved air flotation unit on the backside of your biological reactor. You can see very low TSS, pretty

  • much nondetectable in most cases, along with improved organics removal, both COD and BOD. Both of the systems, whether it be

  • anaerobic or aerobic will reduce the footprints required since youre using a membrane as your solids separation device, so youre able to

  • maintain much higher mixed liquor concentrations within your reactors so, therefore, the volume of your reactors is going to go down,

  • reducing your footprint. One of the advantages of an Anaerobic MBR is, if youre just looking at removing organics, the COD and BOD, its got the

  • advantage to get you down to very low COD and BOD removals without the need for downstream anaerobic treatment and, generally, you

  • would be able to get pretty much below any surcharge limits for BOD, which are typically in the 250-300 mg/L range. You should be able to get

  • down below that with an Anaerobic MBR. Also with an Anaerobic MBR, by retaining your solids within the system, you do have a greater ability

  • to digest, I’ll say some, troublesome biodegradable solids, if you would. By keeping them in the system with a long retention time, you are able

  • to break them down much better than you would in a traditional system, and I talk about that a little bit later in the talk here. Jim also

  • talked about operating and cleaning requirements earlier. With an Anaerobic MBR youre generating biogas so, with certain types of

  • systems, you have to use a gas to scour the membranes to keep them clean, to keep your flex rate up going through the membranes.

  • In an Aerobic MBR, youre using air to do that. In an Anaerobic MBR youre using, youre typically using biogas. So with that in mind, having

  • an Anaerobic MBR, youve got a more closed system and youre dealing with a which adds some complexity, some additional safety

  • requirements and some additional valves and controlling, and like I mentioned before, your membrane tanks are covered in an Anaerobic

  • application where theyre not in an Aerobic application. Now last but not least, Aerobic MBR’s have been around for a long time now and

  • there’s several years of operating performance and hundreds of installations out there, where Anaerobic MBR is relatively the new kid

  • on the block but there are growing applications and some numbers of installations that were seeing.

Rick could you compare an Aerobic MBR to an Anaerobic MBR please?


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水の問題3:好気性MBR対嫌気性MBR (Water Matters 3: Aerobic MBR vs. Anaerobic MBR)

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    歐陽億 に公開 2021 年 01 月 14 日