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Mystery Bug of the Month

June-07

Spirillum. . . . . Indications that you have septicity, either in your clarifiers, digesters, EQ or primaries

OK, these are often overlooked and many times you need to be at 400x or 10000x. If you have these in your plant, you probably need to do maintenance or optimization on your primary, or secondary clarifiers or digesters. If you see this in your slide under the microscope, it means you need to examine your plant and check for septicity, gassing or ashing and make some minor process changes. You may have a high TSS or get false BOD readings in your final effluent when these are present.

We do have videos of this, but they are too large to load on a website. They are one megabyte for each second, so typically 20-30 MG files, so you can see how big the files would get. You may contact us for copies of the videos if you are interested.

These photomicrographs were taken from a wastewater sample. Most of the objectives used were 100 and 400x.

Come take a closer look at the amazing world under the microscope!

	microaerophilic sulfur-oxidizing spirilla


they can have less than one to five or more helical turns	Spirillum can be 1.4 to 1.7 micrometers in diameter and up to 60 micrometers in length
The term spirillum is used generally for any of the corkscrew-like species.	Typically when you see spirillum in a wastewater plant, it means you have septicity. Check influent, primaries, digesters or clarifiers. Look for gassing and ashing


Thiothrix, 021N and spirillum, all indications of septicity	1000x

spirillum, H hydrossis, 0411, indications of septicity

1000x	1000x S natans and spirillum low DO in the system and septicity
	N limicola and spirillum, again septicity indicators

	Lots of H hydrossis and spirillum

1000x	400x



Found in a system with a sudden high BOD loading, H hydrossis, Nocardia, zooglea also in the system	Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales; Spirillaceae

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Stay tuned each month

More to come soon!

Enlargements: If you liked these pictures and want to see additional microorganisms check out the pages below.

Amoeba

Flagellates

Free Swimming Ciliates

Eating under the microscope- Dinner time!

What if you do not have a lab or microscope onsite that is capable of performing an analyses of your system?

Find out how Environmental Leverage's lab can perform an analyses of your biomass in your system and make recommendation on how to improve your system.

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